参数资料
型号: MC68HC05C8AFB
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
封装: QFP-44
文件页数: 154/166页
文件大小: 1914K
代理商: MC68HC05C8AFB
Serial Peripheral Interface (SPI)
Technical Data
MC68HC05C8A MC68HCL05C8A MC68HSC05C8A — Rev. 5.0
88
Serial Peripheral Interface (SPI)
MOTOROLA
10.3 Features
Full duplex, 4-wire synchronous transfers
Master or slave operation
Bus frequency divided by 2 (maximum) master bit frequency
Bus frequency (maximum) slave bit frequency
Four programmable master bit rates
Programmable clock polarity and phase
End-of-transmission interrupt flag
Write collision flag protection
Master-master mode fault protection capability
10.4 SPI Signal Description
gnal Description
The four basic signals (MOSI, MISO, SCK, and SS) are described in this
subsection. Each signal function is described for both the master and
slave mode.
10.4.1 Master In Slave Out (MISO)
The MISO line is configured as an input in a master device and as an
output in a slave device. It is one of the two lines that transfer serial data
in one direction, with the most significant bit sent first. The MISO line of
a slave device is placed in the high-impedance state if the slave is not
selected.
10.4.2 Master Out Slave In (MOSI)
The MOSI line is configured as an output in a master device and as an
input in a slave device. It is one of the two lines that transfer serial data
in one direction with the most significant bit sent first.
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