Arduino DS1302/ DS1307 RTC Real Time Clock Module with Battery CR2032 DS 1302 2032 1307 I2C Digital TechMakers

RTC Module DS1302

DS1302 Real Time Clock Module is a module with a CR2032 battery, external 32.768 kHz oscillator and DS1302N Trickle-Charge Timekeeping Chip. This module is Arduino compatible and suitable for Digital Clock project. Trickle-Charge Timekeeping Chip Pins: Pin 1 (Vcc2) - Primary Power-Supply Pin in Dual Supply Configuration, Pin 2 & 3 (X1 & X2) - Connections for Standard 32.768kHz Quartz Crystal, Pin 4 (GND) - Ground, Pin 5 (CE) - Input. CE signal must be asserted high during a read or a write, Pin 6 (I/O) - Input/Push-Pull Output. The I/O pin is the bidirectional data pin for the 3-wire interface, Pin 7 (SCLK) - Input. SCLK is used to synchronize data movement on the serial interface, Pin 8 (Vcc1) - Low-Power Operation in Single Supply and Battery-Operated Systems and LowPower Battery Backup. In systems using the trickle charger, the rechargeable energy source is connected to this pin.

Features:

- Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Week, and Year with Leap-Year Compensation Valid Up to 2100
- 31 x 8 Battery-Backed General-Purpose RAM
- Simple 3-Wire Inteface
- TTL-Compatible (Vcc = 5V)
- 8 pin DIP package or optional 8 pin SOIC package based on surface assembly.
- Low Power Operation Extends Battery Backup Run Time

Specifications:

- Operation Voltage: 2.0 to .5.5.V
- Uses Less Than 300nA at 2.0V
- Working Temperature Range: -40℃ +85℃
- Battery: CR2032 Lithium Cell 3V Button cell
- Dimension: 4.3 x 2.3 x 1.1 cm

Tutorial & Coding:

- Tutorial & Project (DS1302 RTC - Keypad - LCD): https://goo.gl/GLP7yd
- Coding (tutorial): https://goo.gl/8DLH2S
- Coding (project): https://goo.gl/tuU5ph

 RTC Module DS1307

Features:

- Operating voltage: 4.5V to 5.5V
- RTC Chip: DS1307
- Accuracy of the clock (quartz-dependent)
- EEPROM: AT24C32
- IIC bus interface, maximum transmission speed of 100 kHz (at 5V VCC)
- can be cascaded with other modules i2C
- CR2032 battery, the RTC stand-alone runs at power failure
- L x W x H: 28 x 27.2 x 8, .5 mm