■ 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.
*: F2MC stands for FUJITSU Flexible Microcontroller.

■ 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