Silicon Labs' High-Performance Low-Power
Precision32™ ARM® Cortex™-M3 MCUs

Silicon Labs SiM3C1xx Mixed Signal Core MCUs are the core MCUs in the Precision32™ of ARM® Cortex™-M3 based 32-bit microcontroller 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. 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 data sheet. Combining the world’s best peripherals with the de facto standard 32-bit core makes designing with an MCU easier than ever.

Additional Resources:

SiM3C1xx Datasheet

• 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
• 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)

• Portable medical
• Barcode scanner
• POS peripherals
• Wireless trackers
• USB audio
• Docking station
• Integrated digital TV
• Residential gateway
• White goods
• Motor control
• Home automation/security
• Treadmill
• Sensor controllers
• Optical touch screen
• Instrumentation
• 10G+ optical transceivers
• Power Tools
• Vending Machines
• Factory Automation
• Server Backplanes
• Server Fans
• Industrial monitoring
• Model cars/planes
• HVAC
• Lighting
• E-book Readers

Silicon Labs SiM3L1xx Mixed Signal Ultra Low-Power 32-bit microcontroller (MCU) product line is the latest addition to the Precision32™ family of ARM® Cortex™-M3 microcontrollers. These MCUs are the lowest power 32-bit devices on the market and are well suited for battery-operated and power-sensitive applications. The SiM3L1xx MCUs feature significant peripheral and architectural innovations including an integrated dc-dc converter that helps save power in active mode as well as a redesigned LCD controller that can reduce the power consumed by the LCD display. Autonomous peripherals off-load the CPU and further decrease processing time and power. Full RAM and state retention enables instantaneous code execution after waking up from sleep. Flash memory sizes range from 32 to 256 kB, and the MCUs come in packages as small as 5.5 mm x 5.5 mm.

Additional Resources:

SiM3L1xx Datasheet

• Up to 256 kB flash
• Up to 32 kB RAM
• Up to 62 GPIOs
• 50 MHz Cortex-M3 core
• Integrated dc-dc converter
• Variety of wake sources
• 128 or 160 segment LCD controller
• Sensor interface
• Hardware AES, CRC, encode/decode
• Enhanced DMA with DTM
• 10-bit 1 Msps or 12-bit 250 ksps ADC
• Current mode DAC
• 2 x SPI, UART and I2C
• Analog comparators
• Enhanced PCA, timers
• Voltage reference and temperature sensor
• Available in 40, 64, 80-pin packages

• Alert Pendant
• Cable Set-top Box
• Docking Station
• Electricity Meter
• Electronic Lighting Ballast
• Gas Meter
• GPS
• Heat Cost Allocator
• Heat Meter
• In-home Base Station
• Integrated Digital TV
• Metering Aggregator
• Motion Detector
• Portable and Table Top Radio
• Residential Gateway
• Water Meter

Silicon Labs SiM3U1xx Mixed Signal USB MCUs are a part of the Precision32™ family of ARM® Cortex™-M3 based 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 data sheet. Combining the world’s best peripherals with the de facto standard 32-bit core makes designing with an MCU easier than ever.

Additional Resources:

SiM3U1xxDatasheet

• 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)

• Portable medical
• Barcode scanner
• POS peripherals
• Smart phone
• Wireless trackers
• Cable set-top box
• Terrestrial set-top box
• Laser printer
• USB audio
• Docking station
• White goods
• Motor control
• Home automation/security
• Metering
• Sensor controllers
• Optical touch screen
• Instrumentation
• USB audio
• 10G+ optical transceivers
• Power Tools
• Vending Machines
• Factory Automation
• Server Backplanes
• Server Fans
• Industrial monitoring
• Model cars/planes
• HVAC
• Lighting
• E-book Readers

Silicon Labs SiM3x1xx Development Kits provide support for Silicon Labs’ free Eclipse-based integrated development environment (IDE) which includes a compiler, debugger and an online dashboard for application-critical information such as a software library with example code, data sheets, schematics, PCB footprints, app notes, active version tracking and automatic updates. A centerpiece of the IDE is a GUI-based AppBuilder software, quickly and graphically select their peripheral mix and properties, set up clocking modes, customize pinouts and generate source code – all without having to write a line of code or read a data sheet. Each development kit comes with an MCU card, USB Debug Adapter, and all necessary cables and power supplies needed to evaluate hardware and develop code. The enhanced development kits additionally contain a UDP Motherboard and IO card to enhance the user experience.