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preliminary rev. 0.3 5/07 copyright ? 2007 by silicon laboratories CP2103 CP2103 s ingle -c hip usb to uart b ridge single-chip usb to uart data transfer - integrated usb transceiver; no external resistors required - integrated clock; no external crystal required - integrated 1024-byte eeprom for vendor id, product id, serial number, power descriptor, release number, and product description strings - on-chip power-on reset circuit - on-chip voltage regulator: 3.3 v output usb function controller - usb specification 2.0 compliant; full-speed (12 mbps) - usb suspend states supported via suspend pins asynchronous serial data bus (uart) - all handshaking and modem interface signals - data formats supported: - data bits: 5, 6, 7, and 8 - stop bits: 1, 1.5, and 2 - parity: odd, even, mark, space, no parity - baud rates: 300 bps to 1 mbits - 576 byte receive buffer; 640 byte transmit buffer - hardware or x-on/x-off handshaking supported - four gpio signals for status and control - configurable i/o (1.8 v to v dd ) using v io pin - configurable i/o (v dd to 5 v) using external pull-up - rs-485 mode with bus transceiver control virtual com port device drivers - works with existing com port pc applications - royalty-free distribution license - windows vista/xp/server 2003/2000/98se - mac os-x / os-9 - linux usbxpress? direct driver support - royalty-free distribution license - windows vista/xp/server 2003/2000 - windows ce 6.0, 5.0, and 4.2 example applications - upgrade of rs-232 legacy devices to usb - upgrade of rs-485 legacy devices to usb - cellular phone usb interface cable - pda usb interface cable - usb to rs-232 serial adapter supply voltage - self-powered: 3.0 to 3.6 v - usb bus powered: 4.0 to 5.25 v - i/o voltage: 1.8 v to v dd package - lead free 28-pin qfn (5 x 5 mm) ordering part number - CP2103-gm temperature range: ?40 to +85 c figure 1. example system diagram CP2103 3 . 3 v voltage regulator 48 mhz oscillator in out suspend suspend 11 12 regin 7 gnd 2 rst 9 d+ d- 4 8 uart ri dcd cts rts rxd txd dsr dtr 1 28 27 26 25 24 23 22 2 3 3 external rs-232 transceiver or uart circuitry (to external circuitry for usb suspend states) vbus d- d+ gnd 4 5 6 usb connector 6 1 vdd vbus usb function controller usb transceiver 640b tx buffer 576b rx buffer 1024b eeprom gpio_0 gpio_1 gpio_3 gpio_2 1 8 1 7 1 6 (to external circuitry for status and control) 4 vio 5 external voltage supply or direct connection to vdd 1 9
CP2103 2 preliminary rev. 0.3 n otes :
CP2103 preliminary rev. 0.3 3 t able of c ontents section page 1. system overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2. absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 3. global dc electri cal characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 4. pinout and package defini tions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 5. usb function controller and transceiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 6. asynchronous seri al data bus (uart) interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7. gpio pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 8. internal eeprom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 9. CP2103 device drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 9.1. virtual com port drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 9.2. usbxpress drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 9.3. driver customization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 9.4. driver certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 10. voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 11. relevant application notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 document change list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 contact information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
CP2103 4 preliminary rev. 0.3 1. system overview the CP2103 is a highly-integrated usb-to-uart bridge controller providing a simp le solution for updating rs-232/rs-485 designs to usb using a minimum of co mponents and pcb space. the CP2103 includes a usb 2.0 full-speed function contro ller, usb transceiver, oscillator, eeprom, and asynchronous serial data bus (uart) with full modem control signals in a compact 5 x 5 mm qfn-28 package (sometimes called ?mlf? or ?mlp?). no other external usb components are required. the on-chip eeprom may be us ed to customize the usb vendor id, pr oduct id, product description string, power descriptor, device release number, and device serial number as desired for oem applications. the eeprom is programmed on-board via th e usb allowing the program ming step to be easily integrated into the product manufacturing and testing process. royalty-free virtual com port (vcp ) device drivers provided by s ilicon laboratories a llow a CP2103-based product to appear as a com port to pc applications. the CP2103 uart interface implements all rs-232/rs-485 signals, including control and handshaki ng signals, so existing system firmware does not need to be modified. the device also features up to (4) gpio signals that can be us er-defined for status and control information. support for i/o interface voltages down to 1.8 v is provided via a v io pin. in many existing rs-232 designs, all that is required to update the design from rs-232 to usb is to replace the rs-232 level- translator with the CP2103. direct access driver support is available through the silicon l aboratories usbxpress driver set. see www.silabs.com for the latest application notes and product support information for CP2103. an evaluation kit for the CP2103 (part number: CP2103ek) is available. it includes a CP2103-based usb-to- uart/rs-232 evaluation board, a complete set of vc p device drivers, usb and rs-232 cables, and full documentation. contact a silicon labs ? sales representatives or go to www.silabs.com to order the CP2103 evaluation kit.
CP2103 preliminary rev. 0.3 5 2. absolute maximum ratings 3. global dc electrical characteristics table 1. absolute maximum ratings parameter conditions min typ max units ambient temperature under bias ?55 ? 125 c storage temperature ?65 ? 150 c voltage on any i/o pin or rst with respect to gnd ?0.3 ? 5.8 v voltage on v dd or v io with respect to gnd ?0.3 ? 4.2 v maximum total current through v dd , v io , and gnd ??500ma maximum output current sunk by rst or any i/o pin ??100ma note: stresses above those listed may cause permanent damage to t he device. this is a stress rating only, and functional operation of the devices at or exceeding the conditions in th e operation listings of this sp ecification is not implied. exposure to maximum rating conditions for extended periods may affect device reliability. table 2. global dc electrical characteristics v dd = 3.0 to 3.6 v, ?40 to +85 c unless otherwise specified. parameter conditions min typ max units supply voltage (v dd ) 3.0 3.3 3.6 v supply voltage (v io ) 1.8 3.3 v dd v supply current 1 normal operation; v reg enabled ?2026ma supply current 1 suspended; v reg enabled ?80100a supply current - usb pull-up 2 ?200228a v io supply current vbus = 0 v dd =0 v io =3.0v ?500? a specified operating temperature range ?40 ? +85 c notes: 1. usb pull-up current should be added for total supply current. 2. the usb pull-up supply current values are ca lculated values based on usb specifications.
CP2103 6 preliminary rev. 0.3 table 3. uart and suspend i/o dc electrical characteristics v io =v dd = 3.0 to 3.6 v, ?40 to +85 c unless otherwise specified. parameters conditions min typ max units output high voltage (v oh ) i oh =?10a i oh =?3ma i oh =?10ma v io ?0.1 v io ?0.7 ? ? ? v io ?0.8 ? ? ? v output low voltage (v ol ) i ol =8.5ma i ol =10a ? ? ? ? 0.6 0.1 v input high voltage (v ih ) 2.0 ? ? v input low voltage (v il ) ??0.8v input leakage current weak pull-ups enabled weak pull-ups disabled ? ? 25 ? 50 1 a maximum input voltage open drain, logic high (1) ? ? 5.8 v table 4. uart and suspend i/o dc electrica l characteristics (low -voltage operation) v io = 1.8 v to 3.0 v, ?40 to +85 c unless otherwise specified. parameters conditions min typ max units output high voltage (v oh ) i oh =tbd i oh =tbd i oh =tbd tbd tbd ? ? ? tbd ? ? ? v output low voltage (v ol ) i ol =tbd i ol =tbd ? ? ? ? tbd tbd v input high voltage (v ih ) tbd ? ? v input low voltage (v il ) ??tbdv input leakage current tbd ? tbd tbd a maximum input voltage open drain, logic high (1) ? ? tbd v table 5. reset electri cal characteristics ?40 to +85 c unless otherwise specified. parameter conditions min typ max units rst input high voltage 0.7 x vio ? ? v rst input low voltage ? ? 0.3 x vio v minimum rst low time to gen- erate a system reset 15 ? ? s
CP2103 preliminary rev. 0.3 7 4. pinout and p ackage definitions table 6. CP2103 pin definitions name pin # type description v dd 6 power in power out 3.0?3.6 v power supply voltage input. 3.3 v voltage regulator output. see section 10 . v io 5 power in 1.8 v to v dd i/o supply voltage input. gnd 2 ground. must be tied to ground. sgnd ground. must be tied to ground. rst 9 d i/o device reset. open-drain output of internal por or v dd monitor. an external source can initiate a system reset by driving this pin low for at least 15 s. regin 7 power in 5 v regulator input. this pin is the input to the on-chip voltage regu- lator. vbus 8 d in vbus sense input. this pin should be connected to the vbus sig- nal of a usb network. a 5 v signal on this pin indicates a usb net- work connection. d+ 3 d i/o usb d+ d? 4 d i/o usb d? txd 25 d out asynchronous data output (uart transmit) rxd 24 d in asynchronous data input (uart receive) cts 22* d in clear to send control input (active low) rts 23* d out ready to send control output (active low) dsr 26* d in data set ready control input (active low) dtr 27* d out data terminal ready control output (active low) dcd 28* d in data carrier detect control input (active low) ri 1* d in ring indicator co ntrol input (active low) suspend 12* d out this pin is driven high when the CP2103 ente rs the usb suspend state. suspend 11* d out this pin is driven low when the CP2103 enters the usb suspend state. nc 10, 13?15, 20?21 these pins should be left unconnected or tied to v dd . gpio.3 16 d i/o user-configurable input or output. gpio.2 17 d i/o user-configurable input or output. gpio.1 18 d i/o user-configurable input or output. gpio.0 19 d i/o user-configurable input or output. *note: pins can be left unconnected when not used.
CP2103 8 preliminary rev. 0.3 figure 2. qfn-28 pinout diagram (top view) 4 5 6 7 2 1 3 11 12 13 14 9 8 10 18 17 16 15 20 21 19 25 26 27 28 23 22 24 CP2103 top view ri gnd d+ d- v dd regin vbus rst nc suspend suspend nc nc nc gpio.3 gpio.2 gpio.1 gpio.0 nc nc cts rts rxd txd dsr dtr dcd sgnd sgnd v io
CP2103 preliminary rev. 0.3 9 figure 3. qfn-28 package drawing table 7. qfn-28 package dimensions dimension min nom max dimension min nom max a 0.80 0.90 1.00 e2 2.90 3.15 3.35 a1 0.03 0.07 0.11 l 0.45 0.55 0.65 a3 0.25 ref aaa 0.15 b 0.18 0.25 0.30 bbb 0.10 d 5.00 bsc. ddd 0.05 d2 2.90 3.15 3.35 eee 0.08 e 0.50 bsc. z 0.435 e 5.00 bsc. y 0.18 notes: 1. all dimensions shown are in millimeters (mm) unless otherwise noted. 2. dimensioning and tolerancing per ansi y14.5m-1994. 3. this drawing conforms to jedec outlin e mo-243, variation vhhd except for custom features d2, e2, l, z, and y which are toleranced per supplier designation. 4. recommended card reflow profile is per the jede c/ipc j-std-020c specification for small body components.
CP2103 10 preliminary rev. 0.3 figure 4. typical qfn-28 landing diagram
CP2103 preliminary rev. 0.3 11 figure 5. typical qfn-28 solder paste diagram
CP2103 12 preliminary rev. 0.3 5. usb function controller and transceiver the universal serial bus function co ntroller in the CP2103 is a usb 2.0 co mpliant full-speed device with integrated transceiver and on-chip matching and pull-up resistors. the usb function controller manages all data transfers between the usb and the uart as well as command requests generated by the usb host controller and commands for controlling the function of the uart. the usb suspend and resume signals are supported for power management of both the CP2103 device as well as external circuitry. the CP2103 will enter suspend mode when suspend signaling is detected on the bus. on entering suspend mode, the CP2103 asserts the suspend and suspend signals. suspend and suspend are also asserted after a CP2103 reset until device configuration during usb enumeration is complete. the CP2103 exits the suspend mode when any of the following occur: (1) resume signaling is detected or generated, (2) a usb reset signal is detected, or (3) a device reset occurs. on exit of suspend mode, the suspend and suspend signals are de-asserted. both suspend and suspend temporarily float high during a CP2103 reset. if this behavior is undesirable, a strong pulldown (10 k ? ) can be used to ensure suspend remains low during reset. see figure 6 for other recommended options. figure 6. typical connection diagram option 1: a 4.7 k ? pull-up resistor can be added to increase noise immunity. option 2: a 4.7 f capacitor can be added if powering other devices from the on-chip regulator. option 3: avalanche transient voltage suppression diodes should be added for esd protection. option 3: use littlefuse p/n sp0503baht or equivalent. option 4: 10 k ? resistor to ground to hold suspend low on initial power on or device reset. 1 CP2103 suspend suspend 11 12 regin 7 gnd 2 rst 9 d+ 3 d- 4 8 c2 0.1 f c1 1 f ri dcd cts rts rxd txd dsr dtr 1 28 27 26 25 24 23 22 2 3 external rs-232 transceiver or uart circuitry (to external circuitry for usb suspend states) vbus d- d+ gnd 4 5 6 usb connector 6 vdd vbus vdd r1 4.7 k ? d1 d2 d3 option 1 r2 10 k ? option 4 option 3 c4 4.7 f option 2 v io 5 1 f i/o voltage gpio.3 gpio.2 gpio.1 gpio.0 19 18 17 16 external application circuitry
CP2103 preliminary rev. 0.3 13 6. asynchronous serial data bus (uart) interface the CP2103 uart interface consists of the tx (transmit) and rx (receive) data signals as well as the rts, cts, dsr, dtr, dcd, and ri control sign als. the uart supports rts/cts, dsr/dtr, and x-on/x-off handshaking. the uart is programmable to support a variety of data fo rmats and baud rates. if the virtual com port drivers are used, the data format and baud rate are set during com port configuration on the pc. if the usbxpress drivers are used, the CP2103 is configured throug h the usbxpress api. the data format s and baud rates av ailable are listed in table 8. 7. gpio pins the CP2103 supports (4) user-configurable gpio pins for status and control information. more information regarding the configuration and usage of these pins can be found in ?an144: cp210x customization guide? and ?an223: port configuration and gpio for cp 210x? available on th e silicon laboratories website . 8. internal eeprom the CP2103 includes an internal eeprom that may be used to customize the usb v endor id (vid), product id (pid), product description string, power descriptor, device release number and device serial number as desired for oem applications. if th e eeprom is not programmed with oem data, the default configuration data shown in table 9 is used. while customization of the usb configuration data is optional, it is recommended to customize the vid/pid combination. a unique vid/pi d combination will prevent the driver from conflicting with any other usb driver. a vendor id can be obtained from ww w.usb.org or silicon labor atories can provide a free pid for the oem product that can be used with the s ilicon laboratories vid. it is also recommended to customiz e the serial number if the oem application is one in which it is possible for multiple cp2102-based devices to be connected to the same pc. the internal eeprom is prog rammed via the usb. this allows the oe m's usb configuration data and serial number to be written to the CP2103 on-board during the manufacturing and testing pr ocess. a stand-alone utility for programming the internal eeprom is available from silic on laboratories. a library of routines provided in the form of a windows ? dll is also available. this library can be used to integrate the eeprom programming step into custom software used by the oem to streamline testing and serial number management during manufacturing. the eeprom has a typical enduranc e of 100,000 write cycl es with a data rete ntion of 100 years. usb descriptors can be locked to prevent future modification. table 8. data formats and baud rates data bits 5, 6, 7, and 8 stop bits 1, 1.5 1 , and 2 parity type none, even, odd, mark, space baud rates 2 300, 600, 1200, 1800, 2400, 4000, 4800, 7200 , 9600, 14400, 16000, 19200, 28800, 38400, 51200, 56000, 57600, 64000, 76800, 115200, 128000, 153600, 230400, 250000, 256000, 460800, 500000, 576000, 921600 3 notes: 5. 5-bit only. 6. additional baud rates are supported. see ?an205: cp210x baud rate support?. 7. 7 or 8 data bits only.
CP2103 14 preliminary rev. 0.3 9. CP2103 device drivers there are two sets of device drivers available for the cp21 03 devices: the virtual com port (vcp) drivers and the usbxpress direct ac cess drivers. only one set of drivers is nece ssary to interface with the device. the latest drivers are available at http://www.silabs.com/products/ microcontroller/downloads.asp . 9.1. virtual co m port drivers the CP2103 virtual com port (vcp) device drivers a llow a CP2103-based device to appear to the pc's application software as a com port. application software running on the pc accesses the CP2103-based device as it would access a standard hardware com port. howeve r, actual data transfer between the pc and the CP2103 device is performed over the usb inte rface. therefore, existi ng com port applications ma y be used to transfer data via the usb to the CP2103-based device without mo difying the application. see application note an197: serial communications guide for the cp210x? for exampl e code for interfacing to a CP2103 using the virtual com drivers. 9.2. usbxpress drivers the silicon laboratorie s usbxpress drivers provide an alternate solution for inte rfacing with CP2103 devices. no serial port protocol expertise is requ ired. instead, a simple, high-level app lication program interface (api) is used to provide simpler cp201x connectivit y and functionality. t he usbxpress for cp210x development kit includes windows device drivers, windows device driver installer and uninstallers, and a host inte rface function library (host api) provided in the form of a windows dynamic link li brary (dll). the usbxpress driver set is recommended for new products that also include new pc software. the usbxpress interface is de scribed in ap plication note ?an169: usbxpress programmer's guide.? 9.3. driver customization in addition to customizing the device as described in sect ion 7, the drivers and the drivers installation package can be also be customized. see application note ?an220 : usb driver customization? for more information on generating customized vcp and usbxpress drivers. 9.4. driver certification the default drivers that are shipped with the CP2103 are microsoft whql (windows hardware quality labs) certified. the certification means that the drivers have been tested by microsoft and their latest operating systems (xp and vista) will allow the dr ivers to be installed withou t any warnings or errors. the customized drivers that are generated using the an220 software are not automatically certified. they must go first through the microsoft driver rese ller submission process. contact silic on laboratories support for assistance with this process. table 9. default usb configuration data name value vendor id 10c4h product id ea60h power descriptor (attributes) 80h power descriptor (max. power) 32h release number 0100h serial number 0001 (63 characters maximum) product description string ?CP2103 usb to uart bridge controller? (126 characters maximum)
CP2103 preliminary rev. 0.3 15 10. voltage regulator the CP2103 includes an on-chip 5 to 3 v voltage regulator. this allows the CP2103 to be configured as either a usb bus-powered device or a usb self-powered device. these configurations are shown in figure 7 and figure 8. when enabled, the 3 v voltage regulator output appears on the v dd pin and can be used to power external 3 v devices. see table 10 for the voltage regulator electrical characteristics. alternatively, if 3 v power is supplied to the v dd pin, the CP2103 can function as a usb self-powered device with the voltage regulator disabled. for this configuration, it is recommended that the regin input be tied to the 3 v net to disable the voltage regulator. this configuration is shown in figure 9. the usb max power and power attributes descriptor must match the device power usage and configuration. see application note ?an144: cp210x customization guide? fo r information on how to cu stomize usb descriptors for the CP2103. note: it is recommended that additi onal decoupling capacitance (e.g., 0.1 f in pa rallel with 1.0 f) be provided on the regin input. figure 7. configuration 1: usb bus-powered table 10. voltage regulator electrical specifications ?40 to +85 c unless otherwise specified. parameter conditions min typ max units input voltage range 4.0 ? 5.25 v output voltage output current = 1 to 100 ma* 3.0 3.3 3.6 v vbus detection input threshold 1.0 1.8 4.0 v bias current ?110? a *note: the maximum regulator supply current is 100 ma. voltage regulator (reg0) 5 v in 3 v out vbus sense regin vbus from vbus to 3 v power net device power net v dd CP2103
CP2103 16 preliminary rev. 0.3 figure 8. configuration 2: usb self-powered figure 9. configuration 3: usb self-powered, regulator bypassed voltage regulator (reg0) 5 v in 3 v out vbus sense regin vbus to 3v power net device power net v dd CP2103 from 5 v power net from vbus voltage regulator (reg0) 5 v in 3 v out vbus sense regin vbus from 3 v power net device power net v dd CP2103 from vbus
CP2103 preliminary rev. 0.3 17 11. relevant application notes the following application notes are applic able to the cp2102. the latest ve rsions of these application notes and their accompanying software are available at: http://www.silabs.com/products/mic rocontroller/a pplications.asp . an144: cp210x device customization guide . this application note describes how to use the an144 software to configure the usb parameters on the cp2102 devices. an169: usbxpress programmer's guide . this application note descri bes the usbxpress api interface and includes example code. an197: serial communications guide for the cp210x . this application note describes how to use the standard windows com port function to communicate with the cp2102 and includes example code. an205: cp210x baud rate support. this application note describes how to use the an205 software to configure the baud rate aliasing feature on the cp2102 devices. an220: usb driver customization. this application note describes how to use the an220 software to customize the vcp or usbxpress driv ers with oem information. an223: port configuration and gpio for cp210x. this application note desc ribes how to use the an223 software to configure the gpio other configurable pins.
CP2103 18 preliminary rev. 0.3 d ocument c hange l ist revision 0.1 to revision 0.2 ? updated ?linux 2.40? bullet on page 1. revision 0.2 to revision 0.3 ? added additional supported operating systems on page 1. ? changed vdd conditions of tables 2 an d 3 from a minimum of 2.7 to 3.0 v. ? updated typical and max supply current numbers in table 2. ? updated package drawings in figure 3, figure 4, and figure 5. ? removed tantalum requirement in figure 6. ? consolidate sections 9 and 10. ? added section "11. relevant application notes" on page 17.
CP2103 preliminary rev. 0.3 19 n otes :
CP2103 20 preliminary rev. 0.3 c ontact i nformation silicon laboratories inc. 400 west cesar chavez austin, tx 78701 tel: 1+(512) 416-8500 fax: 1+(512) 416-9669 toll free: 1+(877) 444-3032 email: mcutools@silabs.com internet: www.silabs.com silicon laboratories, silicon labs, and usbxpre ss are trademarks of silicon laboratories inc. other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders the information in this document is believed to be accurate in a ll respects at the time of publication but is subject to change without notice. silicon laboratories assumes no responsibility for errors and om issions, and disclaims respons ibility for any consequences resu lting from the use of information included herein. a dditionally, silicon laboratories assumes no re sponsibility for the functioning of und escribed fea- tures or parameters. silicon laboratories reserves the right to make changes without further notice. silicon laboratories makes no warranty, representation or guarantee regarding the suitability of its pr oducts for any particular purpose, nor does silicon laboratories assume any liability arising out of the application or use of any product or circuit, and specif ically disclaims any and all liability, in cluding without limitation consequential or incidental damages. silicon laboratories products are not designed, intended, or authorized for use in applica tions intend- ed to support or sustain life, or for any other application in which the failure of the silicon laboratories product could crea te a situation where personal injury or death may occur. should buyer purchase or us e silicon laboratories products for any such unintended or unaut horized application, buyer sha ll indemnify and hold silicon laboratories harmless against all claims and damages.

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