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ST7LITEUS2, ST7LITEUS5
Electrical characteristics
103/136
12.4.3 On-chip
peripherals
12.5
Clock and timing characteristics
Subject to general operating conditions for V
DD
, f
OSC
, and T
A
.
Table 54.
On-chip peripheral characteristics
Symbol
Parameter
Conditions
Typ
(1)
Unit
I
DD(AT)
12-bit auto-reload timer supply current
(2)
f
CPU
= 4 MHz V
DD
=
3.0 V
15
μ
A
f
CPU
= 8 MHz V
DD
=
5.0 V
30
I
DD(ADC)
ADC supply current when converting
(3)
f
ADC
= 2 MHz V
DD
=
3.0 V
450
f
ADC
= 4 MHz V
DD
=
5.0 V
750
1.
Not tested in production, guaranteed by characterization.
2.
Data based on a differential I
DD
measurement between reset configuration (timer stopped) and the timer running in PWM
mode at f
cpu
= 8 MHz.
3.
Data based on a differential I
DD
measurement between reset configuration and continuous A/D conversions with amplifier
off.
Table 55.
General timings
Symbol
Parameter
(1)
1.
Data based on characterization. Not tested in production.
Conditions
Min
Typ
(2)
2.
Data based on typical application software.
Max
Unit
t
c(INST)
Instruction cycle time
f
CPU
=8 MHz
2
3
12
t
CPU
250
375
1500
ns
t
v(IT)
Interrupt reaction time
(3)
t
v(IT)
=
Δ
t
c(INST)
+ 10
3.
Time measured between interrupt event and interrupt vector fetch.
Δ
t
c(INST)
is the number of t
CPU
cycles
needed to finish the current instruction execution.
f
CPU
=8 MHz
10
22
t
CPU
1.25
2.75
μ
s
Table 56.
Auto-wakeup RC oscillator
Parameter
Conditions
Min
Typ
Max
Unit
Supply Voltage Range
2.4
5.0
5.5
V
Operating Temperature Range
-40
25
125
°C
Current Consumption
(1)
1.
Data guaranteed by design.
Without prescaler
2.0
8.0
14.0
µA
Consumption
AWU RC switched off
0
µA
Output Frequency
20
33
60
kHz
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