PCF2127ATSLASH1 datasheet(65/80 Pages) NXP

65 / 80 page

PCF2127A_2

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Product data sheet

Rev. 02 — 7 May 2010

65 of 80

NXP Semiconductors

PCF2127A

Integrated RTC, TCXO and quartz crystal

[1]

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

[2]

Timer source clock = 1

⁄

60 Hz, level of pins SDA/CE, SDI and SCL is VDD or VSS.

[3]

Tested on sample basis.

Inputs

input voltage

−0.5

VDD + 0.5

VIL

LOW-level input voltage

0.25VDD

Tamb = −20 °C to +85 °C;

VDD >2.0 V

0.3VDD

VIH

HIGH-level input voltage

0.7VDD

ILI

input leakage current

VI =VDD or VSS

−10

μA

input capacitance

[3] --

Outputs

output voltage

on pins CLKOUT, INT, RST,

PFO, referring to external pull-up

−0.5

5.5

on pin SDO

−0.5

VBBS + 0.5 V

IOL

LOW-level output current

output sink current;

VOL = 0.4 V

on pin SDA/CE

317

on all other outputs

1.0

IOH

HIGH-level output current

output source current;

on pin SDO; VOH = 3.8 V; VDD =

4.2 V

1.0

ILO

output leakage current

VO = VDD or VSS

−10

μA

Table 61.

Static characteristics …continued

VDD = 1.8 V to 4.2 V; VSS =0V; Tamb = −40 °C to +85 °C, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

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