PCF8523T/1,118
NXP PCF8523T/1,118 芯片, 实时时钟/日历, I2C, SOIC-8
The is a Real-Time Clock and calendar optimized for low power consumption. Data is transferred serially via the I²C-bus with a maximum data rate of 1000kbps. Alarm and timer functions are available with the possibility to generate a wake-up signal on an interrupt pin. An offset register allows fine-tuning of the clock. This has a backup battery switch-over circuit, which detects power failures and automatically switches to the battery supply when a power failure occurs.
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- Battery backup input pin and switch-over circuit
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- Freely programmable timer and alarm with interrupt capability
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- Internal power-on reset
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- Open-drain interrupt or clock output pins
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- Programmable offset register for frequency adjustment