Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

TK5551M-PP Datasheet(PDF) 7 Page - ATMEL Corporation

Part # TK5551M-PP
Description  Standard Read/Write ID Transponder with Anti-collision
Download  12 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

TK5551M-PP Datasheet(HTML) 7 Page - ATMEL Corporation

Back Button TK5551M-PP Datasheet HTML 3Page - ATMEL Corporation TK5551M-PP Datasheet HTML 4Page - ATMEL Corporation TK5551M-PP Datasheet HTML 5Page - ATMEL Corporation TK5551M-PP Datasheet HTML 6Page - ATMEL Corporation TK5551M-PP Datasheet HTML 7Page - ATMEL Corporation TK5551M-PP Datasheet HTML 8Page - ATMEL Corporation TK5551M-PP Datasheet HTML 9Page - ATMEL Corporation TK5551M-PP Datasheet HTML 10Page - ATMEL Corporation TK5551M-PP Datasheet HTML 11Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 7 / 12 page
background image
7
4709F–RFID–06/06
TK5551
8.
Writing Data into the TK5551
The write sequence of the TK5551 is shown below. Writing data into the transponder occurs by
interrupting the RF field with short gaps. After the start gap the standard write OP code (10) is
followed by the lock bit. The next 32 bits contain the actual data. The last 3 bits denote the des-
tination block address. If the correct number of bits have been received, the actual data is
programmed into the specified memory block.
Figure 8-1.
Write Protocol
9.
Write Data Decoding
The time elapsing between two detected gaps is used to encode the information. As soon as a
gap is detected, a counter starts counting the number of field clock cycles until the next gap is
detected. Depending on how many field clocks elapse, the data is regarded as “0” or “1”. The
required number of field clocks is shown in Figure 9-1. A valid “0” is assumed if the number of
counted clock periods is between 16 and 32, for a valid “1” it is 48 or 64 respectively. Any other
value being detected results in an error, and the device exits write mode and returns to read
mode.
Figure 9-1.
Write Data Decoding Scheme
10. Actual Behavior of the Device
The TK5551 detects a gap if the voltage across the coils decreases below the threshold value of
an internal MOS transistor. Until then, the clock pulses are counted. The number given for a
valid “0” or “1” (see Figure 9-1) refers to the actual clock pulses counted by the device. However,
there are always more clock pulses being counted than were applied by the base station. The
reason for this is the fact that an RF field cannot be switched off immediately. The coil voltage
decreases exponentially. So although the RF field coming from the base station is switched off,
it takes some time until the voltage across the coils reaches the threshold value of an internal
MOS transistor and the device detects the gap.
Referring to the following diagram (see Figure 10-1 on page 8), this means that the device uses
the times t
0 internal and t1 internal. The exact times for t0 and t1 are dependent on the application
(e.g., field strength, etc.)
1
Standard OP-code
Address bits (e.g. block 4)
0
Read mode
Write mode
Start gap
0
1
0
0
Lock bit
32 bit
RF field
> 64 clocks
116
32
Field clock cycles
48
64
fail
0
fail
1
writing done
Write data decoder


Similar Part No. - TK5551M-PP

ManufacturerPart #DatasheetDescription
logo
ATMEL Corporation
TK5551 ATMEL-TK5551 Datasheet
241Kb / 10P
   STANDARD READ /WRITE ID TRANSPONDER WITH ANTI COLLISION
TK5551 ATMEL-TK5551 Datasheet
5Mb / 294P
   High Performance, Low Power Atmel AVR 8-bit Microcontroller Advanced RISC Architecture
More results

Similar Description - TK5551M-PP

ManufacturerPart #DatasheetDescription
logo
ATMEL Corporation
TK5551 ATMEL-TK5551 Datasheet
241Kb / 10P
   STANDARD READ /WRITE ID TRANSPONDER WITH ANTI COLLISION
ATA5551M-PPMY ATMEL-ATA5551M-PPMY_14 Datasheet
1Mb / 28P
   Standard Read/Write ID Transponder with Anti-collision
TK5552 ATMEL-TK5552 Datasheet
326Kb / 22P
   Read/Write Transponder
logo
List of Unclassifed Man...
MLX90111 ETC1-MLX90111 Datasheet
136Kb / 12P
   128bit Read Write Transponder
logo
ATMEL Corporation
ATA5577M1330C-PPMY ATMEL-ATA5577M1330C-PPMY_14 Datasheet
292Kb / 8P
   Read/Write LF RFID IDIC Transponder 125KHz
TK5561A-PP ATMEL-TK5561A-PP Datasheet
252Kb / 10P
   READ/WRITE CRYPTO TRANSPONDER FOR SHORT CYCLE TIME
E5561 ATMEL-E5561 Datasheet
390Kb / 26P
   Standard Read/Write Crypto Identification IC
E5561 ATMEL-E5561_06 Datasheet
434Kb / 28P
   Standard Read/Write Crypto Identification IC
TK5530 ATMEL-TK5530 Datasheet
215Kb / 9P
   READ ONLY TRANSPONDER
logo
Hitachi Semiconductor
HA16688MP HITACHI-HA16688MP Datasheet
134Kb / 5P
   READ / WRITE CIRCUIT
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com