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MSM6576

¡ Semiconductor

GENERAL DESCRIPTION

MSM6576 is a 4-bit, low-power microcontroller that is manufactured in a CMOS silicon-gate

process. The microcontroller can be started and operated at a low supply voltage of 0.9 V.

This device contains a crystal oscillator circuit, voltage converter circuits, a time base counter,

a ROM, a RAM, a stack RAM, I/O ports, interrupt function components, a serial I/O port, a

buzzer output circuit, a level detector, and a differential amplifier.

This IC is driven by one battery and is well suited to products that need to be operated under

low power consumption.

FEATURES

• The IC can be initialized and operated even at a low voltage of 0.9 V.

• Low power consumption

• ROM

: 2048 words ¥ 17 bits

• RAM

: 64 words ¥ 4 bits

• I/O port

Input-output port

: 7 ports ¥ 4 bits

Input port

: 1 port ¥ 1 bit

• Interrupt functions (real-time interrupt, external interrupt, and serial interrupt)

• Serial I/O port

: 8-bit sync communication

• Buzzer output circuit

• Level detector

: 7-level detection

• Comparator

• 73 instructions

• Minimum instruction execution time : 61 ms

• Operation under single 1.5 V power supply

• Built-in 32.768 kHz crystal oscillator circuit

• Package options:

44-pin plastic QFP (QFP44-P-910-0.80-K)

(Product name : MSM6576-¥¥GS-K)

44-pin plastic QFP (QFP44-P-910-0.80-2K)

(Product name : MSM6576-¥¥GS-2K)

Chip

¥¥ indicates a code number.

¡ Semiconductor

MSM6576

Operatable at 0.9 V and 7-level Detector 4-Bit Microcontroller

E2E0021-38-94

This version: Sep. 1998

Previous version: Mar. 1996