DESCRIPTION:

– The DS1302 Real-Time Clock Module provides a DS1302 real-time clock with a 32 kHz crystal and on-board battery backup, all in a small SIP module that can be easily plugged into a breadboard.
– The DS1302 provides seconds, minutes, hours, date, day of week and year with leap-year compensation up to the year 2100. You can use 24-hour mode or 12-hour mode with AM/PM indication and there are 31 bytes of RAM that are also battery-backed. BASIC Stamp 2 example code is available under Downloads, and a Propeller Spin object is linked under Additional Resources.

Features:

• – On-board CR1220 battery holder
• – SPI interface supports 3-wire or 4-wire synchronous serial connection
• – Wide operating voltage supports 3.3V and 5V microcontrollers
• – Convenient SIP header makes breadboarding easy
• – Coin-cell battery included
  Application Ideas:
• – Electronic Clock
• – Datalogger
• – Sprinkler Control Timer
  NOTE: Do not enable the onboard DS1302 IC’s trickle-charging circuit. Because this module contains a lithium coin-cell battery for backup, enabling the trickle-charging circuit could damage the battery and/or module.

SPECIFICATIONS:

• – Voltage requirements: 3.3-5 VDC
• – Current requirements: 3.2 mA @ 5 VDC
• – Communication: 3 or 4-wire Synchronous Serial (SPI) Interface
• – Dimensions: 1.22 x 0.6 in (31.2 x 15.5 mm)
• – Operating temperature range: +32 to +158 °F (0 to +70 °C)