h8s-2111b Renesas Electronics Corporation., h8s-2111b Datasheet - Page 337

• Manufacturer Part Number: h8s-2111b
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family / H8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Bit
5
Bit Name
ICDRF
Initial
Value
0
R/W
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
1: Indicates that data has been received successfully
[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 =
(2) When ICDR is read successfully in receive mode
[Clearing conditions]
ICDR (ICDRR) or ICDR is initialized.
and transferred from ICDRS to ICDRR, and the data
is ready to be read out.
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.
0 (at the rise of the 9th clock pulse).
after data was received while ICDRF = 1.
Rev. 1.00, 05/04, page 303 of 544