Rainbow Electronics DS1511 - Manual (Page 19)

DS1501/DS1511 Y2K Watchdog Real-Time Clock
19 of 20
WE only when register 13h is being accessed (Figure 4). The address pointer wraps around after the last address
is accessed.
SELECTOR GUIDE
PART
NOMINAL
SUPPLY (V)
TOP MARK
DS1501YN 5 DS1501YN
DS1501YEN 5 DS1501YEN
DS1501YSN 5 DS1501YSN
DS1501WN 3.3 DS1501WN
DS1501WEN 3.3 DS1501WEN
DS1501WSN 3.3 DS1501WSN
DS1511Y 5 DS1511Y
DS1511W 3.3 DS1511W
PIN CONFIGURATIONS (continued)
720-MIL MODULE
N.C.
N.C.
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
PWR
RST
IRQ
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
SQW
N.C.
DQ7
DQ6
DQ5
DQ4
DQ3
CE
OE
KS
WE
V
BAUX
N.C.
CC
V
Dallas
Semiconductor
DS1511
15
16
17
18
19
20
21
22
23
24
25
26
27
28 1
2
3
4
5
6
7
8
9
10
11
12
13
14
OE
A3
SQW
KS
V BAUX
V
BAT
WE
V CC
X1
X2
A4
IRQ
RST
PWR
GND
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
A0
A1
A2
GND
DQ7
CE
TSOP
Dallas
Semiconductor
DS1501
TOP VIEW