M24LR64-R_12 datasheet(116/128 Pages) STMICROELECTRONICS

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RF electrical parameters

M24LR64-R

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Doc ID 15170 Rev 14

RF electrical parameters

This section summarizes the operating and measurement conditions, and the DC and AC

characteristics of the device in RF mode. The parameters in the DC and AC Characteristic

tables that follow are derived from tests performed under the Measurement Conditions

summarized in the relevant tables. Designers should check that the operating conditions in

their circuit match the measurement conditions when relying on the quoted parameters.

Table 105. RF characteristics(1) (2)

Symbol

Parameter

Condition

Min.

Typ.

Max.

Unit

fCC

External RF signal frequency

13.553

13.56

13.567

MHz

H_ISO

Operating field according

to ISO

TA = 0 °C to 50 °C

150

5000

mA/m

H_Extende

Operating field in extended

temperature range

TA = –40 °C to 85 °C

150

3500

mA/m

MICARRIER

10% carrier modulation

index(3) (4)

MI=(A-B)/(A+B)

150 mA/m > H_ISO > 1000 mA/m

H_ISO > 1000 mA/m

tRFR,tRFF

10% rise and fall time

0.5

3.0

µs

tRFSBL

10% minimum pulse width

for bit

7.1

9.44

µs

MICARRIER 100% carrier modulation index MI=(A-B)/(A+B)

100

tRFR,tRFF

100% rise and fall time

0.5

3.5

µs

tRFSBL

100% minimum pulse width

for bit

7.1

9.44

µs

tMIN CD

Minimum time from carrier

generation to first data

From H-field min

0.1

fSH

Subcarrier frequency high

FCC/32

423.75

kHz

fSL

Subcarrier frequency low

FCC/28

484.28

kHz

Time for M24LR64-R response 4224/FS

318.6

320.9

323.3

µs

Time between commands

4224/FS

309

311.5

314

µs

RF write time (including

internal Verify)

5.75

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