Features - Fujitsu MB89140 Series Hardware Manual

The MB89140 series of single-chip microcontrollers use the F
sing at low voltages, and features a 25 segment VFD (Vacuum Fluorescent Display) driver. They contain re-
sources such as timers, a serial interface, an A/D converter and an external interrupt input to provide a wide
variety of applications for commercial and industrial equipment, including portable equipment.
The MB89140 series of single-chip microcontrollers has twenty-five V
which makes it suitable for VFD display application such as microwave oven, fan heater, room air conditioner,
dashboard controller, and so on.

1.1 FEATURES

Minimum instruction execution time: 0.5 µs (at oscillation frequency of 8 MHz)
CPU core as commonly used for MB89860 series
– Instruction system best for controller
Operation at low voltage (A/D converter unused)
25 segment VFD (Vacuum Fluorescent Display) driver.
Low current dissipation (applicable to dual-circuit clock)
Internal high-withstand-voltage ports
5 timers
– 8-bit PWM timer (available as reload timer)
– 12-bit MPG timer (available as PPG output, PWM output and reload timer)
– 8/16-bit timer/counter (available as two 8-bit timers)
– 21-bit time-base counter
Single serial interface
– Transfer direction selected for communication with various equipment
A/D converter
– Successive approximation type with 10-bit resolution
2-channel external interrupt input
– Two channels can be selected independently to cancel the low-power consumption modes (selectable
from rising edge, falling edge, or both edges).
– The INT1 can be applied from –0.7 V to 7.0 V (N-channel open drain).
Low-power consumption modes
– Stop mode (The oscillation stops to minimize current consumption.)
– Sleep mode (The CPU stops to cut current consumption to about 30% of normal.)
Reset output or power-on reset available option can be selected.
Packages
– SDIP-64 and QFP-64 packages
GENERAL
2
MC-8L CPU core to enable high-speed proces-
CC
Multiplication and division instructions
16-bit operation
Instruction test and branch instruction
Bit handling instruction, etc.
1-3
-40VP-channel high voltage ports