參數(shù)資料
型號(hào): MF3257-LCDATXX
廠商: Mitsubishi Electric Corporation
英文描述: 8/16-bit Data Bus Static RAM Card
中文描述: 16位產(chǎn)品數(shù)據(jù)總線靜態(tài)存儲(chǔ)器卡
文件頁(yè)數(shù): 11/14頁(yè)
文件大?。?/td> 101K
代理商: MF3257-LCDATXX
MITSUBISHI MEMORY CARD
STATIC RAM CARDS
MITSUBISHI
ELECTRIC
11/14 Apr. 1999 Rev. 1.2
18. ELECTRICAL CHARACTERISTICS
BATTERY BACKUP
(Ta=0~55°C, unless otherwise noted)
Symbol
Parameter
Test conditions
Limits
Typ.
Unit
Min.
2.6
3.5
Vcc-0.1
Max.
V
BATT
Vi
(
CE
)
Back-up enable battery voltage
Card enable voltage
All pins open
3.5V
VCC
5.25V
0V
VCC
<
3.5V
V
V
Vcc
Vcc+0.1
3
3
3
5
3
5
9
30
30
30
50
30
50
90
64KB
128KB
256KB
512KB
1MB
2MB
4MB
64KB
128KB
256KB
512KB
1MB
2MB
4MB
All pins open,
V
BATT
=3V,
Ta=25°C
Battery back-up supply current
μ
A
Icc
(
Bup
)
All pins open,
V
BATT
=3V
Battery back-up supply current
μ
A
19. TIMING REQUIREMENTS
(Ta=0~55°C, unless otherwise noted)
Symbol
Parameter
Limits
Typ.
Min.
0.1
Max.
300
300
Tpr
tpf
tsu(Vcc)
trec(Vcc)
Power supply rise time
Power supply fall time
Setup time at power on
Recovery time at power off
ms
ms
ms
ns
3
20
1000
CARD INSERTION/REMOVAL TIMING DIAGRAM
V
CC
CE1#,
CE2#
t
rec(V
CC
)
t
pf
90%
V
IH
10%
V
CC
CE1#,
CE2#
t
su(V
CC
)
t
pr
90%
V
IH
10%
V
CC
MIN
V
CC
MIN
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