Overview
The PCF2123TS/1,118 is a CMOS Real-Time Clock (RTC) and calendar module designed and manufactured by NXP USA Inc. This component is optimized for low power applications, making it suitable for a variety of devices that require accurate timekeeping with minimal power consumption.
Key Specifications
| Specification | Value |
|---|---|
| Operating Voltage | 1.1 V to 5.5 V |
| Backup Current | Typical 100 nA at VDD = 2.0 V and Tamb = 25 °C |
| Serial Interface | 3-line SPI-bus with separate, but combinable data input and output |
| Data Rate | Maximum 6.25 Mbit/s |
| Oscillator Frequency | 32.768 kHz |
| Integrated Load Capacitors | CL = 7 pF |
| Interrupt Output | 1 second or 1 minute interrupt output |
| Watchdog Functionality | Available |
| Timer and Alarm Functions | Freely programmable with interrupt capability |
| Package Type | HVQFN16 plastic thermal enhanced very thin quad flat package; no leads; 16 terminals; body 3 × 3 × 0.85 mm |
Key Features
- Real-time clock providing year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal.
- Low power consumption with a typical backup current of 100 nA.
- Resolution from seconds to years.
- Watchdog functionality.
- Freely programmable timer and alarm with interrupt capability.
- Programmable offset register for frequency adjustment.
- Internal Power-On Reset (POR).
- Open-drain interrupt and clock output pins.
Applications
- Time keeping applications.
- Battery powered devices.
- Metering applications.
- High duration timers.
- Daily alarms.
- Low standby power applications.
Q & A
- What is the PCF2123TS/1,118? The PCF2123TS/1,118 is a CMOS Real-Time Clock (RTC) and calendar module designed for low power applications.
- What is the operating voltage range of the PCF2123TS/1,118? The operating voltage range is from 1.1 V to 5.5 V.
- What is the typical backup current of the PCF2123TS/1,118? The typical backup current is 100 nA at VDD = 2.0 V and Tamb = 25 °C.
- What type of serial interface does the PCF2123TS/1,118 use? It uses a 3-line SPI-bus with separate, but combinable data input and output.
- What is the maximum data rate of the SPI interface? The maximum data rate is 6.25 Mbit/s.
- Does the PCF2123TS/1,118 have integrated load capacitors? Yes, it has integrated load capacitors with CL = 7 pF.
- What types of interrupt outputs are available? The PCF2123TS/1,118 provides 1 second or 1 minute interrupt output.
- Does the PCF2123TS/1,118 have watchdog functionality? Yes, it includes watchdog functionality.
- Can the timer and alarm functions be programmed? Yes, the timer and alarm functions are freely programmable with interrupt capability.
- What is the package type of the PCF2123TS/1,118? It is packaged in an HVQFN16 plastic thermal enhanced very thin quad flat package; no leads; 16 terminals; body 3 × 3 × 0.85 mm.
