SIM3L146-C-GQR

Microcontrollers Overview

The SiM3L146-C-GQR is a 32-bit microcontroller from the Silicon Labs SiM3L1xx family, featuring an ARM Cortex-M3 CPU operating at up to 50 MHz. It integrates 32 kB of in-system programmable flash and 8 kB of SRAM with configurable low power retention. The device supports a supply voltage range of 1.8 V to 3.8 V and includes a DC-DC buck converter for dynamic voltage scaling. Key peripherals include a 12-bit ADC, LCD controller, hardware AES encryption, and multiple communication interfaces.

Microcontrollers Feature Summary

• Integrates a 50 MHz ARM Cortex-M3 processor with single-cycle multiplication and hardware division support.
• Features a built-in DC-DC buck converter enabling dynamic voltage scaling for optimized energy efficiency.
• Includes specialized low-power architecture achieving typical current consumption of 75 nA in Power Mode 8.
• Provides flexible I/O with up to 62 contiguous 5 V tolerant pins managed by a priority crossbar.

Microcontrollers Applications

• Battery-powered devices requiring ultra-low sleep current
• Applications utilizing LCD displays with auto-contrast control
• Systems requiring hardware-based data security via AES encryption
• Industrial or consumer electronics needing 5 V tolerant GPIO interfaces

Microcontrollers Procurement Notes

Verify component authenticity through authorized Silicon Labs distributors. Confirm package integrity and pin alignment against the TQFP-64 specification. Ensure compliance with RoHS standards and check for specific manufacturing lot codes if traceability is required for your production environment.

Microcontrollers Selection Notes

Select this model when 32 kB of flash memory and 8 kB of RAM are sufficient for application code and data storage. Choose this variant for designs requiring a 64-pin TQFP package. Consider the integrated DC-DC converter if system efficiency is critical, and verify that the 50 MHz processing speed meets real-time control requirements.

Microcontrollers Part Context

This component belongs to the SiM3L1xx Precision32 MCU family, designed for high-performance, low-power applications. The series offers scalable memory options and extensive analog peripherals. Note that the datasheet explicitly marks the SiM3L1xx family as 'Not Recommended for New Designs,' suggesting consideration of newer alternatives for future projects.

Microcontrollers Replacement Considerations

Consult official Silicon Labs documentation for verified substitute part numbers within the same family or next-generation equivalents. Verify pin compatibility and peripheral mapping before transitioning to alternative components to ensure design continuity.

Microcontrollers FAQ

What is the lowest power consumption mode available?

Power Mode 8 provides the lowest power consumption, drawing a typical current of 75 nA with 32 kB of retention RAM.

Does the device support external crystal oscillators?

Yes, the SiM3L146-C-GQR supports an external real-time clock (RTC) crystal oscillator as well as external crystals, RC, C, or CMOS clocks.

How many 5 V tolerant GPIOs are available?

The device provides up to 62 contiguous 5 V tolerant general-purpose input/output pins.