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參數(shù)資料
| 型號： | ISO15693 |
| 廠商： | Fujitsu Limited |
| 英文描述： | High-speed RFID LSI FerVID family |
| 中文描述： | 高速大規(guī)模集成電路的RFID書中家庭 |
| 文件頁數(shù)： | 3/45頁 |
| 文件大?。?/td> | 257K |
| 代理商： | ISO15693 |
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MB89R118
3
■
MEMORY MAP
This section describes the FRAM memory, which is the internal memory of the MB89R118.
FRAM Configuration
The FRAM has 2,000 bytes for use as user area and 48 bytes for use as system area.
The FRAM memory areas consist of a total of 256 blocks (250 blocks of user area and 6 blocks of system area).
Each block can store 64 bits (8 bytes) of data.
The block is the unit used for the writing and reading of FRAM data. The memory map of the FRAM is shown below.
FRAM configuration
Area
Block No.
Blocks “00
H
” to “F9
H
” are user area. The user area is defined as an area that can be accessed when the
corresponding block address is specified. On the other hands, Blocks “FA
H
” to “FF
H
” are system area. The system
area is defined as an area that can be accessed only with a specific command (request).
The system area consists of 6 blocks and contains UID, AFI, DSFID, EAS bit, and security status (can write or
cannot write) data for individual block. UID is fixed and cannot be updated. AFI, DSFID, and EAS bit are written
at the factory, and can be updated and locked (disable to write) with commands. (Only EAS bit cannot be locked.)
As shown in above, “FA
H
” holds the UID, and “FC
H
” to “FF
H
” hold the security status information on individual
user areas.
As shown in “
Structure of FB
H
”, “FB
H
” contains AFI, AFI lock status byte, DSFID, DSFID lock status byte, and
EAS bit. As shown in the next following figure system areas, “FC
H
” to “FF
H
” contains block security status data.
* : Reserved for future use
Details
Data read
Data write
User area (2000 bytes)
00
H
to F9
H
User area
Yes
Yes
System area (48 bytes)
FA
H
UID (64 bits)
Yes
No
FB
H
AFI, DSFID, EAS,
security status
Yes
Limited
FC
H
to FF
H
Block security status
Yes
No
MSB
64
RFU*
DSFID
56
33
32
25
LSB
AFI
8
1
AFI
Lock
Status
16
9
DSFID
Lock
Status
57
EAS
Status
24
17
Structure of “FB
H
”
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