PCF2129AT datasheet(53/68 Pages) NXP

53 / 68 page

PCF2129A_1

Product data sheet

Rev. 01 — 13 January 2010

53 of 68

NXP Semiconductors

PCF2129A

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.

12.1 Current consumption IDD characteristics, typical

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

--V

ILI

input leakage current

VI =VDD or VSS

−10

μA

input capacitance

[3] --7

Outputs

output voltage

on pins CLKOUT, INT,

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; VDD = 4.2 V

on pin SDA

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

--mA

ILO

output leakage current

VO = VDD or VSS

−10

μA

Table 52.

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

CLKOUT disabled; PWRMNG[2:0] = 111; TSOFF = 1; TS input floating.

Fig 38. IDD as a function of temperature

Temperature (

°C)

−40

100

020

−20

001aaj432

0.8

1.2

0.4

1.6

2.0

IDD

(

μA)

VDD = 3 V

VDD = 2 V

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