m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 112

• Manufacturer Part Number: m5m51016btp
• Description: Renesas 16-bit Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Figure 2.5.14. Operation timing of transmission in serial interface special function slave mode, without clock delay
Example of wiring
Example of operation
Transmit interrupt
request bit (IR)
Transmit register
empty flag
Transmit buffer
empty flag
Transfer clock
The above timing applies to the following settings:
Shown in ( ) are bit symbols.
f
EXT
• CLK polarity select bit = “0”.
• External clock is selected.
: frequency of external clock
(TXEPT)
STxDi
(TE)
CLKi
(TI)
SSi
“H”
“0”
“0”
“1”
“1”
“L”
“0”
“1”
“0”
“1”
page 103 of 354
(1) Set SSi port to "L" with the output from the receiver side IC port
Indeter-
(2) Transmission enabled
minate
Microcomputer
(3) Start transmission
D
0
Transfer data is set to UARTi transmit buffer register
Cleared to “0” when interrupt request is accepted, or cleared by software
D
1
ST
D
CLKi
2
SSi
X
Di
D
3
D
4
Make sure that the following conditions are met when
the CLKi pin input =“H” before data reception
1 / f
• Transmit enable bit
• Transmit data written to UARTi transmit buffer register
D
5
EXT
Transferred from UARTi transmit butter register to transmit register
D
6
(4) Transmission is complete
D
7
(5) Transmit next data
D
0
“1”
D
1
D
2
D
3
D
2. Serial Interface Special Function
4
CLK
R
Receiver side IC
Port
D
X
5
D
D
6
D
7