MEC1703Q-B2-TN

Application Specific Microcontrollers Overview

The MEC1703Q-B2-TN is an embedded controller from the MEC170x family, designed for notebook and tablet platforms. It features an ARM Cortex-M4 processor core with a hardware floating-point unit. The device integrates up to 480KB of total SRAM, including a 64KB boot ROM and 2KB of EEPROM. It supports LPC and eSPI host interfaces, providing 148 GPIOs, four SMBus controllers, five PS/2 ports, and two UARTs. Power management includes VBAT and VTR planes, supporting low standby current. The component operates within a voltage range of 1.71V to 3.465V and functions between 0°C and +70°C in a 169-pin WFBGA package.

Application Specific Microcontrollers Feature Summary

• ARM Cortex-M4 processor core with hardware FPU and secure boot capabilities
• Integrated memory: up to 480KB SRAM, 64KB Boot ROM, and 2KB EEPROM
• Host interfaces: Intel LPC (19-33MHz) and eSPI compliant
• Extensive I/O: 148 GPIOs, four SMBus 2.0 controllers, five PS/2 ports, and two UARTs

Application Specific Microcontrollers Applications

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

Application Specific Microcontrollers Procurement Notes

Verify the specific silicon revision and package variant against the datasheet Table 1-1. Confirm that the 169-pin WFBGA form factor matches the target PCB footprint. Ensure the design accommodates the required 1.8V and 3.3V power domains for GPIO and core logic operation.

Application Specific Microcontrollers Selection Notes

Select this model for applications requiring 480KB of total SRAM and 148 GPIOs. The 169-pin package provides more I/O options compared to the 128-pin or 144-pin variants. Verify compatibility with the system's host interface requirements, as the device supports both LPC and eSPI protocols.

Application Specific Microcontrollers Part Context

This part belongs to the MEC170x family of keyboard and embedded controllers. Other members include MEC1701 and MEC1704 variants, which differ primarily in package size (128, 144, or 169 pins) and internal memory configurations. The MEC1703 series specifically offers higher SRAM capacities and EEPROM integration in certain packages.

Application Specific Microcontrollers Replacement Considerations

Direct replacements within the same family include MEC1703Q-C2-TN, which shares the 169-pin WFBGA package and similar feature set but may have different silicon revisions or minor parameter variations. Cross-family substitution requires careful evaluation of pinout compatibility and memory size differences.