■ DESCRIPTION
The MB89140 series is a line of single-chip microcontrollers that use the F2MC*-8L CPU core which can operate at low voltage but at high speed. The MB89140 series contains a variety of peripheral functions, such as timers, a serial interface, an A/D converter, and an external interrupt. The MB89140 series is applicable to a wide range of applications from welfare products to industrial equipment, including portable devices.

■ FEATURES
• Minimum execution time: 0.5 µs/8-MHz oscillation
• F2MC-8L family CPU core
    Instruction set optimized for controllers
                           Multiplication and division instructions
                           16-bit arithmetic operations
                           Test and branch instructions
                           Bit manipulation instructions, etc.
• Low-voltage operation (when an A/D converter is not used)
• Low current consumption (compatible with dual-clock system)
• High-voltage ports on chip
• Five types of timers
    8-bit PWM timer (also usable as a reload timer)
    12-bit MPG timer (also usable as a PPG output, PWM output, and reload timer)
    8/16-bit timer (also usable as two 8-bit timers)
    21-bit time-base timer
• One serial interface
    Swichable transfer direction allows communication with various equipment.
• 10-bit A/D converter: 12 channels
    Successive approximation type
• External interrupt: 2 channels
    Two channels are independent and capable of wake-up from low-power consumption modes. (Rising edge,
    falling edge/both edges selectability)
    –0.3 V to +7.0 V can be applied to INT1 (N-ch open-drain)
• Low-power consumption modes
    Stop mode (Oscillation stops to minimize the current consumption.)
    Sleep mode (The CPU stops to reduce the current consumption to approx. 1/3 of normal.)
    Subclock mode
    Watch mode
• Reset output and power-on reset selectability