MAX66120 MAXIM [Maxim Integrated Products], MAX66120 Datasheet - Page 16

• Manufacturer Part Number: MAX66120
• Description: ISO 15693-Compliant 1Kb Memory Fob Powered Entirely Through the RF Field
• Manufacturer: MAXIM [Maxim Integrated Products]

ISO 15693-Compliant 1Kb Memory Fob
Table 5. Error Code Matrix
In the request data graphics of this section, the UID
field is shaded to indicate that the inclusion of the UID
depends on the address mode.
The Get System Information command allows the mas-
ter to retrieve technical information about the
MAX66120. The IC reference code indicates the die
revision in hexadecimal format, such as A1h, A2h, B1h,
etc.
The normal way to write data to the device is through
the Write Single Block command. This command uses
* If this command is processed without any error, the slave responds with a response flags byte of 00h.
16
Invalid block number
Already locked
Write access failed because block is locked
RESPONSE
REQUEST FLAGS
FLAGS
Detailed Command Descriptions
______________________________________________________________________________________
00h
(1 Byte)
REQUEST FLAGS
ERROR DESCRIPTION
(1 Byte)
FLAGS
INFO
0Fh
Get System Information
Response Data for the Get System Information Command (No Error)
(8 Bytes)
COMMAND
UID
Write Single Block
21h
(1 Byte)
DSFID
Request Data for the Get System Information Command
Request Data for the Write Single Block Command*
ERROR
CODE
10h
11h
12h
(1 Byte)
COMMAND
(8 Bytes)
AFI
2Bh
UID
one command-specific parameter, which is the memory
block number. Valid block numbers are 00h to 11h.
Writing a block takes t
ted after the memory is updated.
Depending on the protection settings of the memory
location to be updated, the MAX66120 manipulates
data as it arrives in a buffer. Upon receiving a Write
Single Block request for a write-protected location (e.g.,
a self-locking nibble or byte in memory block 11h), the
buffer is loaded with the data already in memory, rather
than the data transmitted in the request. Similarly, if the
target memory block is in EPROM mode, the buffer is
loaded with the bitwise logical AND of the transmitted
data and data already in memory. In all other cases, the
data sent by the master arrives in the buffer unaltered.
NUMBER OF
BLOCKS
12h
BLOCK NUMBER
FAILING COMMANDS
(1 Byte)
MEMORY BLOCK
PROG
SIZE
07h
. The response is transmit-
(8 Bytes)
UID
NEW BLOCK DATA
IC REFERENCE
(8 Bytes)
(1 Byte)