参数资料
型号: M38004E8SS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, UVPROM, 8 MHz, MICROCONTROLLER, CDIP64
封装: 0.750 INCH, 1.78 MM PITCH, WINDOWED, CERAMIC, SDIP-64
文件页数: 155/174页
文件大小: 1752K
代理商: M38004E8SS
2-32
3800 GROUP USER’S MANUAL
APPLICATION
2.3 Serial I/O
Serial I/O status register (Address : 1916)
SIOSTS
Baud rate generator (Address : 1C16)
BRG
Set “division ratio – 1”
Transmit buffer empty flag
Check to be transferred data from the Transmit buffer register to
Transmit shift register.
Writable the next transmission data to the Transmit buffer register
at being set to “1.”
Transmitting side
Transmit shift register shift completion flag
Check a completion of transmitting 1-byte data with this flag
“1” : Transmit shift completed
Serial I/O control register (Address : 1A16)
SIOCON
BRG counter source selection bit : f(XIN)
Serial I/O synchronous clock selection bit : BRG/4
Transmit enable bit : Transmit enabled
Receive enable bit : Receive disabled
Serial I/O mode selection bit : Clock synchronous serial I/O
Serial I/O enable bit : Serial I/O enabled
Interrupt edge selection register (Address : 3A16)
INTEDGE
INT0 active edge selection bit : Select INT0 falling edge
b7
b0
b7
b0
11 0 1
00
b7
b0
7
b7
b0
0
Fig. 2.3.15 Setting of related registers at a transmitting side [Communication using a clock
synchronous serial I/O]
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