參數(shù)資料
型號(hào): FM25256-G
廠商: Electronic Theatre Controls, Inc.
英文描述: 256Kb FRAM Serial 5V Memory
中文描述: 的256Kb FRAM的串行5V的記憶
文件頁(yè)數(shù): 10/13頁(yè)
文件大?。?/td> 120K
代理商: FM25256-G
AC Parameters
(T
A
= -40
°
C to + 85
°
C, V
DD
= 4.0V to 5.5V, C
L
= 30pF)
Symbol
Parameter
f
CK
SCK Clock Frequency
t
CH
Clock High Time
t
CL
Clock Low Time
t
CSU
Chip Select Setup
t
CSH
Chip Select Hold
t
OD
Output Disable Time
t
ODV
Output Data Valid Time
t
OH
Output Hold Time
t
D
Deselect Time
t
R
Data In Rise Time
t
F
Data In Fall Time
t
SU
Data Setup Time
t
H
Data Hold Time
t
HS
/Hold Setup Time
t
HH
/Hold Hold Time
t
HZ
/Hold Low to Hi-Z
t
LZ
/Hold High to Data Active
Notes
1.
t
CH
+ t
CL
= 1/f
CK
.
2.
This parameter is characterized but not 100% tested.
3.
Rise and fall times measured between 10% and 90% of waveform.
Power Cycle Timing
(T
A
= -40
°
C to + 85
°
C, V
DD
= 4.0V to 5.5V)
Symbol
Parameter
t
PU
Power Up (V
DD
min) to First Access (/CS low)
t
PD
Last Access (/CS high) to Power Down (V
DD
min)
t
VR
V
DD
Rise Time
t
VF
V
DD
Fall Time
Capacitance
(T
A
= 25
°
C, f=1.0 MHz, V
DD
= 5.0V)
Symbol
Parameter
C
O
Output capacitance (SO)
C
I
Input capacitance
Notes
1.
This parameter is characterized and not 100% tested.
2.
Slope measured at any point on V
DD
waveform.
AC Test Conditions
Input Pulse Levels
10% and 90% of V
DD
Input rise and fall times
5 ns
Input and output timing levels
0.5 V
DD
Output Load Capacitance
30 pF
FM25256
Rev. 2.0
Apr. 2005
Page 10 of 13
Min
0
18
18
10
10
0
60
5
5
10
10
Max
25
15
15
50
50
20
15
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
1
1
2
1,3
1,3
2
2
Min
10
0
50
100
Max
-
-
-
Units
ms
μ
s
μ
s/V
μ
s/V
Notes
1,2
1,2
Min
-
-
Max
8
6
Units
pF
pF
Notes
1
1
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