UPD17072GB 查看數據表（PDF） - NEC => Renesas Technology

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UPD17072GB

4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM

NEC => Renesas Technology 

µPD17072,17073

Pin No.

Symbol

QFP TQFP

23

26 VDD

27

24

28

XOUT

25

29 XIN

26

30 REG1

Function

Output format

Positive power supply.

Supply 1.8 to 3.6 V (TA = –20 to +70 °C) to operate

all functions.

Do not apply voltage higher than that of VDD pin to

any pin other than VDD.

Pins for connecting crystal resonator for system

clock oscillation.

Output of voltage regulator for oscillation circuit.

Connect this pin to GND via 0.1-µF capacitor.

—

CMOS push-pull

—

—

At power-ON

reset

—

—

—

REG1

0.1 µF

27

31 REGLCD0

• REGLCD1, REGLCD0

—

28

32 CAPLCD0

29

33 CAPLCD1

LCD drive power pins.

• CAPLCD1, CAPLCD0

30

34 REGLCD1

Connect capacitors for doubler circuit to generate

LCD drive voltage, across these pins.

To configure doubler circuit, connect capacitors

as shown below.

REGLCD1

C1 = C2 = 0.1 µF

C3 = 0.01 µF

C1

CAPLCD1

C3

CAPLCD0

REGLCD0

C2

Caution The value of the LCD drive voltage differs

if the values of C1, C2, and C3 are changed

because of the configuration of the doubler

circuit.

—

13

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