Comparison between low-density and high-density devices

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1

Comparison between low-density and high-density

devices

This chapter highlights the differences of RF addressing modes between the ISO/IEC 15693

family products.

1.1

Overview

The STMicroelectronics ISO/IEC 15693 family can be split as shown in Table 2. The

products can be addressed only by the RF interface.

The M24LR64-R, M24LR64E-R, M24LR16E-R and LRiS64k devices have an extended

memory and some RF commands shall be updated. Details are given in Chapter 1.4:

Memory mapping of ISO/IEC 15693 products.

1.2

IC reference of ISO/IEC 15693 products

The IC reference (IC ref) is a byte that identifies an STMicroelectronics product. Each

product of the ISO/IEC 15693 family has its own and can be retrieved by issuing the

GetSystemInfo RF command.

Table 3 lists the different IC references of the ISO/IEC 15693 family products.

1.3

How to identify the ISO/IEC 15693 products

There are two ways to identify the STMicroelectronics ISO/IEC 15693 products:

●

Analyze the product code field of the UID.

●

Analyze the IC reference value of the GetSystemInfo response.

Table 2.

Low-density and high-density devices

Access type

Low-density

High-density

M24LR04E-R

M24LR64-R

M24LR64E-R

M24LR16E-R

RF access

LRi1K

LRiS64K

LRi2K

LRiS2K

Table 3.

IC references of the ISO/IEC 15693 family products

LRi1K

LRi2K

LRiS2K

LRiS64K M24LR04E-R

M24LR16E-R M24LR64E-R M24LR64-R

IC ref

0b010000xx 0b001000xx 0b001010xx

0x44

0x5A

0x4E

0x5E

0x2C