參數(shù)資料
型號(hào): M38004E8SP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP64
封裝: 0.750 INCH, 1.78 MM PITCH, PLASTIC, SDIP-64
文件頁數(shù): 157/174頁
文件大?。?/td> 1752K
代理商: M38004E8SP
2-34
3800 GROUP USER’S MANUAL
APPLICATION
2.3 Serial I/O
Control procedure : Figure 2.3.17 shows a control procedure at a transmitting side, and Figure
2.3.18 shows a control procedure at a receiving side.
Fig. 2.3.17 Control procedure at a transmitting side [Communication using a clock synchronous
serial I/O]
RESET
Initialization
SIOCON
BRG
INTEDGE
.....
TB/RB (Address : 1816)
The first byte of a
transmission data
Write a transmission data
The Transmit buffer empty flag is set to “0”
by this writing.
Detect INT0 falling edge
IREQ1 (Address : 3C16), bit0?
1
0
Check to be transfered data from the Transmit
buffer register to the Transmit shift register.
(Transmit buffer empty flag)
SIOSTS (Address : 1916), bit0?
1
0
TB/RB (Address : 1816)
Write a transmission data
The Transmit buffer empty flag is set to “0”
by this writing.
The second byte of a
transmission data
Check to be transfered data from the Transmit
buffer register to the Transmit shift register.
(Transmit buffer empty flag)
SIOSTS (Address : 1916), bit0?
1
0
Check a shift completion of the Transmit shift register
(Transmit shift register shift completion flag)
SIOSTS (Address : 1916), bit2?
1
0
IREQ1 (Address : 3C16), bit0
0
q
X : This bit is not used in this application.
Set it to “0” or “1.” It’s value can be disregarded.
q
(Address : 1A16)
(Address : 1C16)
(Address : 3A16), bit0
8–1
0
1101XX002
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