Datasheet

Electrical characteristics STM8S105x4/6
62/121 DocID14771 Rev 15
HSI internal RC/f
CPU
= f
MASTER
= 16 MHz, V
DD
= 5 V
Current consumption curves
The following figures show typical current consumption measured with code executing in
RAM.
Figure 13. Typ I
DD(RUN)
vs. V
DD
HSE user external clock, f
CPU
= 16 MHz
Table 30. Peripheral current consumption
Symbol Parameter Typ Unit
I
DD(TIM1)
TIM1 supply current
(1)
1. Data based on a differential I
DD
measurement between reset configuration and timer counter running at
16 MHz. No IC/OC programmed (no I/O pads toggling). Not tested in production.
230
µA
I
DD(TIM2)
TIM2 supply current
(1)
115
I
DD(TIM3)
TIM3 supply current
(1)
90
I
DD(TIM4)
TIM4 supply current
(1)
30
I
DD(UART2)
UART2 supply current
(2)
2. Data based on a differential IDD measurement between the on-chip peripheral when kept under reset and
not clocked and the on-chip peripheral when clocked and not kept under reset. No I/O pads toggling. Not
tested in production.
110
I
DD(SPI)
SPI supply current
(2)
45
I
DD(I2C)
I2C supply current
(2)
65
I
DD(ADC1)
ADC1 supply current when converting
(3)
3. Data based on a differential IDD measurement between reset configuration and continuous A/D
conversions. Not tested in production.
955
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