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MEC1703Q-B2-TN

MCHPMEC1703Q-B2-TN

Microchip Technology
ARM® Cortex®-M4 - Keyboard and Embedded Controller Microcontroller IC 169-WFBGA
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Overview

The MEC1703Q-B2-TN is a specialized ARM Cortex-M4F based embedded controller designed for keyboard control and system management in computing and industrial platforms. It functions as a highly integrated I/O controller, featuring a Hardware Root of Trust for secure boot and extensive legacy interface support including LPC and eSPI.

Why Choose This Part

The controller provides a massive 480KB SRAM for complex firmware tasks and features a dedicated 2KB EEPROM for non-volatile parameter storage. Its ARM Cortex-M4F core includes a floating-point unit and DSP instructions, offering significantly more processing power than traditional 8051-based embedded controllers.

Applications

Notebook and Laptop EC
Serves as the primary embedded controller for power sequencing, thermal management, and keyboard matrix scanning.
Secure Boot Management
Utilizes the Hardware Root of Trust and Boot ROM Secure Boot Loader to ensure firmware integrity in sensitive computing environments.
Industrial System Controller
Integrates multiple communication interfaces like I2C, SPI, and UART to bridge legacy LPC peripherals to modern eSPI hosts.

Key Specifications

RAM Size 480K x 8
Interface ACPI, EBI/EMI, eSPI, I2C, LPC, PECI, PS/2, QSPI, SPI
Applications Keyboard and Embedded Controller
Mounting Type Surface Mount
Number of I/O 148
Core Processor ARM Cortex-M4
Package / Case 169-WFBGA
Voltage - Supply 1.71V ~ 1.89V, 3.135V ~ 3.465V
Controller Series MEC170x
Operating Temperature 0degC ~ 70degC
Supplier Device Package 169-WFBGA (11x11)

Getting Started

Development typically involves the Microchip MEC170x evaluation board and the MPLAB X IDE environment. Engineers should leverage the provided Boot ROM secure boot tools and eSPI verification firmware to implement system-level security features.