TDA8003TSSLASHC2 datasheet(5/24 Pages) PHILIPS

5 / 24 page

2000 Apr 20

Philips Semiconductors

Product speciﬁcation

I2C-bus SIM card interface

TDA8003TS

PINNING

Note

1. Card presence input with negative current source. To be used with the card reader switch connected to VDDS

or VDDP. The switch is normally closed when the card is not present. If the switch connection is open-circuit or pin 16

is not connected, then the interface will always detect a present card (see Fig.7).

SYMBOL

DESCRIPTION

PWROFF

control input for entering the Off mode (active LOW)

capacitor connection for the DC-to-DC converter (between S1 and S2)

PGND

power ground

capacitor connection for the DC-to-DC converter (between S3 and S4)

VDDP

power supply voltage

capacitor connection for the DC-to-DC converter (between S3 and S4)

capacitor connection for the DC-to-DC converter (between S1 and S2)

VUP

DC-to-DC converter output (must be decoupled with 100 nF to ground)

I/O

input/output to and from the card reader (C7I); see Fig.7

SGND

signal ground

CLK

clock output to the card reader (C3I)

VCC

supply voltage to the card reader (C1I)

RST

reset output to the card reader (C2I)

VDDS

signal supply voltage

DEL

external capacitor connection for the delay on voltage supervisor

PRES

card presence indication input (active LOW); note 1

SIMI/O

input/output to and from the microcontroller (internal 20 k

Ω pull-up resistor connected to V

DDI)

VDDI

supply voltage for the interface signals with the system

SDA

I2C-bus serial data input/output

SCL

I2C-bus serial clock input

SIMERR

interrupt output (active LOW; internal 100 k

Ω pull-up resistor connected to VDDI)

SAD0

I2C-bus slave address selection input

SAD1

I2C-bus slave address selection input

SIMCLK

external clock input

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