UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 513

• 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
Figure 17-29 Command Transmission from Master Device to Slave Device
Remark This timing applies to the following conditions:
• Master: transmission only enabled
• Slave : reception only enabled, ACKE = 0, BSYE = 1
Setting
CMDT
CMDD
Setting
to SIO
Write
1
C7
2
C6
Serial Transmit Operation
Serial Receive Operation
3
C5
4
Command
C4
5
C3
6
C2
7
C1
8
C0
INTCSI
Generation
Generation
INTCSI
Read
SIO
Interrupt Processing (Preparation
for Next Serial Transfer)
Command
Analysis
Setting
Output
ACKT
ACK
ACK
Setting
ACKD
Output
BUSY
BUSY
Clearance
Clearance
BUSY
BUSY
Stoppage
SCK0
READY