The OSC-XT-32k-T12FFC.01 IP is an ultra-low power crystal-based oscillator designed in TSMC 12 nm FF for accurate 32 kHz clock generation in the SoC Always-On domain (eg. implementation of RTC features). An embedded auxiliary loop controls the voltage amplitude at the crystal terminals for maximizing the power efficiency for multiple crystals. It enables to drive external crystal-dependent pulling capacitors, thus allowing to select the best trade-off between BoM and frequency accuracy. A bypass mode allows to drive an external clock through the IP to its output port.
Key Benefits
- Compatible with 4 pF to 12.5 pF crystals
- Tolerate no load capacitance on the board to minimize the BoM
- FOK signal indicating when the clock signal is ready
- Shutdown and bypass modes
- Integrated diagnosis features
- Design For Test (DFT)
Key Features
| PARAMETERS | CONDITION |
Minimum value
|
Typical value
|
Maximum value
|
|---|---|---|---|---|
|
Input Voltage
|
- | 0.72 V | 0.99 V |
Applications
- Bluetooth
- Cellular IoT
- GNSS
- Hearing aids
- NB-IoT
- Smart Headset
- Smart Speaker
- TWS Earpods
- ULP MCU
- Voice-controlled devices
- Voice Assistant
- WiFi
Key Performances
- Power consumption (typ):
- - 100 nA with a 4 pF crystal
- - 165 nA with a 12.5 pF crystal
- Shutdown current (typ): 10 nA
- Frequency accuracy: ± 50 ppm
- Duty cycle: 50% ±10
Technical information
- Technology: TSMC 12 FF+
- Add-ons:
- RTC with calendar, timer and alarm functions.