M34556M4-XXXFP Overview
The 4556 Group is a 4-bit single-chip microputer designed with CMOS technology. Its CPU is that of the 4500 series using a simple, high-speed instruction set. The puter is equipped with two 8-bit timers (each timer has one or two reload registers), a 16bit timer for clock count, interrupts, and oscillation circuit switch function.
M34556M4-XXXFP Key Features
- 0.5 µs (at 6 MHz oscillation frequency, in high-speed through-mode) One Time PROM version
- 0.68 µs (at 4.4 MHz oscillation frequency, in high-speed through-mode)
- 1.8 to 5.5 V One Time PROM version
- 1.8 to 3.6 V (It depends on operation source clock, oscillation frequency and operation mode)
- 8-bit timer with a reload register Timer 2
- 8-bit timer with two reload registers Timer 3
- 16-bit timer (fixed dividing frequency)
- 4 sources qKey-on wakeup function pins
- 9 q LCD control circuit
- 23 mon output