UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 514

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

Slave Device Processing (Reception Side)
Master 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:
Figure 17-30 Data Transmission from Master Device to Slave Device
• Master: transmission only enabled
• Slave : reception only enabled, ACKE = 0, BSYE = 1
to SIO
Write
1
D7
2
D6
3
Serial Transmit Operation
D5
Serial Receive Operation
4
D4
Data
5
D3
6
D2
7
D1
8
D0
Generation
Generation
INTCSI
INTCSI
Read
Interrupt Processing (Preparation for Next Serial Transfer)
SIO
Setting
ACKT
Output
ACK
ACK
Output
BUSY
Setting
ACKD
BUSY
Clearance
Clearance
BUSY
BUSY
Stoppage
READY
SCK0