Datasheet

ST8024 Electrical characteristics
9/31
4 Electrical characteristics
V
DD
= 3.3 V, V
DDP
= 5 V, f
XTAL
= 10 MHz, unless otherwise noted. Typical values are to
T
A
= 25 °C.
Table 6. Electrical characteristics over recommended operating condition
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
DD
Supply voltage 2.7 6.5 V
V
DDP
Supply voltage for the
voltage doubler
V
CC
= 5V; |I
CC
| < 80 mA 4.0 5 6.5
V
V
CC
= 5V; |I
CC
| < 20 mA 3.0 6.5
I
DD
Supply current
Card Inactive 1.2
mA
Card Active; f
CLK
= f
XTAL
; C
L
= 30pF 1.5
I
DDP
DC-DC converter supply
current
Inactive mode 0.1
mA
Active mode; f
CLK
= f
XTAL
; C
L
= 30pF; |I
CC
|
= 0
10
V
CC
= 5V; |I
CC
| = 80 mA 200
V
CC
= 3V; |I
CC
| = 65 mA 100
V
th2
Falling threshold voltage
on V
DD
no external resistors at pin PORADJ;
V
DD
level falling
2.35 2.45 2.55 V
V
HYS2
Hysteresis of threshold
voltage V
th2
no external resistors at pin PORADJ 50 100 150 mV
V
th(ext)rise
External rising threshold
voltage on V
DD
external resistor bridge at pin PORADJ;
V
DD
level rising
1.25 1.28 1.31 V
V
th(ext)fall
External falling threshold
voltage on V
DD
external resistor bridge at pin PORADJ;
V
DD
level falling
1.19 1.22 1.25 V
V
HYS(ext)
Hysteresis of threshold
voltage V
th(ext)
external resistor bridge at pin PORADJ 30 60 90 mV
ΔV
HYS(ext)
Hysteresis of threshold
voltage V
th(ext)
variation
with temperature
external resistor bridge at pin PORADJ 0.25 mV/K
t
W
Width of internal Power-
On reset pulse
no external resistor at pin PORADJ 4 8 12
ms
external resistor bridge at pin PORADJ 8 16 24
I
L
Leakage current on pin
PORADJ
V
PORADJ
< 0.5 V -0.1 4 10
µA
V
PORADJ
> 1.0 V -1 1
P
TOT
Total power dissipation Continuous operation; T
a
= -25 to 85°C 0.56 W