DS1501WS Maxim Integrated Products, DS1501WS Datasheet - Page 6
DS1501WS
Manufacturer Part Number
DS1501WS
Description
IC RTC WDOG Y2KC 3.3V 28-SOIC
Manufacturer
Maxim Integrated Products
Type
Clock/Calendar/WDT/NVSRAM/Y2Kr
Datasheet
1.DS1501WE.pdf
(22 pages)
Specifications of DS1501WS
Memory Size
2K (256 x 8)
Time Format
HH:MM:SS (24 hr)
Date Format
YY-MM-DD-dd
Interface
Parallel
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
28-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
DS1501WS
Manufacturer:
DS
Quantity:
20 000
Part Number:
DS1501WS+
Manufacturer:
DALLAS
Quantity:
20 000
Company:
Part Number:
DS1501WSN
Manufacturer:
MAXIM
Quantity:
12
Part Number:
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Manufacturer:
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Quantity:
20 000
Part Number:
DS1501WSN+TR
Manufacturer:
MAXIM/美信
Quantity:
20 000
Company:
Part Number:
DS1501WSN/TR
Manufacturer:
Legerity
Quantity:
63
Figure 4. Burst Mode Timing Waveform
POWER-UP/DOWN CHARACTERISTICS
(T
CAPACITANCE
(T
AC TEST CONDITIONS
O E , W E , O R C E
CE or WE at V
V
V
V
V
Expected Data-Retention Time
(Oscillator On)
Capacitance on All Input Pins
Capacitance on IRQ, PWR, RST, and DQ
Pins
A
A
CC
CC
CC
PF
= +25°C)
= +25°C)
(W) 25pF + 1 TTL Gate
(Y) 50pF + 1TTL Gate
D Q 0 – D Q 7
to RST High
Fall Time: V
Fall Time: V
Rise Time: V
OUTPUT LOAD
A 0 – A 4
PARAMETER
PARAMETER
PARAMETER
IH
PF(MAX)
PF(MIN)
Before Power-Fail
PF(MIN)
to V
to V
to V
SO
PF(MIN)
PF(MAX)
0V to 3.0V for 5V
INPUT PULSE
1 3 h
P W
operation
LEVELS
L O W
SYMBOL
SYMBOL
SYMBOL
P W
t
C
C
t
t
REC
t
t
t
PF
FB
DR
R
F
IN
IO
H IG H
6 of 22
TIMING MEASUREMENT
(Note 9)
REFERENCE LEVELS
CONDITIONS
CONDITIONS
CONDITIONS
DS1501/DS1511 Y2KC Watchdog Real-Time Clocks
Output: 1.5V
Input: 1.5V
MIN
MIN
MIN
300
10
35
10
0
0
TYP
TYP
TYP
INPUT PULSE RISE
AND FALL TIMES
MAX
MAX
MAX
200
10
10
5ns
UNITS
UNITS
UNITS
Years
ms
pF
pF
μs
μs
μs
μs