S9S08AW16A FREESCALE [Freescale Semiconductor, Inc], S9S08AW16A Datasheet - Page 242

• Manufacturer Part Number: S9S08AW16A
• Description: HCS08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

NOTES:
1. If general call is enabled, a check must be done to determine whether the received address was a general call address (0x00). If the received address was a
2.
Inter-Integrated Circuit (S08IICV2)
242
general call address, then the general call must be handled by user software.
When 10-bit addressing is used to address a slave, the slave sees an interrupt following the first byte of the extended address. User software must ensure that for
this interrupt, the contents of IICD are ignored and not treated as a valid data transfer.
Dummy Read
Switch to
from IICD
Rx Mode
Y
Transmitted
(Master Rx)
Byte to IICD
Addr Cycle
Write Next
Last Byte
RXAK=0
End of
?
?
?
Y
N
N
Stop Signal
TX
Generate
(MST = 0)
Y
N
Tx/Rx
Set TXACK =1
?
Figure 13-12. Typical IIC Interrupt Routine
Y
Byte to Be Read
Byte to Be Read
MC9S08AC16 Series Data Sheet, Rev. 8
Read Data
from IICD
and Store
2nd Last
RX
Last
?
?
N
N
Stop Signal
Generate
(MST = 0)
Y
Y
RTI
Master
Mode
Clear
IICIF
?
Write Data
(Read)
Set TX
to IICD
Mode
N
N
Y
Dummy Read
Clear ARBL
from IICD
IAAS=1
Set RX
SRW=1
Mode
Y
?
?
N
Address Transfer
(Write)
See Note 1
Tx Next
Byte
Y
Y
Y
Dummy Read
ACK from
from IICD
Arbitration
Receiver
Switch to
Freescale Semiconductor
IAAS=1
Rx Mode
TX/RX
Lost
?
?
?
?
N
N
N
Data Transfer
TX
See Note 2
Read Data
from IICD
and Store
RX