參數(shù)資料
型號: M30302M8-XXXGP
元件分類: 微控制器/微處理器
英文描述: 16-BIT, MROM, MICROCONTROLLER, PQFP100
封裝: 14 X 14 MM, PLASTIC, QFP-100
文件頁數(shù): 11/177頁
文件大?。?/td> 2355K
代理商: M30302M8-XXXGP
Clock synchronous serial I/O mode
108
Mitsubishi microcomputers
M16C / 30 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
(a) Polarity select function
As shown in Figure 1.16.12, the CLK polarity select bit (bit 6 at addresses 03A416, 03AC16, 037C16)
allows selection of the polarity of the transfer clock.
When CLK polarity select bit = “1”
Note 2: The CLKi pin level when not
transferring data is “L”.
D1
D2
D3
D4
D5
D6
D7
D1
D2
D3
D4
D5
D6
D7
D0
TXDi
RXDi
CLKi
When CLK polarity select bit = “0”
Note 1: The CLKi pin level when not
transferring data is “H”.
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
D0
TXDi
RXDi
CLKi
Figure 1.16.12. Polarity of transfer clock
(b) LSB first/MSB first select function
As shown in Figure 1.16.13, when the transfer format select bit (bit 7 at addresses 03A416, 03AC16,
037C16) = “0”, the transfer format is “LSB first”; when the bit = “1”, the transfer format is “MSB first”.
Figure 1.16.13. Transfer format
LSB first
When transfer format select bit = “0”
D0
D0
D1
D2
D3
D4
D5
D6
D7
D1
D2
D3
D4
D5
D6
D7
TXDi
RXDi
CLKi
When transfer format select bit = “1”
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
TXDi
RXDi
CLKi
MSB first
Note: This applies when the CLK polarity select bit = “0”.
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