GENERAL DESCRIPTION

The Winbond mobile keyboard and embedded controller W83L951DG/FG architecture consists of a Turbo-8051 core logic controller and surrounded by various components, 2K+256 bytes of RAM, 64K on-chip FLASH, LPC host interface, 13 general purpose I/O port with 24 external interrupt source, 4 timers, 1 serial port, 2 SMBus interface for master mode, 3 PS/2 port, 2 PWM channels with 8-bits and 2 PWM channels with 16-bits, 2 D-A and 8 A-D converters, 1 Consumer Infrared Communications Receiver, 2 Fan Tachometer , 1 Real Time Clock Generator, and Matrix Interface. The part number with an affix of “G” is the Lead-free package product.

PRODUCT FEATURES

• Core logic

8-bit Turbo 8052 Microprocessor Code based, Speed up to 24MHz

256 bytes Internal RAM

64K bytes Embedded Programmable Flash Memory

2K bytes External SRAM

• Host interface

Software Optional with LPC Interface

Primary Programmable I/O Address Communication Port in LPC Mode

Support SERIRQ in LPC Interface

Support Hardware Fast Gate A20 and KBRST

Support Port 92h

• SMBus

Support 2 SMBus Interface support Master Mode.

• Timers

Support Four Timer Signal with Three Pre-scalars

Timer 1 and 2 Shard the Same Pre-scalar and are Free-Running Only.

Timer X and Y Have Individual Pre-scalar and Support up to Four Control Modes, Free Running,

Pulse Output, Event Counter and Pulse Width Measurement

• PWM

Support Four PWM Channels

PWM 0 and 1 are 8-bits and Programmable Frequency from 62Hz to 7.5 KHz

PWM 2 and 3 are 16-bits and Programmable Frequency from 6Hz to 3MHz

• Fan Tachometer

Support two Fan Tachometer Inputs

• A/D Converter

Firmware Programmable Optional with 10-bite or 8-bit Resolution

Support Eight Channels

• D/A Converter

8-bit Resolution

Support Two Channels

• PS2

Support Three Hardware PS2 Channels

Optional PS2 Clock Inhibit by Hardware or Firmware

• Keyboard Controller

Support 16*8 Keyboard Matrix-scan, Expanding to 18*8 and 20*8

• GPIO

Support 104 Useful GPIO Pins Totally and Bit–addressable to Facility Firmware Coding

• FLASH

Support External On-Board 64K Flash via Matrix Interface (GP0, 1, 3)

• CIR

Support Decoding for the NEC Consumer IR Remote Control Format

• RTC

Real Time Clock Generator with 32.768 KHz Input

• ACPI

Support ACPI Appliance

Secondary Programmable I/O Address Communication Port in LPC Mode

• Package

-Pin QFP and 128-Pin LQFP Leadfree Package Options, in compliance with the RoHS (Restriction on Hazardous Substances)