Overview
The PCA2131TF/Q900Y is a highly accurate Real Time Clock (RTC) and calendar module produced by NXP USA Inc. This CMOS-based RTC is designed with an integrated Temperature Compensated Crystal (Xtal) Oscillator (TCXO) and a 32.768 kHz quartz crystal, optimizing it for ultra-low power consumption and high accuracy. It is particularly suited for automotive applications, being AEC-Q100 compliant.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Temperature Range | -40 °C to +105 °C |
| Operating Voltage | 1.2 V to 5.5 V |
| Supply Current (typical at VDD = 3.3 V) | 106 nA |
| Communication Interfaces | Selectable I2C-bus or SPI-bus |
| Backup Battery Switch-over Circuit | Yes |
| Programmable Watchdog Function | Yes |
| Timestamps Function | Four timestamps |
| Package Type | HLSON16 (thermal enhanced low profile small outline, no leads, 16 terminals) |
| Package Dimensions | 4.5 mm x 3.5 mm x 1.45 mm |
Key Features
- Temperature Compensated Crystal Oscillator (TCXO) with trimmed integrated capacitors for high accuracy.
- Selectable I2C-bus or SPI-bus for flexible communication.
- Backup battery switch-over circuit for continuous operation.
- Programmable watchdog function for system monitoring.
- Four timestamps function for event logging.
- Ultra-low supply current for power-efficient operation.
- Interrupt outputs (INTA and INTB) for alarm and event notifications.
- Clock output (CLKOUT) with selectable frequencies from 32.768 kHz to 1 Hz.
Applications
- Electronic metering for electricity, water, and gas.
- Precision timekeeping in various devices.
- Access to accurate time of the day in consumer electronics.
- GPS equipment to reduce time to first fix.
- Products with long automated unattended operation time, such as industrial control systems.
Q & A
- What is the PCA2131TF/Q900Y used for? The PCA2131TF/Q900Y is used as a Real Time Clock (RTC) and calendar module, particularly in automotive and other applications requiring high accuracy and low power consumption.
- What are the communication interfaces available on the PCA2131TF/Q900Y? The PCA2131TF/Q900Y supports both I2C-bus and SPI-bus interfaces, which can be selected based on the application requirements.
- What is the operating temperature range of the PCA2131TF/Q900Y? The PCA2131TF/Q900Y operates within a temperature range of -40 °C to +105 °C.
- Does the PCA2131TF/Q900Y have a backup battery switch-over circuit? Yes, the PCA2131TF/Q900Y includes a backup battery switch-over circuit to ensure continuous operation.
- What is the typical supply current of the PCA2131TF/Q900Y at 3.3 V? The typical supply current is 106 nA at VDD = 3.3 V.
- What are the package dimensions of the PCA2131TF/Q900Y? The package dimensions are 4.5 mm x 3.5 mm x 1.45 mm in an HLSON16 package.
- Is the PCA2131TF/Q900Y AEC-Q100 compliant? Yes, the PCA2131TF/Q900Y is AEC-Q100 compliant, making it suitable for automotive applications.
- What are the clock output frequencies available on the PCA2131TF/Q900Y? The clock output frequencies can be selected from 32.768 kHz down to 1 Hz.
- Does the PCA2131TF/Q900Y have a programmable watchdog function? Yes, the PCA2131TF/Q900Y includes a programmable watchdog function for system monitoring.
- How many timestamps can the PCA2131TF/Q900Y support? The PCA2131TF/Q900Y supports four timestamps.
