MB85RC16 Datasheet, PDF (9/20 Pages) Fujitsu Component Limited. – Memory FRAM 16 K (2 K x 8) Bit I2C

MB85RC16
■ COMMAND
• Byte Write
If the device address word (R/W “0” input) is sent after the start condition, an ACK responds from the slave.
After this ACK, write memory addresses and write data are sent in the same way, and the write ends by
generating a stop condition at the end.
S 1 0 1 0 A2 A1 A0 0 A
Address
Low 8bits
A
Write
Data 8bits
AP
XXX
MSB
X X X X X X XX
LSB
Access from master
Access from slave
S Start Condition
P Stop Condition
A ACK (SDA is the "L" level)
• Page Write
If data is continuously sent after the following address when the same command (expect stop condition) as
Byte Write was sent, a page write is performed. The memory address rolls over to first memory address
(000H) at the end of the address. Therefore, if more than 2 Kbytes are sent, the data is overwritten in order
starting from the start of the memory address that was written first.
S 1 0 1 0 A2 A1 A0 0 A
Address
Low 8bits
A
Write
Data 8bits
A
Write
Data
... A P
Access from master
Access from slave
S Start Condition
P Stop Condition
A ACK (SDA is the "L" level)
DS501-00001-2v0-E
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