參數(shù)資料
型號： M37641M8
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機
文件頁數(shù)： 28/149頁
文件大?。?/td> 1997K
代理商： M37641M8
28
7641 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PRELIMINARY
Notice: This is not a final specification.
change.
Some parametric limits are subject to
SERIAL I/O
The serial I/O can be used only for clock synchronous serial I/O.
The transmitter and the receiver must use the same clock. If the
internal clock is used, transfer is started by a write signal to the
serial I/O shift register.
[Serial I/O Control Register 1 (SIOCON1)] 002B
16
[Serial I/O Control Register 2 (SIOCON2)] 002C
16
Each of the serial I/O control registers 1 and 2 contains eight bits
which control various serial I/O functions.
Fig. 23 Structure of serial I/O control registers 1, 2
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Notes 1
: The source of serial I/O internal synchronous clock can be selected by bit 1 of
serial I/O control register 2.
2
: To set the slave mode, also set bit 4 of serial I/O control register 1 to “1”.
b
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7
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2
SPI mode select bit
0: Normal serial I/O mode
1: SPI compatible mode (
Note 2
)
Serial I/O internal clock select bit
0:
φ
1: SCSGCLK
SRXD input enable bit
0: SRXD input disabed
1: SRXD input enabed
Clock polarity select bit (CPoL)
0: SCLK starting at “L”
1: SCLK starting at “H”
Clock phase select bit (CPha)
0: Serial transfer starting at falling edge of SRDY
1: Serial transfer starting afer a half cycle of SCLK
passed at falling edge of SRDY
Reserved bits (“0” at read/write)
b
0
b
0 0 0
7
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