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ST7LITEUS2, ST7LITEUS5
Electrical characteristics
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12.4
Supply current characteristics
The following current consumption specified for the ST7 functional operating modes over
temperature range does not take into account the clock source current consumption. To get
the total device consumption, the two current values must be added (except for Halt mode
for which the clock is stopped). Refer to
Section 12.4.2: Internal RC oscillator supply current
T
A
= -40 to +125 °C unless otherwise specified.
12.4.1 Supply
current
Table 52.
Supply current characteristics
Symbol
Parameter
Conditions
Typ
Max Unit
I
DD
Supply current in Run mode
(1)
V
DD
=5
V
f
CPU
= 4 MHz
2.5
4.5
(2)
mA
f
CPU
= 8 MHz
5.0
7.5
Supply current in Wait mode
(3)
f
CPU
= 4 MHz
0.85
2.0
f
CPU
= 8 MHz
1.2
3.5
Supply current in Wait mode
(4)
f
CPU
/32 = 250 kHz
600
950
μ
A
Supply current in Slow-Wait mode
(5)
f
CPU
/32 = 250 kHz
450
750
Supply current in AWUFH mode
(6)(7)
45
100
Supply current in Active-halt mode
100
250
Supply current in Halt mode
(8)
T
A
= 85
°C
0.5
3.0
T
A
= 125
°C
0.5
5.0
Supply current in Run mode
V
DD
=3
V
f
CPU
= 4 MHz
1.30
2.0
mA
Supply current in Wait mode
f
CPU
= 4 MHz
0.36
0.5
Supply current in Slow mode
f
CPU
/32 = 250 kHz
300
400
μ
A
Supply current in Slow-wait mode
f
CPU
/32 = 250 kHz
250
350
Supply current in AWUFH mode
20
50
Supply current in Active-halt mode
90
150
Supply current in Halt mode
T
A
= 85
°C
0.25
2.5
T
A
= 125
°C
0.25
4.5
1.
CPU running with memory access, all I/O pins in input mode with a static value at V
DD
or V
SS
(no load), all peripherals in
reset state; clock input (CLKIN) driven by external square wave, LVD disabled.
2.
Data based on characterization, not tested in production.
3.
All I/O pins in input mode with a static value at VDD or VSS (no load), all peripherals in reset state; clock input (CLKIN)
driven by external square wave, LVD disabled.
4.
All I/O pins in input mode with a static value at VDD or VSS (no load), all peripherals in reset state; clock input (CLKIN)
driven by external square wave, LVD disabled.
5.
Slow-Wait mode selected with fCPU based on f
OSC
divided by 32. All I/O pins in input mode with a static value at V
DD
or
V
SS
(no load), all peripherals in reset state; clock input (CLKIN) driven by external square wave, LVD disabled.
6.
All I/O pins in input mode with a static value at V
DD
or V
SS
(no load). Data tested in production at V
DD
max. and f
CPU
max.
7.
This consumption refers to the Halt period only and not the associated run period which is software dependent.
8.
All I/O pins in output mode with a static value at VSS (no load), LVD disabled. Data based on characterization results,
tested in production at V
DD
max and f
CPU
max.
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