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■ 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