UPD17P207GF-003-3B9 datasheet(8/32 Pages) NEC

Part #	UPD17P207GF-003-3B9

Description	4-BIT SINGLE-CHIP MICROCONTROLLER WITH LCD CONTROLLER/DRIVER AND A/D CONVERTER FOR INFRARED REMOTE CONTROL TRANSMITTER

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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µPD17P207

8

(cont’d)

Pin No.

Symbol

Function

Output Type

On Reset

Port 1A or serial interface.

Port 1A and serial interface are switched by SIOEN of the

register file.

58

P1A0/SCK

• P1A0 to P1A2

· 3-bit I/O port

CMOS,

Input

59

P1A1/SO

· Enabling setting of inputs or outputs of 3 bits

push-pull

(Grouped I/O)

60

P1A2/SI

• SCK, SO, SI

· SCK: Serial clock I/O

· SO:

Serial data output

· SI:

Serial data input

61

REM

Signal output to an infrared remote controller.

CMOS,

Low-level

Active-high output

push-pull

output

62

VDD

Positive power supply.

–

63

XIN

These pins are connected to a 4-MHz ceramic or crystal

64

XOUT

resonator for main clock oscillation.

System reset input

65

RESET

System is reset when low level is input to this pin.

–

Input

While this pin is low, oscillation of main clock is stopped.

Only

µPD17P207-001 has internal pull-up resistor.

Output of the voltage regulator for the subclock oscillation

66

VREG

circuit.

–

Connect external 0.1-

µF capacitor to this pin.

Output for detection of a program overrun.

N-channel,

High-

67

WDOUT

Outputs low level when the watchdog timer overflows or the

open drain

impedance

stack overflows/underflows. Use this pin after connecting to

the RESET pin.

68

XTIN

These pins are connected to a 32.768-kHz crystal oscillator

–

(Oscillates.)

69

XTOUT

for subclock oscillation.

71

VLCDC

Input to regulate the reference voltage to drive LCD.

–

70

VLCD0

Reference voltage outputs to drive LCD.

72

VLCD1

•VLCD0:

Reference voltage output

73

VLCD2

•VLCD1:

Doubler output (Two times the reference voltage)

–

•VLCD2:

Tripler output (Three times the reference voltage)

74

CAPH

These pins are connected to a capacitor to boost the

––

75

CAPL

LCD drive voltage.

(Oscillation

stops.)

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UPD17P207GF-003-3B9 Datasheet(PDF) 8 Page - NEC

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