DS1647 데이터 시트보기 (PDF) - Dallas Semiconductor -> Maxim Integrated
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DS1647 Datasheet PDF : 11 Pages
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AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL MIN
Read Cycle Time
Address Access Time
CE Access Time
tRC
120
tAA
tCEA
CE Data Off Time
tCEZ
Output Enable Access Time
Output Enable Data Off Time
Output Enable to DQ Low-Z
CE to DQ Low-Z
tOEA
tOEZ
tOEL
5
tCEL
5
Output Hold from Address
Write Cycle Time
Address Setup Time
CE Pulse Width
tOH
5
tWC
120
tAS
0
tCEW
100
Address Hold from End of Write
tAH1
5
tAH2
30
Write Pulse Width
tWEW
75
WE Data Off Time
tWEZ
WE or CE Inactive Time
tWR
10
Data Setup Time
Data Hold Time High
tDS
85
tDH1
0
tDH2
25
AC TEST CONDITIONS
Input Levels:
0V to 3V
Transition Times: 5 ns
DS1647/DS1647P
(Over the Operating Range)
TYP MAX UNITS NOTES
ns
120
ns
120
ns
40
ns
100
ns
40
ns
ns
ns
ns
ns
ns
ns
ns
5
ns
6
ns
40
ns
ns
ns
ns
5
ns
6
CAPACITANCE
PARAMETER
Capacitance on all pins (except DQ)
Capacitance on DQ pins
SYMBOL
CI
CDQ
MIN
TYP
MAX
7
10
(tA = 25°C)
UNITS NOTES
pF
pF
AC ELECTRICAL CHARACTERISTICS
(POWER-UP/DOWN TIMING)
PARAMETER
SYMBOL
CE or WE at VIH before Power-Down
tPD
VPF (Max) to VPF (Min) VCC Fall Time
tF
VPF (Min) to VSO VCC Fall Time
tFB
VSO to VPF (Min) VCC Rise Time
tRB
VPF (Min) to VPF (Max) VCC Rise Time
tR
Power-Up
tREC
Expected Data Retention Time
tDR
(Oscillator On)
MIN
0
300
10
1
0
15
10
(Over the Operating Range)
TYP MAX UNITS NOTES
ms
ms
ms
ms
ms
35
ms
years
4
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