FM25040B - 4Kb 5V SPI F-RAM
AC Parameters (TA = -40° C to + 85° C, VDD = 4.5V to 5.5V unless otherwise specified)
Symbol
fCK
tCH
tCL
Parameter
Min
0
Max
Units
MHz
ns
Notes
SCK Clock Frequency
Clock High Time
Clock Low Time
Chip Select Setup
Chip Select Hold
Output Disable
20
22
22
10
10
1
1
ns
tCSU
tCSH
tOD
tODV
tOH
tD
ns
ns
20
20
ns
2
Output Data Valid
Output Hold
ns
0
60
ns
Deselect Time
ns
tR
Data In Rise Time
Data In Fall Time
Data Setup Time
Data Hold Time
/Hold Setup Time
/Hold Hold Time
/Hold Low to Hi-Z
/Hold High to Data Active
50
50
ns
1,3
1,3
tF
ns
tSU
5
ns
tH
5
10
10
ns
tHS
ns
tHH
tHZ
tLZ
ns
20
20
ns
2
2
ns
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
CO
Parameter
Max
8
6
Units
pF
pF
Notes
1
1
Output Capacitance (SO)
Input Capacitance
CI
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
Input and Output Timing Levels
Output Load Capacitance
5 ns
0.5 VDD
30 pF
Data Retention
Symbol
Parameter
Min
Max
Units
Years
Years
Years
Notes
TDR
@
@
@
+85ºC
+80ºC
+75ºC
10
19
38
-
-
-
Rev. 1.2
Feb. 2011
Page 10 of 13
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
