Datasheet

Product overview
STM8S105xx
4.11 TIM4 - 8-bit basic timer
• 8-bit autoreload, adjustable prescaler ratio to any power of 2 from 1 to 128
• Clock source: CPU clock
• Interrupt source: 1 x overflow/update
Table 4: TIM timer features
Timer Counter
size
(bits)
Prescaler Counting
mode
CAPCOM
channels
Complem.
outputs
Ext.
trigger
Timer
synchronization/
chaining
TIM1 16 Any
integer
from 1 to
65536
Up/Down 4 3 Yes No
TIM2 16 Any
power of 2
from 1 to
32768
Up 3 0 No
TIM3 16 Any
power of 2
from 1 to
32768
Up 2 0 No
TIM4 8 Any
power of 2
from 1 to
128
Up 0 0 No
4.12 Analog-to-digital converter (ADC1)
The STM8S105xx products contain a 10-bit successive approximation A/D converter
(ADC1) with up to 10 multiplexed input channels and the following main features:
• Input voltage range: 0 to V
DD
• Input voltage range: 0 to V
DDA
• Conversion time: 14 clock cycles
• Single and continuous and buffered continuous conversion modes
• Buffer size (n x 10 bits) where n = number of input channels
• Scan mode for single and continuous conversion of a sequence of channels
• Analog watchdog capability with programmable upper and lower thresholds
• Analog watchdog interrupt
• External trigger input
• Trigger from TIM1 TRGO
• End of conversion (EOC) interrupt
Additional AIN12 analog input is not selectable in ADC scan mode or with analog
watchdog. Values converted from AIN12 are stored only into the
ADC_DRH/ADC_DRL registers.
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