FM25CL04_05 Datasheet, PDF (10/12 Pages) Ramtron International Corporation – 4Kb FRAM Serial 3V Memory

AC Parameters (T_A = -40° C to + 85° C, C_L = 30pF, V_DD = 2.7V to 3.65V unless otherwise specified)
Symbol Parameter
Min
Max Units Notes
f_CK
SCK Clock Frequency
0
20
MHz
t_CH
Clock High Time
22
ns
1
t_CL
Clock Low Time
22
ns
1
t_CSU
Chip Select Setup
10
ns
t_CSH
Chip Select Hold
10
ns
t_OD
Output Disable Time
20
ns
2
t_ODV
Output Data Valid Time
20
ns
t_OH
Output Hold Time
0
ns
t_D
Deselect Time
60
ns
t_R
Data In Rise Time
50
ns
1,3
t_F
Data In Fall Time
50
ns
1,3
t_SU
Data Setup Time
t_H
Data Hold Time
D ^tHS
/Hold Setup Time
t_HH
/Hold Hold Time
E t_HZ
/Hold Low to Hi-Z
t_LZ
/Hold High to Data Active
D _Notes
N ^{S 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.
E ^N _{Capacitance (TA = 25° C, f=1.0 MHz, VDD = 3.3V)}
M IG ^Symbol
Parameter
C_O
Output capacitance (SO)
M ^{S 4 CI}
Input capacitance
0 _Notes
O ^{E L 1. This parameter is characterized but not 100% tested.}
C ^{D 25 Data Retention (VDD = 2.7V to 3.65V)}
M _Parameter
Min
Max
E ^F Data Retention
10
-
R ^{W by} AC Test Conditions
E _{Input Pulse Levels}
d _{Input rise and fall times}
T _{N ce Input and output timing levels}
10% and 90% of V_DD
5 ns
30% and 70% of V_DD
5
ns
5
ns
10
ns
10
ns
20
ns
2
20
ns
2
Min
Max
Units Notes
-
8
pF
1
-
6
pF
1
Units
Years
Notes
Equivalent AC Load Circuit
1.3V
NOFOR _Repla ^Output
1100 Ω
30 pF
Rev. 3.1
May 2005
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