DS3234 Precision SPI Real-Time Clock Module with Coin-Cell Backup
Currently unavailable
No store has this product in stock right now. Prices below are the last ones we recorded.
Prices updated: 12 Oct 2026
Price history
Lowest daily price, last 90 days
Not enough price history yet.
About this product
A real-time clock module built around the DS3234 SPI RTC chip, which includes a temperature-compensated crystal oscillator for high timekeeping accuracy. It tracks seconds through year with leap-year correction, offers 12/24-hour formats, two time-of-day alarms and a programmable square-wave output.
Specifications
- RTC IC
- DS3234
- Interface
- SPI
- Oscillator
- Temperature-compensated crystal (built in)
- Time-of-day alarms
- 2
- Clock format
- 12/24-hour with AM/PM
- Square-wave output
- Programmable
- Backup battery holder
- 12 mm coin cell
Frequently asked questions
How do I connect it to an Arduino?
It uses the SPI bus, so connect the MOSI, MISO and SCK pins to the board's SPI pins, add a chip-select pin to a digital pin, and power it as labelled on the module. Confirm the exact pin labels on your board before wiring.
Does it keep time when the main power is off?
Yes, the 12 mm coin-cell holder on the underside provides backup power so the clock keeps running while the main supply is disconnected.
