M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 350
M30622MA-XXXFP
Manufacturer Part Number
M30622MA-XXXFP
Description
16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.M30622MA-XXXFP.pdf
(621 pages)
- Current page: 350 of 621
- Download datasheet (9Mb)
Clock-Synchronous Serial I/O
Figure 2.4.7. Operation timing of transmission in clock-synchronous serial I/O mode
Example of wiring
Example of operation
Transfer clock
Transmit
enable bit (TE)
Transmit
buffer empty
flag (Tl)
CTSi
CLKi
TxDi
Transmit register
empty flag
(TXEPT)
Transmit
interrupt request
bit (IR)
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”.
“H”
“1”
“0”
“1”
“0”
“L”
“1”
“0”
“1”
“0”
(1) Transmission enabled
(2) Confirming CTS
Data is set to UARTi transmit buffer register
(3) Start transmission Tc
D
0
D
1
Microcomputer
D
T
2
CLK
D
3
Transferred from UARTi transmit buffer register to UARTi transmit register
D
4
Note : Since T
D
CTSi
CLKi
T
5
X
Di
D
6
Cleared to “0” when interrupt request is accepted, or cleared by software
this pin needs pull-up resistor.
(4) Transmission is complete
D
7
Stopped pulsing because CTSi = “H”
(5) Transmit next data
X
D
D
0
2
D
pin is N-channel open drain,
1
Tc = T
(Note)
D
2
fi: frequency of BRGi count source (f
n: value set to BRGi
D
CLK
3
D
= 2(n + 1) / fi
4
D
5
Receiver side IC
D
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
6
CLK
R
Port
D
X
D
7
Stopped pulsing because
transfer enable bit = “0”
D
0
D
1
1
D
, f
2
8
, f
Mitsubishi microcomputers
D
M16C / 62 Group
3
32
)
D
4
D
5
D
6
D
7
335
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