Suntsu’s new RTC (Real-Time Clock), SLR32CN-32.768K, has a built-in 32.768kHz TCXO with an I2C bus interface and provides ultra-low power consumption. The 32.768 kHz crystal is the long-standing RTC timekeeping standard — 2¹⁵ Hz divides cleanly to a one-second tick — and pairing it with an I²C interface and microamp-level current draw is what enables years of battery-backed timekeeping [1] [2].
New CMOS process technology achieves ultra-low current consumption of 0.5µA, with a high frequency stability of +/-5.0ppm over -40~85°C.
Suntsu’s precise high-temperature sensor and compensation circuit ensures high clock accuracy and supports calendar, clock, alarm, and wakeup timer functions [2]. Various power supply sources can be used.
Key features include
- Built-in 32.768kHz TCXO
- Supply voltages of 1.6V to 5.0V
- Ultra-Low current consumption of 0.5µA
- High stability of ±5.0ppm over -40~85°C
- 3.2 x 2.5mm SMD package size
- Auto power switching function
- Support time accuracy to 1/16 second
Applications include
- Industrial
- Digital Camera
- Communications
- Handheld Instruments
- Wearables
- Battery powered devices
Suntsu RTC SLR32CN-32.768K
| Series | Image | Package | Stability To | Frequency | Voltage(s) | Reel | Key Feature | Datasheet |
|---|---|---|---|---|---|---|---|---|
| SLR32C |  | 3.2x2.5 | ±5ppm | 32.768 kHz | 1.6V ~ 5.0V | 1.5K | Ultra-Low Power Consumption, Ultra High Stability, SMD |  |
“Kill two birds with one stone! Suntsu’s ultra-low power consumption RTC with high stability will help you
achieve a longer battery life and better performance over standard operating temperatures.”
– KH Mun / Director of Engineering
Need more information? Please contact us with any questions.
References
[1] ECS Inc. “Why Are 32.768 kHz Crystals and Oscillators Used in Real Time Clocks?” Available at: https://ecsxtal.com/news-resources/why-are-32-768-khz-crystals-and-oscillators-used-in-real-time-clocks/
[2] ECS Inc. “What is a Real Time Clock (RTC)?” Available at: https://ecsxtal.com/what-is-a-real-time-clock-rtc/
[3] Analog Devices. “DS1307 RTC datasheet” Available at: https://www.analog.com/media/en/technical-documentation/data-sheets/DS1307.pdf