MC33690DWE Datasheet MC33690DWE, MC33690DWER2 | P16-P18

MC33690 Standalone Tag Reader Circuit, Rev. 5

Tag Reader

Freescale Semiconductor16

15 Tag Reader

Typical values reflect average measurements at 6V ≤ V

SUP

≤ 16V, V

= 0V, T

= –40°C to +125°C, unless otherwise noted

Table 9. Tag Reader Specifications

Parameter Symbol

Test Conditions

and Comments

Min Typ Max Unit Type

Demodulator (pin RD)

2.0 Input Voltage Range V

INRD

— 345V—

2.2 Input Modulation Frequency F

MOD

—0.548kHz—

2.3 Demodulator Sensitivity V

SENSE1

6.5V ≤ V

SUP

≤ 16V

Sensitivity is measured in the

following application

conditions: I

ANTENNA

=50mA

peak, V

= 4V peak,

EXT

= 10nF, and square wave

modulation F

MOD

TD1

/32.

See Figure 12

—515mV—

2.31 Demodulator Sensitivity V

SENSE2

6V ≤ V

SUP

< 6.5V

The sensitivity is measured in

the following application

conditions:

ANTENNA

= 50mA peak,

= 4V peak, C

EXT

= 10nF,

and square wave modulation

MOD =

TD1

/32

See Figure 12

—730mV—

2.4 Demodulation Delay t

Demod

Configuration C

Not including the delay due to

the slew rate of the K output for

configurations A and B

See figure 12

—7.510μs—

2.5 After Write Pulse Settling Time t

Settling1

— — 394 400 μs—

2.6 Recovery Time after wake-up or

reset from clock stable to

demodulator valid output

Settling2

Clock stable condition implies

XTAL1

meets the specification

(see page 15).

— 646 700 μs—

Drivers (pins TD1, TD2)

3.5

Output Carrier Frequency to Crystal

Frequency Ratio

FTD/FXT

——64———

3.0

Turn on/off Delay t

on/off

— — — 250 ns —

3.1

Driver1/2 Low Side Out. Resistance R

TDL

LOAD

= 150mA DC — 2.4 4 Ω —

3.2

Driver1/2 High Side Out. Resistance R

TDH

LOAD

= -150mA DC — 2.1 4 Ω —

ISO 9141 Interface

MC33690 Standalone Tag Reader Circuit, Rev. 5

Freescale Semiconductor 17

Figure 12. Demodulator Parameters Definition

16 ISO 9141 Interface

Typical values reflect average measurements at 6V ≤ V

SUP

≤ 16V, V

= 0V, T

= –40°C to +125°C, unless otherwise noted

Table 10. ISO 9141 Interface Specifications

Parameter Symbol

Test Conditions

and Comments

Min Typ Max Unit Type

Receiver (pins K and AM)

4.0 Input Low Voltage V

— — — 0.3 x

SUP

V—

4.1 Input High Voltage V

—0.65 x

SUP

—40V—

4.2 Input Hysteresis Voltage V

HY1

— 0.4 0.65 1.3 V —

4.3 Biasing Current I

0V ≤ V

≤ 16V 135μA—

4.31 Input Current I

-3 ≤ V

< 0 −2 −1—mA—

4.4 K to Rx delay tdkrx — 2 10 μs—

Driver (pin K)

5.0

Output Falling Edge Slew Rate

Pull-up

= 510Ω,

Calculated from 20% to 80% of

the output swing.

3.5 5 6.5 V/μs—

5.1

Output Rising Edge Slew Rate

3.5 5 6.5 V/μs—

5.2

Rise Fall Slew Rates Symmetry

SYMET

−10 1V/μs—

5.3

Output Low Voltage

OLK

LOAD

= 25mA — 1.1 1.4 V —

5.4

Input Current

(driver switched on or off)

−3V ≤ V

≤ 0V −2— 0mA—

5.5

Current Limitation Threshold

0V ≤ V

≤ 40V 35 50 65 mA —

5.6

Thermal Shutdown Threshold

SDWN

— 130 150 170 °C—

Demodulator

SENSE

Demod

output (K or DOUT)

MC33690 Standalone Tag Reader Circuit, Rev. 5

Digital I/O

Freescale Semiconductor18

17 Digital I/O

Typical values reflect average measurements at 6V ≤ V

SUP

≤ 16V, V

= 0V, T

= –40°C to +125°C, unless otherwise noted

Table 11. Digital I/O Specifications

Characteristic Symbol

Test Condition

and Comments

Min Typ Max Unit Type

Input (pins MODE1, MODE2, AM, TX)

6.0 Input Low Voltage V

ILD

— 0 — 0.3 x

V—

6.1 Input High Voltage V

IHD

— 0.7 x

—V

V—

6.2 Input Hysteresis Voltage V

—.24.71V—

Output (pins DOUT,RX)

7.0 Output Low Voltage V

LOAD

= 500uA 0 0.5 0.2 x

V—

7.1 Output High Voltage V

LOAD

= -500uA 0.8 x

4.6 V

V—

7.2 Fall/Rise Time t

F/R

LOAD

=10pF,

Calculated from 10% to 90% of

the output swing

— — 150 ns —

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P18 P19-P21 P22-P24 P25-P26

MC33690DWE

Mfr. #:

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Manufacturer:

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Digital Signal Processors & Controllers - DSP, DSC STAND ALONE TAG READER

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MC33690DWE

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