MB85RC256V

10

DS501-00017-11v2-E

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SOFTWARE RESET SEQUENCE OR COMMAND RETRY

In case the malfunction has occurred after power on, the master side stopped the I2C communication during

processing, or unexpected malfunction has occurred, execute the following (1) software recovery sequence

just before each command, or (2) retry command just after failure of each command.

(1) Software Reset Sequence

Since the slave side may be outputting “L” level, do not force to drive “H” level, when the master side drives

the SDA port. This is for preventing a bus conflict. The additional hardware is not necessary for this software

reset sequence.

(2) Command Retry

Command retry is useful to recover from failure response during I2C communication.

SCL

SDA

9 set of “Start Conditions and one “1” data”

Send “Start Condition and one data “1”” .

Repeat these 9 times just before Write or Read command.

Hi-Z state by pull up Resistor