SIM3U154-B-GMR

Microcontrollers Overview

The SIM3U154-B-GMR is an ARM Cortex-M3 microcontroller operating at a maximum frequency of 80 MHz. It features 128 kB of Flash program memory and 32 kB of SRAM data RAM. The device includes two 12-bit ADCs and two 10-bit DACs. It supports USB connectivity alongside GPIO, I2C, I2S, SPI, and UART interfaces. Operating voltage ranges from 1.8 V to 3.6 V, with a functional temperature range of -40 °C to +85 °C. The component is housed in a QFN-40 package.

Microcontrollers Feature Summary

• Integrated USB interface for communication capabilities
• Dual 12-bit analog-to-digital converters for signal processing
• Flexible digital communication peripherals including SPI and I2C
• Low-power operation modes with fast wake-up times

Microcontrollers Applications

• USB-enabled embedded control systems
• Industrial monitoring devices requiring analog input
• Consumer electronics with low power requirements
• General-purpose microcontroller applications

Microcontrollers Procurement Notes

Verify the specific ordering suffix 'GMR' against official Silicon Labs documentation to confirm tape-and-reel packaging status. Confirm that the part remains available for procurement despite its Not Recommended for New Designs (NRND) classification. Ensure compatibility with existing board designs before initiating orders.

Microcontrollers Selection Notes

Select this component when a balance of moderate memory capacity and integrated USB functionality is required. The 80 MHz performance suits applications needing efficient code execution without excessive power consumption. Verify that the QFN-40 package dimensions fit the target PCB layout constraints.

Microcontrollers Part Context

This MCU belongs to the SiM3U1xx family, designed for energy-efficient applications. It utilizes the Precision32 architecture with hardware acceleration for DSP operations. The device integrates multiple power management features to optimize battery life in portable devices while maintaining high performance levels.

Microcontrollers Replacement Considerations

Consult official Silicon Labs documentation for confirmed substitute part numbers within the same family or newer generations. Verify pinout and peripheral compatibility before transitioning to alternative components.