ChongMing Group (HK) Int'l Co., Ltd
CHONGMING GROUP (HK) INT'L CO., LTD.
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PCF8563 300 mW Electronic IC Chips timer ic Real - time clock / calendar
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PCF8563 Real-time clock/calendar
General description
The PCF8563 is a CMOS real-time clock/calendar optimized for low power consumption. A programmable clock output, interrupt output and voltage-low detector are also provided. All address and data are transferred serially via a two-line bidirectional I2C-bus. Maximum bus speed is 400 kbits/s. The built-in word address register is incremented automatically after each written or read data byte.
Features
■ Provides year, month, day, weekday, hours, minutes and seconds based on 32.768 kHz quartz crystal
■ Century flag
■ Wide operating supply voltage range: 1.0 to 5.5 V
■ Low back-up current; typical 0.25 µA at VDD = 3.0 V and Tamb = 25 °C
■ 400 kHz two-wire I2C-bus interface (at VDD = 1.8 to 5.5 V)
■ Programmable clock output for peripheral devices: 32.768 kHz, 1024 Hz, 32 Hz and 1 Hz
■ Alarm and timer functions
■ Voltage-low detector
■ Integrated oscillator capacitor
■ Internal power-on reset
■ I 2C-bus slave address: read A3H; write A2H
■ Open drain interrupt pin.
Applications
■ Mobile telephones
■ Portable instruments
■ Fax machines
■ Battery powered products.
Quick reference data
| Symbol | Parameter | Conditions | Min | Max | Unit |
| VDD | supply voltage operating mode | I2C-bus inactive; Tamb = 25 °C | 1.0 | 5.5 | V |
| I 2C-bus active; fSCL = 400 kHz; Tamb = −40 to +85 °C | 1.8 | 5.5 | V | ||
| IDD | supply current; timer and CLKOUT disabled | fSCL = 400 kHz | - | 800 | µA |
| fSCL = 100 kHz | - | 200 | µA | ||
| fSCL = 0 Hz; Tamb = 25 °C | |||||
| VDD = 5 V | - | 550 | nA | ||
| VDD = 2 V | - | 450 | nA | ||
| Tamb | operating ambient temperature | -40 | +85 | °C | |
| Tstg | storage temperature | -65 | +150 | °C |
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
| Symbol | Parameter | Min | Max | Unit |
| VDD | supply voltage | -0.5 | +6.5 | V |
| IDD | supply current | -50 | +50 | mA |
| VI | input voltage on inputs SCL and SDA | -0.5 | 6.5 | V |
| input voltage on input OSCI | -0.5 | VDD + 0.5 | V | |
| VO | output voltage on outputs CLKOUT and INT | -0.5 | 6.5 | V |
| II | DC input current at any input | -10 | +10 | mA |
| IO | DC output current at any output | -10 | +10 | mA |
| Ptot | total power dissipation | - | 300 | mW |
| Tamb | operating ambient temperature | -40 | +85 | °C |
| Tstg | storage temperature | -65 | +150 | °C |
Block diagram
Pin configuration
Device diode protection diagram