DS1501 Maxim, DS1501 Datasheet - Page 10
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DS1501
Manufacturer Part Number
DS1501
Description
The DS1501/DS1511 are full-function, year 2000-compliant real-time clock/calendars (RTCs) with an RTC alarm, watchdog timer, power-on reset, battery monitors, 256 bytes NV SRAM, and a 32
Manufacturer
Maxim
Datasheet
1.DS1501.pdf
(22 pages)
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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