mc68hc908ap8a Freescale Semiconductor, Inc, mc68hc908ap8a Datasheet - Page 243

• Manufacturer Part Number: mc68hc908ap8a
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

14.8.6 Process Call
14.8.7 Block Read/Write
Freescale Semiconductor
(a) Process Call
(b) Process Call with PEC
START
START
START
START
(a) Block Read
(b) Block Read with PEC
(c) Block Write
(d) Block Write with PEC
START
START
START
START
Data Byte 2
Data Byte 2
Data Byte 1
Data Byte 1
Data Byte 1
Slave Address W
Slave Address
Slave Address W
Slave Address
Slave Address W
Slave Address W
Slave Address W
Slave Address W
ACK
ACK
ACK
ACK
R
R
ACK
ACK
ACK
ACK
Data Byte 2
Data Byte 2
ACK
ACK
ACK
ACK
Command Code
Command Code
Data Byte Low
Data Byte Low
Data Byte N
Data Byte N
MC68HC908AP A-Family Data Sheet, Rev. 3
Command Code
Command Code
Command Code
Command Code
Figure 14-19. Block Read/Write
Figure 14-18. Process Call
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
ACK
Data Byte High
Data Byte High
Data Byte Low
Data Byte Low
STOP
Data Byte N
Data Byte N
PEC
Byte Count = N
Byte Count = N
START
START
ACK
NAK
ACK
ACK
NAK
ACK
ACK
Slave Address
Slave Address
SMBus Protocols with PEC and without PEC
ACK
ACK
Data Byte High
Data Byte High
STOP
STOP
STOP
STOP
PEC
R
R
Data Byte 1
Data Byte 1
ACK
ACK
NAK
ACK
ACK
PEC
Byte Count = N
Byte Count = N
ACK
ACK
STOP
NAK
ACK
ACK
STOP
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