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| 型號： | MFRC50001T |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Highly integrated ISO-IEC 14443 A reader IC |
| 封裝： | MFRC50001T/0FE<SOT287-1 (SO32)|<<http://www.nxp.com/packages/SOT287-1.html<1<week 15, 2005,; |
| 文件頁數(shù)： | 81/110頁 |
| 文件大?。?/td> | 841K |
| 代理商： | MFRC50001T |
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MFRC500_33
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.3 — 15 March 2010
048033
81 of 110
NXP Semiconductors
MFRC500
Highly Integrated ISO/IEC 14443 A Reader IC
11.5 Error handling during command execution
If an error is detected during command execution, the PrimaryStatus register Err flag is
set. The microprocessor can evaluate the status flags in the ErrorFlag register to get
information about the cause of the error.
Table 141. ErrorFlag register error flags overview
Error flag
KeyErr
AccessErr
FIFOOvlf
CRCErr
FramingErr
ParityErr
CollErr
11.6 MIFARE security commands
11.6.1
LoadKeyE2 command 0Bh
Table 142. LoadKeyE2 command 0Bh
Command
Value
The LoadKeyE2 command interprets the first two bytes found in the FIFO buffer as the
EEPROM starting byte address. The EEPROM bytes starting from the given starting byte
address are interpreted as the key when stored in the correct key format as described in
Section 9.2.3.1 “Key format” on page 13
. When both argument bytes are available in the
FIFO buffer, the command executes.
The LoadKeyE2 command can only be started by the microprocessor and it automatically
stops after copying the key from the EEPROM to the key buffer.
11.6.1.1
Relevant LoadKeyE2 command error flags
If the key format is incorrect (see
Section 9.2.3.1 “Key format” on page 13
) an undefined
value is copied into the key buffer and the KeyErr flag is set.
11.6.2
LoadKey command 19h
Table 143. LoadKey command 19h
Command Value
Related commands
LoadKeyE2, LoadKey
WriteE2, ReadE2, LoadConfig
no specific commands
Receive, Transceive, CalcCRC
Receive, Transceive
Receive, Transceive
Receive, Transceive
Action
Arguments and
data
start address LSB
start address MSB
Returned
data
-
-
LoadKeyE2
0Bh
reads a key from the EEPROM and
puts it into the internal key buffer
Action
Arguments and
data
byte 0 (LSB)
byte 1
…
byte 10
byte 11 (MSB)
Returned
data
-
-
-
-
-
LoadKey
19h
reads a key from the FIFO buffer and puts it
into the key buffer
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| MFRC50001T/0FE,112 | 功能描述:RFID應(yīng)答器 MIFARE READER RoHS:否 制造商:Murata 存儲容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
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