physis 发表于 2012-3-8 18:04:37

silicon labs也搞了个Cortex-M3的MCU出来

http://www.silabs.com/products/mcu/Pages/32-bit-microcontrollers.aspx

两个系列，一个带usb的，一个不带usb的

把带usb的贴出来看看


SiM3U1xx USB MCUs
====================
Features

    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)


http://cache.amobbs.com/bbs_upload782111/files_53/ourdev_724975RP8TRE.jpg
(原文件名:SiM3U1xx_BD.jpg)

seaso 发表于 2012-3-8 18:27:13

两个系列都不带网口，不知能否提供支持他们本家的CP220X的TCP/IP库,否则有什么亮点呢，怎么和别家的M3竞争呢

SNOOKER 发表于 2012-3-8 19:30:42

很强悍

Excellence 发表于 2012-3-8 19:55:45

主频低，
FLASH小
外设少

就看价格怎样？

leavic 发表于 2012-3-8 20:34:20

毫无优势啊

wzyllgx 发表于 2012-3-8 20:41:42

鸡肋！

millwood0 发表于 2012-3-8 21:04:56

2 timers?

really?
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