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¡ Semiconductor

MSM65355

¡ Semiconductor

MSM65355

8-Bit Microcontroller with A/D Converter (with LCD Driver)

GENERAL DESCRIPTION

The MSM65355 is a high-performance 8-bit microcontroller that employs OKI original nX-8/50

CPU core. The MSM65355 includes 16K bytes of program memory, 384 bytes of data memory,

an LCD driver, an A/D converter and shift registers. Also available is the MSM65P355, which

replace the on-chip program memory with one-time PROM.

FEATURES

• Operating range

Operating voltage

:

2.7 to 5.5V

Operating temperature

:

–20 to +70

°C

Operating frequency (dual clock)

High speed side

:

Low speed side

:

Current consumption (Typ.)

High speed side

:

Low speed side

:

• Minimum instruction execution time

:

400ns (@ 10MHz), 800ns (@ 5MHz)

• CPU core

:

8-bit CPU core nX-8/50

• General memory space

:

Internal 16K-byte program memory

• Local memory space

:

Internal 384-byte data memory + SFR

• LCD driver

:

16 ¥ 4 (1/4, 1/3, and 1/2 duties are

selectable with software.)

• I/O port

Input-output port

:

5 ports ¥ 8 bits, 1 port ¥ 6 bits,

1 port ¥ 5 bits, 1 port ¥ 4 bits

Input port

:

1 port ¥ 8 bits, 1 port ¥ 1 bit

Output port

:

1 port ¥ 1 bit

• Timers

:

8-bit auto-reload timer ¥ 4 (clock for PWM

frequency setting, shift clock for shift

register)

16-bit auto-reload timer ¥ 1

Watchdog timer ¥ 1

Watch timer counter ¥ 1

• Counters

:

Time base counter ¥ 1 (14-bit)

• PWM

:

4ch 8-bit duty, frequency 1Hz to 80kHz

(@ 10MHz)

• Buzzer output

:

1, selectable at 1600Hz, 3200Hz and 6400Hz

(@ 10MHz)

• Serial port

:

Synchronous with auto-transfer function ¥ 1

Synchronous ¥ 2

E2E1021-27-Y3

This version: Jan. 1998

Previous version: Nov. 1996