Datasheet

Electrical characteristics ST8024L
16/35 Doc ID 17709 Rev 5
Table 17. Card presence inputs (pins PRES and PRES)
Symbol Parameter
(1)
Test conditions Min. Typ. Max. Unit
V
IL
Low level input voltage -0.3 - 0.3 V
DD
V
V
IH
High level input voltage 0.7 V
DD
-V
DD
+0.3 V
|I
LIH
|
High level input leakage
current
V
IH
= V
DD
-5µA
|I
LIL
|
Low level input leakage
current
V
IL
= 0 - 5 µA
1. V
DD
= 3.3 V, V
DDP
= 5 V, f
XTAL
= 10 MHz, unless otherwise noted. Typical values are at T
A
= 25 °C
Pin PRES is active low; pin PRES is active high, see Figure 8 and Figure 9; PRES has an integrated 1.25 µA current source
to GND. (PRES to V
DD
); the card is considered present if at least one of the inputs PRES or PRES is active.
Table 18. Interrupt output (pin OFF NMOS drain with integrated 20 kΩ pull-up resistor to V
DD
)
Symbol Parameter
(1)
Test conditions Min. Typ. Max. Unit
V
OL
Low level output voltage I
OL
= 2 mA 0 0.3 V
V
OH
High level output voltage I
OH
= –15 µA 0.75 V
DD
V
R
PU
Integrated pull-up resistor 20 kΩ pull-up resistor to V
DD
16 20 24 kΩ
1. V
DD
= 3.3 V, V
DDP
= 5 V, f
XTAL
= 10 MHz, unless otherwise noted. Typical values are at T
A
= 25 °C.
Table 19. Protection and limitation
Symbol Parameter
(1)
Test conditions Min. Typ. Max. Unit
|I
CC(SD)
| Shutdown and limitation current pin V
CC
90 120 mA
I
I/O(lim)
Limitation current pins I/O, AUX1 and AUX2 –15 15 mA
I
CLK(lim)
Limitation current pin CLK –70 70 mA
I
RST(lim)
Limitation current pin RST –20 20 mA
T
SD
Shutdown temperature 150 °C
1. V
DD
= 3.3 V, V
DDP
= 5 V, f
XTAL
= 10 MHz, unless otherwise noted. Typical values are at T
A
= 25 °C.
Table 20. Timing
Symbol Parameter
(1)
Test conditions Min. Typ. Max. Unit
t
ACT
Activation time
For V
CC
= 5 V
(See Figure 5)
50 220 µs
t
DE
Deactivation time (See Figure 7)5080100µs
t
3
Start of the window for sending CLK to card (See Figure 6)130µs
t
5
End of the window for sending CLK to card (See Figure 6) 140 µs
t
debounce
Debounce time pins PRES and PRES (See Figure 8)5811ms
1. V
DD
= 3.3 V, V
DDP
= 5 V, f
XTAL
= 10 MHz, unless otherwise noted. Typical values are at T
A
= 25 °C.