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: 160/174页
文件大小: 1752K
代理商: M38004E8SS
2-37
3800 GROUP USER’S MANUAL
APPLICATION
2.3 Serial I/O
Figure 2.3.21 shows a setting of serial I/O related registers, and Figure 2.3.22 shows a setting of serial
I/O transmission data.
Fig. 2.3.22 Setting of serial I/O transmission data [Output of serial data]
Fig. 2.3.21 Setting of serial I/O related registers [Output of serial data]
Set a transmission data.
Check that transmission of the previous data is
completed before writing data (bit 3 of the
Interrupt request register 1 is set to “1”).
TB/RB
Transmit/Receive buffer register (Address : 18 16)
b7
b0
Serial I/O synchronous clock selection bit : BRG/4
SRDY
output enable bit : Not use the SRDY signal output function
0
Serial I/O transmit interrupt enable bit : Interrupt disabled
ICON1
Interrupt control register 1 (Address : 3E16)
Serial I/O transmit interrupt request bit
Using this bit, check the completion of
transmitting 1-byte base data.
“1” : Transmit shift completion
IREQ1
Interrupt request register 1 (Address : 3C16)
00
1
SIOCON
Serial I/O control register (Address : 1A16)
0
11
BRG count source selection bit : f(XIN)
Transmit interrupt source selection bit : Transmit shift operating completion
Transmit enable bit : Transmit enabled
1
Receive enable bit : Receive disabled
b7
b0
0
b7
b0
b7
b0
Serial I/O mode selection bit : Clock synchronous serial I/O
Serial I/O enable bit : Serial I/O enabled
0
P45/TXD P-channel output disable bit : CMOS output
UARTCON
UART control register (Address : 1B16)
b7
b0
7
Set “division ratio – 1”
BRG
Baud rate generator (Address : 1C16)
b7
b0
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