Telephone

Part No.	W742S82A
Datasheet	W742S82A.pdf
Description	The W742S82A is a high-performance 4-bit microcontroller (μC) that built in 160-dot LCD driver. It is one of series in Nuvoton telephone family that supports CID telephone solution .It is a High-end 4-bit MCU equipped with ROM, RAM, various timers , one channel DTMF generator. It works under wide Voltage Range and Wide Frequency Range (from 400KHz to 3.58MHz). that is suitable for Caller ID, Message phone , Multi-function phone, FRS, RCC, and consumer related applications
Features	Operating Voltage 2.4V – 5.5V Dual-clock Operation, Main Oscillator 3.58 MHz or 400 KHz , Sub-oscillator 32.768 KHz crystal only Memory 16384 (16K) x 16 bits program ROM (including 64K x 4 bit look-up table) 2048(2K) x 4 bits data RAM (including 16 nibbles x 16 pages working registers) 40 x 4 LCD data RAM 24 Input/Output Pins 3 Power-down Mode : Hold mode, Stop mode, Slow mode LCD Driver Output (40 segments x 4 commons), MFP Output is software controlled to generate modulating or non-modulating frequency DTMF Output is one channel Dual Tone Multi-Frequency signal for dialing Two built-in 14-bit frequency dividers Two built-in 8-bit programmable countdown timers
Diagram	N/A
Package	Dice or 100 QFP
Other Files	N/A
Development Tools	WHS-742981A
Others	N/A