參數(shù)資料
型號: M37754S4CHP
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 16BIT CMOS MICROCOMPUTER
中文描述: 單芯片16位微機的CMOS
文件頁數(shù): 52/114頁
文件大?。?/td> 1116K
代理商: M37754S4CHP
MITSUBISHI MICROCOMPUTERS
M37754M8C-XXXGP, M37754M8C-XXXHP
M37754S4CGP, M37754S4CHP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
52
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
Selection of transfer format
In clock synchronous serial communication, transfer format can be
selected by bit 7 of the Transmit/Receive control register 0. When bit
7 is “0”, transfer format is LSB first. When bit 7 is “1”, transfer format
is MSB first.
This function is realized by changing connection relation between the
transmit buffer register and the receive buffer register when writing
transmit data to the transmit buffer register or reading receive data
from the receive buffer register. Accordingly, the transmitter’s opera-
tion is the same in both transfer formats.
Figure 64 shows the connection relation.
Fig. 64 Connection relation between transmit buffer register, receive buffer register, and data bus
Bit 7 in Transmit/Receive
control register 0
Write to transmit
buffer register
Read from receive
buffer register
0
(LSB first)
1
(MSB first)
Transmit buffer
register
DB
7
Data bus
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
DB
6
DB
5
DB
4
DB
3
DB
2
DB
1
DB
0
Transmit buffer
register
DB
7
Data bus
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
DB
6
DB
5
DB
4
DB
3
DB
2
DB
1
DB
0
Receive buffer
register
DB
7
Data bus
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
DB
6
DB
5
DB
4
DB
3
DB
2
DB
1
DB
0
Receive buffer
register
DB
7
Data bus
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
DB
6
DB
5
DB
4
DB
3
DB
2
DB
1
DB
0
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