mc68hc908ap8cfa Freescale Semiconductor, Inc, mc68hc908ap8cfa Datasheet - Page 245
mc68hc908ap8cfa
Manufacturer Part Number
mc68hc908ap8cfa
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908AP8CFA.pdf
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14.8 SMBus Protocols with PEC and without PEC
Following is a description of the various MMIIC bus protocols with and without a packet error code (PEC).
14.8.1 Quick Command
14.8.2 Send Byte
14.8.3 Receive Byte
Freescale Semiconductor
(a) Send Byte Protocol
(b) Send Byte Protocol with PEC
(a) Receive Byte Protocol
(b) Receive Byte Protocol with PEC
START
START
START
START
START
1
Slave Address
Slave Address
Slave Address
Slave Address
Start Condition
Slave Address
Command Bit
MC68HC908AP Family Data Sheet, Rev. 4
Acknowledge
7
Figure 14-13. Quick Command
W
W
R
R
Figure 14-15. Receive Byte
ACK
ACK
ACK
ACK
Figure 14-14. Send Byte
RW
1
ACK
Command Code
Command Code
1
Data Byte
Data Byte
STOP
1
Stop Condition
ACK
ACK
NAK
ACK
STOP
STOP
SMBus Protocols with PEC and without PEC
PEC
PEC
Master to Slave
Slave to Master
ACK
NAK
STOP
STOP
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