mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 313
mc68hc908sr12
Manufacturer Part Number
mc68hc908sr12
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908SR12.pdf
(404 pages)
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17.9 SMBus Protocols with PEC and without PEC
17.9.1 Quick Command
17.9.2 Send Byte
17.9.3 Receive Byte
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
Following is a description of the various MMIIC bus protocols with and
without a packet error code (PEC).
(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
Multi-Master IIC Interface (MMIIC)
1
Slave Address
Slave Address
Slave Address
Slave Address
Start Condition
Slave Address
Command Bit
Figure 17-13. Quick Command
Acknowledge
7
W
W
R
R
Figure 17-15. Receive Byte
Figure 17-14. Send Byte
ACK
ACK
ACK
ACK
RW
1
ACK
Command Code
Command Code
1
Data Byte
Data Byte
SMBus Protocols with PEC and without PEC
STOP
1
Stop Condition
ACK
ACK
NAK
ACK
Multi-Master IIC Interface (MMIIC)
STOP
STOP
PEC
PEC
Master to Slave
Slave to Master
ACK
NAK
Data Sheet
STOP
STOP
313
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