DS1306_05 Datasheet, PDF (1/21 Pages) Dallas Semiconductor – Serial Alarm Real-Time Clock

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DS1306
Serial Alarm Real-Time Clock
FEATURES
§ Real-Time Clock (RTC) Counts Seconds,
Minutes, Hours, Date of the Month, Month,
Day of the Week, and Year with Leap-Year
Compensation Valid Up to 2100
§ 96-Byte, Battery-Backed NV RAM for Data
Storage
§ Two Time-of-Day Alarms, Programmable on
Combination of Seconds, Minutes, Hours,
and Day of the Week
§ 1Hz and 32.768kHz Clock Outputs
§ Supports Motorola SPI^™ (Serial Peripheral
Interface) Modes 1 and 3 or Standard 3-Wire
Interface
§ Burst Mode for Reading/Writing Successive
Addresses in Clock/RAM
§ Dual-Power Supply Pins for Primary and
Backup Power Supplies
§ Optional Trickle Charge Output to Backup
Supply
§ 2.0V to 5.5V Operation
§ Optional Industrial Temperature Range:
-40°C to +85°C
§ Available in Space-Efficient, 20-Pin TSSOP
Package
§ Underwriters Laboratory (UL) Recognized
PIN CONFIGURATIONS
VCC2
VBAT
X1
N.C.
X2
N.C.
INT0
INT1
1Hz
GND
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
TSSOP (4.4mm)
VCC1
N.C.
32kHz
VCCIF
SDO
SDI
SCLK
N.C.
CE
SERMODE
VCC2
1
VBAT
2
X1 ³
X2 ⁴
INT0 ⁵
INT1 ⁶
1Hz ⁷
GND ⁸
16
VCC1
15 _32kHz
14
VCCIF
13 _SDO
12 _SDI
11 _SCLK
10 _CE
9 _SERMODE
DIP (300 mils)
Package Dimension Information can be found at:
www.maxim-ic.com/DallasPackInfo
TYPICAL OPERATING CIRCUIT
SPI is a trademark of Motorola, Inc.
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REV: 071105