MEC1308

MEC1308 Keyboard and Embedded Controller for Notebook PC Features 3.3V Operation with 5V Tolerant Buffers on PS/2 pins ACPI 1.0/2.0 PC99/PC2001 Compliant LPC Interface with Clock Run Support - 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 Internal 64K SRAM - Loaded at VCC1 power from the HOST/8051 SPI Memory Interface - Provides 64KB of 8051 program space - 32k-Byte region shared with 8051data space HOST/8051 SPI Memory Interface - 3-pin Full Duplex serial communication inter- face. - Two Chip Select Pins - Fully 8051 Controlled - Hardware Support for two SPI Flash Configu- rations: - Switched SPI Flash Configuration - Parallel Shared SPI Flash Configuration Two 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 - 1024 Boot /ROM - 256 Bytes Data RAM - On-Chip Memory-Mapped Control Registers - Access to VCC0 Backed Registers - Up to 18x8 Keyboard Scan Matrix - Two 16-Bit Timer/Counters - Integrated Full-Duplex Serial Port Interface - Seventy-Three 8051 Interrupt Sources  2014 Microchip Technology Inc. - Thirt...