Atmel Norway AS A092107 사용자 설명서

 

 

ATZB-S1-256-3-0-U ZigBit 2.4GHz Single chip Wireless Module [DATASHEET] 

42199A

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WIRELESS

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10/2013 

14 

 

The ZigBit Modules are fixed with an EMI Shield to ensure compliance to Emission and Immunity rules. This shield is 

galvanic and NOT air tight. So cleaning of the module with IPA / other similar agents is not advised. Humidity protection 

coating (conformal) will cause deviated RF behavior and coating material being trapped inside EMI Shield. So this 

should be avoided. For products requiring conformal coating, it is advised to suitably mask the ZigBit before applying 

the coating to rest of the ZigBit carrier board. To protect ZigBit from humidity, the housing of the product should ensure 

suitable Ingress Protection standards are complied with. 

The UFL connector should never be exposed to Varnish / similar conformal coating material which will affect electrical 

connection on the surfaces of connector. 

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Metal enclosure should not be used. Using low profile enclosure might also affect antenna tuning 

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Placing high profile components next to antenna should be avoided 

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Having holes/vias punched around the periphery of the board eliminates parasitic radiation from the board edges 
also distorting antenna pattern 

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ZigBit module should not be placed next to consumer electronics which might interfere with ZigBit's RF frequency 
band 

A dedicated memory space is allocated to store product specific information and called the Persistence Memory. The 

organization of the persistence memory is as follows: 

Structure Revision 

2 bytes 

MAC address

(1) 

8 bytes 

Board information overall 

49 bytes 

                  Board information 

– PCBA Name 

30 bytes 

                  Board information 

– PCBA Serial number 

10 bytes 

                  Board information 

– PCBA Atmel Part Number 

8 bytes 

                  Board information 

– PCBA Revision 

1 byte 

Resereved 

3 bytes 

Xtal Calibration Value 

1 byte 

Reserved 

7 bytes 

Reserved 

4 bytes 

CRC 

1 byte 

 

In ATZB-S1-256-3-0-U persistence memory is stored in the User Signature Data (Page 1) of Atmega256RFR2 SoC with 

starting address 0x0100. User Signature Data is isolated from the main flash and will not be cleared by Chip erase 

Command.