BL7431A View Datasheet(PDF) - Shanghai Belling Co., Ltd.
Part Name
Description
MFG CO.
'BL7431A' PDF : 4 Pages View PDF
BL7431A 256-Bit EEPROM Logical
Encrypted Chip
Partition of EEPROM
Address
Area1
Area2
Area3
Area4
0~15
16~23
24~63
64
65~71
72~79
80~103
Area5
Area6
Area7
104~143
144
145~151
152~159
Area8 160~183
Area9 184~255
Before
personalize
（transmissio
n password
not verified）
ROM
ROM
ROM
ROM
ROM
PROM
ROM(can not
be read)
ROM
ROM
ROM
ROM
ROM
ROM
Memory Function Type
Before
personalize
（Transmissio
n password
verified）
ROM
PROM
PROM
PROM
PROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
EEPROM
After personalize
Second
password
not
verified
Second
password
verified
FG=1
ROM
ROM
ROM
ROM
ROM
ROM
ROM
ROM
ROM
EEPROM
EEPROM
EEPROM
PROM
ROM
（can not
be read）
ROM
（can not
be read）
EEPROM
EEPROM
EEPROM
Function
Chip Manufacture
Code
Card Manufacture
Code
Issue Code
Personalized Flag
Used as error
counter before
personalization
Store the
transmission
password before
personalization
After
personalization,
used as common
memory
Issue Extend Code
FG Flag
Second Error
Counter
Password of User
Data
User Data
Area10 256~511
ROM
EEPROM
EEPROM
User Data(only in
BL7431B )
http://www.belling.com.cn
-2-
Total 4 Pages
8/16/2006
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