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P912XDP512F0MPVR 数据表(PDF) 417 Page - Freescale Semiconductor, Inc

部件名 P912XDP512F0MPVR
功能描述  HCS12X Microcontrollers
PDF  1348 Pages
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制造商  FREESCALE [Freescale Semiconductor, Inc]
网页  http://www.freescale.com
标志 FREESCALE - Freescale Semiconductor, Inc

P912XDP512F0MPVR 数据表(HTML) 417 Page - Freescale Semiconductor, Inc

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Chapter 9 Inter-Integrated Circuit (IICV2) Block Description
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
417
Figure 9-12. Flow-Chart of Typical IIC Interrupt Routine
Clear
Master
Mode
?
Tx/Rx
?
Last Byte
Transmitted
?
RXAK=0
?
End Of
Addr Cycle
(Master Rx)
?
Write Next
Byte To IBDR
Switch To
Rx Mode
Dummy Read
From IBDR
Generate
Stop Signal
Read Data
From IBDR
And Store
Set TXAK =1
Generate
Stop Signal
2nd Last
Byte To Be Read
?
Last
Byte To Be Read
?
Arbitration
Lost
?
Clear IBAL
IAAS=1
?
IAAS=1
?
SRW=1
?
TX/RX
?
Set TX
Mode
Write Data
To IBDR
Set RX
Mode
Dummy Read
From IBDR
ACK From
Receiver
?
Tx Next
Byte
Read Data
From IBDR
And Store
Switch To
Rx Mode
Dummy Read
From IBDR
RTI
YN
Y
Y
Y
Y
Y
Y
Y
Y
Y
N
N
N
N
N
N
N
N
N
Y
TX
RX
RX
TX
(Write)
(Read)
N
IBIF
Address Transfer
Data Transfer



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