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DATA SHEET
MOS INTEGRATED CIRCUIT
PD168110
MICROSTEP DRIVER FOR DRIVING CAMERA LENS
DESCRIPTION
The PD168110 is a monolithic 2-channel H bridge driver that consists of a CMOS controller and a MOS output stage. It can reduce the current consumption and the voltage loss at the output stage compared with a conventional driver using bipolar transistors, thanks to employment of a MOS process. can be substantially reduced during operation. This product is ideal for driving the motor of a digital still camera as it can switch over between two-phase excitation driving and microstep driving, using a stepper motor. This product employs a P-channel MOSFET on the high side of the output stage, eliminating a charge pump. As a result, the circuit current consumption
FEATURES
O Two H bridge circuits employing power MOSFET O Current feedback 64-step microstep driving and two-phase excitation driving selectable O Low on-resistance: 2 MAX. O 3 V power supply
Minimum operating power supply voltage VDD = 2.7 V O Under voltage lockout circuit Shuts down internal circuitry at VDD = 1.7 V TYP. O 24-pin TSSOP
ORDERING INFORMATION
Part Number Package 24-pin plastic TSSOP (5.72 mm (225))
PD168110MA-6A5
The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version.
Not all products and/or types are available in every country. Please check with an NEC Electronics sales representative for availability and additional information.
Document No. S15840EJ2V0DS00 (2nd edition) Date Published June 2005 NS CP(K) Printed in Japan
The mark
shows major revised points.
2003
PD168110
PIN FUNCTIONS
Package: 24-pin TSSOP
MODE CLK LGND COSC MOB PGND2 OUT2B VM2 OUT2A FB2 PS OE
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
RESETB CW VDD FIL2 FIL1 FB1 OUT1B VM1 OUT1A PGND1 MOBSEL STOP
Pin 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
Pin Name MODE CLK LGND COSC MOB PGND2 OUT2B VM2 OUT2A FB2 PS OE STOP MOBSEL PGND1 OUT1A VM1 OUT1B FB1 FIL1 FIL2 VDD CW RESETB
Pin Function Microstep/2-phase excitation switch pin Pulse input pin Control block GND pin Pin connecting capacitor for output oscillator Phase detection output pin Output block GND pin Channel 2 output B Motor power pin Channel 2 output A Channel 2 current detection resistor connecting pin Power save mode pin Output enable pin Stop mode pin MOB output select pin Output block GND pin Channel 1 output A Motor power pin Channel 1 output B Channel 1 current detection resistor connecting pin Channel 1 filter capacitor connecting pin Channel 2 filter capacitor connecting pin Control block power pin Revolution direction setting pin Reset input pin
2
Data Sheet S15840EJ2V0DS
PD168110
BLOCK DIAGRAM
MODE MOBSEL RESET CLK CW PS STOP
VDD DECODER VM1 VM2 PULSE GENERATER
EVR1 COSC LGND OSC +
EVR2 MOB +
CURRENT SET
FILTER
FILTER
FB1
Current Sense1
VM
-+
Internal Block
+-
VM
Current Sense2
FB2
H BRIDGE ch1
H BRIDGE ch2
PGND
OUT1A OUT1B
FIL1
OE
FIL2
OUT2A OUT2B
PGND
Truth Table
RESET H H H H H H H H H H L X X X X X CLK CW L H L H L H X X X X X OE H H H H H H L H H H X PS L L L L L L X L H H X STOP L L L L L L X H H L X MODE H H H H L L X H H H X MOBSEL L L H H X X X X X X X Operation Mode Microstep CW mode MOB: 1 pulse/cycle Microstep CCW mode MOB: 1 pulse/cycle Microstep CW mode MOB: 4 pulses/cycle Microstep CCW mode MOB: 4 pulses/cycle 2-phase CW mode 2-phase CCW mode Output Hi-Z STOP mode after MOB = L (CLK must be input until MOB = L) PS mode after MOB = L (CLK must be input until MOB = L) Setting prohibited Reset mode
H: High level, L: Low level, X: High level or low level
Data Sheet S15840EJ2V0DS
3
PD168110
Command Input Timing Chart In microstep mode
RESET 1 CLK 2 3 4 5 6 7 8 9 10 1112 1314 15 16 17 18 19 20 21 22 23242526272829 30
CW
OE
PS
STOP 1 PULSE OUT (internal) Chopping pulse Power save mode MOB
Output when MOBSEL = H STOP mode stopped
2
34
5 6 7 8 9 10 111213 1415 16 1718 17 16
15 1413
Reset status
CW mode
CCW mode
Output Hi-Z
Reset status
4
Data Sheet S15840EJ2V0DS
PD168110
Standard Connection Diagram Microstep/2-phase excitation driving
CPU
MODE MOBSEL RESET
CLK
CW
PS
STOP
VDD 3.3 V VM1 VM2 5.0 V 330 pF COSC LGND OSC + PULSE GENERATER VDD DECODER
EVR1
EVR2 MOB 10 k +
CURRENT SET
FILTER
FILTER
-+ FB1 Current Sense1 VM H BRIDGE ch1
Internal Block
+-
VM
Current Sense2
FB2
1000 pF
2 k
H BRIDGE ch2
2 k
1000 pF
PGND
OUT1A OUT1B
FIL1 OE FIL2 1000 pF 1000 pF from CPU
OUT2A OUT2B
PGND
M
Only 2-phase excitation driving
CPU
MODE MOBSEL RESET
CLK
CW
PS
STOP
VDD 3.3 V VM1 VM2 5.0 V COSC LGND VDD -+ FB1 Current Sense1 VM H BRIDGE ch1
Internal Block
DECODER
PULSE GENERATER
VDD
10 k EVR1 OSC + EVR2 MOB + VDD +- VM Current Sense2 FB2 CURRENT SET
FILTER
FILTER
H BRIDGE ch2
PGND
OUT1A OUT1B
FIL1
OE
FIL2
OUT2A OUT2B
PGND
From CPU
M
Data Sheet S15840EJ2V0DS
5
PD168110
Output Timing Chart * Microstep output mode
position
100 99.5 98.1 95.7 92.4 88.2 83.1 77.3 70.7 63.4 55.6 47.1 38.3 29.0 19.5 9.8 0 -9.8 -19.5 -29.0 -38.3 -47.1 -55.6 -63.4 -70.7 -77.3 -83.1 -88.2 -92.4 -98.1 -95.7 -100 -99.5
Ch 1 current
0
5
10
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65
Ch 2 current
100 99.5 98.1 95.7 92.4 88.2 83.1 77.3 70.7 63.4 55.6 47.1 38.3 29.0 19.5 9.8 0 --9.8 --19.5 --29.0 --38.3 --47.1 --55.6 --63.4 --70.7 --77.3 --83.1 --88.2 --92.4 --98.1 --95.7 --100 --99.5
0
5
10
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25
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55
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65
MOB output (when MOBSEL = "L")
0
5
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65
MOB output (when MOBSEL = "H")
0
5
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65
CLK input
0
5
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65
The horizontal axis indicates the number of steps. This figure shows an example in the CW mode. The pulse advances in synchronization with the rising edge of CLK. The current flows into ch 1 and ch 2 in the positive direction when it flows from OUT1A to OUT1B, and in the negative direction when it flows from OUT1B to OUT1A (the values shown above are ideal values and do not indicate the actual values).
6
Data Sheet S15840EJ2V0DS
PD168110
Output Timing Chart * 2-phase excitation output mode
Ch 1 current
100
-100 0 1 2 3 4 Ch 2 current 100 5 6 7 8
-100 0 1 2 3 4 5 6 7 8
MOB output
0
1
2
3
4 CLK input
5
6
7
8
0
1
2
3
4
5
6
7
8
The horizontal axis indicates the number of steps. This figure shows an example in the CW mode. The current flows into ch 1 and ch 2 in the positive direction when it flows from OUT1A to OUT1B, and in the negative direction when it flows from OUT1B to OUT1A.
Data Sheet S15840EJ2V0DS
7
PD168110
Relationship Between Revolution Angle, Phase Current, and Vector Amount (64 microsteps)
Phase A - Phase Current Min. - 2.5 12.4 22.1 31.3 40.1 48.6 58.4 65.7 72.3 78.1 83.2 87.4 90.7 93.2 94.5 - Typ. 0 9.8 19.5 29.0 38.3 47.1 55.6 63.4 70.7 77.3 83.1 88.2 92.4 95.7 98.1 100 100 Max. 3.8 17.0 26.5 36.1 45.3 54.1 62.6 68.4 75.7 82.3 88.1 93.4 97.4 100.7 103.0 104.5 - Phase B - Phase Current Min. - 94.5 93.2 90.7 87.4 83.2 78.1 72.3 65.7 58.4 48.6 40.1 31.3 22.1 12.4 2.5 - Typ. 100 100 98.1 95.7 92.4 88.2 83.1 77.3 70.7 63.4 55.6 47.1 38.3 29.0 19.5 9.8 0 Max. - 104.5 103.0 100.7 97.4 93.2 88.1 82.3 75.7 68.4 62.6 54.1 45.3 36.1 26.5 17.0 3.8 Vector Amount Typ. 100 100.48 100 100.02 100.02 99.99 99.98 99.97 99.98 99.97 99.98 99.99 100.02 100.02 100 100.48 100
Step
Revolution Angle 0 5.625 11.250 16.875 22.500 28.125 33.750 39.375 45 50.625 56.250 61.875 67.500 73.125 78.750 84.375 90
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
The above values are ideal values and are not guaranteed values.
8
Data Sheet S15840EJ2V0DS
PD168110
FUNCTION DESCRIPTION
2-phase excitation driving mode By allowing a current of 100% to flow into output ch1 and ch2 at the same time, a motor can be driven with the larger torque. The two-phase excitation driving mode and microstep driving mode are switched by the MODE pin. In the twophase excitation driving mode, the chopping pulse circuit does not operate. Microstep driving of stepper motor To position a stepper motor with high accuracy, the PD168110 has a function to hold constant the current flowing through the H bridge by a vector value and to stop one cycle in 64 steps. To realize the microstep driving mode, the driver internally realizes the following functions. * Detecting the current flowing into each channel as a voltage value by a sense resistor * Synthesizing the dummy sine wave of the half-wave generated by the internal D/A and PWM oscillation wave for chopping operation * The driver stage performs PWM driving based on the result of comparing the detected voltage value and synthesized waves. The internal dummy sine wave is of 64 steps per cycle, so that the stepper motor can be driven in 64 steps. The microstep driving mode and two-phase excitation driving mode are switched by an external pin.
+
M A
Concept of microstep driving operation
MOB output The MOB output pin outputs "L" if the current of ch1 or ch2 reaches 100% in the microstep output mode, or if the current of ch 1 reaches +100%. In the two-phase excitation output mode, the MOB pin outputs "L" when the current of ch1 and ch2 reaches +100%. The excitation position of the stepper motor can be checked by monitoring the MOB output. The MOB output also indicates the stop position information in the stop mode to be explained below. The MOB output goes into a Hi-Z state (output H level if pulled up) when OE = "L". Stop mode If the stop mode is set by the STOP pin, the pulse is automatically output until MOB = "L" when CLK is input. If MOB = "L" in the stop mode, the pulse is not output even when CLK is input, and the output holds the excitation status. To advance the pulse, release the stop mode and restore the normal mode.
Data Sheet S15840EJ2V0DS
9
PD168110
Reset function When RESET = "L", initialization is executed and the output goes into a Hi-Z state. When RESET = "H", excitation is started with the current of ch1 at +100% and the current of ch2 at 0% (one-phase excitation position). To perform two-phase excitation driving, excitation is started with the currents of ch1 and ch2 at +100% after the mode has been set. Be sure to execute a reset operation after power application. MOB outputs "L" until the pulse is output when RESET goes "L". Output enable (OE) pin The pulse output can be forcibly stopped from an external source by using the OE pin. When OE = "L", the output is forcibly made to go into a Hi-Z state. Standby function The PD168110 can enter the standby mode when the pulse is not output and when PS = "H" and STOP = "H". In the standby mode, as many internal circuits as possible are stopped so that the self current consumption can be reduced. In the standby mode, the current consumption is 1 A MAX. when external CLK input is stopped. While CLK is being input, the current consumption is reduced to 300 A MAX. by the current flowing into the input buffer. The standby mode is released when PS = "L" and STOP = "L". Under voltage lockout circuit (UVLO) This function is used to forcibly stop the operation of the IC to prevent malfunction of the circuits if VDD of the IC drops during operation. Note that if the VDD voltage abruptly drops in the order of s, this function may not operate. VM pin current shutdown circuit A circuit that prevents a current from flowing into the VM pin when VDD = 0 V is provided. Therefore, the current flowing into the VM pin is cut off when VDD = 0 V. A current of up to 3 A flows into the VM pin when VDD is applied so that the voltages on the VDD and VM pins can be monitored.
10
Data Sheet S15840EJ2V0DS
PD168110
OPERATION DESCRIPTION
* Setting output current The peak value of the output current (when current of ch 1 or ch 2 is 100%) is determined by the resistor RFB that is connected to FB1 and FB2. This IC has an internal reference power supply VREF (500 mV TYP.) for comparing current, and drives the stepper motor with the current value calculated by RFB and VREF as the peak output current value. Peak output current value IMAX (A) VREF (V) / RFB () x Output detection ratio * Pulse output The motor is driven by inputting a pulse to the CLK pin. The motor advances by one pulse at the rising edge of the CLK signal. When MODE = "H", the motor is driven in the 64-microstep driving mode, and the driving current of each step is determined based on the internal motor excitation position information and revolution direction. When MODE = "L", the two-phase excitation mode is selected, and the current direction (100% drive) of ch 1 and ch 2 are switched each time a pulse has been input. * Setting motor revolution direction The revolution direction of the motor is set by CW. In the CW mode (CW = "L"), the current of ch2 is output, 90 degrees in phase behind the current of ch1. In the CCW mode (CW = "H"), the current of ch2 is output, 90 degrees in phase ahead of the current of ch1.
CW Pin L H Operation Mode CW mode (forward revolution) CCW mode (reverse revolution)
* Setting stop mode (valid only in microstep driving mode) When STOP = "H", the motor advances to the position of MOB output = "L", and the output status is held. The excitation status is not changed even when a pulse is input to CLK while MOB = "L" when STOP = "H". The pulse can be advanced when STOP = "L".
STOP L H Operation Mode Normal mode Stop mode
Caution
If STOP = "L" before the stop mode is set (until MOB = "L"), the operation is performed in the same manner as in the normal mode.
Data Sheet S15840EJ2V0DS
11
PD168110
* Power save mode (valid only in microstep driving mode) When PS = "H" and STOP = "H", the motor advances to the position of MOB output = "L" and then the output goes to a Hi-Z state. The internal circuitry is stopped as much as possible and the standby mode is set. The power save mode is released when PS = "L" and STOP = "L".
STOP L H Normal mode Power save mode (only when STOP = "H") Operation Mode
Caution Inputting PS = "H" and STOP = "L" is prohibited. * Setting output enable When OE = "H", the motor is driven (output excitation status). Be sure to set OE to "H" to drive the motor.
STOP L H Output Hi-Z Enable mode Operation Mode
* Selecting two-phase excitation/microstep driving mode The MODE pin can be used to select the two-phase excitation or microstep driving mode. When MODE = "H", the microstep driving mode is selected. When MODE = "L", the two-phase excitation mode (both ch 1 and ch 2 are driven at +100% or -100%) is selected. The PD168110 is initialized immediately after a RESET operation, so excitation is started from the position at which the output current of ch 1 is 100% and the output current of ch 2 is 0% in the microstep driving mode, and from the position at which the output currents of both ch 1 and ch 2 are +100% in the two-phase excitation driving mode. If the mode is changed from the microstep to the two-phase, the position of the microstep mode is retained until CLK is input. When the first CLK is input, pulse output is started, the operation skips to the two-phase position of the next quadrant, and driving is started.
2-phase excitation stop position Skips to next quadrant
Microstep stop position (example 1) (1)
MODE L H
Operation Mode 2-phase excitation Microstep driving
Microstep stop position (example 2) (3)
(2)
Concept of switching operation mode from microstep to 2-phase excitation
12
Data Sheet S15840EJ2V0DS
PD168110
* Selecting MOB output (in microstep driving mode only) The output function of MOB can be selected by MOBSEL. When MOBSEL = "L", MOB is output at the position where the current of ch1 is +100% and the current of ch2 is 0%. When MOBSEL = "H", MOB is output at the position where the current of ch1 or ch2 is 100%.
MOBSEL L H MOB Output Current of ch1 is +100% and current of ch2 is 0% (1 pulse/cycle). Current of ch1 or ch2 is 100% (4 pulses/cycle).
RESET position
100 99.5 98.1 95.7 92.4 88.2 83.1 77.3 70.7 63.4 55.6 47.1 38.3 29.0 19.5 9.8 0 --9.8 --19.5 --29.0 --38.3 --47.1 --55.6 --63.4 --70.7 --77.3 --83.1 --88.2 --92.4 --98.1 --95.7 --100 --99.5
Ch 1 current
0
5
10
15
20
25
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35
40
45
50
55
60
65
Ch 2 current
100 99.5 98.1 95.7 92.4 88.2 83.1 77.3 70.7 63.4 55.6 47.1 38.3 29.0 19.5 9.8 0 --9.8 --19.5 --29.0 --38.3 --47.1 --55.6 --63.4 --70.7 --77.3 --83.1 --88.2 --92.4 --98.1 --95.7 --100 --99.5
0
5
10
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30
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55
60
65
MOB output MOBSEL = "L"
0
5
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MOB output MOBSEL = "H"
0
5
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60
65
Data Sheet S15840EJ2V0DS
13
PD168110
ABSOLUTE MAXIMUM RATINGS (TA = 25C: GLASS EPOXY BOARD OF 100 mm x 100 mm x 1 mm WITH C OPPER FOIL OF 15%)
Parameter Power supply voltage Symbol VDD VM Input voltage Output pin voltage DC output current Instantaneous output current Power consumption Peak junction temperature Storage temperature VIN VOUT ID(DC) ID(pulse) PT TCH(MAX) Tstg DC PW < 10 ms, Duty 20% Control block Motor block Conditions Rating -0.5 to +6.0 -0.5 to +6.0 -0.5 to VDD +0.5 6.2 0.4 0.7 0.7 150 -55 to +150 V V A/ch A/ch W C C Unit V
RECOMMENDED OPERATING CONDITIONS (TA = 25C: GLASS EPOXY BOARD OF 100 mm x 100 mm x 1 mm WITH COPPER FOIL OF 15%)
Parameter Power supply voltage Symbol VDD VM Input voltage DC output current Instantaneous output current MOB pin output sink current Operating temperature range VIN ID(DC) ID(pulse) IMOB TA DC PW < 10 ms, Duty 20% Open-drain output -10 Conditions Control block Motor block MIN. 2.7 2.7 0 -0.35 -0.6 TYP. MAX. 3.6 5.5 VDD +0.35 +0.6 5 75 Unit V V V A/ch A/ch mA C
14
Data Sheet S15840EJ2V0DS
PD168110
ELECTRICAL CHARACTERISTICS (UNLESS OTHERWISE SPECIFIED, VDD = VM = 3 V, TA = 25C)
Parameter VDD pin current after reset VDD pin current in standby mode Symbol IDD(STB) IDD(STB2) IDD(STB3) VDD pin current during operation VM pin current High-level input current Low-level input current High-level input voltage Low-level input voltage Input hysteresis voltage H bridge on-resistance RON Output turn-on time Output turn-off time Internal reference voltage Output detection ratio tON tOFF VREF IM = 0.1 A, with 5 k sense resistor connected IDD(ACT) IM(OFF) IIH IIL VIH VIL Vhys IM = 0.35 A, sum of upper and lower stages, FB1 = FB2 = 0 V RM = 20 OE pin output SW time 0.02 0.02 450 950 500 1050 VM = 5.5 V per VM pin, after reset and in standby mode VIN = VDD VIN = 0 V 2.7 V VDD 3.6 V 2.7 V VDD 3.6 V 0.3 2.0 0.5 0.5 550 1150 -1.0 0.7 x VDD 0.3 x VDD Conditions External CLK stopped External CLK stopped External CLK is input MIN. TYP. MAX. 1.0 30 300 3.0 3.0 1.0 Unit
A A A
mA
A A A
V V V
s s
mV
Cautions 1. The undervoltage lockout detection circuit (UVLO) operates at 1.7 V TYP. whereupon the output goes into a Hi-Z state. Internal data such as the excitation position information is reset. The UVLO circuit does not operate after reset. 2. A shutdown circuit that prevents a current from flowing into the VM pin when VDD = 0 V is provided.
Data Sheet S15840EJ2V0DS
15
PD168110
PACKAGE DRAWING
24-PIN PLASTIC TSSOP (5.72 mm (225))
24 13 detail of lead end F G R
P
L S
1
12
E
A A' S
H I J
C D M
M
K B
N
S
NOTE Each lead centerline is located within 0.10 mm of its true position (T.P.) at maximum material condition.
ITEM A A' B C D E F G H I J K L M N P R S
MILLIMETERS 6.650.10 6.50.1 0.575 0.5 (T.P.) 0.220.05 0.10.05 1.2 MAX. 1.00.05 6.40.1 4.40.1 1.00.1 0.170.025 0.5 0.10 0.08 3+5 -3 0.25 0.60.15 P24MA-50-6A5
16
Data Sheet S15840EJ2V0DS
PD168110
RECOMMENDED SOLDERING CONDITIONS
The PD168110 should be soldered and mounted under the following recommended conditions. For soldering methods and conditions other than those recommended below, contact an NEC Electronics sales representative. For technical information, see the following website. Semiconductor Device Mount Manual (http://www.necel.com/pkg/en/mount/index.html) Recommended Soldering Conditions for Surface Mounting Type
PD168110MA-6A5 24pin TSSOP
Soldering Method Soldering Conditions Recommended Condition Symbol Infrared reflow Package peak temperature: 260C, Time: 60 seconds max. (at 220C or higher), Count: Three times or less, Exposure limit: None, Flux: Rosin flux with low chlorine (0.2 Wt% or below) recommended IR60-00-3
Caution Do not use different soldering methods together (except for partial heating).
Data Sheet S15840EJ2V0DS
17
PD168110
* The information in this document is current as of June, 2005. The information is subject to change without notice. For actual design-in, refer to the latest publications of NEC Electronics data sheets or data books, etc., for the most up-to-date specifications of NEC Electronics products. Not all products and/or types are available in every country. Please check with an NEC Electronics sales representative for availability and additional information. * No part of this document may be copied or reproduced in any form or by any means without the prior written consent of NEC Electronics. NEC Electronics assumes no responsibility for any errors that may appear in this document. * NEC Electronics does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from the use of NEC Electronics products listed in this document or any other liability arising from the use of such products. No license, express, implied or otherwise, is granted under any patents, copyrights or other intellectual property rights of NEC Electronics or others. * Descriptions of circuits, software and other related information in this document are provided for illustrative purposes in semiconductor product operation and application examples. The incorporation of these circuits, software and information in the design of a customer's equipment shall be done under the full responsibility of the customer. NEC Electronics assumes no responsibility for any losses incurred by customers or third parties arising from the use of these circuits, software and information. * While NEC Electronics endeavors to enhance the quality, reliability and safety of NEC Electronics products, customers agree and acknowledge that the possibility of defects thereof cannot be eliminated entirely. To minimize risks of damage to property or injury (including death) to persons arising from defects in NEC Electronics products, customers must incorporate sufficient safety measures in their design, such as redundancy, fire-containment and anti-failure features. * NEC Electronics products are classified into the following three quality grades: "Standard", "Special" and "Specific". The "Specific" quality grade applies only to NEC Electronics products developed based on a customerdesignated "quality assurance program" for a specific application. The recommended applications of an NEC Electronics product depend on its quality grade, as indicated below. Customers must check the quality grade of each NEC Electronics product before using it in a particular application. "Standard": Computers, office equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronic equipment and industrial robots. "Special": Transportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, safety equipment and medical equipment (not specifically designed for life support). "Specific": Aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems and medical equipment for life support, etc. The quality grade of NEC Electronics products is "Standard" unless otherwise expressly specified in NEC Electronics data sheets or data books, etc. If customers wish to use NEC Electronics products in applications not intended by NEC Electronics, they must contact an NEC Electronics sales representative in advance to determine NEC Electronics' willingness to support a given application. (Note) (1) "NEC Electronics" as used in this statement means NEC Electronics Corporation and also includes its majority-owned subsidiaries. (2) "NEC Electronics products" means any product developed or manufactured by or for NEC Electronics (as defined above).
M8E 02. 11-1

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