SRI4K_11 datasheet(40/46 Pages) STMICROELECTRONICS

Part #	SRI4K

Description	13.56 MHz short-range contactless memory chip with 4096-bit EEPROM and anticollision functions

PDF	46 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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40 / 46 page

DC and ac parameters

SRI4K

40/46

Doc 11605 Rev 5

Figure 51.

SRI4K synchronous timing, transmit and receive

All timing measurements were performed on a reference antenna with the following characteristics:

External size: 75 mm x 48 mm

Number of turns: 3

Width of conductor: 1 mm

Space between 2 conductors: 0.4 mm

Value of the coil: 1.4 µH

Tuning Frequency: 14.4 MHz.

tRFF

tRFR

tRFSBL

tMIN CD

ƒcc

ASK Modulated signal from the Reader to the Contactless device

DATA

EOF

847KHz

tDR

FRAME Transmission between the reader and the contactless device

FRAME Transmitted by the reader in ASK

FRAME Transmitted by the SRI4K

tDR

in BPSK

DATA

tDA

SOF

1 0

1 1

START

tRFSBL

tJIT

tRFSBL

Data jitter on FRAME Transmitted by the reader in ASK

AI10893

SRI4K Datasheet(PDF) 40 Page - STMicroelectronics