PCF8583P datasheet(20/28 Pages) PHILIPS

Part #	PCF8583P

Description	Clock/calendar with 240 x 8-bit RAM

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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20 / 28 page

1997 Jul 15

20

Philips Semiconductors

Product speciﬁcation

Clock/calendar with 240

× 8-bit RAM

PCF8583

13 AC CHARACTERISTICS

VDD = 2.5 to 6.0 V; VSS = 0 V; Tamb = −40 to +85 °C; unless otherwise speciﬁed.

Notes

1. Event counter mode only.

2. All timing values are valid within the operating supply voltage and ambient temperature range and reference to VIL

and VIH with an input voltage swing of VSS to VDD.

3. A detailed description of the I2C-bus specification, with applications, is given in brochure

“The I2C-bus and how to

use it”. This brochure may be ordered using the code 9398 393 40011.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Oscillator

Cosc

integrated oscillator

capacitance

−

40

−

pF

∆f

osc

oscillator stability

for

∆VDD = 100 mV;

Tamb =25 °C; VDD = 1.5 V

−

2

× 10−7

−

fi

input frequency

note 1

−−

1

MHz

Quartz crystal parameters (f = 32.768 kHz)

Rs

series resistance

−−

40

k

Ω

CL

parallel load capacitance

−

10

−

pF

CT

trimmer capacitance

5

−

25

pF

I2C-bus timing (see Fig.21; notes 2 and 3)

fSCL

SCL clock frequency

−−

100

kHz

tSP

tolerable spike width on bus

−−

100

ns

tBUF

bus free time

4.7

−−µs

tSU;STA

START condition set-up time

4.7

−−µs

tHD;STA

START condition hold time

4.0

−−µs

tLOW

SCL LOW time

4.7

−−µs

tHIGH

SCL HIGH time

4.0

−−µs

tr

SCL and SDA rise time

−−

1.0

µs

tf

SCL and SDA fall time

−−

0.3

µs

tSU;DAT

data set-up time

250

−−

ns

tHD;DAT

data hold time

0

−−

ns

tVD;DAT

SCL LOW to data out valid

−−

3.4

µs

tSU;STO

STOP condition set-up time

4.0

−−µs

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