參數(shù)資料
型號: PUMA68S4000/A-45
元件分類: SRAM
英文描述: 128K X 32 MULTI DEVICE SRAM MODULE, 45 ns, QMA68
封裝: PLASTIC, LCC-68
文件頁數(shù): 4/9頁
文件大?。?/td> 134K
代理商: PUMA68S4000/A-45
PUMA 68S4000/A - 020/025/35/45
ISSUE 4.4 : December 1999
4
Capacitance
Capacitance (V
CC=5V±10%,TA=25
oC)
Note: Capacitance calculated, not measured.
Parameter
Symbol
Test Condition
min
typ
max
Unit
Input Capacitance Address,OE,WE
C
IN1
V
IN =0V
-
34
pF
Output Capacitance 8-bit mode (worst case)
C
I/O
V
I/O=0V
-
42
pF
* Input pulse levels: 0V to 3.0V
* Input rise and fall times: 3ns
* Input and Output timing reference levels: 1.5V
* Output load: see diagram
* V
CC=5V±10%
AC Test Conditions
Output Load
Operation Truth Table
CS1 CS2 CS3 CS4
OE
WE
SUPPLY CURRENT
MODE
LH
H
X
L
ICC8
Write D0~7
HL
H
X
L
ICC8
Write D8~15
HH
L
H
X
L
ICC8
Write D16~23
HH
H
L
X
L
ICC8
Write D24~31
LL
H
X
L
ICC16
Write D0~15
HH
L
X
L
ICC16
Write D16~31
LL
L
X
L
ICC32
Write D0~31
LH
H
L
H
ICC8
Read D0~7
HL
H
L
H
ICC8
Read D8~15
HH
L
H
L
H
ICC8
Read D16~23
HH
H
L
H
ICC8
Read D24~31
LL
H
L
H
ICC16
Read D0~15
HH
L
H
ICC16
Read D16~31
LL
L
H
ICC32
Read D0~31
XX
X
H
ICC32/ICC16/ICC8
D0~31 High-Z
HH
H
X
ISB,ISB1
D0~31 Standby
Notes : H = VIH : L =VIL : X = VIH or VIL
Parameter
Symbol
Test Condition
min
typ
max
Unit
V
CC for Data Retention
V
DR
CS=V
CC-0.2V
2.0
-
V
Data Retention Current
I
CCDR1
(1)
V
CC = 2.0V, CS > VCC-0.2V, VIN >0V
-
2.2
mA
Data Retention Time
t
CDR
See Retention Waveform
0-
-
ns
Operation Recovery Time
t
R
See Retention Waveform
t
RC
--
ns
Low Vcc Data Retention Characteristics - L version only
166
30pF
I/O Pin
1.76V
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