參數(shù)資料
型號: μPD784046(A)
廠商: NEC Corp.
英文描述: 16 Bit Single Chip Microcontrollers(16 位單片微控制器)
中文描述: 16位單片機微控制器(16位單片微控制器)
文件頁數(shù): 37/90頁
文件大?。?/td> 613K
代理商: ΜPD784046(A)
μ
PD784044(A), 784046(A)
37
7.6.1 Asynchronous serial interface/3-wire serial I/O (UART/IOE)
Two serial interface channels from which asynchronous serial interface mode and three-wire serial I/O mode
can be selected are provided.
(1) Asynchronous serial interface mode
In this mode, 1-byte data following a start bit is transferred or received.
The internal baud rate generator allows communication in a wide range of baud rates.
The clock input to the ASCK pin can also be divided to define a baud rate.
The baud rate generator can also set a baud rate conforming to the MIDI standard (31.25 kbps).
Figure 7-8. Block Diagram in Asynchronous Serial Interface Mode
Remark
f
CLK
: internal system clock
n = 0 to 11
m = 16 to 30
Internal bus
Receive buffer
RXB, RXB2
Receive shift
register
Transmit shift
register
INTST, INTST2
TXS, TXS2
Transmit control
Parity append
Receive control
Parity check
INTSR,
INTSR2
INTSER,
INTSER2
RxD, RxD2
TxD, TxD2
1/2m
1/2m
1/2
n+1
f
CLK
ASCK, ASCK2
Baud rate generator
S
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