MEC1310
Keyboard and Embedded Controller for Notebook PC
- Two 16-Bit Timer/Counters
Product Features
- Integrated Full-Duplex Serial Port Interface
- Seventy-Three 8051 Interrupt Sources
• 3.3V Operation with 5V Tolerant Buffers on PS/2
pins
- Thirty-Two 8-Bit, Host/8051 Mailbox Regis-
ters
• ACPI 1.0/2.0 PC99/PC2001 Compliant
• LPC Interface with Clock Run Support
- Sixty-Four Maskable Hardware Wake-Up
Events
- Supports LPC Bus frequencies of 19.2MHz to
33MHz
- Fast GATEA20
- Serial IRQ Interface Compatible with Serial-
ized IRQ Support for PCI Systems
- Fast CPU_RESET
- Multiple Clock Sources and Operating Fre-
quencies
- 15 Direct IRQs
- ACPI SCI Interface
- IDLE and SLEEP Modes
- Trace FIFO Debug Port
- nSMI output and supporting PM registers
- Shadowed write only registers
• Internal 64K SRAM in MEC1310
• Accurate Fail-Safe Ring Oscillator
- Single Clock source for most 8051 and SIO
functions
- Loaded at VCC1 power from the HOST/8051
SPI Memory Interface
- Provides 2% frequency accuracy
- Lock Bit provides status
- Provides 64KB of 8051 program space
- 32k-Byte region shared with 8051data space
• HOST/8051 SPI Memory Interface
- 32.768KHz-input clock
–
–
Single ended input
Compatible with south bridge SUSCLK/
RSMRST# gating rules
- 3-pin Full Duplex serial communication inter-
face.
–
–
replacement 32K distribution available when
RSMRST# is asserted
Very low power state with only external 32K clock
distributed
- One Chip Select Pins
- Fully 8051 Controlled
- Hardware Support for two SPI Flash Configu-
rations:
• Integrated Standby Power Reset Generator
- VCC1_RST# open drain output
- Accepts External driven Reset
• VCC0 Backed Resources
–
–
–
Switched SPI Flash Configuration
Parallel Shared SPI Flash Configuration
Debug Programming Interface
• Two Power Planes
- 64 Byte VCC0 Backed Registers
- VCC0 Backed Status Register
• Three 8584-Style I2C/SMBus Controllers
- 8051 Controlled Logic Allows I2C/SMBus
Master or Slave Operation
- I2C/SMBus Controllers are Fully Operational
on Standby Power
- Low Standby Current in Sleep Mode
• Three 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
- Two Controllers with 2 Sets of Dedicated Pins
per I2C/SMBus Controller
- One Controller with one Set of Dedicated
Pins per I2C/SMBus Controller
- Supports Interrupt and Polling Access
- 1024 Boot /ROM
• Four independent Hardware Driven PS/2 Ports
- 256 Bytes Data RAM
- GPIO signal function associated with each
pin
- On-Chip Memory-Mapped Control Registers
- Access to VCC0 Backed Registers
- Up to 18x8 Keyboard Scan Matrix
• PECI Interface 2.0
2014 Microchip Technology Inc.
DS00001768A-page 1