PCF8583T datasheet(20/37 Pages) PHILIPS

Part #	PCF8583T

Description	Clock and calendar with 240 x 8-bit RAM

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PCF8583

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Product data sheet

Rev. 06 — 6 October 2010

20 of 37

NXP Semiconductors

PCF8583

Clock and calendar with 240 x 8-bit RAM

10. Characteristics

10.1 Static characteristics

[1]

Typical values measured at Tamb = 25 °C.

[2]

When the device is powered on, VDD must exceed 1.5 V until the stable operation of the oscillator is established.

[3]

Event counter mode: supply current dependant upon input frequency.

[4]

See Figure 21.

[5]

The I2C-bus logic is disabled if VDD < Ven.

[6]

When the voltages are above or below the supply voltages VDD or VSS, an input current will flow; this current must not exceed ±0.5 mA.

[7]

Tested on a sample basis.

Table 7.

Static characteristics

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

Symbol

Parameter

Conditions

Min

Typ[1]

Max

Unit

VDD

supply voltage

operating mode

I2C-bus active

2.5

-

6.0

V

I2C-bus inactive

1.0

-

6.0

V

quartz oscillator

Tamb = 0 °C to +70 °C

[2]

1.0

-

6.0

V

IDD

supply current

operating mode

fSCL = 100 kHz clock mode

[3]

-

200

μA

clock mode; fSCL = 0 Hz

VDD = 5.0 V

[4]

-10

50

μA

VDD = 1.0 V

[4]

-2

10

μA

data retention;

fOSCI = 0 Hz; VDD = 1.0 V

Tamb = −40 °C to +85 °C

--5

μA

Tamb = −25 °C to +70 °C

--2

μA

Ven

enable voltage

I2C-bus enable level

[5]

1.5

1.9

2.3

V

Pin SDA

VIL

LOW-level input voltage

[6]

−0.8

-

0.3VDD

V

VIH

HIGH-level input voltage

[6]

0.7VDD

-VDD + 0.8 V

IOL

LOW-level output current

3.0

-

mA

ILI

input leakage current

−1-

+1

μA

CI

input capacitance

[7]

--7

pF

Pins A0 and OSCI

ILI

input leakage current

VI = VDD or VSS

−250

-

+250

nA

Pin INT

IOL

LOW-level output current

VOL = 0.4 V

3

-

mA

ILI

input leakage current

VI = VDD or VSS

−1-

+1

μA

Pin SCL

ILI

input leakage current

VI = VDD or VSS

−1-

+1

μA

CI

input capacitance

[7]

--7

pF

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