Section 17 I
2
C Bus Interface (IIC)
Rev. 3.00 Jan 25, 2006 page 488 of 872
REJ09B0286-0300
Bit
Bit Name
Initial Value R/W
Description
1
IRIC
0
R/(W)
*
I
2
C Bus Interface Interrupt Request Flag
Indicates that the IIC module has issued an interrupt
request to the CPU.
This flag is set at different times depending on the FS bit
in SAR, the FSX bit in SARX, and the WAIT bit in ICMR.
For details, see section 17.5.6, IRIC Setting Timing and
SCL Control. The conditions under which this flag is set
also differ depending on the setting of the ACKE bit in
ICCR.
[Setting conditions]
I
2
C bus format master mode:
•
When a start condition is detected in the bus line
state after a start condition is issued (when the
ICDRE flag is set to 1 because of first frame
transmission)
•
When a wait is inserted between the data and
acknowledge bit when the WAIT bit is 1 (fall of the 8th
transmit/receive clock)
•
At the end of data transfer (rise of the 9th
transmit/receive clock without no waits)
•
When a slave address is received after bus arbitration
is lost (first frame after start condition)
•
If 1 is received as the acknowledge bit (when the
ACKB bit in ICSR is set to 1) when the ACKE bit is 1
•
When the AL flag is set to 1 after bus arbitration is
lost while the ALIE bit is 1
I
2
C bus format slave mode:
•
When the slave address (SVA or SVAX) matches
(when the AAS or AASX flag in ICSR is set to 1) and
at the end of data transfer up to the subsequent
retransmission start condition or stop condition
detection (rise of the 9th transmit/receive clock)
•
When the general call address is detected (when 0 is
received as the R/
W
bit and the ADZ flag in ICSR is
set to 1) and at the end of data reception up to the
subsequent retransmission start condition or stop
condition detection (rise of the 9th receive clock)
•
If 1 is received as the acknowledge bit (when the
ACKB bit in ICSR is set to 1) when the ACKE bit is 1
•
When a stop condition is detected (when the STOP or
ESTP flag in ICSR is set to 1) when the STOPIM bit is
0
Содержание H8S/2158
Страница 10: ...Rev 3 00 Jan 25 2006 page viii of lii...
Страница 36: ...Rev 3 00 Jan 25 2006 page xxxiv of lii B Product Lineup 863 C Package Dimensions 864 Index 865...
Страница 47: ...Rev 3 00 Jan 25 2006 page xlv of lii Appendix Figure C 1 Package Dimensions TBP 112A 864...
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Страница 70: ...Section 1 Overview Rev 3 00 Jan 25 2006 page 16 of 872 REJ09B0286 0300...
Страница 118: ...Section 3 MCU Operating Modes Rev 3 00 Jan 25 2006 page 64 of 872 REJ09B0286 0300...
Страница 126: ...Section 4 Exception Handling Rev 3 00 Jan 25 2006 page 72 of 872 REJ09B0286 0300...
Страница 198: ...Section 6 Bus Controller Rev 3 00 Jan 25 2006 page 144 of 872 REJ09B0286 0300...
Страница 326: ...Section 10 8 Bit PWM Timer PWM Rev 3 00 Jan 25 2006 page 272 of 872 REJ09B0286 0300...
Страница 440: ...Section 15 Watchdog Timer WDT Rev 3 00 Jan 25 2006 page 386 of 872 REJ09B0286 0300...
Страница 606: ...Section 17 I 2 C Bus Interface IIC Rev 3 00 Jan 25 2006 page 552 of 872 REJ09B0286 0300...
Страница 742: ...Section 19 Multimedia Card Interface MCIF Rev 3 00 Jan 25 2006 page 688 of 872 REJ09B0286 0300...
Страница 744: ...Section 20 Encryption Operation Circuit DES and GF Rev 3 00 Jan 25 2006 page 690 of 872 REJ09B0286 0300...
Страница 750: ...Section 21 D A Converter Rev 3 00 Jan 25 2006 page 696 of 872 REJ09B0286 0300...
Страница 768: ...Section 22 A D Converter Rev 3 00 Jan 25 2006 page 714 of 872 REJ09B0286 0300...
Страница 770: ...Section 23 RAM Rev 3 00 Jan 25 2006 page 716 of 872 REJ09B0286 0300...
Страница 824: ...Section 26 Clock Pulse Generator Rev 3 00 Jan 25 2006 page 770 of 872 REJ09B0286 0300...
Страница 844: ...Section 27 Power Down Modes Rev 3 00 Jan 25 2006 page 790 of 872 REJ09B0286 0300...
Страница 878: ...Section 28 List of Registers Rev 3 00 Jan 25 2006 page 824 of 872 REJ09B0286 0300...
Страница 926: ...Index Rev 3 00 Jan 25 2006 page 872 of 872 REJ09B0286 0300...