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)