Description
PCF8563T-5
Overview
The PCF8563T-5 is a CMOS real-time clock/calendaroptimized for low power consumption. The device uses a 32.768 kHz crystal oscillator and features a programmable clock output, interrupt output, and voltage-low detector.
Features
- Low power consumption: typical 0.25 μA at VDD = 2.0 V
- Programmable clock output: 32.768 kHz, 1 Hz, 4 Hz, 8 Hz, 16 Hz
- Interrupt output: selectable from alarm, timer, or update ended
- Voltage-low detector: VLOW at 1.0 V, with interrupt generation
- Automatic leap year compensation
- 12/24 hour format
*"’;without battery backup support
Functional Description
The PCF8563T-5 contains a real-time clock/calendar and 256 bytes of user RAM. The clock/calendar can be programmed in either 12-hour or 24-hour format. The device features an alarm, timer, and update ended interrupt, as well as a programmable clock output that can be set to 32.768 kHz, 1 Hz, 4 Hz, 8 Hz, or 16 Hz.
Pin Description
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | VDD | Positive power supply |
| 2 | GND | Ground |
| 3 | SCL | Serial clock input |
| 4 | SDA | Serial data input/output |
| 5 | INT | Interrupt output |
| 6 | CLKOUT | Clock output |
| 7 | OSC1 | Crystal oscillator input 1 |
| 8 | OSC2 | Crystal oscillator input 2 |
Ordering Information
- Package: TSSOP8
- Temperature range: -40°C to 85°C
- Operating voltage: 1.0 V to 5.5 V
Parameter Summary
- Operating voltage: 1.0 V to 5.5 V
- Operating temperature: -40°C to 85°C
- Storage temperature: -65°C to 150°C
- Clock accuracy: ±5 ppm (typical)