Overview
The PCA21125T/Q900/1,1 is a CMOS Real-Time Clock (RTC) and calendar module produced by NXP USA Inc. This component is optimized for low-power consumption and operates over a wide temperature range up to 125 °C, making it suitable for various applications, including automotive systems due to its AEC Q100 compliance.
The PCA21125T/Q900/1,1 uses a Serial Peripheral Interface (SPI-bus) for data transfer, with a maximum data rate of 6.0 Mbit/s. It includes features such as alarm and timer functions, and the ability to generate a wake-up signal on the interrupt pin.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Operating Voltage | 1.3 V to 5.5 V | Clock operating voltage range |
| Supply Current | Typical 0.8 μA at Tamb = 25 °C | Low supply current for power efficiency |
| Interface | 4-line SPI-bus | Serial Peripheral Interface with separate data input and output |
| Temperature Range | Up to 125 °C | Operating temperature range |
| Package | 14-TSSOP (0.173, 4.40mm Width) | Package type and dimensions |
| Time Format | HH:MM:SS (24-hour system) | Time format used by the RTC |
| Date Format | YYYY-MM-DD | Date format used by the RTC |
| Alarm and Timer Functions | Freely programmable alarm and timer with interrupt capability | Ability to set alarms and timers with interrupt signals |
Key Features
- AEC Q100 Compliant: Suitable for automotive applications.
- Low Power Consumption: Typical supply current of 0.8 μA at 25 °C.
- SPI Interface: 4-line SPI-bus with separate data input and output.
- Integrated Oscillator: On-chip 32.768 kHz oscillator with one integrated capacitor.
- Programmable Clock Output: Provides a programmable clock output.
- Alarm and Timer Functions: Freely programmable alarm and timer with interrupt capability.
- Interrupt Capability: Generates a wake-up signal on the interrupt pin.
Applications
- Automotive Systems: AEC Q100 compliance makes it suitable for automotive applications.
- Industrial Automation: Used in systems requiring precise timekeeping and low power consumption.
- Consumer Electronics: Suitable for devices needing a reliable and low-power RTC solution.
- Medical Devices: Can be used in medical equipment requiring accurate time and date functions.
Q & A
- What is the operating voltage range of the PCA21125T/Q900/1,1?
The operating voltage range is from 1.3 V to 5.5 V.
- What is the typical supply current of the PCA21125T/Q900/1,1 at 25 °C?
The typical supply current is 0.8 μA at 25 °C.
- What type of interface does the PCA21125T/Q900/1,1 use?
The PCA21125T/Q900/1,1 uses a 4-line SPI-bus interface.
- What is the maximum operating temperature of the PCA21125T/Q900/1,1?
The maximum operating temperature is up to 125 °C.
- Is the PCA21125T/Q900/1,1 compliant with automotive standards?
Yes, it is AEC Q100 compliant, making it suitable for automotive applications.
- Does the PCA21125T/Q900/1,1 have alarm and timer functions?
Yes, it has freely programmable alarm and timer functions with interrupt capability.
- What is the package type of the PCA21125T/Q900/1,1?
The package type is 14-TSSOP with a width of 0.173 inches (4.40 mm).
- How does the PCA21125T/Q900/1,1 handle time and date formatting?
The time format is HH:MM:SS (24-hour system), and the date format is YYYY-MM-DD.
- Does the PCA21125T/Q900/1,1 have an integrated oscillator?
Yes, it has an on-chip 32.768 kHz oscillator with one integrated capacitor.
- Can the PCA21125T/Q900/1,1 generate a wake-up signal?
Yes, it can generate a wake-up signal on the interrupt pin.
