Oki MSM83C154S, MSM80C154S manual General Description, Features, Cmos 8-bit Microcontroller

¡SemiconductorSemiconductor MSM80C154S/83C154S

MSM80C154S/83C154S

CMOS 8-bit Microcontroller

GENERAL DESCRIPTION

The MSM80C154S/MSM83C154S, designed for the high speed version of the existing MSM80C154/MSM83C154, is a higher performance 8-bit microcontroller providing low-power consumption.

The MSM80C154S/MSM83C154S covers the functions and operating range of the existing MSM80C154/83C154/80C51F/80C31F.

The MSM80C154S is identical to the MSM83C154S except it does not contain the internal program memory (ROM).

FEATURES

• Operating range
Operating frequency	: 0 to 3 MHz (Vcc=2.2 to 6.0 V)
	0 to 12 MHz (Vcc=3.0 to 6.0 V)
	0 to 24 MHz (Vcc=4.5 to 6.0 V)
Operating voltage	: 2.2 to 6.0 V
Operating temperature	: –40 to +85°C (Operation at +125°C conforms to
	the other specification.)

•Fully static circuit

•Upward compatible with the MSM80C51F/80C31F

• On-chip program memory	:	16K words x 8 bits ROM (MSM83C154S only)
• On-chip data memory	:	256 words x 8 bits RAM
• External program memory address space :		64K bytes ROM (Max)
• External data memory address space	:	64K bytes RAM
• I/O ports	:	4 ports x 8 bits
(Port 1, 2, 3, impedance programmable)	:	32
• 16-bit timer/counters	:	3
• Multifunctional serial port	:	I/O Expansion mode
	:	UART mode (featuring error detection)

•6-source 2-priority level Interrupt and multi-level

Interrupt available by programming IP and IE registers

•Memory-mapped special function registers

•Bit addressable data memory and SFRs

• Minimum instruction cycle	: 500 ns @ 24 MHz operation
• Standby functions	: Power-down mode (oscillator stop)
	Activated by software or hardware; providing
	ports with floating or active status
	The software power-down stet mode is termi-
	nated by interrupt signal enabling execution from
	the interrupted address.

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