MEC1428-I/NU-C1

Application Specific Microcontrollers Overview

The MEC1428-I/NU-C1 is a low-power embedded controller from the MEC14XX family, designed for computing platforms transitioning to eSPI. It features a MIPS32 M14K core with 192 KB SRAM and supports eSPI, LPC, I²C, PECI, and PS/2 interfaces. The device offers flexible 1.8V and 3.3V I/O support, secure boot ROM with CRC 32 and AES 128, and includes peripherals such as 108 GPIOs, 8 PWMs, 4 TACHs, 2 DACs, 8 ADCs, and 3 SPI interfaces. Operating temperature ranges from -40°C to 85°C.

Application Specific Microcontrollers Feature Summary

• MIPS32 M14K microcontroller core with 192 KB SRAM
• Supports eSPI, LPC, I²C, PECI, and PS/2 host interfaces
• Flexible 1.8V and 3.3V I/O voltage support
• Secure Boot ROM with CRC 32 and AES 128 encryption

Application Specific Microcontrollers Applications

• Notebook computers
• Tablets
• Single Board Computers (SBCs)
• Industrial controllers

Application Specific Microcontrollers Procurement Notes

Verify the specific suffix '-I/NU-C1' against the official datasheet to confirm package type and temperature range. The base MEC1428 device is available in 128-WFBGA, 128-VTQFP, and 144-WFBGA packages. Ensure the ordering code matches the required thermal and physical specifications for the target design.

Application Specific Microcontrollers Selection Notes

Select the MEC1428 over the MEC1418 if additional SMBus/I2C ports or TACH inputs are required. The MEC1428 provides 7 SMBus ports and 4 TACHs compared to the MEC1418's 6 SMBus ports and 2 TACHs. Both devices share pin compatibility for easy migration between LPC and eSPI designs.

Application Specific Microcontrollers Part Context

The MEC1428 is part of the MEC14XX family, which includes the MEC1408 and MEC1418. These devices are designed to facilitate the transition from legacy LPC-based systems to modern eSPI architectures while maintaining backward compatibility. The family is optimized for mobile and industrial computing applications requiring low power consumption.

Application Specific Microcontrollers Replacement Considerations

The MEC1418 is a pin-compatible alternative within the same family. However, it has fewer SMBus ports (6 vs 7) and TACH inputs (2 vs 4). Verify peripheral requirements before substituting.