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MSM80C31F

OKI electronic
Part Number MSM80C31F
Manufacturer OKI electronic
Published Apr 12, 2007
Description (MSM80C31F / MSM80C51F) CMOS 8-Bit Microcontroller
Detailed Description E2E1037-19-41 ¡ Semiconductor MSM80C31F/MSM80C51F ¡ Semiconducto
Datasheet PDF File MSM80C31F PDF File

MSM80C31F
MSM80C31F


Overview
E2E1037-19-41 ¡ Semiconductor MSM80C31F/MSM80C51F ¡ Semiconductor CMOS 8-Bit Microcontroller This version: Mar.
1995 MSM80C31F/80C51F GENERAL DESCRIPTION The OKI MSM80C31F/MSM80C51F microcontroller is a low-power, 8-bit device implemented in OKI's silicon-gate complementary metal-oxide semiconductor process technology.
The device includes 4K bytes of mask programmable ROM (MSM80C51F only), 128 bytes of data RAM, 32 I/O lines, two 16-bit timer/counters, a five-source two-level interrupt structure, a full duplex serial port, and an oscillator and clock circuitry.
In addition, the device has two software selectable modes for further power reduction — Idle and Power Down.
Idle mode freezes the CPU's in-struction execution while maintaining RAM and allowing the timers, serial port and interrupt system to continue functions.
Power Down mode saves the RAM contents but freezes the oscillator causing all other device functions to be inoperative.
FEATURES • Low power consumption by 2 mm silicon gate CMOS process technology • Fully static circuit • Internal program memory : 4K bytes (MSM80C51F) www.
DataSheet4U.
com • External program memory space : 64K bytes • Internal data memory (RAM) : 128 bytes • External data memory (RAM) space : 64K bytes • I/O ports : 8-bit ¥ 4 ports • Two 16-bit timer/counters • Multifunctional serial port (UART) • Five interrupt sources (Priority can be set) • Four sets of working registers (R0-7 ¥ 4) • Stack : Internal data memory (RAM) 128-byte area can be used arbitrarily (by SP specified) • Two CPU power-down modes (1) Idle mode : CPU stopped while oscillation continued.
(Software setting) (2) PD mode : CPU and oscillation all stopped.
(Software setting) (Setting I/O ports to floating status possible) • Operating temperature : –40 to +85°C (@ 12 MHz, VCC = 5 V ± 20%) –20 to +70°C (@ 16 MHz, VCC = 5 V ± 5%) • 2-byte 1-machine cycle instructions : 1 msec.
@ 12 MHz 0.
75 msec.
@ 16 MHz • Multiplication/division instructions : 4 msec.
@ 12 MHz 3 mse...


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