AN2269 datasheet(8/25 Pages) STMICROELECTRONICS

Part #	AN2269

Description	Using the ST8024 Smartcard Interface

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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Emergency Deactivation/Fault Detection

AN2269 - Application Note

8/25

Figure 5.

ST8024 Automatic Deactivation Sequence

Note:

Deactivation: VTH2 ≈ 2.393V.

Activation: As VDD ≥ VTH2 + VHYS2 (≈ 2.498V) AND CMDVcc goes low, VCC goes high.

Legend:

1.

CH1 = CMDVcc

2.

CH2 = VCC

3.

CH3 = OFF

4.

CH4 = VDD

5.

Conditions: VDD = 3.3V; VDDP = 5V; 5/3V = H

6.

Mode: ACTIVE

7.

fXTAL = 10MHz; CLKDIV2 = 0V

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