Sharp SM Series
Developer	Sharp
Manufacturer	Sharp
Type	microcontrollers
Introduction	1974 (announced)
Production	1975
ISA	SM
Word size	4 bit 0.5 octets 1 nibbles
Technology	pMOS, CMOS

The SM (Sharp Microcomputer) was a family of 4-bit microcontrollers introduced by Sharp introduced in 1975.

This series was known for the SM-4 model introduced in 1977, one of the earliest commercial CMOS microcontrollers manufactured and the first commercial Japanese CMOS MCU.

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Members

Part	Tech	ROM	RAM	Description
SM-1	pMOS	882 B	48x4 b
SM-2	pMOS	1 kB	64x4 b
SM-3	pMOS	2 kB	128x4 b
SM-4	CMOS	2 kB	96x4 b	built-in LCD driver, optional external 1K RAM
SM-5	CMOS	1,792 B	65x4	built-in LCD driver
LI3010	CMOS		96x4 b	Evaluation Device (external PROM hookup)

Design

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ISA

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Documents

• LI3010 Evaluator

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