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參數(shù)資料
| 型號： | TK5552 |
| 廠商： | Atmel Corp. |
| 英文描述： | Read/Write Transponder |
| 中文描述： | 讀/寫轉(zhuǎn)發(fā) |
| 文件頁數(shù)： | 13/22頁 |
| 文件大小： | 326K |
| 代理商： | TK5552 |
13
TK5552
4698A–RFID–04/03
If the ’Start-up Delay’ bit is set, the transponder IC remains inactive until 8192 RF clock
cycles have occured. If this option is deactivated, no delay will occur after the configura-
tion period of 114 RF clock cycles ( 1 ms).
Any field gap occuring during initialization will restart the complete sequence.
T
INIT
= (114 + 8,192 delay bit)/125 kHz 65 ms
After this initialization time, the transponder IC enters uplink mode and modulation starts
automatically using the parameters defined in the configuration block.
Uplink Operation
All transmissions from the IC to the base station utilize amplitude modulation (ASK) of
the RF carrier. This takes place by switching a resistive load between the coil pads
(Clock-A and Clock-B) which in turn modulate the RF field generated by the base station
(reflective back scatter modulation).
MaxBlock
Data from the memory is serially transmitted, starting with block 1, bit 1, up to the last
block (MAXBLK), bit 32. The last block to will be transmitted is defined by the mode
parameter field MAXBLK which is stored in EEPROM block 0. When the MAXBLK
address has been reached, data transmission restarts with block 1.
The user defines the cyclic data stream by setting the MAXBLK to a value between 0
and 31 (representing each of the 32 data blocks). If set to 1, only block 1 is transmitted.
If set to 31, blocks 1 to 31 will be sequentially transmitted. If set to 0, only the contents of
the configuration block (normally not accessible) will be transmitted (see Figure 16).
It is also possible to access a single data block selectively, independent of the MAXBLK
value, by using the direct access command (Opcode 11). Thus the addressed data
block is transmitted continously.
Figure 16.
Data Stream Pattern Depending on MAXBLK
Data Encoding
When entering the uplink mode, the data stream is always preceeded by a single start
bit (always 0). Then the data stream continues with block 1, bit 1, etc., up to MAXBLK,
bit 32. This data stream pattern cycles continuously.
Block 1
Block 2
Block 30
Block 31
MAXBLK = 31
MAXBLK = 1
MAXBLK = 2
Block 1
Block 1
Block 1
Block 1
Block 1
Block 1
Block 2
Block 1
Block 2
Block 1
0
0
0
Loading block 0
(not transmitted)
Loading block 0
Loading block 0
MAXBLK = 0
Block 0
Block 0
Block 0
Block 0
Block 0
0
Loading block 0
Block 1
....
....
....
....
Block 1
Block 2
Block 0
Block 2
Block 1
Block 1
Block 0
Refreshing configuration register
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PDF描述 |
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| TK5552A-PP | Read/Write Transponder |
| TK5561A-PP | READ/WRITE CRYPTO TRANSPONDER FOR SHORT CYCLE TIME |
| TL061AMN | LOW POWER J-FET SINGLE OPERATIONAL AMPLIFIER |
| TL061B | LOW POWER J-FET SINGLE OPERATIONAL AMPLIFIER |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TK5552A-PP | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Read/Write Transponder |
| TK5561A-PP | 功能描述:射頻無線雜項 Crypto-Transp. Prog f.all appl. RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
| TK55A10J1(Q) | 制造商:Toshiba America Electronic Components 功能描述: 制造商:Toshiba America Electronic Components 功能描述:Trans MOSFET N-CH 100V 55A 3-Pin(3+Tab) TO-220SIS |
| TK55D10J1 | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Switching Regulator Applications |
| TK55D10J1(Q) | 功能描述:MOSFET MOSFET N-Ch RoHS:否 制造商:STMicroelectronics 晶體管極性:N-Channel 汲極/源極擊穿電壓:650 V 閘/源擊穿電壓:25 V 漏極連續(xù)電流:130 A 電阻汲極/源極 RDS（導(dǎo)通）:0.014 Ohms 配置:Single 最大工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:Max247 封裝:Tube |
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