■ OUTLINE
The MB89680 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, four operating speed control stages, timers, PWM timer, a serial interface, a UART, an A/D converter, and an external interrupt.

■ FEATURES
• F2MC-8L family CPU core
• Dual-clock control system
• Maximum memory space: 64 Kbytes
• Minimum execution time: 0.5 µs/8 MHz
• Interrupt processing time: 4.5 µs/8 MHz
• I/O ports: max. 85 channels
• 21-bit timebase counter
• 8-bit PWM timer
• 8/16-bit timer
• UART
• Serial I/O with 1-byte buffer
• 8-bit A/D converter
• Pulse width counter
• Modem signal output
• External interrupts: 16 channels
• Power-on reset function
• Low-power consumption modes (subclock mode, watch mode, sleep mode, and stop mode)
• CMOS technology