MEC1703Q-B2-I/TN

Application Specific Microcontrollers Overview

The MEC1703Q-B2-I/TN is an ARM Cortex-M4 based embedded controller from Microchip Technology, designed for notebook and tablet platforms. It features a 32-bit processor core with hardware floating-point support and up to 480KB of total SRAM. The device integrates extensive I/O capabilities including LPC and eSPI host interfaces, PS/2 ports, SMBus controllers, and GPIOs. It supports low-power standby modes via VBAT and VTR power planes, includes cryptographic engines for secure boot, and operates within a temperature range of -40°C to +85°C.

Application Specific Microcontrollers Feature Summary

• ARM Cortex-M4F core with hardware FPU and up to 480KB SRAM
• Supports LPC and eSPI host interfaces for system communication
• Integrated cryptographic engines (AES, SHA, RSA/ECC) and secure boot loader
• Extensive peripheral set including 148 GPIOs, PS/2, UART, ADC, and PWM

Application Specific Microcontrollers Applications

• Notebook PC embedded controllers
• Tablet platform I/O management
• Keyboard and trackpad interface control

Application Specific Microcontrollers Procurement Notes

Verify the specific suffix 'I' indicates industrial temperature range (-40°C to +85°C) compared to commercial variants. Confirm package type 'TN' corresponds to the 169-pin WFBGA. Check current datasheet revisions for any errata or pinout updates before finalizing design integration.

Application Specific Microcontrollers Selection Notes

Select this model when high I/O count (148 GPIOs) and dual host interface support (LPC/eSPI) are required. Ensure the 480KB SRAM configuration meets firmware size requirements. Verify that the 169-pin WFBGA package fits the PCB footprint constraints and thermal design specifications for the target application.

Application Specific Microcontrollers Part Context

This part belongs to the MEC170x family of keyboard and embedded controllers. It shares the same core architecture and feature set as other MEC1703 variants but differs in package type (169-WFBGA vs 144-WFBGA) and potentially memory configuration. It is designed to replace older legacy EC designs with modern ARM-based processing and enhanced security features.

Application Specific Microcontrollers Replacement Considerations

Direct replacements within the MEC170x family include MEC1703Q-C2-TN or MEC1703Q-B2-TN, depending on the required temperature grade and exact SRAM configuration. Verify pin compatibility and software compatibility when substituting between different suffixes in the same package.