SiM3U1xx USB MCUs

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.

SiM3U1xx Common Specs

  • 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)
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Part Number MHz Flash RAM Dig I/O Pins 5 Volt Tolerant ADC 1 DAC USB Cap Sense LCD Temp Sensor Timers (16-bit) AES-256 ECC SHA-1 SHA-2 RSA-2048 UART USART SPI I2C I2S EMIF RTC Comparators Vdd (min) Vdd (max) Package Type Package Size (mm) Internal Osc. Debug Interface
80 32 8 28 12-bit, 7-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 QFN40 6x6 ±1.5% JTAG; SW
80 32 8 50 12-bit, 13-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 QFN64 9x9 ±1.5% ETM; JTAG; SW
80 32 8 50 12-bit, 13-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 TQFP64 10x10 ±1.5% ETM; JTAG; SW
80 64 16 28 12-bit, 7-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 QFN40 6x6 ±1.5% JTAG; SW
80 64 16 50 12-bit, 13-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 QFN64 9x9 ±1.5% ETM; JTAG; SW
80 64 16 50 12-bit, 13-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 TQFP64 10x10 ±1.5% ETM; JTAG; SW
80 128 32 28 12-bit, 7-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 QFN40 6x6 ±1.5% JTAG; SW
80 128 32 50 12-bit, 13-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 QFN64 9x9 ±1.5% ETM; JTAG; SW
80 128 32 50 12-bit, 13-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 TQFP64 10x10 ±1.5% ETM; JTAG; SW
80 128 32 65 12-bit, 16-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 LGA92 7x7 ±1.5% ETM; JTAG; SW
80 128 32 65 12-bit, 16-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 TQFP80 12x12 ±1.5% ETM; JTAG; SW
80 256 32 28 12-bit, 7-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 QFN40 6x6 ±1.5% JTAG; SW
80 256 32 50 12-bit, 13-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 QFN64 9x9 ±1.5% ETM; JTAG; SW
80 256 32 50 12-bit, 13-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 TQFP64 10x10 ±1.5% ETM; JTAG; SW
80 256 32 65 12-bit, 16-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 LGA92 7x7 ±1.5% ETM; JTAG; SW
80 256 32 65 12-bit, 16-ch., 250 ksps 10-bit, 2-ch. 1 2 2 3 2 1 1 2 1.8 5.5 TQFP80 12x12 ±1.5% ETM; JTAG; SW

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