M16C65 Datasheet, PDF (636/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
25. Multi-Master I²C-bus Interface
25.3.4 Generation of Restart Condition
Follow the procedure below to generate a restart condition when one-byte data is transmitted/received.
(1) Write E0h to the S10 register. (Start condition standby state. SDAMM pin becomes high-
impedance.)
(2) Wait until the SDAMM pin level becomes high.
(3) Write a slave address to the S00 register (a start condition trigger generated)
Figure 25.9 shows Restart Condition Generation Timing.
SCLMM
8
SDAMM
9
(ACK clock)
Write signal to the S10 register
(Start condition standby)
Write signal to the S00 register
(Start condition trigger generation)
Figure 25.9 Restart Condition Generation Timing
Wait until the SDAMM becomes high level.
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
Page 601 of 791