The MEC1322 incorporates a high-performance 32-bit embedded microcontroller with 128 Kilobytes of SRAM and 32 Kilobytes of Boot ROM which communicates with the system host using the Intel® Low Pin Count (LPC) bus. The product has two Serial Peripheral Interface (SPI) memory interfaces that allow the Embedded Controller (EC) to read its code from external SPI flash memory: private SPI and/or shared SPI. The Shared SPI interface allows for Embedded Controller code to be stored in a shared SPI chip along with the system BIOS. It provides support for loading EC code from the private or shared SPI flash device on a VCC1 power-on. The MEC1322 is directly powered by two separates suspend supply planes (VBAT and VCC1) and senses the runtime power plane (VCC) to provide “Instant On” and system power management functions. Family parts MEC1322I-NU-C0 MEC1322-LZY MEC1322-LZY-C0 MEC1322-LZY-C0-TR MEC1322-NU MEC1322-NU-C0 MEC1322-SZ-C0 MEC1322-SZ-C0-TR