MCHPMEC1322-LZY-C0
Overview
The MEC1322-LZY-C0 is a highly integrated ARM Cortex-M4F embedded controller designed specifically for mobile computing and laptop keyboard control. It features a 48MHz core with floating-point support, 128KB of SRAM, and 32KB of boot Flash, coupled with specialized PC-centric interfaces like LPC and PECI. This controller manages system-level tasks including keyboard scanning, power sequencing, and thermal monitoring while operating on a 3.3V supply.
Why Choose This Part
It offers a power-efficient ARM Cortex-M4 core that consumes only 9.75mA at full 48MHz operation, with deep sleep modes as low as 1.25uA. The inclusion of hardware bit-banding and a dedicated FPU allows for efficient handling of complex system management tasks without a large power footprint. The high I/O count in a 132-pin DQFN package makes it ideal for space-constrained motherboard designs needing extensive connectivity.
Applications
Key Specifications
Getting Started
Development typically requires an ARM-compatible debugger such as a J-Link via the JTAG or SWD headers. Engineers should utilize Microchip's MEC1322 evaluation tools and the dedicated LPC/SPI initialization sequences to interface with host processors. Firmware is generally developed in C using standard ARM toolchains such as Keil MDK or IAR Embedded Workbench.
