4*9939
EM9939 MIFARE HANDHELD READER
SPECIFICATION
. Card / Tag : Philips one S50 chips. ISO14443A standard
. Read range : >= 5cm for standard ISO card
. Size (mm) :
. Weight (gm) :
. Operating temperature : -10 C to 70 C
. Operating Humidity : 0% to 90%
. Operating Ampere : 80mA
.Operating Voltage : 9VDC rechargeable batter y
or 7.5VDC to 12VDC power adaptor
. Low power consumption design : If no card / tag presents
o
o
.Memory : Maximum 3000 records, each record has 8 bytes data.
. Clock : Dallas clock IC .
. Safety : Data retention for 20 years
. Data communication : RS232 interface .
Parameters : Baud rate : 9600,
Data : 8, Stop bit : 1, Check bit : N
. English Text Panel : 16 x 2 Text. Display time &
Card CSN or 8 bytes card / tag data.
. Audio / Visual : LED and Buzzer
.Battery Low indication : Battery low, beep sound indication
within 15 seconds, reader power off automatically. Fully
charge batter y can read XX piece cards / tags.
DATA FORMAT
1 Philips Mifare card CSN (4 bytes)+4 bytes "0"
"00000000"+ Byte3 + Byte2 + Byte1+ Byte0
2 Philips Mifare card block data ( 8 bytes)
Absolute Block 1 to Block 63 excludes sector trailer. Byte 0 first, 8 bytes data
The 1024 x 8 bit EEPROM memory is organized
in 16 sectors with 4 blocks of 16 bytes each.
In the erased state the EEPROM cells are read as a logical "0".
in the written state as a logical"1".
Byte Number within a Block
Sector
Block
15
3
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Description
Key A
Access Bits
Key B
2
Data
1
Data
Data
0
14
3
Key A
Access Bits
Key B
Sector Trailer 14
2
Data
1
Data
0
Data
:
:
:
:
:
:
1
3
0
Sector Trailer 15
Key A
Access Bits
Key B
Sector Trailer 1
2
Data
1
Data
0
Data
3
Key A
Access Bits
Key B
Sector Trailer 0
2
Data
1
Data
0
Manufacturer Block
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