M16C6KA_15 Datasheet, PDF (186/270 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER Description

M16C/6KA Group
MULTI-MASTER I²C-BUS Interface
(2) Generation of RESTART condition
After 1 byte data transfer, a RESTART condition standby can be set up by writing “E016” to I²C
status register and the SDA pin will be released. Wait in software until SDA become “H” stable and then
owing to writing to I²C data shift register a START condition trigger will be generated. Fig.GC-25 shows
the restart condition generation timing.
SCL
8 clock
ACK
clock
SDA
S1i writing signal
( Set the standby of start condition)
S0i writing signal
(START condition trigger generation)
Insert software wait
Fig.GC-25 The time of generation of RESTART condition
Rev.1.00 Jul 16, 2004 page 184 of 266
REJ03B0100-0100Z