HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 457
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HD6432160
Manufacturer Part Number
HD6432160
Description
Hitachi 16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6432160.pdf
(829 pages)
- Current page: 457 of 829
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Note:* Only 0 can be written to clear the flag.
Bit Bit Name
0
ACKB
Initial Value R/W
0
R/W
Description
Acknowledge Bit
Stores acknowledge data.
Transmit mode:
[Setting condition]
When 1 is received as the acknowledge bit when ACKE=1
in transmit mode
[Clearing conditions]
Receive mode:
0: Returns 0 as acknowledge data after data reception
1: Returns 1 as acknowledge data after data reception
When this bit is read, the value loaded from the bus line
(returned by the receiving device) is read in transmission
(when TRS = 1). In reception (when TRS = 0), the value set
by internal software is read.
When this bit is written, acknowledge data that is returned
after receiving is rewritten regardless of the TRS value. If
the ICSR register bit is written using bit-manipulation
instructions, the acknowledge data should be re-set since
the acknowledge data setting is rewritten by the ACKB bit
reading value.
Write the ACKE bit to 0 to clear the ACKB flag to 0, before
transmission is ended and a stop condition is issued in
master mode, or before transmission is ended and SDA is
released to issue a stop condition by a master device.
When 0 is received as the acknowledge bit when
ACKE=1 in transmit mode
When 0 is written to the ACKE bit
Rev. 2.0, 08/02, page 417 of 788
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