Datasheet

Electrical parameters STM8L15xx8, STM8L15xR6
114/134 DocID17943 Rev 6
t
S
Sampling time
V
AIN
PF0/1/2/3 fast
channels
V
DDA
< 2.4 V
0.43
(3)(4)
µs
V
AIN
PF0/1/2/3 fast
channels
2.4 V ≤ V
DDA
≤ 3.6 V
0.22
(3)(4)
V
AIN
on slow channels
V
DDA
< 2.4 V
0.86
(3)(4)
V
AIN
on slow channels
2.4 V ≤ V
DDA
≤ 3.6 V
0.41
(3)(4)
t
conv
12-bit conversion time
12 + t
S
1/f
ADC
16 MHz 1
(3)
µs
t
WKUP
Wakeup time from OFF
state
3µs
t
IDLE
(5)
Time before a new
conversion
∞ s
t
VREFINT
Internal reference
voltage startup time
refer to
Tabl e 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-
must be tied to ground.
3. Minimum sampling and conversion time is reached for maximum R
AIN
= 0.5 kΩ. .
4. Value obtained for continuous conversion on fast channel.
5. The time between 2 conversions, or between ADC ON and the first conversion must be lower than t
IDLE.
Table 53. ADC1 characteristics (continued)
Symbol Parameter Conditions Min. Typ. Max. Unit