Documentation
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3 documents
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Selector Guide
Real Time Clocks Selector Guide Brochure
Automotive Tiny Real-Time Clock/Calendar with Alarm Function and I2C-bus
PCA85073A Receive alerts
The PCA85073A is a CMOS1 Real-Time Clock (RTC) and calendar optimized for low power consumption. An offset register allows fine-tuning of the clock. All addresses and data are transferred serially via the two-line bidirectional I2C-bus. Maximum data rate is 400 kbit/s. The register address is incremented automatically after each written or read data byte.
Product Details
Features
- AEC-Q100 grade 2 compliant for automotive applications
- Provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal
- Low current; typical 0.25 µA at VDD = 3.0 V and Tamb = 25 °C
- Programmable clock output for peripheral devices (32.768 kHz, 16.384 kHz, 8.192 kHz, 4.096 kHz, 2.048 kHz, 1.024 kHz, and 1 Hz)
- Alarm function
- Minute and half minute interrupt
- Internal Power-On Reset (POR)
- High temperature operation range: —40 °C to +105 °C
- Clock operating voltage: 0.9 V to 5.5 V
- 400 kHz two-line I2C-bus interface (at VDD = 1.8 V to 5.5 V)
- Selectable integrated oscillator load capacitors for CL = 7 pF or CL = 12.5 pF
- Countdown timer
- Oscillator stop detection function
- Programmable offset register for frequency adjustment
- Latch-up performance exceeds 100 mA per JESD 78, Class II
- ESD protection exceeds JESD 22
- 4000 V Human-Body Model (A114-A)
- 1000 V Charged-Device Model (C101)
- Package offered: TSSOP8
Design Resources
Hardware
2 hardware offerings
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Evaluation and Development BoardsI²C-bus RTC demoboard
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Software
1 software file
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Code Snippets
PCx85063-PCA85073A SampleCode V1.0
Note: For better experience, software downloads are recommended on desktop.