Philips Semiconductors

Short Form Specification, Revision 3.0 October 2003

UCODE HSL

SL3ICS30 01

5

1.6 Supported Commands

1.6.1 Selection Commands

GROUP_SELECT_EQ, GROUP_SELECT_NE, GROUP_SELECT_GT, GROUP_SELECT_LT

GROUP_UNSELECT_EQ, GROUP_UNSELECT_NE, GROUP_UNSELECT_GT, GROUP_UNSELECT_LT

GROUP_SELECT_EQ_FLAGS, GROUP_SELECT_NE_FLAGS

GROUP_UNSELECT_EQ_FLAGS, GROUP_UNSELECT_NE_FLAGS

MULTIPLE_UNSELECT

1.6.2 Identification Commands

FAIL, SUCCESS, RESEND, INITIALIZE

1.6.3 Data Access

DATA_READ, READ, READ_PORT, READ_VARIABLE,

WRITE, WRITE_MULTIPLE, WRITE4BYTE, WRITE4BYTE_MULTIPLE

LOCK, QUERY_LOCK, READ_VERIFY, READ_VERIFY_4BYTE

1.7 Memory Organization

The 2048 bit EEPROM memory is grouped in UID memory, user memory and lock information. A byte is the

smallest access unit. All bytes can be addressed by read and write commands.

1.7.1 Write Access Conditions

Each byte in the user memory can be write protected individually. Write protected blocks can never be written

again.

1.7.2 Serial Number

Serial numbers, which can not be altered, guarantee the uniqueness of each label.

1.7.3 Configuration of delivered ICs

UCODE HSL ICs are delivered with the following configuration from Philips:

•

Serial number is unique and read only

•

Write Access conditions allow changing all bytes except those containing the serial number

•

User data memory is not defined