Silicon Lab公司的SiM3U1xx系列产品是具有高达256KB闪存的高性能低功耗 32位Precision32™USBMCU,采用32位ARM Cortex-M3 CPU,是全集成电混合信号系统级芯片(SoC)MCU,具有加电复位,电压监视,看门狗定时器和时钟振荡器,可单独使用的系统级芯片.器件工作频率80MHz,支持单周期乘法,硬件除法,适用于通信接口.本文介绍了SiM3U1xx系列主要特性,方框图,以及SiM3U1xx (USB)增强开发套件特性,电路图和材料清单.

The SiM3U1xx Precision32™ devices are fully integrated, mixed-signal system-on-a-chip MCUs. With on-chip power-on reset, voltage supply monitor, watchdog timer, and clock oscillator, the SiM3U1xx devices are truly standalone system-on-a-chip solutions. The Flash memory is reprogrammable in-circuit, providing non-volatile data storage and allowing field upgrades of the firmware. User firmware has complete control of all peripherals and may individually shut down and gate the clocks of any or all peripherals for power savings. The on-chip debugging interface (SWJ-DP) allows non-intrusive (uses no on-chip resources), full speed, in-circuit debugging using the production MCU installed in the final application. This debug logic supports inspection and modification of memory and registers, setting breakpoints, single stepping, and run and halt commands. All analog and digital peripherals are fully functional while debugging. Each device is specified for 1.8 to 3.6 V operation over the industrial temperature range (–40 to +85 °C). The Port I/O and RESET pins are powered from the IO supply voltage. The SiM3U1xx devices are available in 40-pin or 64- pin QFN, 64-pin or 80-pin TQFP, or 92-pin LGA packages. All package options are lead-free and RoHS compliant.

SiM3U1xx系列主要特性:

32-bit ARM?Cortex?M3 CPU

-80 MHz maximum frequency

-Single-cycle multiplication, hardware division support

-Nested vectored interrupt control (NVIC) with 16 levels of interrupt priority

Memory

-32?56 kB Flash, in-system programmable

-8?2 kB SRAM (including 4 kB retention SRAM)

-External bus interface supports up to 16 MB of external memory and a parallel LCD interface with QVGA resolution

Power Management

-Low drop-out (LDO) regulator

-Power-on reset circuit and brownout detectors

-5-to-3.3 V voltage regulator supports up to 150 mA to drive the device directly from USB; no off-chip regulator required

-Programmable external regulator supports up to 3.6 V, 1000 mA

-Multiple power modes supported for low power optimization Clock Sources

-Internal oscillator with PLL: Fine frequency resolution up to 80 MHz; spread-spectrum mode for reduced EMI

-USB internal 48 MHz oscillator supports crystal-less operation

-Low power internal oscillator: 20 MHz and 2.5 MHz modes

-Low frequency internal oscillator: 16.4 kHz

-External oscillators: Crystal, RC, C, CMOS and RTC Crystal

-Flexible clock divider: Reduce frequency by up to 128x from any clock source 128/192/256-bit Hardware AES Encryption

-Hardware-supported Electronic Codebook (ECB), Cipher-Block Chaining (CBC) and Counter (CTR) algorithms

-All cipher operations can be performed without any firmware intervention for a set of 4-word blocks (up to 32 kB) 16/32-bit CRC

-Hardware support for common 32-bit and 16-bit polynomials Timers/Counters

-2 x 32-bit or 4 x 16-bit timers with capture/compare

-2 x 16-bit, 2-channel counters with capture/compare/PWM

-16-bit, 6-channel counter with capture/compare/PWM and dead-time controller with differential outputs

-16-bit low power timer/pulse counter operational in the lowest power mode

-32-bit real time clock (RTC) with multiple alarms

-Watchdog timer

Current-to-Voltage Converter

-Supports up to 6 mA input range Supply Voltage

-2.7 to 5.5 V (regulator enabled)

-1.8 to 3.6 V (regulator disabled)

Low Power Features

-85 nA current mode with voltage supply monitor enabled

-350 nA current mode with RTC (internal oscillator)

-620 nA current mode with RTC (external oscillator)

-10 us wakeup (lowest power mode); 1.5 us analog setting time

-275 us/MHz active current

-Clocks can be gated off from unused peripherals to save power

2 x 12-Bit Analog-to-Digital Converters

-Up to 28 input channels

-Up to 250 ksps 12-bit mode or 1 Msps 10-bit mode

-Single, simultaneous, and interleaving modes supported

-Channel sequencer enables automatic multiplexing of multiple channels without firmware intervention

-Internal VREF or external VREF supported

2 x 10-Bit Digital-to-Analog Converters

-DMA support for waveform generation

-Four-word circular buffer to enable 12-bit mode

16-Channel Capacitance-to-Digital Converter

-Supports buttons, sliders, wheels, and capacitive proximity

-Fast conversion time; <1 uA wake-on-touch average current

Two Low-Current Comparators

-Integrated 6-bit programmable reference voltage

-400 nA current consumption in low power mode 16-Channel DMA Controller

-Supports ADC, DAC, USB, I2C, I2S, SPI, USART, AES, EPCA, capacitive sensing, external triggers, and timers Up to 65 Flexible I/O

-Up to 59 contiguous GPIO with two priority crossbars providing flexibility in pin assignments; 12 x 5 V tolerant GPIO

-Up to 6 programmable high drive capable (5?00 mA, 1.8? V) I/O can drive LEDs, power MOSFETs, buzzers, etc.

Communication Interfaces

-USB 2.0-compliant full speed with 10 endpoints, 2 kB buffer, oscillator with automatic frequency correction, and transceiver; no external components needed

-2 x USARTs and 2 x UARTs with IrDA and ISO7816 SmartCard

-3 x SPIs, 2 x I2C, I2S (receive and transmit)

On-Chip Debugging

-Serial wire debug (SWD) and JTAG allow for full-speed, non-intrusive debug

-Serial wire viewer (SWV) available in 64 / 80 / 92-pin packages

-Cortex-M3 embedded trace macrocell (ETM) in 80 / 92-pin packages

Temperature Range: -40 to +85℃

Package Options

-QFN options: 40-pin (6 x 6 mm), 64-pin (9 x 9 mm)

-TQFP options: 64-pin (10 x 10 mm), 80-pin (12 x 12 mm)

-LGA option: 92-pin (7 x 7 mm)

图1.SiM3U1xx系列方框图

SiM3U1xx (USB)增强开发套件

包括:

Unified Development Platform Motherboard

SiM3U1xx MCU Card

SiM3U1xx UDP I/O Expander Card

UDP I2S Audio I/O Board

USB Debug Adapter

Wall Mounted Universal Power Supply

(2) USB Cables (mini)

USB Cable (standard)

图2.统一开发平台(UDP)方框图

图3.UDP SiM3U1xx MCU卡外形图

图4.UDP SiM3U1xx MCU卡电路图(1)

图5.UDP SiM3U1xx MCU卡电路图(2)

图6.UDP SiM3U1xx MCU卡电路图(3)

图7.UDP SiM3U1xx MCU卡电路图(4)

图8.UDP SiM3U1xx MCU卡电路图(5)

图9.UDP SiM3U1xx MCU卡电路图(6)

UDP SiM3U1xx MCU卡材料清单(BOM):


详情请见:
http://www.silabs.com/Support%20Documents/TechnicalDocs/SiM3U1xx.pdf
和
http://www.silabs.com/Support%20Documents/TechnicalDocs/UPMU-M3U160.pdf