Product Summary

The DS1302ZN+T&R is a trickle-charge timekeeping chip. It contains a real-time clock/calendar and 31 bytes of static RAM. The DS1302ZN+T&R communicates with a microprocessor via a simple serial interface. The real-time clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with an AM/PM indicator. The DS1302ZN+T&R is the successor to the DS1202. In addition to the basic timekeeping functions of the DS1202, the DS1302ZN+T&R has the additional features of dual power pins for primary and backup power supplies, programmable trickle charger for VCC1, and seven additional bytes of scratchpad memory.

Parametrics

DS1302ZN+T&R absolute maximum ratings: (1)Voltage Range on Any Pin Relative to Ground: -0.5Vto +7.0V; (2)Operating Temperature Range, Commercial: 0 to +70℃; (3)Operating Temperature Range, Industrial (IND): -40 to +85℃; (4)Storage Temperature Range: -55 to +125℃; (5)Soldering Temperature (leads, 10 seconds): 260℃.

Features

DS1302ZN+T&R features: (1)Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100; (2)31 x 8 Battery-Backed General-Purpose RAM; (3)Serial I/O for Minimum Pin Count; (4)2.0V to 5.5V Full Operation; (5)Uses Less than 300nA at 2.0V; (6)Single-Byte or Multiple-Byte (Burst Mode) Data Transfer for Read or Write of Clock or RAM Data; (7)8-Pin DIP or Optional 8-Pin SO for Surface Mount; (8)Simple 3-Wire Interface; (9)TTL-Compatible (VCC = 5V); (10)Optional Industrial Temperature Range: -40 to +85℃; (11)DS1202 Compatible ; (12)Underwriters Laboratories (UL) Recognized.

Diagrams

DS1302ZN+T&R block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
DS1302ZN+T&R
DS1302ZN+T&R
Maxim Integrated Products
Real Time Clock Trickle-Charge Timekeeping Chip
Data Sheet
0-2090: $0.89
2090-2500: $0.89
Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
DS1300
DS1300
Other

Data Sheet
Negotiable 
DS1300-3
DS1300-3
Emerson / Astec Power
Linear and Switching Power Supplies 12V output, 1300W 2U x 3U x 7.5"
Data Sheet
0-4: $296.74
4-10: $285.51
10-25: $269.47
DS1301-7R
DS1301-7R

EURO-CASSETTE 100W 12V
Data Sheet
0-5: $629.64
DS1302
DS1302
Maxim Integrated Products
Real Time Clock Trickle-Charge Timekeeping Chip
Data Sheet
0-6900: $1.20
DS1302+
DS1302+
Maxim Integrated Products
Real Time Clock Trickle-Charge Timekeeping Chip
Data Sheet
0-1: $2.23
1-25: $1.50
25-50: $1.09
50-100: $1.07
DS1302N
DS1302N
Maxim Integrated Products
Real Time Clock Trickle-Charge Timekeeping Chip
Data Sheet
0-6910: $1.49