■ 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