W742E-C811
Description
The W742E/C811 (W742C811 is mask type, W742E811 is electrical erasable EPROM type) is a highperformance 4-bit microcontroller (µC) that built in 640-dot LCD driver. The device contains a 4-bit ALU, two 8-bit timers, two dividers in dual-clock operation, a 40 × 16 LCD driver, ten 4-bit I/O ports (including 2 output port for LED driving), multiple frequency output, and one channel DTMF generator.
Key Features
- Operating Voltage
- 2.4V – 5.5V for mask type
- 2.4V – 4.8V for electrical erasable EPROM type
- Dual-clock Operation
- Main Oscillator
- 3.58 MHz or 400 KHz can be selected by code option
- Crystal or RC oscillator can be selected by code option
- Sub-oscillator
- Connect to 32.768 KHz crystal only
- 16384(16K) x 16 bit program ROM (including 64K x 4 bit look-up table)
