MEC1310

MEC1310 Keyboard and Embedded Controller for Notebook PC Product 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 - Supports LPC Bus frequencies of 19.2MHz to 33MHz - 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 in MEC1310 - 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 interface. - One Chip Select Pins - Fully 8051 Controlled - Hardware Support for two SPI Flash Configurations: – Switched SPI Flash Configuration – Parallel Shared SPI Flash Configuration – Debug Programming Interface Two 16-Bit Timer/Counters Integrated Full-Duplex Serial Port Interface Seventy-Three 8051 Interrupt Sources Thirty-Two 8-Bit, Host/8051 Mailbox Registers - Sixty-Four Maskable Hardware Wake-Up Events - Fast GATEA20 - Fast CPU_RESET - Multiple Clock Sources and Operating Frequencies - IDLE and SLEEP Modes - Trace FIFO Debug Port Accurate Fail-Safe Ring Oscillator - Single Clock source for most 8051 and SIO functions - Provides 2% frequency accuracy - Lock Bit provides status - 32.768KHz-input clock – Single ended input – Compatible with south bridge SUSCLK/ RSMRST# gating rule...