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M30620FCAFP Datasheet(PDF) 122 Page - Mitsubishi Electric Semiconductor

Part # M30620FCAFP
Description  SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
PDF  274 Pages
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Manufacturer  MITSUBISHI [Mitsubishi Electric Semiconductor]
Direct Link  http://www.mitsubishichips.com
Logo MITSUBISHI - Mitsubishi Electric Semiconductor

M30620FCAFP Datasheet(HTML) 122 Page - Mitsubishi Electric Semiconductor

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Mitsubishi microcomputers
M16C / 62A Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Clock synchronous serial I/O mode
122
(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
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
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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