MSM64P155-XXXGS-BK Ver la hoja de datos (PDF) - Oki Electric Industry

Número de pieza

componentes Descripción

Fabricante

MSM64P155-XXXGS-BK

4-Bit Microcontroller with Built-in LCD Driver and Melody Circuit

Oki Electric Industry 

¡ Semiconductor

MSM64P155/64P155L

PIN DESCRIPTIONS

Basic Functions

Function Pin Symbol Type

Description

Power

Supply

23

VSS

— Digital supply voltage (0 V)

100

VDD1

— Digital positive power supply (1.5 V spec.)

Bias output for LCD driver (3.0 V spec.)

99

VDD2

— Digital positive power supply (3.0 V spec.)

Bias output for LCD driver (1.5 V spec.)

98

VDD3

— Bias output for LCD driver (+4.5 V)

97

C1

— Pins for connecting a capacitor for generating LCD driving bias

96

C2

—

4

VPP

— Positive power supply for writing programming data to PROM

(+12.5 V)

Oscillation

2

3

OSC0

OSC1

I Clock oscillation pins:

Either a crystal (32.768 kHz) and a capacitor (10 to 30 pF) are

O connected to these pins or a resistor (1 MW) is.

Test

RESET

30

TST1

29

TST2

28

TST3

1

RESET

I Input pins for test:

I These pins are internally pulled down to VSS.

I When this pin is set to "H" level, the 256 Hz and 4 Hz interrupts are

enabled, and then the MSM64P155 can be used as an OTP version

of the MSM64152A, MSM64153A, and MSM64158A.

I System reset input pin :

Setting this pin to "H" level puts this device into a reset state.

Then, setting this pin to "L" level starts executing an instruction from

address 000H.

This pin is internally connected to VSS through a pull-down resistor.

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