r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 980
r4f2426
Manufacturer Part Number
r4f2426
Description
16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R4F2426.pdf
(1302 pages)
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Section 16 I
16.5
There are six interrupt requests in this module; transmit data empty, transmit end, receive data full,
NACK detection, STOP recognition, and arbitration lost. Table 16.3 shows the contents of each
interrupt request.
Table 16.3 Interrupt Requests
Interrupt exception handling is performed when the interrupt conditions listed in table 16.3 are set
to 1 and the CPU is ready to accept interrupts. During exception handling, the interrupt sources
should be cleared. Note, however, that TDRE and TEND are automatically cleared by writing
transmit data to ICDRT, and RDRF is automatically cleared by reading data from ICDRR. In
particular, if TDRE is set at the same time transmit data is written to ICDRT, and then TDRE is
cleared again, an extra byte of data may be transmitted.
Rev. 1.00 Sep. 19, 2008 Page 952 of 1270
REJ09B0466-0100
Interrupt Request
Transmit Data Empty
Transmit End
Receive Data Full
STOP Recognition
NACK Detection
Arbitration Lost
Interrupt Request
2
C Bus Interface 2 (IIC2)
Abbreviation
TXI
TEI
RXI
NAKI
STPI
Interrupt Condition
(TDRE=1)
(TEND=1)
(RDRF=1)
(STOP=1)
{(NACKF=1)+(AL=1)}
•
•
•
•
(STIE=1)
(TIE=1)
(TEIE=1)
(RIE=1)
•
(NAKIE=1)
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