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M30620FCAFP Datasheet(PDF) 378 Page - Renesas Technology Corp

Part # M30620FCAFP
Description  16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES
PDF  615 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M30620FCAFP Datasheet(HTML) 378 Page - Renesas Technology Corp

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Clock-Synchronous Serial I/O
Mitsubishi microcomputers
M16C / 62A Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
2-61
D0 D1 D2 D3
D4 D5 D6
D7
D0 D1
D2 D3 D4 D5 D6 D7
TCLK
Stopped pulsing because
transfer enable bit = “0”
Tc = TCLK = 2(n + 1) / fi
fi: frequency of BRGi count source (f1, f8, f32)
n: value set to BRGi
Transfer clock
Transmit
enable bit (TE)
Transmit
buffer empty
flag (Tl)
CLKi
TxDi
Transmit register
empty flag
(TXEPT)
“H”
“L”
“0”
“1”
“0”
“1”
“0”
“1”
CTSi
Transmit
interrupt request
bit (IR)
“0”
“1”
Cleared to “0” when interrupt request is accepted, or cleared by software
D0 D1
D2 D3
D4 D5 D6
D7
(1) Transmission enabled
(2) Confirming CTS
(3) Start transmission Tc
(4) Transmission is complete
(5) Transmit next data
Data is set to UARTi transmit buffer register
Stopped pulsing because CTSi = “H”
Shown in ( ) are bit symbols.
The above timing applies to the following settings:
• Internal clock is selected.
• CTS function is selected.
• CLK polarity select bit = “0”.
• Transmit interrupt cause select bit = “0”.
Transferred from UARTi transmit buffer register to UARTi transmit register
Example of wiring
CLKi
TXDi
CTSi
CLK
RXD
Port
Microcomputer
Receiver side IC
(Note)
Note : Since TXD2 pin is N-channel open drain,
this pin needs pull-up resistor.
Figure 2.4.7. Operation timing of transmission in clock-synchronous serial I/O mode
Example of operation



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