LPC47N350

Features:

3.3V Operation with 5V Tolerant Buffers
ACPI 2.0 PC2001 Compliant
LPC Interface with Clock Run Support
    - Decode I/O, Memory, and FWH cycles
    - Serial IRQ Interface Compatible with Serialized IRQ Support for PCI Systems
    - 15 Direct IRQs
    - ACPI SCI Interface
    - nSMI output and supporting PM registers
    - Shadowed write only registers
LPC Switching
    - Hot Plug LPC Docking Interface
    - Secondary Switchable LPC interface (3.3V only)
Internal 64K Flash ROM
    - Programmed From Direct Parallel Interface, 8051, or LPC Host
    - 2k-Byte Lockable Boot Block
    - Can be Programed Without 8051 Intervention
Three Power Planes
    - Low Standby Current in Sleep Mode
ACPI Embedded Controller Interface
Configuration Register Set Compatible with ISA Plug-and-Play Standard (Version 1.0a)
High-Performance Embedded 8051 Keyboard and System Controller
    - Provides System Power Management
    - System Watch Dog Timer (WDT)
    - 8042 Style Host Interface
    - Supports Interrupt and Polling Access
    - 512 Bytes Executable RAM
    - 512 Bytes Data RAM
    - On-Chip Memory-Mapped Control Registers
    - Access to RTC and CMOS Registers
    - Up to 16x8 Keyboard Scan Matrix
    - Two-16 Bit Timer/Counters
    - Integrated Full-Duplex Serial Port Interface
    - Eleven 8051 Interrupt Sources
    - Thirty-Two 8-Bit, Host/8051 Mailbox Registers
    - Thirty-Two Maskable Hardware Wake-Up Events
    - Fast GATEA20
    - Fast CPU_RESET
    - Multiple Clock Sources and Operating Frequencies
    - IDLE and SLEEP Modes
    - Fail-Safe Ring Oscillator
Real-Time Clock
    - MC146818 and DS1287 Compatible
    - 256 Bytes of Battery Backed CMOS in Two 128-Byte Banks
    - 128 Bytes of CMOS RAM Lockable in 4x32-Byte Blocks
    - 12- and 24-Hour Time Format
    - Binary and BCD Format
    -<2A Standby Current (typ)
Two 8584-Style I² C/SMBus Controllers
    - 8051 Controlled Logic Allows I²C/SMBus Master or Slave Operation
    -I²C/SMBus Controllers are Fully Operational on Standby Power
    - 2 Sets of Dedicated Pins per I²C/SMBus Controller
Serial Peripheral Interface (SPI)
Four independent Hardware Driven PS/2 Ports
41 General Purpose I/O Pins
    - 25 Maskable Hardware Wake-Event Capable
    - 6 Programmable Open-Drain/Push-Pull Outputs
Four Programmable Pulse-Width Modulator Outputs
    - Independent Clock Rates
    - 6-Bit Duty Cycle Granularity
    - Operational in both Full on and Standby modes
Dual Fan Tachometer Inputs
Debug Port (UART)
    - High-Speed 16550A-Compatible UART with 16-Byte Send/Receive FIFOs
    - Programmable Baud Rate Generator
    - Relocatable to 480 Different Base I/O Addresses
    - 15 IRQ Options
XNOR-Chain Test Mode
128-Pin QFP and VTQFP Package


Description

The LPC47N350 is a highly integrated LPC-based ACPI 2.0 and PC2001 compliant Keyboard, System,and Power Management Controller for Notebook PC Applications. See Figure 1.1.

The LPC47N350 incorporates a high-performance 8051-based keyboard and system controller with internal 64k byte Flash ROM; a hot-plug Docking LPC port; a Serial Peripheral Interface (SPI), four PS/2 ports; a real-time clock; a 16C550A-compatible 2 pin UART for Debug Port; two 8584-style ²I C/SMBus controllers with two selectable ports per controller; a Serial IRQ peripheral agent interface; an ACPI Embedded Controller Interface; forty-one General Purpose I/O pins; four independently programmable pulse width modulators; dual fan control through the implementation of two fan tachometer input pins;and maskable hardware wake-up events.

The LPC47N350 has three separate power planes to provide "instant on" and system power management functions.  Additionally, the LPC47N350 incorporates sophisticated power control circuitry (PCC).  The PCC supports multiple low power down modes.  Wake-up events and ACPI-related functions are supported through the SCI Interface.

The LPC47N350 supports the ISA Plug-and-Play Standard (Version 1.0a) and provides the recommended functionality to support Windows 2000 and Windows Me. The I/O Address and Hardware IRQ of each logical device in the LPC47N350 may be reprogrammed through the internal configuration registers. There are 480 I/O address location options and 15 IRQ's for each logical device.