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DS1501YSN Datasheet(PDF) 4 Page - Dallas Semiconductor

Part # DS1501YSN
Description  Y2K-Compliant Watchdog Real-Time Clocks
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Manufacturer  DALLAS [Dallas Semiconductor]
Direct Link  https://www.maximintegrated.com/en.html
Logo DALLAS - Dallas Semiconductor

DS1501YSN Datasheet(HTML) 4 Page - Dallas Semiconductor

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DS1501/DS1511 Y2KC Watchdog Real-Time Clocks
4 of 20
AC OPERATING CHARACTERISTICS
(VCC = 3.3V ±10%, TA = 0°C to +70°C; VCC = 3.3V ±10%, TA = -40°C to +85°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Read Cycle Time
tRC
120
ns
Address Access Time
tAA
120
ns
CE to DQ Low-Z
tCEL
(Note 8)
5
ns
CE Access Time
tCEA
120
ns
CE Data Off Time
tCEZ
(Note 8)
40
ns
OE to DQ Low-Z (0°C to +85°C)
tOEL
(Note 8)
5
ns
OE to DQ Low-Z (-40°C to 0°C)
tOEL
(Note 8)
2
ns
OE Access Time
tOEA
100
ns
OE Data-Off Time
tOEZ
(Note 8)
35
ns
Output Hold from Address
tOH
5
ns
Write Cycle Time
tWC
120
ns
Address Setup Time
tAS
0
ns
WE Pulse Width
tWEW
100
ns
CE Pulse Width
tCEW
110
ns
Data Setup Time
tDS
80
ns
Data Hold Time
tDH
5
ns
Address Hold Time
tAH
5
ns
WE Data-Off Time
tWEZ
(Note 8)
40
ns
Write Recovery Time
tWR
15
ns
Pulse Width,
OE, WE, or CE High
PWHIGH
40
ns
Pulse Width,
OE, WE, or CE Low
PWLOW
100
ns
Figure 1. Read Cycle Timing
t
RC
t
CEA
tOEA
tCEL
tOEL
tOH
t
OEZ
t
AA
VALID
DQ0-DQ7
OE
CE
A0–A4
t
CEZ


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