DS1501WSN+ Maxim Integrated, DS1501WSN+ Datasheet - Page 10
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DS1501WSN+
Manufacturer Part Number
DS1501WSN+
Description
Real Time Clock
Manufacturer
Maxim Integrated
Series
DS1501, DS1511r
Datasheet
1.DS1501YSTR.pdf
(22 pages)
Specifications of DS1501WSN+
Rohs
yes
Function
Clock, Calendar, Alarm, Watchdog Timekeeper
Rtc Bus Interface
Parallel
Time Format
HH
Rtc Memory Size
256 B
Supply Voltage - Max
3.6 V
Supply Voltage - Min
3 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Package / Case
SOIC-28
Part # Aliases
90-1501W+SN0
Figure 8. Block Diagram
Figure 9. Typical Crystal Layout
LOCAL GROUND PLANE (LAYER 2)
X1
X2
V
V
GND
V
KS
BAUX
BAT
BAT
CRYSTAL
32.768kHz CLOCK
OSCILLATOR
WRITE PROTECTION,
POWER CONTROL
AND POWER-ON
RESET
CLOCK ALARM AND WATCHDOG
GND
X1
X2
COUNTDOWN
DS1501/DS1511
10 of 22
DS1501/DS1511 Y2KC Watchdog Real-Time Clocks
CLOCK AND CONTROL
REGISTERS
NV SRAM
256 x 8
16 X 8
IRQ
SQW
DQ0–DQ7
PWR
RST
CE
WE
A0–A4
OE