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MSM6502B/6512

¡ Semiconductor

GENERAL DESCRIPTION

The MSM6502B/6512 is a low-power, 4-bit microcontroller implemented in complementary

metal-oxide semiconductor technology.

The device is ideally suited to battery-powered systems such as watches and game machines

because it can directly drive LCDs with up to 108 picture elements.

FEATURES

• ROM

: 2000 words ¥ 8 bits

• RAM

: 128 words ¥ 4 bits

• Number of instructions

: 68

• Clock oscillation

: Crystal 32.768 kHz

• Cycle time

: 91.5 ms

• Timer interrupt

: Dual (16,128 Hz)

• I/O port

Input-output port

: 2 ports ¥ 4 bits

Input port

: 1 port ¥ 4 bits

• LCD drive

: 108 (4 ¥ 27) picture elements

• Buzzer

: 2000/1000/512 Hz/Soft

• Interrupt

: Three sources (external; two timer sources)

• Stack

: Nesting RAM

Stack pointer = 7 bits

• Power down

: Halt mode available

• Operating power supply voltage : 2.4 V to 3.6 V

• Package options:

56-pin plastic QFP (QFP56-P-910-0.65-K)

: (Product name : MSM6502B-¥¥¥GS-K,

MSM6512-¥¥¥GS-K)

56-pin plastic QFP (QFP56-P-910-0.65-2K)

: (Product name : MSM6502B-¥¥¥GS-2K,

MSM6512-¥¥¥GS-2K)

¥¥¥ indicates the code number.

¡ Semiconductor

MSM6502B/6512

Low-power and Built-in LCD Driver 4-Bit Microcontroller

E2E0018-27-Y4

This version: Jan. 1998

Previous version: Mar. 1996