PCF2129T/2,518

NXP  PCF2129T/2,518  芯片, 实时时钟/日历, I2C/SPI, SOIC-16

The is an accurate RTC with an integrated temperature compensated crystal Xtal oscillator TCXO and a 32.768kHz quartz crystal optimized for very high accuracy and very low power consumption. This has a selectable I²C-bus or SPI-bus, a backup battery switch-over circuit, a programmable watchdog function and a timestamp function.

.

Timestamp function with interrupt capability

.

3 Line SPI-bus with separate data input and output

.

Battery backup input pin and switch-over circuitry

.

Oscillator stop detection function

.

Open-drain interrupt output

.

Programmable watchdog timer with interrupt