H4006501IC datasheet(8/10 Pages) EMMICRO

Part #	H4006501IC

Description	13.56MHz 64 Data bit Read Only Contactless Identification Device

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Manufacturer	EMMICRO [EM Microelectronic - MARIN SA]

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EMMICROELECTRONIC-MARINSA

H4006

8

Power Supply Management

For a correct operation, the device must be

initialised. When the transponder is put in the RF

field, the supply voltage increases until it achieves Vr

limit (see Figure 7). During this time and for an

additionnal 64 bit period, the modulator switch is on

and the device initialises its internal logic.

At this point, the data transmission starts and runs

while the supply voltage is higher than Vmin. If the

supply voltage decreases under this limit, the device

is again in an initialising state and the modulator is on.

Vmax (voltage clipping)

Vmin

Vr (Read wake up)

chip operating voltage range : from Vmin to Vmax

ε

chip on board supply voltage

time

supply voltage

VDD

time

modulator

ON/OFF

OFF

ON

READ

64 bits

period

Figure 7

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