YQ8563
Direct Replacement for NXP PCF8563
- Brand： YQM
- Size/Package： 3.0 x 3.0 x 0.85/3.9 x 4.9 x 1.4 mm
- Parameter： 1.0-5.5V
- Interface： I²C
- Operating Temp： -40°C ~+85°C
- Package： MSOP8,SOP8
- Applications： Mobile Phones, Portable Instruments, Electronic Metering.
- 產品參數
- Brand： YQM
- Size/Package： 3.0 x 3.0 x 0.85/3.9 x 4.9 x 1.4 mm
- Parameter： 1.0-5.5V
- Interface： I²C
- Operating Temp： -40°C ~+85°C
- Package： MSOP8,SOP8
- Applications： Mobile Phones, Portable Instruments, Electronic Metering.
YQ8563 | Low-Power I²C Real-Time Clock (RTC)
Product Introduction
The YQ8563 is a low-power CMOS real-time clock/calendar IC — a domestic pin- and register-compatible replacement for the NXP PCF8563. It communicates over the I²C bus with an external 32.768kHz crystal. Alarm and timer functions, integrated oscillator capacitors and an internal power-on reset (POR) simplify design, while the 0.25µA backup current and wide 1.0~5.5V supply make it ideal for coin-cell and lithium-battery systems — timekeeping is maintained down to 1V.
Core Advantages
- PCF8563 replacement: pin- and register-compatible with the NXP PCF8563 — a straightforward, cost-effective domestic alternative.
- Ultra-low backup current: 0.25µA, well suited to battery-powered IoT devices, thermometers, electricity meters and handheld equipment.
- Wide supply voltage: 1.0~5.5V with timekeeping maintained down to 1V — friendly to lithium and coin-cell systems.
- Integrated functionality: alarm and timer functions, integrated oscillator capacitors and internal power-on reset (POR).
- Supply: YQM ELECTRONICS supplies YQ8563 with fast samples, competitive pricing and FAE support for volume programs.
Key Specifications
| Parameter | Value |
|---|---|
| Product Type | Low-Power CMOS Real-Time Clock / Calendar IC |
| Brand | YQM |
| Supply Voltage | 1.0~5.5V (timekeeping down to 1V) |
| Backup Current | 0.25µA |
| Interface | I²C |
| Crystal | External 32.768kHz |
| Package | MSOP8, SOP8 |
| Size | 3.0×3.0×0.85 mm / 3.9×4.9×1.4 mm |
| Operating Temperature | -40°C~+85°C |
| Functions | Alarm & timer, integrated oscillator capacitors, internal POR |
Cross Reference & Replacement
Pin- and register-compatible replacement:
| Brand | Replacement P/N | Note |
|---|---|---|
| NXP | PCF8563 | Pin- and register-compatible replacement — cost-effective, self-reliant supply |
Applications
Wearables, thermometers and battery-powered IoT devices
Electricity, water and gas metering with time-stamping
Industrial and portable instruments
Home appliances requiring calendar timekeeping
FAQ
Q: Is the YQ8563 a drop-in replacement for the NXP PCF8563?
A: Yes — the YQ8563 is pin- and register-compatible with the NXP PCF8563, providing a cost-effective domestic alternative.
Q: What is the backup current?
A: 0.25µA, making the YQ8563 well suited to coin-cell and battery-powered timekeeping.
Q: What supply voltage does the YQ8563 support?
A: 1.0~5.5V; timekeeping is maintained down to 1V for lithium and coin-cell systems.
Q: Does the YQ8563 need an external crystal?
A: Yes — it operates with an external 32.768kHz crystal. (If you prefer a crystal-free design, the YQ8025T integrates a DTCXO.)
Related Products
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