FM24CL64B-GA RAMTRON [Ramtron International Corporation], FM24CL64B-GA Datasheet - Page 7

• Manufacturer Part Number: FM24CL64B-GA
• Description: 64Kb Serial 3V F-RAM Memory
• Manufacturer: RAMTRON [Ramtron International Corporation]

To perform a selective read, the bus master sends out
the slave address with the LSB set to 0. This specifies
a write operation. According to the write protocol,
the bus master then sends the address bytes that are
loaded into the internal address latch. After the
FM24CL64B acknowledges the address, the bus
Rev. 1.1
June 2011
By Master
By F-RAM
By F-RAM
By Master
Start
S
Slave Address
By F-RAM
By Master
Start
S
0
A
Slave Address
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
FM24CL64B - 64Kb 3V I2C F-RAM (Automotive Temp.)
A
master issues a start condition. This simultaneously
aborts the write operation and allows the read
command to be issued with the slave address LSB set
to a „1‟. The operation is now a current address read.
Acknowledge
Data Byte
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
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