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■ DESCRIPTION

MB89820 series is a line of single-chip microcontrollers using the F2MC-8L* CPU core which can operate at low voltage but at high speed. In addition to an LCD controller/driver allowing 200-pixel display the microcontrollers contain a variety of peripheral functions such as timers, a UART, a serial interface, and an external interrupt. The configuration of the MB89820 series is therefore best suited to control of LCD display panels.

■ FEATURES

? Minimum execution time : 0.8 μs/5 MHz (VCC = +5.0 V)

? 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.

? LCD controller/driver

Max 50 segments × 4 commons

Divided resistor for LCD power supply

? Three types of timers

8-bit PWM timer (also usable as a reload timer)

8-bit pulse width count timer (also usable as a reload timer)

20-bit time-base timer

? Two serial interfaces

8-bit synchronous serial interface (Switchable transfer direction allows communication with various equipment.)

UART (5-, 7-, 8-bit transfer capable)

? External interrupt : 2 channels

Capable of wake-up from low-power consumption modes (with an edge detection function)

? 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.)