DS1647-120 Maxim Integrated Products, DS1647-120 Datasheet - Page 2

• Manufacturer Part Number: DS1647-120
• Description: Real Time Clock
• Manufacturer: Maxim Integrated Products

Specifications of DS1647-120

• Function: Clock, Calendar, NV Timekeeping RAM
• Rtc Memory Size: 524288 B
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Rtc Bus Interface: Parallel
• Package / Case: eDIP
• Time Format: HH:MM:SS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN DESCRIPTION
PDIP
10
11
12
23
25
26
27
28
30
31
13
14
15
17
18
19
20
21
16
22
24
29
32
—
—
—
1
2
3
4
5
6
7
8
9
PIN
PowerCap
34
32
30
25
24
23
22
21
20
19
18
28
29
27
26
31
33
16
15
14
13
12
11
10
17
3
2
9
8
7
6
5
4
1
X1, X2,
NAME
GND
V
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
PFO
N.C.
A18
A16
A14
A12
A10
A11
A13
A17
A15
V
WE
OE
CE
A7
A6
A5
A4
A3
A2
A1
A0
A9
A8
BAT
CC
Address Input
Data Input/Output
Data Input/Output
Ground
Active-Low Chip Enable
Active-Low Output Enable
Active-Low Write Enable
Power-Supply Input
Active-Low Power-Fail Output, Open Drain. This pin requires a
pullup resistor for proper operation.
No Connection
Crystal Connections and Battery Connection
2 of 12
FUNCTION
DS1647/DS1647P