SR176A4T1GE STMicroelectronics, SR176A4T1GE Datasheet - Page 14

• Manufacturer Part Number: SR176A4T1GE
• Manufacturer: STMicroelectronics

Specifications of SR176A4T1GE

• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Compliant

Device operations (instructions)
5
14/35
Device operations (instructions)
All instructions, data and the CRC are transmitted to the SR176 in 10-bit character format
using ASK modulation. The start bit (b
received by the SR176 on the antenna is demodulated by the 10% ASK demodulator, and is
decoded by internal logic. Prior to any operation, the SR176 must have been previously
activated by an INITIATE command (as shown in
SR176 must start with a Start Of Frame, followed by one or more data characters, and is
ended by two CRC bytes and the End Of Frame. When an invalid frame is decoded by the
SR176 (because of a wrong instruction or CRC error), the memory does not send any error
code.
When a valid frame is received, the SR176 may have to send back data to the reader. For
this, it sends 10-bit characters back, with SOF, CRC and EOF, using the BPSK coding. The
transfer is ended by the SR176 sending the EOF.
Figure 13. State transition diagram
Out of
Field
DESELECTED
SELECT(Chip_ID)
SELECT( = Chip_ID)
/
Out of
Field
0
Out of
Field
of the 10 bits) is sent first. The command frame
GET_PROTECTION()
PROTECT_BLOCK()
WRITE_BLOCK()
SELECT(Chip_ID)
READ_BLOCK()
POWER-OFF
SELECTED
ACTIVE
READY
Figure
INITIATE()
SELECT(Chip_ID)
In Field
13). Each frame transmitted to the
COMPLETION
DEACTIVATED
Out of
Field
AI09063B
SR176