DS1744WP-120+ Maxim Integrated Products, DS1744WP-120+ Datasheet - Page 2

• Manufacturer Part Number: DS1744WP-120+
• Description: IC RTC RAM Y2K 3.3V 120NS 34-PCM
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/NVSRAM/Y2Kr

Specifications of DS1744WP-120+

• Memory Size: 256K (32K 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: 34-PowerCap™ Module
• Function: Clock/Calendar/NV Timekeeping RAM
• Rtc Memory Size: 32768 Byte
• Supply Voltage (max): 3.63 V
• Supply Voltage (min): 2.97 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Rtc Bus Interface: Parallel
• Supply Current: 75 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN DESCRIPTION
EDIP
10
21
23
24
25
26
11
12
13
15
16
17
18
19
14
20
22
27
28
—
—
—
1
2
3
4
5
6
7
8
9
PIN
PowerCap
1, 2, 3, 33,
32
30
25
24
23
22
21
20
19
18
28
29
27
26
31
16
15
14
13
12
11
10
17
34
9
8
7
6
5
4
X1, X2,
NAME
GND
V
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
N.C.
RST
A14
A12
A10
A11
A13
WE
V
CE
OE
A7
A6
A5
A4
A3
A2
A1
A0
A9
A8
BAT
CC
Address Input
Data Input/Output
Ground
Active-Low Chip-Enable Input
Active-Low Output-Enable Input
Active-Low Write-Enable Input
Power-Supply Input
Active-Low Reset Output, Open Drain. Requires a pullup resistor for
proper operation.
No Connection
Crystal Connections, V
DS1744/DS1744P Y2K-Compliant, Nonvolatile Timekeeping RAMs
2 of 16
BAT
Battery Connection
FUNCTION