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Bit 6—Normal Stop Condition Detection Flag (STOP): Indicates that a stop condition has been
detected after completion of frame transfer in I
Bit 6: STOP
0
1
2
Bit 5—I
C Bus Interface Continuous Transmission/Reception Interrupt Request Flag
(IRTR): Indicates that the I
source is completion of reception/transmission of one frame in continuous transmission/reception.
When the IRTR flag is set to 1, the IRIC flag is also set to 1 at the same time.
IRTR flag setting is performed when the TDRE or RDRF flag is set to 1. IRTR is cleared by
reading IRTR after it has been set to 1, then writing 0 in IRTR. IRTR is also cleared automatically
when the IRIC flag is cleared to 0.
Bit 5: IRTR
0
1
Description
[Clearing conditions]
1. When 0 is written in STOP after reading STOP = 1
2. When the IRIC flag is cleared to 0
[Setting conditions]
•
2
In I
C bus format slave mode
When a stop condition is detected after completion of frame transfer
•
In other modes
No meaning
2
C bus interface has issued an interrupt request to the CPU, and the
Description
Waiting for transfer, or transfer in progress
[Clearing conditions]
1. When 0 is written in IRTR after reading IRTR = 1
2. When the IRIC flag is cleared to 0
Continuous transfer state
[Setting conditions]
•
2
In I
C bus interface slave mode
When the TDRE or RDRF flag is set to 1 when AASX = 1
•
In other modes
When the TDRE or RDRF flag is set to 1
2
C bus format slave mode.
317
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