Rainbow-electronics MAX66120 Bedienungsanleitung PDF herunterladen (Seite 16)

REQUEST FLAGS COMMAND UID

(1 Byte) 2Bh (8 Bytes)

REQUEST FLAGS COMMAND UID BLOCK NUMBER NEW BLOCK DATA

(1 Byte) 21h (8 Bytes) (1 Byte) (8 Bytes)

RESPONSE

FLAGS

INFO

FLAGS

UID DSFID AFI

NUMBER OF

BLOCKS

MEMORY BLOCK

SIZE

IC REFERENCE

00h 0Fh (8 Bytes) (1 Byte) (1 Byte) 12h 07h (1 Byte)

MAX66120

ISO 15693-Compliant 1Kb Memory Fob

16 ______________________________________________________________________________________

FAILING COMMANDS

ERROR DESCRIPTION

ERROR

CODE

Get System

Information

Write Single

Block

Lock Block

Read Single

Block

Read Multiple

Blocks

Custom

Read Block

Write AFI

Lock AFI

Write DSFID

Lock DSFID

Invalid block number 10h 

Already locked 11h  

Write access failed because block is locked 12h 

Table 5. Error Code Matrix

Detailed Command Descriptions

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.

Get System Information

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.

Write Single Block

The normal way to write data to the device is through

the Write Single Block command. This command uses

one command-specific parameter, which is the memory

block number. Valid block numbers are 00h to 11h.

Writing a block takes t

PROG

. The response is transmit-

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.

If this command is processed without any error, the slave responds with a response flags byte of 00h.

Request Data for the Get System Information Command

Response Data for the Get System Information Command (No Error)

Request Data for the Write Single Block Command*

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 22 23 24

MAX66120 1

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