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FM25H20 датащи(PDF) 11 Page - Ramtron International Corporation

номер детали FM25H20
подробное описание детали  2Mb Serial 3V F-RAM Memory
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производитель  RAMTRON [Ramtron International Corporation]
домашняя страница  http://www.ramtron.com
Logo RAMTRON - Ramtron International Corporation

FM25H20 датащи(HTML) 11 Page - Ramtron International Corporation

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FM25H20 - 2Mb SPI FRAM
Rev. 2.2
Sept. 2010
Page 11 of 15
AC Parameters (TA = -40
°C to + 85°C, VDD = 2.7V to 3.6V, CL = 30pF)
Symbol
Parameter
Min
Max
Units
Notes
fCK
C Clock Frequency
0
40
MHz
tCH
Clock High Time
11
ns
1
tCL
Clock Low Time
11
ns
1
tSU
Chip Select Setup
10
ns
tSH
Chip Select Hold
10
ns
tOD
Output Disable Time
12
ns
2
tODV
Output Data Valid Time
9
tOH
Output Hold Time
0
ns
tD
Deselect Time
40
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.
AC Test Conditions
Input Pulse Levels
10% and 90% of VDD
Input rise and fall times
3 ns
Input and output timing levels
0.5 VDD
Output Load Capacitance
30 pF
Capacitance (TA = 25
° C, f=1.0 MHz, VDD = 3.3V)
Symbol
Parameter
Min
Max
Units
Notes
CO
Output Capacitance (Q)
-
8
pF
1
CI
Input Capacitance
-
6
pF
1
Notes
1. This parameter is characterized and not 100% tested.
Data Retention (TA = -40
°C to +85°C)
Symbol
Parameter
Min
Units
Notes
TDR
Data Retention
10
Years


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