Section 18 I
2
C Bus Interface (IIC)
Rev. 1.00 Apr. 28, 2008 Page 546 of 994
REJ09B0452-0100
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, the FSX bit in SARX, 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]
All operating modes:
1. When a start condition is detected in transmit mode
and the ICDRE flag is set to 1
2. When data is transferred from ICDRT to ICDRS in
transmit mode and the ICDRE flag is set to 1
3. When data is transferred from ICDRS to ICDRR in
receive mode and the ICDRF flag is set to 1
4. If 1 is received as the acknowledge bit (when the
ACKE bit is 1 in transmit mode) at the completion of
data transmission
I
2
C bus format master mode:
1. When a wait is inserted between the data and
acknowledge bit when the WAIT bit is 1
2. 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:
1. When the slave address (SVA or SVAX) matches
after the reception of the first frame following the
start condition and the AAS flag or AASX flag is set
to 1
2. When the general call address is detected after the
reception of the first frame following the start
condition and the ADZ flag is set to 1 (the FS bit in
SAR is 0)
3. When a stop condition is detected (when the STOP
or ESTP flag is set to 1) while the STOPIM bit is 0
Содержание H8S/2100 Series
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Страница 54: ...Section 1 Overview Rev 1 00 Apr 28 2008 Page 28 of 994 REJ09B0452 0100...
Страница 92: ...Section 2 CPU Rev 1 00 Apr 28 2008 Page 66 of 994 REJ09B0452 0100...
Страница 158: ...Section 5 Interrupt Controller Rev 1 00 Apr 28 2008 Page 132 of 994 REJ09B0452 0100...
Страница 244: ...Section 8 8 Bit PWM Timer PWMU Rev 1 00 Apr 28 2008 Page 218 of 994 REJ09B0452 0100...
Страница 330: ...Section 10 16 Bit Timer Pulse Unit TPU Rev 1 00 Apr 28 2008 Page 304 of 994 REJ09B0452 0100...
Страница 354: ...Section 11 16 Bit Cycle Measurement Timer TCM Rev 1 00 Apr 28 2008 Page 328 of 994 REJ09B0452 0100...
Страница 380: ...Section 12 16 Bit Duty Period Measurement Timer TDP Rev 1 00 Apr 28 2008 Page 354 of 994 REJ09B0452 0100...
Страница 416: ...Section 13 8 Bit Timer TMR Rev 1 00 Apr 28 2008 Page 390 of 994 REJ09B0452 0100...
Страница 494: ...Section 15 Serial Communication Interface SCI Rev 1 00 Apr 28 2008 Page 468 of 994 REJ09B0452 0100...
Страница 612: ...Section 18 I 2 C Bus Interface IIC Rev 1 00 Apr 28 2008 Page 586 of 994 REJ09B0452 0100...
Страница 706: ...Section 20 LPC Interface LPC Rev 1 00 Apr 28 2008 Page 680 of 994 REJ09B0452 0100...
Страница 752: ...Section 21 FSI Interface Rev 1 00 Apr 28 2008 Page 726 of 994 REJ09B0452 0100...
Страница 774: ...Section 23 RAM Rev 1 00 Apr 28 2008 Page 748 of 994 REJ09B0452 0100...
Страница 1008: ...Section 28 Electrical Characteristics Rev 1 00 Apr 28 2008 Page 982 of 994 REJ09B0452 0100...
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