PCF8563 datasheet(5/23 Pages) TGS

5 / 23 page

PCF8563

5/23

C h a r a c t e r i s t i c s

Symbol

Test conditions

Min

Typ.

Max

Unit

Low-level output

current;pin INT

I OL(INT)

-1

Low-level output

current;pin CLKOUT

I OL(CLKO

UT)

-1

High-level output

current;pin CLKOUT

I OH(CLKO

UT)

V OH =4.6V;

V DD =5V

Output leakage current

I LO

V O =V DD or V SS

-1

µA

Vo ltage Detector

Voltage-low detection

level

V LOW

Ta=25° C

0.9

1.0

For reliable oscillator start-up at power-up: V DD (min)power-up = V DD (min) + 0.3 V.

Timer source clock = 1¤60 Hz; SCL and SDA = V DD .

Tested on sample basis.

DYNAMIC ELECTRICAL CHARACTERISTICS

（

Unless otherwise specified， V DD = 1.8 to 5.0 V; Vss = 0 V; Tamb =- 40 to 85° C;

f OSC = 32.768 kHz; quartz Rs = 40 kΩ; C L = 8 pF; ）

C h a r a c t e r i s t i c s

Symbol

Test conditions

Min

Typ.

Max

Unit

Oscillator

Integrated load

capacitance

C L(integrat

ed)

Oscillator stability

∆f OSC /f O

∆V DD =200mV

Ta=25° C

2×10-7

Quartz crystal parameters (f OSC =32.768kHz)

Series resistance

R S

kΩ

Parallel load

capacitance

C L

Trimmer capacitance

C T

CLKOUT output

CLKOUT duty factor

δ CLKOUT

2 C-bus timing characteristics

SCL clock frequency

f SCL

400

kHz

START condition hold

time

t HD;STA

0.6

µs

Set-up time for a

repeated START

condition

t SU;STA

0.6

µs

SCL low time

t LOW

1.3

µs

SCL high time

t HIGH

0.6

µs

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