HD64F2149 Datasheet, PDF (520/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

Bit 6—Wait Insertion Bit (WAIT): Selects whether to insert a wait between the transfer of data
and the acknowledge bit, in master mode with the I²C bus format. When WAIT is set to 1, after
the fall of the clock for the final data bit, the IRIC flag is set to 1 in ICCR, and a wait state begins
(with SCL at the low level). When the IRIC flag is cleared to 0 in ICCR, the wait ends and the
acknowledge bit is transferred. If WAIT is cleared to 0, data and acknowledge bits are transferred
consecutively with no wait inserted.
The IRIC flag in ICCR is set to 1 on completion of the acknowledge bit transfer, regardless of the
WAIT setting.
The setting of this bit is invalid in slave mode.
Bit 6
WAIT
0
1
Description
Data and acknowledge bits transferred consecutively
Wait inserted between data and acknowledge bits
(Initial value)
486