■ DESCRIPTION

The MB89870 series is a line of single-chip microcontrollers. In addition to a compact instruction set, the microcontrollers contain a variety of peripheral functions such as dual-clock control system, five operating speed control stages, timers, a PWM timer, a serial interface, an A/D converter, an external interrupt, an LCD controller/driver, and a watch prescaler.

■ FEATURES

• F2MC-8L family CPU core

• Dual-clock control system

• Maximum memory space: 64 Kbytes

• Minimum execution time: 0.4 µs/10 MHz

• Interrupt processing time: 3.6 µs/10 MHz

• I/O ports: max. 45 channels

• 21-bit timebase timer

• 8-bit PWM timer: 1 channel, 1 output channel

• 8/16-bit timer/counter: 2 channels (16 bits × 1 channel)

• 8-bit serial I/O: 1 channel

• 10-bit A/D converter: 8 channels

• OP amp: 4 channels

• External interrupt (wake-up function): 8 channels