DS1302 Datasheet, PDF (1/13 Pages) Dallas Semiconductor – Trickle Charge Timekeeping Chip

DS1302
Trickle-Charge Timekeeping Chip
www.maxim-ic.com
FEATURES
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
31 x 8 Battery-Backed General-Purpose RAM
Serial I/O for Minimum Pin Count
2.0V to 5.5V Full Operation
Uses Less than 300nA at 2.0V
Single-Byte or Multiple-Byte (Burst Mode)
Data Transfer for Read or Write of Clock or
RAM Data
8-Pin DIP or Optional 8-Pin SO for Surface
Mount
Simple 3-Wire Interface
TTL-Compatible (V_CC = 5V)
Optional Industrial Temperature Range:
-40°C to +85°C
DS1202 Compatible
Underwriters Laboratories (UL®)
Recognized
PIN CONFIGURATIONS
TOP VIEW
V_CC2
1
X1 2
X2 3
GND 4
8 VCC1
7 SCLK
6 ^I/O
5 ^CE
DIP (300mils)
V_CC2
1
X1 2
X2 3
GND 4
8
V_CC1
7 SCLK
6 I/O
5 CE
SO (208 mils/150 mils)
ORDERING INFORMATION
PART
TEMP RANGE
DS1302+
0°C to +70°C
DS1302N+
-40°C to +85°C
DS1302S+
0°C to +70°C
DS1302SN+
-40°C to +85°C
DS1302Z+
0°C to +70°C
DS1302ZN+
-40°C to +85°C
PIN-PACKAGE
8 PDIP (300 mils)
8 PDIP (300 mils)
8 SO (208 mils)
8 SO (208 mils)
8 SO (150 mils)
8 SO (150 mils)
TOP MARK*
DS1302
DS1302
DS1302S
DS1302S
DS1302Z
DS1302ZN
+Denotes a lead-free/RoHS-compliant package.
*An N anywhere on the top mark indicates an industrial temperature grade device. A + anywhere on the top mark indicates a lead-free device.
UL is a registered trademark of Underwriters Laboratories, Inc.
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