SR176 datasheet(3/5 Pages) STMICROELECTRONICS

部件名	SR176

功能描述	13.56 MHz Short Range Contactless Memory Chip 176 bit USER EEPROM and 64-bit Unique ID

PDF	5 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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SR176

MEMORY MAPPING

The SR176 is organized as 16 blocks of 16 bits, as

shown in Figure 3.

The first four blocks, from location 0 to 3, are used

to store read-only data. They store the 64-bit UID.

This value cannot be modified.

Blocks from locations 4 to 14 offer a 176-bit EE-

PROM user area in which the application can store

its data values. Block 15 contains the OTP

LOCK_REG and the programmed Chip_ID.

The PROTECT_BLOCK command is used to lock

write access to blocks 4 to 15 by a group of 2

blocks.

The GET_PROTECTION command gives the sta-

tus of the protection of blocks 4 to 15.

Figure 3. SR176 Memory Mapping

Block

Address

MSb

LSb

b15

16-bit block

Description

UID0

UID1

UID2

UID3

64-bit UID

ROM

User Area

Lockable EEPROM

Chip_ID

Reserved

OTP LOCK_REG

ai07699

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