ST8024 データシートの表示（PDF） - STMicroelectronics
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ST8024 Datasheet PDF : 31 Pages
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ST8024
Electrical characteristics
Table 9.
Symbol
Crystal connection (pins XTAL1 and XTAL2) (VDD = 3.3 V, VDDP = 5 V, fXTAL = 10 MHz,
unless otherwise noted. Typical values are to TA = 25 °C)
Parameter
Test conditions
Min. Typ. Max. Unit
CXTAL1,2
External capacitance on pins XTAIL1,
XTAIL2
Depends on type of
crystal or resonator used
15
pF
fXTAL
fXTAL1
VIH
VIL
Crystal frequency
Frequency applied on pin XTAL1
High level input voltage on pin XTAIL1
Low level input voltage on pin XTAIL1
2
0
0.7 VDD
-0.3
26 MHz
26 MHz
VDD+0.3 V
+0.3VDD V
Table 10.
Symbol
Data lines (pins I/O, I/OUC, AUX1, AUX2, AUX1UC AND AUX2UC) (VDD = 3.3 V, VDDP =
5 V, fXTAL = 10 MHz, unless otherwise noted. Typical values are to TA = 25 °C)
Parameter
Test conditions
Min. Typ. Max. Unit
tD(I/O-I/OUC), I/O to I/OUC, I/OUC to I/O falling edge
tD(I/OUC-I/O) delay
tpu
Active pull-up pulse width
fI/O(MAX) Maximum frequency on data lines
CI
Input capacitance on data lines
200 ns
100 ns
1 MHz
10
pF
Table 11.
Symbol
Data lines to card reader (pins I/O, AUX1 AND AUX2 with integrated 11 kΩ pull-up
resistor to VCC (VDD = 3.3 V, VDDP = 5 V, fXTAL = 10 MHz, unless otherwise noted. Typical
values are to TA = 25 °C)
Parameter
Test conditions
Min. Typ. Max. Unit
VO(inactive) Output voltage
IO(inactive) Output current
VOH High level output voltage
VOL Low level output voltage
VIH
VIL
|ILIH|
High level input voltage
Low level input voltage
High level input leakage
current
NO LOAD
0
Inactive mode
IO(inactive)=1mA
Inactive mode; pin grounded
No DC Load
5 and 3 V cards; IOH < - 40µA
|IOH| ≥ 10mA
IOL = 1 mA
IOL ≥ 15 mA
0.9 VCC
0.75 VCC
0
0
VCC-0.4
1.5
0.3
VIH = VCC
0.1
V
0.3
-1
mA
VCC+0.1
VCC+0.1 V
0.4
0.2
V
VCC
VCC+0.3 V
0.8
V
10
µA
|IIL| Low level input current
VIL = 0 V
RPU Integrated pull-up resistor Pull-up resistor to VCC
9
tT(DI) Data input transition time VIL max to VIH min.
tT(DO)
Data output transition time
VO = 0 to VCC; CL ≤ 80 pF; 10%
to 90%
600
µA
11
13
kΩ
1.2
µs
0.1
µs
IPU Current when pull-up active VOH = 0.9VCC; CL = 80 pF
-1
mA
11/31
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