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FM25640-G Datasheet(PDF) 10 Page - Ramtron International Corporation

Part No. FM25640-G
Description  64Kb FRAM Serial Memory
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Maker  RAMTRON [Ramtron International Corporation]
Homepage  http://www.ramtron.com
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FM25640
Rev. 3.0
Mar. 2005
10 of 13
AC Parameters (TA = -40° C to + 85° C, VDD = 4.5V to 5.5V unless otherwise specified)
Symbol
Parameter
Min
Max
Units
Notes
fCK
SCK Clock Frequency
0
5.0
MHz
tCH
Clock High Time
90
ns
tCL
Clock Low Time
90
ns
tCSU
Chip Select Setup
90
ns
tCSH
Chip Select Hold
90
ns
tOD
Output Disable
100
ns
2
tODV
Output Data Valid
60
ns
3
tOH
Output Data Hold
0
ns
tD
Deselect Time
100
ns
tR
Data In Rise Time
1
µs
1,2
tF
Data In Fall Time
1
µs
1,2
tH
Data In Hold Time
30
ns
tSU
Data In Setup Time
20
ns
tHS
/HOLD Input Setup Time
70
ns
tHH
/HOLD Input Hold Time
40
ns
tHZ
/HOLD Low to Data Out Hi-Z
100
ns
2
tLZ
/HOLD High to Data Out Lo-Z
50
ns
2
Notes
1.
Rise and fall times measured between 10% and 90% of waveform.
2.
This parameter is characterized but not 100% tested.
3.
For Clock High Time tCH ≤ 100 ns, the parameter tODV is extended such that tCH + tODV ≤ 160 ns.
Capacitance (TA = 25° C, f=1.0 MHz, VDD = 5V)
Symbol
Parameter
Max
Units
Notes
CO
Output Capacitance (SO)
8
pF
1
CI
Input Capacitance
6
pF
1
Notes
1.
This parameter is characterized and not 100% tested.
AC Test Conditions
Input Pulse Levels
10% and 90% of VDD
Input rise and fall times
10 ns
Input and output timing levels
0.5 VDD
Output Load Capacitance
100 pF




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