This is a Real Time Clock module for the PCF2129, a Real Time Clock IC by NXP. The PCF2129 has a selectable I²C-bus or SPI-bus.
It also has a backup battery switch-over circuit that lets you backup the timestamp information.
Features
-
Operating voltage: 1.2V - 4.2V
-
Temperature Compensated Crystal Oscillator (TCXO) with integrated capacitors
-
Typical accuracy:
-
PCF2129AT: ±3 ppm from -15 °C to +60 °C
-
Provides year, month, day, weekday, hours, minutes, seconds, and leap year correction
-
Timestamp function:
-
with interrupt capability
-
detection of two different events on one multilevel input pin (for example, for tamper detection)
-
SPI-bus and I²C-bus interface
-
Battery backup input pin and switch-over circuitry
-
Programmable watchdog timer with interrupt
-
Programmable alarm function with interrupt capability
Cautions
- Please prepare pin headers separately and solder them for your intended use.
Pin allocation
Surface
Back
Documents
Category
