PCA2125 datasheet(2/40 Pages) NXP

2 / 40 page

PCA2125_00

Preliminary data sheet

Rev. 00.11 — 30 January 2007

2 of 40

NXP Semiconductors

PCA2125

SPI Real time clock / calendar

Pinning information

2.1 Pinning

2.2 Pin description

IDD

supply current

fSCL =7.0 MHz

800

μA

fSCL =1.0 MHz

200

μA

SPI bus inactive and CLKOUT disabled;

fSCL =0 kHz; Tamb =25

°C

VDD = 5 V

550

725

VDD = 2 V

550

725

Tamb

ambient temperature

operating

−40

+125

°C

Tstg

storage temperature

−65

+150

°C

Table 1.

Quick reference data …continued

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Fig 1.

Pin configuration TSSOP14

PCA2125

OSCI

VDD

OSCO

CLKOUT

n.c.

INT

SCL

SDI

VSS

SDO

001aaf892

Table 2.

Pin description PCA2125

Symbol

Description

OSCI

oscillator input

OSCO

oscillator output

Do not connect and do not use as feed through. Connect to VDD if

floating pins not allowed.

Do not connect and do not use as feed through. Connect to VDD if

floating pins not allowed.

INT

interrupt output (open-drain; active LOW). When not used, must be

connected to VSS or pulled high via a resistor.

chip enable input (active HIGH) with 200 k

Ω pull down.

VSS

ground

SDO

serial data output, push-pull

SDI

serial data input. May float when CE inactive.

SCL

serial clock input. May float when CE inactive.

Do not connect and do not use as feed through. Connect to VDD if

floating pins not allowed.

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