sc9s12hy64j0vllr Freescale Semiconductor, Inc, sc9s12hy64j0vllr Datasheet - Page 377

• Manufacturer Part Number: sc9s12hy64j0vllr
• Description: S12 Microcontrollers Mcu 16-bit Hcs12 Cisc 32kb Flash 5v Tray
• Manufacturer: Freescale Semiconductor, Inc

DA
CL
DA
CL
Signal
10.4.1.1
When the bus is free, i.e. no master device is engaging the bus (both SCL and SDA lines are at logical
high), a master may initiate communication by sending a START signal.As shown in
START signal is defined as a high-to-low transition of SDA while SCL is high. This signal denotes the
beginning of a new data transfer (each data transfer may contain several bytes of data) and brings all slaves
out of their idle states.
Freescale Semiconductor
Signal
Start
Start
SCL
SDA
MSB
MSB
ADR7 ADR6 ADR5 ADR4ADR3 ADR2 ADR1R/W
ADR7 ADR6 ADR5 ADR4 ADR3 ADR2 ADR1R/W
1
1
2
2
START Signal
Calling Address
START Condition
Calling Address
3
3
4
4
5
5
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
Figure 10-10. IIC-Bus Transmission Signals
Figure 10-11. Start and Stop Conditions
6
6
7
7
Read/
Write
Read/
Write
LSB
LSB
8
8
Ack
Ack
Bit
9
Bit
9
XX
Repeated
XXX
Signal
Start
MSB
MSB
ADR7 ADR6 ADR5 ADR4 ADR3 ADR2 ADR1R/W
D7
1
1
Inter-Integrated Circuit (IICV3) Block Description
D6
2
2
New Calling Address
D5
3
3
STOP Condition
Data Byte
D4
4
4
D3
5
5
Figure
D2
6
6
D1
7
7
10-10, a
Read/
Write
LSB
LSB
D0
8
8
Ack
No
Bit
Ack
9
No
9
Bit
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