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■ DESCRIPTION

The MB89170/170A/170L series has been developed as a general-purpose version of the F2MC*-8L family consisting of proprietary 8-bit, single-chip microcontrollers.

In addition to a compact instruction set, the microcontrollers contain a great variety of peripheral functions such as timers, a serial interface, a DTMF generator, and external interrupts, making it suitable for circuit control such as required in telephones.

■ FEATURES

? F2MC-8L family CPU core

? Maximum memory space: 64 Kbytes

? Minimum execution time/interrupt processing time

MB89170 series: 1.1 μs/10 μs (at 3.58 MHz oscillation)

MB89170A/170L series: 0.6 μs/5.4 μs (at 7.16 MHz oscillation)

? Dual-clock control system (MB89170/170A series only)

? I/O ports: max. 37 ports

? 21-bit timebase counter

? Watch prescaler (MB89170/170A series only)

? Watchdog timer

? 8/16-bit timer/counter: 1 channel

? 8-bit serial I/O: 1 channel

? DTMF generator (MB89170/170A series only)

Selectable oscillation frequency (MB89170A series only)

? External interrupt 1: 3 channels

Three channels are independent and capable of using for wake-up from low-power consumption modes (with

an edge detection function).

? External interrupt 2 (wake-up): 8 channels

Eight channels are independent and capable of using for wake-up from low-power consumption modes (with

an “L” level detection function).

? Low-power consumption modes(stop mode, sleep mode, watch mode, and subclock mode)

? CMOS technology