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© Copyright 2002 Texas Instruments Incorporated.

11-07-22-001 09/02

SCBS856

HF Reader System Series 6000

S6700 Multi-Protocol Transceiver IC

The S6700 Multi Protocol Transceiver IC enables a broad range of 13.56MHz

RFID interrogator designs for portable and stationary readers. This low power

consumption device supports multiple RF communication protocols, minimizes

onboard power requirements and reduces parts count in a final reader product.

Part number

RI-R6C-001A

Operating Frequency

13.56MHz

Supported RF Communication Protocols

-

Tag-it HF

-

ISO 15693-2 (e.g. Tag-it HF-I)

-

ISO 14443-2 (Type A)

-

Transparent (directly switched according to input pin)

Operating Voltage

3.3V - 5V DC

± 10%

Current Consumption

Transmit:

< 200 mA

Stand-by: - Oscillator on < 15 mA

- Oscillator off < 50 µA

Transmitter power

200mW at 5V DC operating voltage

Transmitter modulation

ASK, 10% to 100% selectable through external components

Antenna Impedance

50 Ohm at 13.56MHz

Receive channels

ASK 423.75kHz, ASK 847kHz, FSK 423.75kHz/484.29kHz selectable

Communication Interface

Serial interface, CMOS compatible

Operating Temperature

-40

°C to +85°C

Storage Temperature

-55

°C to +125°C

Package / Pincount

SSOP 20

Packing / Delivery

Tape-on-Reel, 1500 units per reel

Recommended application schematic

Pin description

L3

µC

ANTENNA

C6

C5

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

VDD_TX

TX_OUT

R_MOD

VSS_TX

XTAL1

XTAL2

VSS_DIG

XTAL_CLK

DOUT

VDD_DIG

DIN

M_ERR

SCLOCK

VDD_RX

VSS_RX

RX_IN

VCC

VCC

C2

R1

XTAL 13.56 MHz

VCC

L4

C10

C8

L2

COAX

R2

C4

C3

C 7

L1

C1

C9

C1

47pF

C2

10pF

C3

10nF

C4

47pF

C5

10µF Tantalum

C6

100nF

C7

22pF

C8

100nF

C9

22pF

C10

100nF

L1

2.7µH (Q-60)

L2

2.7µH (Q-60)

L3

5.6µH (Q-60)

L4

3.3µH (Q-60)

R1

2.2k

Ω

R2

18

Ω

Pin

Symbol

Description

1

VDD_TX

Transmitter power supply

2

TX_OUT

Output transistor drain connection

3

R_MOD

External resistor to set 10% modulation depth mode

4

VSS_TC

Transmitter section ground

5

XTAL1

Pin 1 of Xtal resonator

6

XTAL2

Pin 2 of Xtal resonator, external clock input

7

VSS_DIG

Digital section ground

8

XTAL_CLK

Buffered output of Xtal oscillator

9

Not used

Grounded for normal operation

10

Not used

Grounded for normal operation

11

DOUT

Data output for serial link

12

VDD_DIG

Digital section power supply

13

DIN

Data input for serial link

14

M_ERR

Manchester Protocol error flag

15

SCLOCK

Serial link clock

16

Not used

Leave open for normal operation

17

VDD_RX

Receiver section power supply

18

Not used

Leave open for normal operation

19

VSS_RX

Receiver section ground

20

RX_IN

Receiver input

For more information, contact the sales office or distributor nearest you. This contact information can be found

on our web site at:

http://www.ti-rfid.com