U3280M 데이터 시트보기 (PDF) - Atmel Corporation

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U3280M

Transponder Interface for Microcontroller

Atmel Corporation 

2. Pin Configuration

Figure 2-1. Pinning

VBatt 1

VDD 2

SCL 3

NRST 4

SDA 5

VSS 6

NC 7

FC 8

16 Coil 2

15 Coil 1

14 NC

13 NC

12 NC

11 NC

10 NGAP

9 MOD

U3280M

Table 2-1.

Pin

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Pin Description

Symbol Function

VBatt

Power supply voltage input to connect a battery

VDD

Power supply voltage for the microcontroller and EEPROM. At this pin a buffer capacitor (0.5 to 10 µF)

must be connected to buffer the voltage during field supply and to block the VDD of the microcontroller.

SCL

Serial clock line

NRST Reset line bi-directional

SDA

Serial data line

VSS

Circuit ground

NC

Not connected

FC

Field clock output of the front-end clock extractor

MOD

Modulation input

NGAP Gap and field detect output

NC

Not connected

NC

Not connected

NC

Not connected

NC

Not connected

Coil 1 Coil input 1. Use pin to connect a resonant circuitry for communication and field supply

Coil 2 Coil input 2. Use pin to connect a resonant circuitry for communication and field supply

3

4688D–RFID–03/07

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