FM24W256 Ramtron, FM24W256 Datasheet - Page 7

• Manufacturer Part Number: FM24W256
• Description: 256Kb Wide Voltage Serial F-RAM
• Manufacturer: Ramtron

www.DataSheet.co.kr
loaded into the internal address latch. After the
FM24W256 acknowledges the address, the bus
master issues a start condition. This simultaneously
aborts the write operation and allows the read
Rev. 1.3
July 2011
By FM24W256
By Master
By FM24W256
By Master
Start
S
Slave Address
By FM24W256
By Master
Start
S
0
A
Slave Address
X
Start
Address
S
Address MSB
Address
Figure 9. Selective (Random) Read
Slave Address
Figure 7. Current Address Read
Acknowledge
Address
1
Figure 8. Sequential Read
A
A
Acknowledge
Address LSB
Acknowledge
Data Byte
1
A
command to be issued with the slave address LSB set
to a “1”. The operation is now a current address read.
Acknowledge
Data Byte
FM24W256 - 256Kb Wide Voltage I2C F-RAM
A
Data
Start
S
A
Data
Slave Address
Acknowledge
Address
Data Byte
No
1
P
1
Acknowledge
A
No
1 P
Stop
Data Byte
Data
Acknowledge
Stop
No
1 P
Page 7 of 13
Stop
Datasheet pdf - http://www.DataSheet4U.net/