mc908jl16 Freescale Semiconductor, Inc, mc908jl16 Datasheet - Page 121

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mc908jl16

Manufacturer Part Number
mc908jl16
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet

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Freescale Semiconductor
(a) Master Transmit Mode
(b) Master Receive Mode
(c) Slave Transmit Mode
(d) Slave Receive Mode
Shaded data packets indicate transmissions by the MCU
Figure 8-10. Data Transfer Sequences for Master/Slave Transmit/Receive Modes
MMTXBE=0
MMRW=0
MMAST=1
Data1 → MMDTR
MMRXBF=0
MMRW=1
MMAST=1
MMTXBE=0
(dummy data → MMDTR)
MMTXBE=1
MMRXBF=0
MMTXBE=0
MMRXBF=0
START
START
START
START
Address
Address
Address
Address
MMRXIF=1
MMRXBF=1
MMATCH=1
MMSRW=0
MMTXBE=1
MMTXIF=1
Data2 → MMDTR
MMRXIF=1
MMRXBF=1
MMATCH=1
MMSRW=1
Data1 → MMDTR
0
1
1
0
MC68HC908JL16 Data Sheet, Rev. 1.1
ACK
ACK
ACK
ACK
TX Data1
RX Data1
TX Data1
RX Data1
MMTXBE=1
MMTXIF=1
Data2 → MMDTR
MMTXBE=1
MMTXIF=1
Data3 → MMDTR
Data1 → MMDRR
MMRXIF=1
MMRXBF=1
Data1 → MMDRR
MMRXIF=1
MMRXBF=1
ACK
ACK
ACK
ACK
DataN+2 → MMDTR
DataN+2 → MMDTR
RX DataN
RX DataN
TX DataN
TX DataN
DataN → MMDRR
DataN → MMDRR
MMTXBE=1
MMRXBF=1
MMRXBF=1
MMTXBE=1
MMRXIF=1
MMRXIF=1
Programming Considerations
MMTXIF=1
MMTXIF=1
ACK
NAK
NAK
ACK
MMNAKIF=1
MMAST=0
MMTXBE=0
MMNAKIF=1
MMAST=0
MMNAKIF=1
MMTXBE=0
STOP
STOP
STOP
STOP
121

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