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FM25640 数据表(PDF) 11 Page - Ramtron International Corporation

部件名 FM25640
功能描述  64Kb FRAM Serial Memory
Download  14 Pages
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制造商  RAMTRON [Ramtron International Corporation]
网页  http://www.ramtron.com
标志 RAMTRON - Ramtron International Corporation

FM25640 数据表(HTML) 11 Page - Ramtron International Corporation

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FM25640
Rev. 2.1
Aug 2003
11 of 14
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
tOH
Output 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 Hold Time
30
ns
tSU
Data Setup Time
20
ns
tHS
/Hold Setup Time
70
ns
tHH
/Hold Hold Time
40
ns
tHZ
/Hold Low to Hi-Z
100
ns
2
tLZ
/Hold High to Data Active
50
ns
2
Notes
1.
Rise and fall times measured between 10% and 90% of waveform.
2.
Characterized but not 100% tested in production.
Capacitance TA = 25° C, f=1.0 MHz, VDD = 5V
Symbol
Parameter
Max
Units
Notes
CO
Output capacitance (SDA)
8
pF
1
CI
Input capacitance
6
pF
1
Notes
1.
This parameter is periodically sampled 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
VDD*0.5
Equivalent AC Load Circuit
Data Retention VDD = 4.5V to 5.5V unless otherwise specified
Parameter
Min
Units
Notes
Data Retention
10
Years


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