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ST8024CDR Fiches technique(PDF) 9 Page - STMicroelectronics

No de pièce ST8024CDR
Description  SMARTCARD INTERFACE
Download  23 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST8024CDR Fiches technique(HTML) 9 Page - STMicroelectronics

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Table 16: Card Presence Inputs (PINS PRES AND PRES)
(VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless otherwise noted. Typical values are to Ta = 25°C) (Note
6)
Table 17: Interrupt Output (PIN OFF NMOS Drain With Integrated 20 k
PULL-UP Resistor To
VDD); (VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless otherwise noted. Typical values are to Ta = 25°C)
Table 18: Protection And Limitation (VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless otherwise noted.
Typical values are to Ta = 25°C)
Table 19: Timing (VDD = 3.3V, VDDP = 5V, fXTAL = 10MHz, unless otherwise noted. Typical values
are to Ta = 25°C)
Note 1: All parameters remain within limits but are tested only statistically for the temperature range. When a parameter is specified as a
function of VDD or VCC it means their actual value at the moment of measurement.
Note 2: To meet these specifications, pin VCC should be decoupled to CGND using two ceramic multilayer capacitors of low ESR both with
values of 100 nF and 100 nF (see Fig.10).
Note 3: Permitted capacitor values are 100 + 100 nF, or 220 nF.
Note 4: Transition time and duty factor definitions are shown in Fig.3;
δ = t1/(t1+ t2).
Note 5: Pin CMDVCC is active LOW; pin RSTIN is active HIGH; for CLKDIV1 and CLKDIV2 functions see Table 20.
Note 6: Pin PRES is active LOW; pin PRES is active HIGH see Figs. 8 and 9; PRES has an integrated 1.25 µA current source to GND
(PRES to VDD); the card is considered present if at least one of the inputs PRES or PRES is active.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VIL
Input Voltage LOW
-0.3
0.3 VDD
V
VIH
Input Voltage HIGH
0.7 VDD
VDD+0.3
V
|ILIH|
Input Leakage Current HIGH VIH = VDD
5µA
|ILIL|
Input Leakage Current LOW
VIL = 0
5
µA
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VOL
Low Level Output Voltage
IOL = 2 mA
0
0.3
V
VOH
High Level Output Voltage
IOH = -15 µA
0.75 VDD
V
RPU
Integrated pull-up resistor
20k
Ω Pull-up resistor to VDD
16
20
24
k
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
|ICC(SD)| Shutdown and limitation current pin
VCC
90
120
mA
II/O(lim) limitation current pins I/O, AUX1 and
AUX2
-15
15
mA
ICLK(lim) limitation current pin CLK
-70
70
mA
IRST(lim) limitation current pin RST
-20
20
mA
TSD
Shut down temperature
150
°C
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
tACT
Activation time
(See Fig. 5)
50
220
µs
tDE
Deactivation time
(See Fig. 7)
50
80
100
µs
t3
Start of the window for sending CLK
to the card
(See Fig. 6)
50
130
µs
t5
End of the window for sending CLK to
card
(See Fig. 6)
140
220
µs
tdebounce Debounce time pins PRES and PRES (See Fig. 8)
5
8
11
ms


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