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W742E Datasheet(PDF) 3 Page - Winbond |
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W742E Datasheet(HTML) 3 Page - Winbond |
3 / 60 page W742E/C811 Publication Release Date: December 2000 - 3 - Revision A1 1. GENERAL DESCRIPTION The W742E/C811 (W742C811 is mask type, W742E811 is electrical erasable EPROM type) is a high- performance 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. There are also eleven interrupt sources and 16-level stack buffer. The W742E/C811 operates on very low current and has three power reduction modes, hold mode, stop mode and slow mode, which help to minimize power dissipation. 2. 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 • Memory − 16384(16K) x 16 bit program ROM (including 64K x 4 bit look-up table) − 5120(5K) x 4 bit data RAM (including 16 nibbles x 16 pages working registers) − 40 x 16 LCD data RAM • 40 Input/Output Pins − Port for input only: 3 ports/12 pins − Input/output ports: 3 ports/12 pins − High sink current output port for LED driving: 2 port /8 pins − DC output port: 2 ports/ 8 pins (selected by code option) • Power-down Mode − Hold mode: no operation (main oscillator and sub-oscillator still operate) − Stop mode: no operation (main oscillator and sub-oscillator are stopped) − Slow mode: main oscillator is stopped, system is operated by the sub-oscillator (32.768 KHz) |
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Similar Description - W742E |
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