4-Bit Single Chip Micro Mini MCU with small DIE size. All items come with a built-in LCD Segment Driver. This Family is ideal for Caller ID, Message phones, and Multi-function phones.

	Part No. Working Voltage ROM Size RAM Size Working Frequency System Clock IO LCD Otders Package W742E81A 2.4-5.5v 16k*16 2k*4 H:400K ~ 3.58M L:32768 Single / Dual Crystal/RC 24 4*40 MFP,DTMF 100 QFP W742S82A 2.4-5.5v 16k*16 2k*4 H:400K ~ 3.58M L:32768 Single / Dual Crystal/RC 24 4*40 MFP,DTMF 100 QFP