參數(shù)資料
型號(hào)： UPD789122UC-XXX-5A4
元件分類： 微控制器/微處理器
英文描述： 8-BIT, MROM, MICROCONTROLLER, PDSO30
封裝： 0.300 INCH, SHRINK, PLASTIC, SOP-30
文件頁數(shù)： 13/54頁
文件大?。?/td> 481K
代理商： UPD789122UC-XXX-5A4
Data Sheet U13025EJ2V0DS00
18
PD789121, 789122, 789124, 789131, 789132, 789134
5.5
Serial Interface 20
A one-channel serial interface is incorporated.
Serial interface 20 has following three modes:
Operation stop mode:
Power consumption can be reduced.
Asynchronous serial interface (UART) mode: A dedicated baud rate generator is incorporated.
3-wire serial I/O mode:
A function to select the clock phase or data phase is incorporated.
Figure 5-6. Block Diagram of Serial Interface 20
SI20/P22/RXD20
SO20/P21/TXD20
SS20/P23
/CPT20/INTP0
INTST20
fCC/2 to fCC/2
8
INTSR20/INTCSI20
SCK20/P20
/ASCK20
Internal bus
Reception buffer
register 20
(RXB20/SIO20)
Transmission shift
register 20
(TXS20/SIO20)
Reception shift register 20
(RXS20)
Data phase
control
Clock phase
control
Transmission
data counter
Reception
data counter
Selector
Baud rate generator
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