Shenzhen TestPad Electronic Co., Ltd.
http://www.test-pad.com
29
Read DS2502
This tester can read all the data in the DS2502-compatible IDs, analyze the data, and make
judgment and comparison.
Connect the ID terminal of the battery to that of the tester, and connect the cathode of the battery
to the P- terminal of the tester. Select this function, and then press ENTER to read ID. The test
result is as shown below.
The read succeeds, and the description of the displayed items is as follows:
ID function code: 89
ID serial number: 500001EFC7C9 (in hex.)
CRC data: 82
Press DOWN to read other data, which is displayed as follows:
The first column (for example 00: 06: 0C: 12) displays the start addresses, followed by the data.
The data from address “00” is 5E 01 98 00 00 14 14 F4, etc. Press DOWN to view the next screen,
and press DOWN to view the previous screen.
Note: The last two items in the last screen respectively indicate the CRC data generated in the chip
and the CRC data calculated by the tester. In general, the two values are the same. If there are
different, it indicates that the read data is incorrect.
If necessary, press ENTER to conduct another test.
If the screen is as shown below, it indicates that the chip is abnormal or in poor contact and thus
cause the failure in data reading or CRC.
DS2502 ROM CODE
CRC Serial number FC
82 500001EFC7C9 89
Press DOWN continue.
00: 5E 01 98 00 00 14
06: 14 01 F4 3C 57 0E
0C: 00 00 00 19 32 00
12: 00 00 00 00 00 00
ERROR!!!
no IC or CRC error
