MAXREADERKIT-CN Cypress Semiconductor, MAXREADERKIT-CN Datasheet - Page 39

• Manufacturer Part Number: MAXREADERKIT-CN
• Description: Memory IC Development Tools MaxReader Dev Kit (Tuned to China)
• Manufacturer: Cypress Semiconductor

Specifications of MAXREADERKIT-CN

• Rohs: yes
• Product: Development Kit
• Tool Is For Evaluation Of: WM72016
• Memory Size: 16 Kbit
• Memory Type: F-RAM with Gen-2 RFID
• Operating Supply Voltage: 5 V
• Interface Type: DSPI Serial
• Factory Pack Quantity: 1

Syntax
Function
Parameters
Description
Syntax
Function
Parameters
Description
Syntax
Function
Parameters
Description
4.6 Block Permalock
The Gen2 block permalock function allows discrete USER memory blocks of data to be permanently locked. This
functionality allows part of the USER memory to be locked while allowing other USER memory blocks of data to be
written. This is useful in applications where a portion of the USER bank memory bank is reserved for application
settings and/or definitions creating static and dynamic memory regions within the USER memory bank. This becomes
especially useful considering the large size of the MaxArias USER memory bank. The alternative to block locking
(available only for the USER memory bank) is to permanently lock the entire USER memory bank which in some
cases may not be desirable. The block lock status can be set and read through the following commands:
USER memory blocks that have been block-locked are permanently locked and may not be unlocked.
4.5.10 G2LOCKUSER: Set USER Lock
4.5.11 G2PLOCKUSER: Set USER Permalock
4.5.12 G2ULOCKUSER: Clear USER Lock
G2BLKPERMALOCK_LK
G2BLKPERMALOCK_RD
G2LOCKUSER
Sets the USER memory bank lock bit
None
Performs the lock function on the entire USER memory bank. Prior to executing the G2LOCKUSER
command, the tag must be in the secured state. A tag whose access password is null will
automatically advance from the open state to the secured state during arbitration; a tag whose access
password is non-zero remains in the open state until the tag has successfully transitioned to the
secured state – this is done through the G2ACC command and the valid respective passwords. Once
locked, the USER memory bank will still be readable by the interrogator. The USER memory bank
may be unlocked while the tag is in the secured state through the G2ULOCKUSER command.
G2PLOCKUSER
Sets the USER memory bank permalock bit
None
Sets the permalock bit of the USER memory bank. Once the permalock bit has been asserted, the
state of the USER memory bank lock bit may no longer be altered, whether a logic 0 or a logic 1.
G2ULOCKUSER
Clears the USER memory bank lock bit
None
Clears the lock bit of the USER memory bank. Prior to executing the G2ULOCKUSER command,
the tag must be in the secured state. A tag whose access password is null will automatically advance
from the open state to the secured state during arbitration; a tag whose access password is non-zero
remains in the open state until the tag has successfully transitioned to the secured state – this is done
through the G2ACC command and the valid respective passwords.
MaxReader CLI User Guide v1.05
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