Fujitsu FR81S User Manual
CHAPTER 40: MULTI-FUNCTION SERIAL INTERFACE
8. Operation of I2C
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : MULTI-FUNCTION SERIAL INTERFACE
FUJITSU SEMICONDUCTOR CONFIDENTIAL
364
8.4. I
2
C Slave Mode
I
2
C slave mode is shown.
If the (repeated) start condition is detected and if a combination of ISBA register and ISMK register settings
match the received address, an ACK response is sent and the slave mode operation starts.
Notes:
⋅
The next data cannot be received because the bus error is detected (IBCR:BER=1) and the reception is
interrupted when the start condition is detected again, while transmitting the address data or bit2-bit9
(acknowledge bit) after the start condition is detected, at EIBCR:BEC=0.
⋅
In this case, after the interrupt flag (IBCR:INT) is cleared, the transmission processing of the start
condition is needed from the master again.
MB91520 Series
MN705-00010-1v0-E
1677