MEC1310-NU-TR

Application Specific Microcontrollers Overview

The MEC1310-NU-TR is a notebook I/O controller manufactured by Microchip Technology, housed in a 128-pin VTQFP package. It operates on a 3.3V supply with 5V tolerant buffers on PS/2 pins and supports an LPC interface with clock run capabilities at frequencies between 19.2MHz and 33MHz. The device integrates a high-performance embedded 8051 keyboard and system controller featuring 64KB of executable SRAM, 1KB of Boot ROM, and 256 bytes of direct RAM. It provides comprehensive power management compliant with ACPI 2.0 standards.

Application Specific Microcontrollers Feature Summary

• Embedded 8051 Controller: Includes 64KB SRAM, 1KB Boot ROM, and 256 bytes data RAM for system control.
• LPC Interface: Supports bus frequencies from 19.2MHz to 33MHz with Serial IRQ compatibility.
• Peripheral Integration: Features four PS/2 ports, three I2C/SMBus controllers, dual fan tachometers, and a 5-channel 10-bit ADC.
• Power Management: Compliant with ACPI 2.0/PC99/PC2001, supporting multiple low-power down modes and wake-up events.

Application Specific Microcontrollers Applications

• Notebook PC Embedded Controllers
• System Power Management Units
• Keyboard and System Control Interfaces

Application Specific Microcontrollers Procurement Notes

Verify the -TR suffix indicates tape and reel packaging with a reel size of 4,000 units. Confirm the temperature range corresponds to the blank suffix (0°C to +85°C). Ensure the NU designation matches the required 128-pin VTQFP package. Check for any specific silicon revision errata sheets relevant to the production batch.

Application Specific Microcontrollers Selection Notes

Select this component for designs requiring an LPC-based embedded controller with integrated 8051 processing. Verify that the 128-pin VTQFP footprint fits the PCB layout constraints. Ensure the application utilizes the 3.3V operating voltage and requires the specified peripheral count, including four PS/2 ports and three I2C controllers.

Application Specific Microcontrollers Part Context

This part belongs to the MEC1310 family of keyboard and embedded controllers designed specifically for notebook PCs. It serves as a central I/O hub managing system resources, power states, and peripheral interfaces such as PS/2, LPC, and SMBus within the laptop architecture.

Application Specific Microcontrollers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Microchip technical support or authorized distributors for current equivalent components if the MEC1310 series is discontinued or unavailable.

Application Specific Microcontrollers FAQ

What is the capacity of the internal SRAM?

The MEC1310 contains 64KB of internal SRAM, which is loaded at VCC1 power and provides 64KB of 8051 program space with a 32KB region shared with 8051 data space.

Does the device support Serial IRQ?

Yes, the LPC interface includes a Serial IRQ Interface compatible with Serialized IRQ Support for PCI Systems, along with 15 direct IRQs.

What is the operating temperature range?

The standard MEC1310-NU variant operates within an extended commercial temperature range of 0°C to +85°C.