Pin Connections

MC33690

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by MC33690/D

SEMICONDUCTOR TECHNICAL

MOTOROLA

REV 4.8

© Motorola, Inc., 2002.

This document contains information on a new product under development. Motorola

reserves the right to change or discontinue this product without notice.

Standalone Tag Reader Circuit

STARC

The Standalone Tag Reader Circuit (STARC) is an integrated

circuit dedicated to the automotive immobilizer applications. It

combines on the same chip all the circuitry to interface with a

transponder : antenna drivers and demodulator.

A low dropout voltage regulator and a physical interface fully

compatible with the ISO 9141 norm are also available.

The Standalone Tag Reader Circuit is fabricated with the

metal, 1.4µm, 45V technology, combining CMOS and bipolar

devices.

•

Contactless 125kHz tag reader module :

-

Self synchronous sample & hold demodulator

-

Amplitude or phase modulation detection

-

High sensitivity

-

Fast “read after write“ demodulator settling time

-

Low resistance and high current antenna drivers :

2

Ω @ 150mA (typ.)

-

Bidirectionnal data transmission

-

Multi tag, multi scheme operation.

•

Low dropout voltage regulator :

-

Wide input supply voltage range :

from 5.5V up to 40V

-

Output current capability up to 150mA DC with an

external power transistor

-

5V output voltage with a

± 5% accuracy

-

Low voltage reset function

-

Low current consumption in standby mode :

300µA (typ.).

•

ISO 9141 transmitter and receiver module :

-

Input voltage thresholds ratiometric to the supply

voltage

-

Current limitation

-

Ouput slew rate control

-

No external protection device required.

STANDALONE

TAG READER

CIRCUIT

SOURCE

TD1

VDD

TD2

XTAL2

XTAL1

AM

K

Rx

Tx

1

2

3

7

4

5

6

8

13

12

11

10

9

14

VSS

VSUP

GATE

15

16

17

20

19

18

MODE1

MODE2

RD

LVR

DOUT

AGND

CEXT

ORDERING INFORMATION

Device

Operating

Junction

Temperature

Range

Package

MC33690DW

125°C

SOIC 20

DW SUFFIX

Plastic Package

CASE 751D

SO - 20

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com