SR176 datasheet(22/35 Pages) STMICROELECTRONICS

Part #	SR176

Description	13.56 MHz, 176-bit short range contactless user EEPROM with 64-bit Unique ID

PDF	35 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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22 / 35 page

Device operations (instructions)

SR176

22/35

Figure 32.

PROTECT_BLOCK frame exchange between Reader and SR176

5.8

GET_PROTECTION

Command Code = 08h,0Fh

Prior to any GET_PROTECTION, the SR176 must have been set into the SELECTED state.

GET_PROTECTION allows the protection status of memory blocks 4 to 15 to be read.

When receiving the GET_PROTECTION command, the SR176 responds with the 16-bit

value of block 15 (Figure 35). It gives the status of the LOCK_REG and the Chip_ID of the

SR176.

Request parameters (Figure 33):

●

none

Response parameters (Figure 34):

●

Chip_ID: least significant Byte

●

LOCK_REG: most significant Byte

Figure 33.

GET_PROTECTION request format

Figure 34.

GET_PROTECTION response format

00h

AI07712B

LOCK_REG

Reader

SR176

CRCL CRCH EOF

SOF 09h

0Fh

No Response

SOF

PROTECT_BLOCK

CRCL

CRCH

EOF

AI07713B

08h

0Fh

8 bits

SOF

CRCL

CRCH

EOF

AI07714B

8 bits

Chip_ID

LOCK_REG

8 bits

SR176 Datasheet(PDF) 22 Page - STMicroelectronics

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