DS1302_05 Datasheet, PDF (1/16 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 RAM for Scratchpad Data Storage
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 Laboratory (UL) Recognized
ORDERING INFORMATION
PART
TEMP RANGE PIN-PACKAGE
DS1302
0°C to +70°C 8 PDIP (300 mils)
DS1302+
0°C to +70°C 8 PDIP (300 mils)
DS1302N
-40°C to +85°C 8 PDIP (300 mils)
DS1302N+
-40°C to +85°C 8 PDIP (300 mils)
DS1302S
0°C to +70°C 8 SO (208 mils)
DS1302S+
0°C to +70°C 8 SO (208 mils)
DS1302SN
-40°C to +85°C 8 SO (208 mils)
DS1302SN+ -40°C to +85°C 8 SO (208 mils)
DS1302Z
0°C to +70°C 8 SO (150 mils)
DS1302Z+
0°C to +70°C 8 SO (150 mils)
DS1302ZN
-40°C to +85°C 8 SO (150 mils)
DS1302ZN+ -40°C to +85°C 8 SO (150 mils)
DS1302S-16
0°C to +70°C 16 SO (300 mils)
DS1302SN-16 -40°C to +85°C 16 SO (300 mils)
TOP MARK*
DS1302
DS1302
DS1302
DS1302
DS1302S
DS1302S
DS1302S
DS1302S
DS1302Z
DS1302Z
DS1302ZN
DS1302ZN
DS1302S16
DS1302SN16
+ Denotes a lead-free/RoHS-compliant device.
*An N anywhere on the top mark indicates an industrial temperature grade
device. A + anywhere on the top mark indicates a lead-free device.
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)
V_CC2
1
N.C. 2
X1 3
N.C. ⁴
X2 ⁵
N.C. ⁶
N.C. ⁷
GND 8
16
V_CC1
15 N.C.
14 SCLK
13 N.C.
12 I/O
11 N.C.
10 N.C.
9 CE
SO (300 mils)
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.
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