摘要:一些縮寫
LDO: LDO (Low Dropout Regulator) 的主要功能就是在輸入電壓 (Vin) 或是輸出電流 (Iout) 變動的情形下,仍然維持穩定的輸出電壓 (Vout)。
Source: http://allenluadvance.blogspot.tw/2009/04/ldo-regulator.html
JTAG: Joint Test Access Group,這個規格最原始的用意是拿來作為PCB 版偵錯檢查用的.
Source: http://tw.myblog.yahoo.com/chamberplus-taiwan/article?mid=712
CTMC: Charge Time Measurement Unit,
Source: http://www.microchip.com/stellent/groups/SiteComm_sg/documents/DeviceDoc/en542792.pdf,
http://ww1.microchip.com/downloads/cn/AppNotes/01375a_cn.pdf
UART: 常見於串列通訊上,是一種通用非同步傳送接收系統.
Source: http://www.vr.ncue.edu.tw/esa/C_8051SingleChipPracticalDesign/ch30/index30.htm
LIN: Local Interconnect Network, 低價位的初階多工通訊
Source: http://www.ni.com/white-paper/9733/zht/
IrDA: Infrared Data Association(紅外通訊技術)
Source: http://zh.wikipedia.org/wiki/%E7%BA%A2%E5%A4%96%E9%80%9A%E8%AE%AF%E6%8A%80%E6%9C%AF
SPI: The Serial Peripheral Interface (SPI) module is a synchronous serial interface useful for
communicating with other peripheral or microcontroller devices. The peripheral devices can
be serial EEPROMs, shift registers, display drivers, A/D converters, etc. The SPI module is
compatible with Motorola’s SPI and SIOP interfaces
Source: http://ww1.microchip.com/downloads/en/DeviceDoc/70206D.pdf
I2C: The Inter-Integrated Circuit™ (I2C™) module is a serial interface useful for communicating with
other peripheral or microcontroller devices. These peripheral devices may be serial EEPROMs,
display drivers, analog-to-digital converters, etc
Source: http://ww1.microchip.com/downloads/en/DeviceDoc/61116E.pdf
PMP: The Parallel Master Port (PMP) is a parallel 8-bit I/O module specifically designed to
communicate with a wide variety of parallel devices, such as communications peripherals, LCDs,
external memory devices, and microcontrollers. Because the interface to parallel peripherals
varies significantly, the PMP module is highly configurable.
Source: http://ww1.microchip.com/downloads/en/DeviceDoc/39713a.pdf
Compare SPI, I2C and UART:SPI总线由三条信号线组成:串行时钟(SCLK)、串行数据输出(SDO)、串行数据输入(SDI)。SPI总线可以实现 多个SPI设备互相连接。提供SPI串行时钟的SPI设备为SPI主机或主设备(Master),其他设备为SPI从机或从设备(Slave)。主从设备间可以实现全双工通信,当有多个从设备时,还可以增加一条从设备选择线。
I2C总线是双向、两线(SCL、SDA)、串行、多主控(multi-master)接口标准,具有总线仲裁机制,非常适合在器件之间进行近距离、非经常性的数据通信。
UART总线是异步串口,因此一般比前两种同步串口的结构要复杂很多,一般由波特率产生器(产生的波特率等于传输波特率的16倍)、UART接收器、UART发送器组成,硬件上由两根线,一根用于发送,一根用于接收。
Source: http://www.cnblogs.com/lucky-apple/archive/2008/07/03/1234581.html