Datasheet

DocID15962 Rev 13 105/131
STM8L151xx, STM8L152xx Electrical parameters
112
t
S
Sampling time
V
AIN
on PF0 fast
channel
V
DDA
< 2.4 V
0.43
(4)(5)
µs
V
AIN
on PF0 fast
channel
2.4 V V
DDA
 3.6 V
0.22
(4)(5)
µs
V
AIN
on slow channels
V
DDA
< 2.4 V
0.86
(4)(5)
µs
V
AIN
on slow channels
2.4 V V
DDA
 3.6 V
0.41
(4)(5)
µs
t
conv
12-bit conversion time
12 + t
S
1/f
ADC
16 MHz 1
(4)
µs
t
WKUP
Wakeup time from OFF
state
3µs
t
IDLE
(6)
Time before a new
conversion
T
A
+25 °C 1
(7)
s
T
A
+70 °C 20
(7)
ms
T
A
+125 °C 2
(7)
ms
t
VREFINT
Internal reference
voltage startup time
refer to
Table 46
ms
1. The current consumption through V
REF
is composed of two parameters:
- one constant (max 300 µA)
- one variable (max 400 µA), only during sampling time + 2 first conversion pulses.
So, peak consumption is 300+400 = 700 µA and average consumption is 300 + [(4 sampling + 2) /16] x 400 = 450 µA at
1Msps
2. V
REF-
or V
DDA
must be tied to ground.
3. Guaranteed by design, not tested in production.
4. Minimum sampling and conversion time is reached for maximum Rext = 0.5 k.
5. Value obtained for continuous conversion on fast channel.
6. The time between 2 conversions, or between ADC ON and the first conversion must be lower than t
IDLE.
7. The t
IDLE
maximum value is  on the “Z” revision code of the device.
Table 53. ADC1 characteristics (continued)
Symbol Parameter Conditions Min Typ Max Unit