ST25DV64K datasheet(181/220 Pages) STMICROELECTRONICS

181 / 220 page

DocID027603 Rev 4

181/220

ST25DV04K ST25DV16K ST25DV64K

Device parameters

219

fSH

Subcarrier frequency high

FCC/32

423.7

-kHz

fSL

Subcarrier frequency low

FCC/28

484.2

-kHz

Time for ST25DVxxx response

4352/FC

318.6

320.9

323.

µs

Time between commands

4192/FC

309

311.5

314

µs

Time between commands

4384/FC

323.3

µs

Wt_Block

RF User memory write time

(including internal Verify)(5)

1 Block

5.2

4 Blocks

19.7

Wt_Byte

RF system memory write time

including internal Verify)(5)

1 Byte

4.9

Wt_MB

RF Mailbox write time (from VCD

request SOF to ST25DVxxx

response EOF)(5)(6)

256 Byte

80.7

Read_MB

RF Mailbox read time (from VCD

request SOF to ST25DVxxx

response EOF) (5)(6)

256 Byte

CTUN

Internal tuning capacitor in

SO8N(6)

f = 13.56 MHz

26.5

28.5

30.5

VBACK

Backscattered level as defined by

ISO test

-10

VMIN_1(3)

RF input voltage amplitude

between AC0 and AC1, VSS pin

left floating, VAC0-VAC1 peak to

peak(3)

Inventory and Read operations

4.8

Write operations

5.25

VMIN_2(3)

AC voltage between AC0 and VSS

or between AC1 and VSS(3)

Inventory and Read operations

2.25

Write operations

2.7

tBootRF

Without DC supply (No VCC)

Set up time

0.6

tRF_OFF RF OFF time

Chip reset

1. TA = -40 to 105 °C. Characterized only.

2. All timing characterizations were performed on a reference antenna with the following characteristics:

ISO antenna class1

Tuning frequency = 13.7 MHz

3. Characterized on bench.

4. Characterized at room temperature only, on wafer at POR Level.

5. For VCD request coded in 1 out of 4 and ST25DVxxx response in high data rate, single sub carrier.

6. The tuning capacitance value is measured with ST characterization equipment at chip Power On Reset. This

value is used as reference for antenna design. Minimum and Maximum values come from correlation with

industrial tester limits.

Table 214. RF characteristics(1)(2) (continued)

Symbol

Parameter

Condition

Min

Typ

Max

Unit

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