Section 18
I
2
C Bus Interface (IIC)
Rev. 1.00 Mar. 12, 2008 Page 601 of 1178
REJ09B0403-0100
Bit Bit
Name
Initial
Value R/W
Description
1 IRIC 0 R/(W)
*
I
2
C Bus Interface Interrupt Request Flag
Indicates that the I
2
C bus interface has issued an interrupt
request to the CPU.
IRIC is set at different times depending on the FS bit in
SAR and the WAIT bit in ICMR. See section 18.4.7, IRIC
Setting Timing and SCL Control. The conditions under
which IRIC 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)
•
When a slave address is received after bus mastership
is lost
•
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 mastership 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 clock)
•
When the general call address is detected (when the 0
is received for R/
W
bit, and 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)
•
When 1 is received as an acknowledge bit while the
ACKE bit is 1 (when the ACKB bit is set to 1)
•
When a stop condition is detected while the STOPIM bit
is 0 (when the STOP or ESTP flag in ICSR is set to 1)
Summary of Contents for H8S Family
Page 2: ...Rev 1 00 Mar 12 2008 Page ii of xIviii...
Page 8: ...Rev 1 00 Mar 12 2008 Page viii of xIviii...
Page 28: ...Rev 1 00 Mar 12 2008 Page xxviii of xIviii...
Page 48: ...Rev 1 00 Mar 12 2008 Page xlviii of xIviii...
Page 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Page 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Page 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Page 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Page 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Page 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Page 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Page 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Page 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Page 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Page 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Page 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Page 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Page 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
Page 1226: ...Rev 1 00 Mar 12 2008 Page 1178 of 1178 REJ09B0403 0100...
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Page 1230: ...H8S 2472 Group H8S 2462 Group Hardware Manual...