參數(shù)資料
型號: μPD789025
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機微控制器(8位單片微控制器)
文件頁數(shù): 19/52頁
文件大小: 275K
代理商: ΜPD789025
19
μ
PD789022, 789024, 789025, 789026
5.4
Serial Interface
One-channel serial interface is incorporated.
Serial interface 00 supports the following two modes:
3-wire serial I/O mode
Asynchronous serial interface (UART) mode:
:
MSB-first or LSB-first transmission can be selected.
The dedicated baud rate generator is incorporated.
Figure 5-5. Block Diagram of Serial Interface 00
Internal bus
Reception buffer register
(RXB00/SIO00)
Direction control circuit
Direction control circuit
Transmission shift register
(TXS00/SIO00)
Reception shift register
(RXS00)
Transmission control circuit
Reception control circuit
SCK output
control circuit
Buad rate
generator
R
X
D/SI0/P22
T
X
D/SO0/P21
ASCK/SCK0/P20
INTST
INTSR/INTCSI0
f
X
/2 – f
X
/2
8
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