FM25040A
Notes
AC Parameters (TA = -40° C to + 85° C, VDD = 4.5V to 5.5V unless otherwise specified)
Symbol
fCK
tCH
tCL
tCSU
tCSH
tOD
tODV
tOH
tD
Parameter
Min
0
22
22
10
10
Max
20
Units
MHz
ns
ns
ns
ns
ns
ns
ns
SCK Clock Frequency
Clock High Time
Clock Low Time
Chip Select Setup
Chip Select Hold
Output Disable
1
1
20
20
2
Output Data Valid
Output Hold
0
Deselect Time
60
ns
tR
tF
tSU
tH
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
ns
ns
ns
ns
ns
ns
ns
1,3
1,3
5
5
10
10
tHS
tHH
tHZ
tLZ
20
20
2
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
CO
CI
Parameter
Output Capacitance (SO)
Input Capacitance
Max
8
6
Units
pF
pF
Notes
1
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
Input and Output Timing Levels
Output Load Capacitance
5 ns
0.5 VDD
30 pF
Rev. 3.0
May 2006
Page 10 of 13
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
