UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 512

• 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
Hardware Processing
Program Processing
Program Processing
Hardware Operation
SCK0 Pin
SB0 Pin
Figure 17-28 Address Transmission from Master Device to Slave Device
Remark This timing applies to the following conditions:
CMDT
Setting
CMDD
Setting
Setting
RELT
CMDD
Setting
• Master: transmission only enabled
• Slave : reception only enabled, ACKE = 0, BSYE = 1
Reset
RELD
CMDT
Setting
Setting
RELD
to SIO
Write
Clearance
CMDD
1
A7
2
A6
Serial Transmit Operation
Serial Receive Operation
3
A5
4
Address
A4
5
A3
6
A2
7
A1
8
A0
Generation
INTCSI
Generation
INTCSI
Read
SIO
Interrupt Processing (Preparation
for Next Serial Transfer)
Comparison
Address
ACKT
Setting
Output
ACK
ACK
Setting
ACKD
Output
BUSY
BUSY
Clearance
Clearance
BUSY
BUSY
Stoppage
SCK0
READY