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Capacitive Sensor Control IC Series
Capacitive Sensor Switch Control IC
BU21009MUV
No.09048EBT03
Description BU21009MUV is the capacitive sensor controller for the switch function and slider function with 16 channels sensors. All channels are calibrated for the slider functions. So this is useful for 16 switches application, too. LED driver is available (No PWM function). Features 1) Slider function 2) LED driver available 3) 2 wire serial interface 4) Power supply = 2.5V to 3.3V, I/O power supply = 1.7V to 3.3V 5) Integrated 10bit AD converter, clock and reset 6) Package VQFN032V5050 Applications It is possible to use it widely as a switch/slider such as a Mobile phone, Portable equipment, and Audiovisual apparatuses. Absolute Maximum Ratings (Ta=25) PARAMETER APPLIED VOLTAGE INPUT VOLTAGE STORAGE TEMPERATURE RANGE POWER DISSIPATION SYMBOL AVDD DVDD VAIN VDIN Tstg Pd RATING MIN -0.3 -0.3 -0.3 -0.3 -55 304 MAX 4.5 4.5 AVDD+0.3 DVDD+0.3 125 UNIT V V mW
Ambient temperature reduces a permission loss by 3.1mW per case more than 25 degrees Celsius, 1 degree Celsius.
Recommended Operating conditions PARAMETER APPLIED VOLTAGE OPERATINGTEMPERATURE RANGE SYMBOL AVDD DVDD Topr RATING MIN 2.5 1.7 -40 TYP 3.0 3.0 25 MAX 3.3 3.3 85 UNIT V V
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1/13
2009.04 - Rev.B
BU21009MUV
Technical Note
Electrical characteristics(Especially, Topr=25 and AVDD=DVDD=0 as long as it doesn't specify it.) RATING PARAMETER SYMBOL UNIT Condition MIN TYP MAX H INPUT VOLTAGE L INPUT VOLTAGE Output "H" voltage VIHIO VILIO VOHIO VOLLED Output "L" voltage VOLTXD VOLINT Input leakage current Off leakage current Standby current Current of operation IIZ IOZ IST IDD DVDDx0.8 DVSS-0.3 DVDD-0.7 AVSS DVSS DVSS -1 -1 300 DVDD+0.3 DVDDx0.2 DVDD 0.5 0.5 DVDDx0.3 0.5 1 1 2 A A A Shutdown (SDN"L") A V V V V IOH=-2[mA]. Overshoot is excluded. IOL=8[mA]. Undershoot is excluded. LED output. IOL=3[mA]. Undershoot is DVDD > 2[V] excluded. SDA/TXD DVDD 2[V] application. IOL=2[mA]. Undershoot is excluded. INT application.
A/D Converter PARAMETER Resolution Analog Input voltage change clock frequency change time Zero scale voltage full scale voltage differential Non line accurate Integrate Non line accurate SYMBOL MIN AVSS 0.2 AVDD-0.07 RATING TYP 10 77 MAX AVDD 2.0 AVSS+0.07 3 3 UNIT bit V MHz sec V V LSB LSB Condition
VAIN fadck ftim
fadck = 1[MHz]
DNL INL
CR Oscillator characteristic PARAMETER Frequency Oscillation SYMBOL fcr MIN 0.4 RATING TYP 1.1 MAX 2.0 UNIT MHz Condition
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2/13
2009.04 - Rev.B
BU21009MUV
Block Diagram, Pin configuration
SDA/TXD CLK_EXT
Technical Note
AVDD
DVDD
RXD SCL SDN CS
TSTD
INT
SREF SIN[15:0]
Sensor I/F CV translate circuit
ADC
Data correction and making to format
DVSS DVDD AVDD
MODE[1] MODE[0] AVSS TSTA SIN[15]/LED[7] SIN[4] SIN[13]/LED[6] SIN[12]
CS
SREF
SCL SDA/TXD
Conversion sequence control
Data register
SIN[0] SIN[1]/LED[0] SIN[2]
RXD Reset generation SDN Power on Reset Clock generation CR oscill ation
host I/F Power management
SIN[3]/LED[1]
INT
SIN[4] SIN[5]/LED[2] SIN[13]/LED[6] SIN[6] SIN[7]/LED[3] SIN[8] SIN[9]/LED[4] SIN[10] SIN[11]/LED[5]
MODE[1:0]
CLK_EXT
AVSS
DVSS
Sensor I/F CV translate circuit This module selects between sensor inputs. The selection sequences between all 16 channels. AD Conversion The voltage into which CV is converted is converted into a digital value. Conversion is 10 bit and full scale corresponds to AVDD. Conversion sequence control Performs timing generation for the analogue circuitry and a sequencer circuit for selection of the sensor channel for conversion. Data correction and making to format This module provides the digital intelligence of the sensor. The block includes, amongst other things, scaling, adding offsets and input filtering for de-bouncing. Registers are formatted to simplify usage by the softwareapplication. The block implements auto-calibration to manage drift in temperature, process variation, voltage variation and aging effects. Data register This stores the results for the software application. Please refer to the register map for details. HOST I/F 2 wire serial interface. Power management The power management block provides smart power control. When the sensors are not in use, the Controller automatically transitions into a low-power mode. When a sensor is touched, then the device automatically wakes up and enters its normal operation. The chip drives an INT pin for alerting the controller device in this case. Reset generation The circuit is initialized by a either a soft reset command or by the external SDN pin. Clock generation The device has an internal oscillator. Provision is also made if the application would like to make use of an external clock input.
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3/13
2009.04 - Rev.B
BU21009MUV
Pin Description Pin Name No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 SIN4
Technical Note
I/O AIn
Function sensor input4 sensor input 5 /PW Drive LEDcontrol output 2 sensor input6
Note sensor input , LED drive select -
Supply Reference AVDD AVDD AVDD AVDD AVDD AVDD AVDD AVDD AVDD AVDD AVDD AVDD AVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD DVDD AVDD AVDD AVDD AVDD AVDD
Reset Level "Hi-Z" "Hi-Z" "Hi-Z" "Hi-Z" "Hi-Z" "Hi-Z" "Hi-Z" "Hi-Z" "Hi-Z" "Hi-Z" "Hi-Z" "Hi-Z" "Hi-Z" "L" "Hi-Z" "Hi-Z" "Hi-Z" "Hi-Z" "Hi-Z" "Hi-Z"
I/O Pad
SIN5/LED2 AIn/Out SIN6 AIn
sensor input 7 sensor input , SIN7/LED3 AIn/Out /PWM Drive LED control output 3 LED drive select SIN8 AIn sensor input8 sensor input , LED drive select sensor input , LED drive select sensor input , LED drive select sensor input , LED drive select NC on the substrate is recommended. 00 = 2wires serial, internal clock Usually must be tide to "L" Usually tide to"L" "L" : Active mode "H" : Idle mode 2 "L" : Internal clock "H" : external clock "L" : 5Ah "H" : 5Bh "L" : Halt condition "H" : state of operation sensor input , LED drive select sensor input , LED drive select sensor input 9 SIN9/LED4 AIn/Out /LED control output 4 SIN10 AIn sensor input10 sensor input 11 /LED control output 5 sensor input12
SIN11/LED5 AIn/Out SIN12 AIn
SIN13/LED sensor input 13 AIn/Out 6 /LED control output 6 SIN14 AIn sensor input14 SIN15/LED sensor input 15 AIn/Out 7 /LED control output 7 TSTA AVSS MODE[0] MODE[1] TSTD CLK_EXT INT SDA/TXD SCL RXD CS SDN DVSS DVDD AVDD SREF SIN0 AIn Test input for analog block
Ground Analog ground In In In In Out In/Out In In In In Mode selection, input0 Mode selection, input1 Digital part test input External system clock input Output of interrupt Communication data sending and receiving(2wires serial) Communication synchronous clock input system clock input (2wires serial) Slave address selection (2wires serial mode) Shutdown input
Ground Digital part ground Power Digital part Power supply Power Analog part Power supply AIn AIn Standard capacitor input sensor input 0 sensor input 1 /PWM Drive LEDcontrol output 0 sensor input 2 sensor input 3 /PWM Drive LEDcontrol output 1
SIN1/LED0 AIn/Out SIN2 AIn
SIN3/LED1 AIn/Out
*1 Initial State
When internal organs power-on reset is effective Halt condition SDN="L"
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4/13
2009.04 - Rev.B
BU21009MUV
I/O Circuit CMOS INPUT CMOS Schmitt INPUT
Technical Note
CMOS OUTPUT
CIN
PAD
CIN
PAD
I
PAD
CMOS 3stute OUTPUT with ANALOG-SW
ASW AIN I PAD
CMOS Schmitt INOUT
CIN I PAD
OE
OEN
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5/13
2009.04 - Rev.B
BU21009MUV
HOST I/F 2 wire serial, BUS (Pin configuration, MODE1:000b) Slave mode only Slave Address = 5Ch,5Dh selection possible. Normal (Normal mode. 100kHz Transfer rate) Fs mode (Fast mode. 400kHz Transfer rate) also. Not adapting sequential read / write. Data format
Technical Note
tHD;STA SDA tSU;DAT SCL
Address Read ACK Data ACK Data ACK
tSU;STO
tHD;DAT
Parameter fSCL : SCL Clock Freq tHD;STA : START condition hold time tLOW : SCL "L" tHIGH : SCL "H" tHD;DAT : Data hold time tSU;DAT : Data setup time tSU;STO : START condition hold time tBUF : Free time of bus between STOP condition and START condition PROTOCOL Write Protocol S SLAVE ADDRESS W A REGISTER ADDRESS 8bit A
Standard mode MIN MAX 0 100 4.0 4.7 4.0 0.1 3.45 0.25 4.0 4.7 -
High Speed mode MIN MAX 0 400 0.6 1.3 0.6 0.1 0.9 0.1 0.6 1.3 -
Unit kHz sec sec sec sec sec sec sec
WRITE DATA 8bit
A
P
7bit = 5Ch or 5Dh Read Protocol S SLAVE ADDRESS 7bit = 5Ch or 5Dh W A
REGISTER ADDRESS 8bit from Master to Slave from Slave to Master
A
S SLAVE ADDRESS R S P R W A N
A
READ DATA
N
P
7bit = 5Ch or 5Dh 8bit = START condition = STOP condition = data direction READ (SDA HIGH) = data direction WRITE (SDA LOW) = acknowledge (SDA LOW) = not acknowledge (SDA HIGH)
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6/13
2009.04 - Rev.B
BU21009MUV
Register map Address 1*h 30h 31h 32h, 33h 4*h ECh EDh EEh EFh F0h, F1h F2h F3h, F4h F5h F6h F7h F8h, F9h FAh FBh FCh FDh FEh Register name SENS_DATA POSX POSY BTN OFFSET POS_MODE RESET CALIB DONE SENS_CH LED_CH IDLE_CH LED_LINK TIMES TH_ON2 TH_ON2_CH CMD GAIN_FILTER TH_ON TH_OFF DLED R/W R R R R R W W W W W W W W W W W W W W W W Length 1byte / channel 1byte 1byte 2byte 1byte / channel 1byte 1byte 1byte 1byte 2byte 1byte 2byte 1byte 1byte 1byte 2byte 1byte 1byte 1byte 1byte 1byte Explanation
Technical Note
Sensor output data. One for each channel. X positional value axially. Y positional value axially. Button On/Off. Offset correction data. One for each channel. XY matrix setting. Soft reset execution. Soft calibration execution. Setting done command. Sensor channel enables. LED channel enables. Idle mode release control. LED linkage to sensor input. Defines the sampling interval and number of samples required to recognize a button press. A second threshold value in the detection of a button going from OFF state to ON state. Per channel selection of whether to use TH_ON or TH_ON2. Simultaneous press and idle mode entry. Gain setting, filter function. A threshold value in the detection of a button going from OFF state to ON state. A threshold value in the detection of a button going from ON state to OFF state. Register to allow simple writing to LEDs.
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7/13
2009.04 - Rev.B
BU21009MUV
Technical Note
1*h : Sensor Output Data Name: SENS_DATA Address: 1* h (one byte per sensor channel) Description: The sensor output that converts to 10bit. Scaling, offsets and filtering (when enabled) are applied. The most significant 8 bits are presented to the software with this register. Bit7 SD_*[7] R 1 Bit6 SD_*[6] R 0 Bit5 SD_*[5] R 0 Bit4 SD_*[4] R 0 Bit3 SD_*[3] R 0 Bit2 SD_*[2] R 0 Bit1 SD_*[1] R 0 Bit0 SD_*[0] R 0
1*h R/W Initial val.
30h : X positional value axially Name: POSX Address: 30h Description: This represents the X-position of the press. The value is calculated differently depending on the matrix arrangement. For example when: When POS_MODE[0]=0 Value interprets SIN[0:7] When POS_MODE[0]=1 Value interprets SIN[10:5] Bit7 0 R Bit6 0 R Bit5 D5 R Bit4 D4 R Bit3 D3 R Bit2 D2 R Bit1 D1 R Bit0 D0 R
30h R/W
31h : Y positional value axially Name: POSY Address: 31h Description: This represents the Y-position of the press. The value is calculated differently depending on the matrix arrangement. For example when: When POS_MODE[0]=0 Value interprets SIN[8:15] When POS_MODE[0]=1 Value interprets SIN[11:4:12:3:13:2:14:1:15:0] Bit7 0 R Bit6 D6 R Bit5 D5 R Bit4 D4 R Bit3 D3 R Bit2 D2 R Bit1 D1 R Bit0 D0 R
31h R/W
32h / 33h : Button ON/OFF Name: BTN Address: 32h, 33h Description: This is the state of the sensor when considered as an ON/OFF button. Here 1 : On. 0 :Off. Bit7 CH7 CH15 R 0 Bit6 CH6 CH14 R 0 Bit5 CH5 CH13 R 0 Bit4 CH4 CH12 R 0 Bit3 CH3 CH11 R 0 Bit2 CH2 CH10 R 0 Bit1 CH1 CH9 R 0 Bit0 CH0 CH8 R 0
32h 33h R/W Initial val.
4* h : Offset Correction Data Name: OFFSET Address: 4* h (one byte per sensor channel) Description: This is the offset required to correct the sense data to half scale during the calibration procedure. Bit7 OFS_*[7] R 1 Bit6 OFS_*[6] R 0 Bit5 OFS_*[5] R 0 Bit4 OFS_*[4] R 0 Bit3 OFS_*[3] R 0 Bit2 OFS_*[2] R 0 Bit1 OFS_*[1] R 0 Bit0 OFS_*[0] R 0
4*h R/W Initial val.
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8/13
2009.04 - Rev.B
BU21009MUV
Technical Note
ECh : XY matrix setting Name: POS_MODE Address: ECh Description: Setting when two or more sensor are displayed to the first origin and position is detected. XY : This selects between two matrix configurations. 1 = X axis SIN [10 : 5] , Y axis SIN [11:4:12:3:13:2:14:1:15:0] 0 = X axis SIN [0 : 7] , Y axis SIN [8:15] POS_EN : The position tracking enable Enables the condition under which the position tracking is made effective. 1=When either of sensor exceeds the threshold, the data of the position tracking is made effective. If all registers do not exceed the threshold, the data of the position tracking is (POSX,POSY) = (0,0). 0=the position is detected regardless of the level of the sensor data, and data is made effective. Initial state: When either of sensor exceeds the threshold, the positional detection data is made effective (=1). Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 POS_EN W 1 Bit0 XY W 1
ECh R/W Initial val.
EEh : Soft Calibration Name: CALIB Address: EEh Description: This forces a chip re-calibration when a 1 is written and returns to 0 afterward automatically. Please note that one should always re-calibrate after changing the gain adjustment value. Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 CALIB W 0
EEh R/W Initial val.
EFh : Setting Done, Detect Start Name: DONE Address: EFh Description: This register should be written to following register updates. Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 DONE W 0
EFh R/W Initial val.
F0h / F1h : Sensor Channel Setting Name: SENS_CH Address: F0h / F1h Description: Individual enabling and disabling of sensor channels. 1Effective 0Not in use Bit7 SIN7 SIN15 W 0 Bit6 SIN6 SIN14 W 0 Bit5 SIN5 SIN13 W 0 Bit4 SIN4 SIN12 W 0 Bit3 SIN3 SIN11 W 0 Bit2 SIN2 SIN10 W 0 Bit1 SIN1 SIN9 W 0 Bit0 SIN0 SIN8 W 0
F0h F1h R/W Initial val.
F2h : LED Channel Setting Name: LED_CH Address: F2h Description: Enables and disables the channels to be used as LED outputs. Valid for the 8 LED outputs. 1Effective 0Not in use Bit7 LED7 W 0 Bit6 LED6 W 0 Bit5 LED5 W 0 Bit4 LED4 W 0 Bit3 LED3 W 0 Bit2 LED2 W 0 Bit1 LED1 W 0 Bit0 LED0 W 0
F2h R/W Initial val.
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9/13
2009.04 - Rev.B
BU21009MUV
Technical Note
F3h / F4h : Idle Exit Condition Name: IDLE_CH Address: F3h / F4h Description: Defines which channels cause the device to wake up - i.e. go from idle mode to normal operation on a key press. Selection is made on a per channel basis. 1Effective 0Not used Bit7 SIN7 SIN15 W 1 Bit6 SIN6 SIN14 W 1 Bit5 SIN5 SIN13 W 1 Bit4 SIN4 SIN12 W 1 Bit3 SIN3 SIN11 W 1 Bit2 SIN2 SIN10 W 1 Bit1 SIN1 SIN9 W 1 Bit0 SIN0 SIN8 W 1
F3h F4h R/W Initial val.
F5h : LED to Sensor Linkage Name: LED_LINK Address: F5h Description: Allows the LED outputs to be automatically linked to the input channels without need for any software control. 1 : It synchronizes with the button. 0 : It synchronizes with data (The register name: DLED) from host. Bit7 LED7 W 1 Bit6 LED6 W 1 Bit5 LED5 W 1 Bit4 LED4 W 1 Bit3 LED3 W 1 Bit2 LED2 W 1 Bit1 LED1 W 1 Bit0 LED0 W 1
F5h R/W Initial val.
F6h : Sampling Interval Name: TIMES Address: F6h Description: Defines the sampling interval. SAMP[1:0] : Sampling Interval Given by the following equation : 13 Sampling interval = system clock x 2 x SAMP (Example: system clock 1[MHz] time : About 8.2[msec]). Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 SAMP[1] W 0 Bit0 SAMP[0] W 0
F6h R/W Initial val.
F7h : Button OFFON Threshold Name: TH_ON2 Address: F7h Description: A second threshold value for determining a button offon judgment of sensor. The sensor output value of 8bit (register SENS_DATA) is compared with 128+ ON2 [6:0], and if it is larger, the button is determined active. Bit7 Bit6 ON2[6] W 0 Bit5 ON2[5] W 0 Bit4 ON2[4] W 1 Bit3 ON2[3] W 0 Bit2 ON2[2] W 0 Bit1 ON2[1] W 0 Bit0 ON2[0] W 0
F7h R/W Initial val.
F8h / F9h : Button OFFON Threshold Selection Name: TH_ON2_CH Address: F8h / F9h Description: This register is used to relate either threshold TH_ON or TH_ON2 to particular sensor channels for button press activity determination. 1 : TH_ON2 is applied 0 :TH_ON is applied Bit7 SIN7 SIN15 W 0 Bit6 SIN6 SIN14 W 0 Bit5 SIN5 SIN13 W 0 Bit4 SIN4 SIN12 W 0 Bit3 SIN3 SIN11 W 0 Bit2 SIN2 SIN10 W 0 Bit1 SIN1 SIN9 W 0 Bit0 SIN0 SIN8 W 0
F8h F9h R/W Initial val.
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10/13
2009.04 - Rev.B
BU21009MUV
FAh : Simultaneous Press and Idle Mode Entry Name: CMD Address: FAh Description: INTERMIT_EN : Intermittent and the drive are enable. Whether intermittent is driven at the idol mode is selected. 1Intermittent is driven. 0Intermittent is not driven. Initial stateIntermittent is driven.
Technical Note
IDLE_T[3:0] : non-detect time-out setting This sets the time the chip takes to go from normal mode to idle mode in a period key inactivity. 19 Duration = system clock x 2 x IDLE_T (Example of system clock 1[MHz]time : About 520[msec]) Bit7 Bit6 Bit5 Bit4 INTERMIT_EN W 1 Bit3 IDLE_T[3] W 0 Bit2 IDLE_T[2] W 1 Bit1 IDLE_T[1] W 1 Bit0 IDLE_T[0] W 1
FAh R/W Initial val.
FBh : Gain Setting, Filter Function Name: GAIN_FILTER Address: FBh Description: Gain adjustment and setting of noise filter function. GAIN[2:0] : gain setting It uses it for the gain adjustment in eight stages. Initial adjustment valuex1 GAIN[2:0] 000 001 010 011 100 Adjustment value x1 x 4.22 x 8.4 x 16.5 x 23 FILTER_EN : Filter enable Enables/disables setting of noise filter function 1 : enabled 0 : disabled Initial state : disabled DELTA[3:0] : Filter follow count setting The follow count to which the noise filter function is effective is set. Bit7 GAIN[2] W 0 Bit6 GAIN [1] W 0 Bit5 GAIN[0] W 0 Bit4 FILTER_EN W 0 Bit3 DELTA[3] W 0 Bit2 DELTA[2] W 0 Bit1 DELTA[1] W 1 Bit0 DELTA[0] W 0
101 x 46
110 x 69
111 x 92
FBh R/W Initial val.
FCh : Switch OFF -> ON Threshold Name: TH_ON Address: FCh Description: This register provides a threshold value for determining if a sensor has transitioned from OFF to ON. This is relative value from reference value (128d). So the absolute value of threshold is 128d + ON[6:0]. It makes a threshold value between TH_ON and TH_OFF. TH_ON must be bigger than TH_OFF (TH_ON >= TH_OFF) Maximum threshold is 256d and minimum value is 128d. Bit7 Bit6 ON[6] W 0 Bit5 ON[5] W 0 Bit4 ON[4] W 1 Bit3 ON[3] W 0 Bit2 ON[2] W 0 Bit1 ON[1] W 0 Bit0 ON[0] W 0
FCh R/W Initial val.
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11/13
2009.04 - Rev.B
BU21009MUV
Technical Note
FDh : Switch ON -> OFF Threshold Value Name: TH_OFF Address: FDh Description: This register provides a threshold value for transitioning from ON to OFF. This is relative value from reference value (128d). So absolute value of threshold is128d + OFF[6:0]. It makes a threshold value between TH_ON and TH_OFF. TH_OFF must be smaller than TH_ON (TH_OFF =< TH_ON) Maximum value is 256d and minimum value is 128d. Bit7 Bit6 OFF[6] W 0 Bit5 OFF[5] W 0 Bit4 OFF[4] W 0 Bit3 OFF[3] W 0 Bit2 OFF[2] W 0 Bit1 OFF[1] W 0 Bit0 OFF[0] W 1
FDh R/W Initial val.
FEh : LED Port Data Name: DLED Address: FEh Description: When LED is not linked with the sensor, it becomes a simple digital output that controls the LED. 1 : Light. 0 : Turned off. Bit7 D7 W 0 Bit6 D6 W 0 Bit5 D5 W 0 Bit4 D4 W 0 Bit3 D3 W 0 Bit2 D2 W 0 Bit1 D1 W 0 Bit0 D0 W 0
FEh R/W Initial val.
Operation mode This IC has a normal mode, idle mode and a shutdown mode as states of operation. Normal mode This is the normal operation of the device. Output pin INT="L". Idle mode This is the mode when the normal mode times out due to inactivity on the keys. In this mode the control interface is still alive.
*Usually time-out is aimed at about 200msec or less. *Transition between normal and idle modes is automatic and without software control.
Shutdown mode In this mode the device is completely stopped - and reset. This is achieved by making the terminal SDN L. All analog circuits and the logic circuits are stopped. The return from the shutdown mode returns by making the terminal SDN H.
*After shut-down all registers have their default values.
Interface and system clock selection I/F selection with MODE [1:0] pin. System clock selection by RXD. Using 2wires serial bus mode (MODE1:000b) The 2wires serial bus is used for host I/F. RXD=0 in the system clock: Built-in oscillator is used. RXD=1 in the system clock: The clock input from CLK_EXT is used. Initialization procedure A normal power on sequence is: (1) Power on (2) Setup the registers (3) Write `1' to 0xEF (done register) Power supply turning on procedure You should always power on DVDD at the same time as AVDD or before AVDD.
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12/13
2009.04 - Rev.B
BU21009MUV
Ordering part number
Technical Note
B
Part No
U
2
Part No
1
0
0
9
M
U
V
-
E
2
Package MUV : VQFN032V5050
Packaging and forming specification E2Embossed tape and reel
VQFN032V5050
5.00.1
5.0 0.1

Tape Quantity Direction of feed Embossed carrier tape 2500pcs E2
The direction is the 1pin of product is at the upper left when you hold
1PIN MARK
1.0MAX
S
+0.03 0.02 -0.02 (0.22)
( reel on the left hand and you pull out the tape on the right hand
)
0.08 S C0.2
0.4 0.1
32
3.40.1
1 8 9
25 24 17
16
0.75 0.5
3.4 0.1
+0.05 0.25 -0.04
1pin
Direction of feed
(Unit : mm)
Reel
Order quantity needs to be multiple of the minimum quantity.
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13/13
2009.04 - Rev.B
Notice
Notes
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