Products > Integrated Circuits (ICs) > Embedded Processors & Controllers > SIM3U166-B-GMR
SIM3U166-B-GMR 64-VFQFN Exposed
Silicon Labs
  • SIM3U166-B-GMR
  • SIM3U166-B-GMR 0
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MCU 32Bit SiM3U1xx ARM Cortex M3 RISC 256KB Flash 2.5V/3.3V 64Pin QFN T/R

Manufacturer :
Silicon Laboratories Inc
Package/Case :
64-VFQFN Exposed
Product Categories :
RoHs Status:
Lead free / RoHS Compliant

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SIM3U166-B-GMR Product Details

The Precision32™ family offers a full lineup of footprint compatible ARM®Cortex®-M3 based microcontroller (MCU) devices ranging in Flash size from 32–256 kB with industry-leading benefits in terms of low power, analog capabilities, configurability, rapid development, and integration. The SiM3U1xx family includes USB 2.0 to easily add USB to your embedded designs.

Initializing peripherals and the patented dual-crossbar is a breeze with the Precision32 AppBuilder, a free GUI that enables developers to quickly and graphically initialize peripherals, properties, and pinouts — all without reading the datasheet. Combining the world’s best peripherals with the de facto standard 32-bit core makes designing with an MCU easier than ever.


  • 32-bit ARM Cortex-M3 CPU
  • 80 MHz maximum system clock
  • 32–256 kB Flash and 8–32 kB SRAM
  • External bus interface supports up to 16 MB external memory and parallel LCD interface
  • Ultra low power modes
  • 85 nA sleep mode w/ brown out detector and 4 kB RAM preserved
  • 350 nA sleep mode w/ RTC (internal oscillator)
  • 650 nA sleep mode w/ RTC (external oscillator)
  • 275 µA/MHz at 80 MHz
  • USB 2.0-compliant full speed with 2 kB buffer
  • 48 MHz internal oscillator for crystal-less USB operation
  • Internal oscillator with PLL: 1–80 MHz ±1.5% accuracy; spread-spectrum mode for reduced EMI
  • 2 x 12-bit 250 ksps ADCs (1 MSPS in 10-bit mode)
  • 1.2/1.65/2.4 V internal voltage references
  • 2 x 10-bit digital-to-analog converters
  • Temperature sensor
  • 2 low-power comparators with 6-bit programmable voltage reference
  • 16 capacitive touch inputs
  • 16-channel DMA
  • 2 x USART, 2 x UART, 3 x SPI, 2 x I²C, I²S
  • 2 x 32-bit or 4 x 16-bit timers with capture/compare
  • 2 x 16-bit, 2-ch. counters with capture/compare/PWM
  • 16-bit, 6-channel motor control counter
  • Up to 6 high drive (5–300mA) I/O
  • Up to 65 flexible I/O
  • 128/192/256-bit hardware AES encryption
  • 16/32-bit CRC
  • JTAG, serial-wire, and ETM debugger support
  • Temperature range: –40 to +85 °C
  • 2.7–5.5 V supply voltage (internal regulator enabled)
  • 1.8–3.6 V supply voltage (internal regulator disabled)
  • LGA, QFN and TQFP package options (40/64/80/92-pin)

SIM3U166-B-GMR Block Diagram
(Picture: Diagram)

Technical Parameters

Packaging Tape & Reel (TR) HK STC License NLR
Case/Package 64-VFQFN Exposed Pad

SIM3U166-B-GMR Documents

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Estimated Delivery Time: Dec 07 - Dec 12 days (choose Expedited at checkout).

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Silicon Labs, Inc. is a leading provider of networking, software and system solutions for the Internet of Things, Internet infrastructure, industrial control, consumer electronics and automotive marke...
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