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FM25L256B датащи(PDF) 10 Page - Ramtron International Corporation

номер детали FM25L256B
подробное описание детали  256Kb FRAM Serial 3V Memory
Download  14 Pages
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производитель  RAMTRON [Ramtron International Corporation]
домашняя страница  http://www.ramtron.com
Logo RAMTRON - Ramtron International Corporation

FM25L256B датащи(HTML) 10 Page - Ramtron International Corporation

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FM25L256B
Rev. 3.0
July 2007
Page 10 of 14
AC Parameters (TA = -40° C to +85° C, VDD = 2.7V to 3.6V, CL = 30pF)
Symbol
Parameter
Min
Max
Units
Notes
fCK
SCK Clock Frequency
0
20
MHz
tCH
Clock High Time
22
ns
1
tCL
Clock Low Time
22
ns
1
tCSU
Chip Select Setup
10
ns
tCSH
Chip Select Hold
10
ns
tOD
Output Disable Time
20
ns
2
tODV
Output Data Valid Time
22
ns
tOH
Output Hold Time
0
ns
tD
Deselect Time
60
ns
tR
Data In Rise Time
50
ns
2,3
tF
Data In Fall Time
50
ns
2,3
tSU
Data Setup Time
5
ns
tH
Data Hold Time
5
ns
tHS
/Hold Setup Time
10
ns
tHH
/Hold Hold Time
10
ns
tHZ
/Hold Low to Hi-Z
20
ns
2
tLZ
/Hold High to Data Active
20
ns
2
Notes
1.
tCH + tCL = 1/fCK.
2.
This parameter is characterized but not 100% tested.
3.
Rise and fall times measured between 10% and 90% of waveform.
Power Cycle Timing (TA = -40° C to +85° C, VDD = 2.7V to 3.6V)
Symbol
Parameter
Min
Max
Units
Notes
tPU
Power Up (VDD min) to First Access (/CS low)
10
-
ms
tPD
Last Access (/CS high) to Power Down (VDD min)
0
-
µs
tVR
VDD Rise Time
50
-
µs/V
1
tVF
VDD Fall Time
- For VDD above 2.0V
- For VDD below 2.0V
50
1
-
-
µs/V
ms/V
1
Notes
1.
Slope measured at any point on VDD waveform.
Capacitance (TA = 25° C, f=1.0 MHz, VDD = 3.3V)
Symbol
Parameter
Min
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
5 ns
Input and output timing levels
0.5 VDD
Output Load Capacitance
30 pF


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