UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 515

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

Master Device Processing (Reception Side)
Slave Device Processing (Transmission Side)
Transfer Lines
Program Processing
Hardware Operation
Program Processing
Hardware Operation
SCK0 Pin
SB0 Pin
Remark This timing applies to the following conditions:
BUSY
Figure 17-31 Data Transmission from Slave Device to Master Device
to SIO
Write
Clearance
BUSY
READY
• Master: reception only enabled, ACKE = 0
• Slave : transmission only enabled, BSYE = 1
Stoppage
SCK
Read
SIO0
1
D7
2
D6
Serial Transmit Operation
Serial Receive Operation
3
D5
4
D4
Data
5
D3
6
D2
7
D1
8
D0
Generation
Generation
INTCSI
INTCSI
Read
SIO
Setting
Output
ACKT
ACK
ACK
Setting
ACKD
BUSY
Output
BUSY
Receive Data Processing
Clearance
to SIO
Write
BUSY
READY
1
D7
Serial Receive
Operation
2
D6
3
D5