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FM25040B 数据表(PDF) 10 Page - Ramtron International Corporation

部件名 FM25040B
功能描述  4Kb Serial 5V F-RAM Memory
PDF  13 Pages
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制造商  RAMTRON [Ramtron International Corporation]
网页  http://www.ramtron.com
标志 RAMTRON - Ramtron International Corporation

FM25040B 数据表(HTML) 10 Page - Ramtron International Corporation

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FM25040B - 4Kb 5V SPI F-RAM
Rev. 1.2
Feb. 2011
Page 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
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
20
ns
2
tODV
Output Data Valid
20
ns
tOH
Output Hold
0
ns
tD
Deselect Time
60
ns
tR
Data In Rise Time
50
ns
1,3
tF
Data In Fall Time
50
ns
1,3
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.
Rise and fall times measured between 10% and 90% of waveform.
3.
This parameter is characterized and not 100% tested.
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 periodically sampled 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
Data Retention
Symbol
Parameter
Min
Max
Units
Notes
TDR
@
+85ºC
10
-
Years
@
+80ºC
19
-
Years
@
+75ºC
38
-
Years



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