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ST25TA64K датащи(PDF) 36 Page - STMicroelectronics

номер детали ST25TA64K
подробное описание детали  NFC Forum Type 4 Tag IC with 64-Kbit EEPROM
PDF  45 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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ST25TA64K датащи(HTML) 36 Page - STMicroelectronics

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RF command sets
ST25TA64K
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DocID027764 Rev 1
The SFGI which stands for the Start-up Frame Guard Time is the minimum time that the
reader shall wait after receiving the response of the ST25TA64K.
5.9.3
PPS command & response
PPS (Protocol and Parameter Selection) command and response are defined in ISO/IEC
14443-4, in the Protocol Activation of PICC Type A.
The PPS command allows to change the data rates of the ascending (RF host to
ST25TA64K) and descending (ST25TA64K to RF host) data rates.
The ascending and descending data rates shall be coded as described in Table 49.
When the ST25TA64K is able to change both data rates, it returns the following response.
The data rate of this response is 106 kbps; then, the ST25TA64K changes the ascending
and descending data rates.
Table 50 gives the details of the PPS response.
Table 48. PPS command
Name
INS
PPS0
PPS1
CRC
Byte field
0xDX
0x11
1 byte
2 bytes
Bit field
b7-b4
b3-b0
-
0b0000
b3-b2
b1-b0
-
INS
Instruction code
DID
-
PPS1 is present
PPS1
RFU
Descending data rate
Ascending data rate
-
2 CRC bytes
Table 49. Ascending and descending data rate coding
Value
0b00
0b01
0b10
0b11
Data rate
106 kbps
RFU
RFU
RFU
Table 50. PPS response
Name
INS
-
PPS0
Byte field
0xDX
-
0x11
Bit field
b8-b5
b4-b1
-
Response code
DID field
2 CRC bytes



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