HD6432160 RENESAS [Renesas Technology Corp], HD6432160 Datasheet - Page 461
HD6432160
Manufacturer Part Number
HD6432160
Description
Hitachi 16-Bit Single-Chip Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6432160.pdf
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Bit Bit Name
5
ICDRF
Initial Value R/W
0
R
Description
Receive Data Read Request Flag
Indicates the ICDR (ICDRR) status in receive mode.
0: Indicates that the data has been already read from
ICDR (ICDRR) or ICDR is initialized.
1: Indicates that data has been received successfully and
transferred from ICDRS to ICDRR, and the data is ready to
be read out.
[Setting conditions]
When ICDRF is set due to the condition (2) above, ICDRF
is temporarily cleared to 0 when ICDR (ICDRR) is read;
however, since data is transferred from ICDRS to ICDRR
immediately, ICDRF is set to 1 again.
Note that ICDR cannot be read successfully in transmit
mode (TRS = 1) because data is not transferred from
ICDRS to ICDRR. Be sure to read data from ICDR in
receive mode (TRS = 0).
(1) When data is received successfully while ICDRF = 0
(2) When ICDR is read successfully in receive mode after
[Clearing conditions]
When data is received successfully and transferred
from ICDRS to ICDRR.
When ICDR (ICDRR) is read.
When 0 is written to the ICE bit.
When the IIC is internally initialized using the CLR3 to
CLR0 bits in DDCSWR.
(at the rise of the 9th clock pulse).
data was received while ICDRF = 1.
Rev. 2.0, 08/02, page 421 of 788
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