參數(shù)資料
型號(hào): M3804
廠商: Mitsubishi Electric Corporation
英文描述: Single Chip 8 Bits Microcomputer(8位單片機(jī))
中文描述: 單芯片8位單片機(jī)(8位單片機(jī))
文件頁(yè)數(shù): 61/135頁(yè)
文件大小: 2055K
代理商: M3804
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61
3803/3804 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Fig. 52 Structure of serial I/O3 control registers
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Serial I/O3 control register
(SIO3CON : address 0032
16
)
b
0
b
0
BRG count source selection bit (CSS)
0: f(X
IN
) (f(X
CIN
) in low-speed mode)
1: f(X
IN
)/4 (f(X
CIN
)/4 in low-speed mode)
Serial I/O3 synchronous clock selection bit (SCS)
0: BRG output divided by 4 when clock synchronous
serial I/O is selected, BRG output divided by 16
when UART is selected.
1: External clock input when clock synchronous serial
I/O is selected, external clock input divided by 16
when UART is selected.
S
RDY3
output enable bit (SRDY)
0: P3
7
pin operates as normal I/O pin
1: P3
7
pin operates as S
RDY3
output pin
Transmit interrupt source selection bit (TIC)
0: Interrupt when transmit buffer has emptied
1: Interrupt when transmit shift operation is completed
Transmit enable bit (TE)
0: Transmit disabled
1: Transmit enabled
Receive enable bit (RE)
0: Receive disabled
1: Receive enabled
Serial I/O3 mode selection bit (SIOM)
0: Clock asynchronous (UART) serial I/O
1: Clock synchronous serial I/O
Serial I/O3 enable bit (SIOE)
0: Serial I/O disabled
(pins P3
4
to P3
7
operate as normal I/O pins)
1: Serial I/O enabled
(pins P3
4
to P3
7
operate as serial I/O pins)
b7
U
(UART3CON : address 0033
16
)
A
R
T
3
c
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t
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o
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r
e
g
i
s
t
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Character length selection bit (CHAS)
0: 8 bits
1: 7 bits
Parity enable bit (PARE)
0: Parity checking disabled
1: Parity checking enabled
Parity selection bit (PARS)
0: Even parity
1: Odd parity
Stop bit length selection bit (STPS)
0: 1 stop bit
1: 2 stop bits
P3
5
/T
X
D
3
P-channel output disable bit (POFF)
0: CMOS output (in output mode)
1: N-channel open drain output (in output mode)
Not used (return
1
when read)
b0
S
a
e
0
6
)
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