HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 556
HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
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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 receive, STOP recognition, and arbitration lost/overrun error. Table 16.3 shows the
contents of each interrupt request.
Table 16.3 Interrupt Requests
When the interrupt condition described in table 16.3 is 1, the CPU executes an interrupt exception
handling. Interrupt sources should be cleared in the exception handling. The TDRE and TEND
bits are automatically cleared to 0 by writing the transmit data to ICDRT. The RDRF bit is
automatically cleared to 0 by reading ICDRR. The TDRE bit is set to 1 again at the same time
when the transmit data is written to ICDRT. When the TDRE bit is cleared to 0, then an excessive
data of one byte may be transmitted.
Rev. 4.00 Sep. 14, 2005 Page 506 of 982
REJ09B0023-0400
Interrupt Request
Transmit data Empty
Transmit end
Receive data full
STOP recognition
NACK receive
Arbitration lost/
overrun error
Interrupt Request
2
C Bus Interface 2 (IIC2)
Abbreviation Interrupt Condition
TXI
TEI
RXI
STPI
NAKI
(TDRE=1)
(TEND=1)
(RDRF=1)
(STOP=1)
{(NACKF=1)+(AL=1)}
(NAKIE=1)
•
•
•
•
(STIE=1)
(TIE=1)
(TEIE=1)
(RIE=1)
•
I
2
C Mode
Clocked
Synchronous
Mode
×
×
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