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MSM6051

¡ Semiconductor

GENERAL DESCRIPTION

The MSM6051 is a low-power microcontroller manufactured in complementary metal-oxide

semiconductor technology. Integrated into a single chip are ROM, RAM, crystal oscillator,

voltage doubler, timer, melody circuit, LCD driver, input port, and output port.

Using the on-chip ROM for application code reduces power consumption.

The MSM6051 is widely used in electronic products requiring low-power operation, such as

stopwatches with lap time memory, calculator watches, and handy terminals.

FEATURES

• Low power consumption

• Internal ROM

: 2560 ¥ 14 bits

• Internal RAM

: 120 ¥ 4 bits

• Input port

: 2 ports ¥ 4 bits, 1 port ¥ 1 bit

• Output port

: 1 port ¥ 4 bits

• 66 LCD drivers (including 3 commons) (1/3 duty, 1/3 bias, 189 segments)

• 59 instructions

• Minimum instruction execution time : 91.5 ms (Display instruction cycle : 183 ms)

• 1.5 V operating voltage (Can be changed to the lithium battery version by mask option)

• Melody function

: Up to 512 notes can be played automatically (with an

envelope)

• Lamp drivers

• Crystal oscillator

: 32.768 kHz

• Chip (102 pads)

¡ Semiconductor

MSM6051

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

E2E0009-38-94

This version: Sep. 1998

Previous version: Mar. 1996