Electrical characteristics
STM32F100x4, STM32F100x6, STM32F100x8, STM32F100xB
5.3.14
TIMx characteristics
The parameters given in Table 37 are guaranteed by design.
Refer to Section 5.3.12: I/O port characteristics for details on the input/output alternate
function characteristics (output compare, input capture, external clock, PWM output).
Table 37. TIMx characteristics
Conditions(1)
fTIMxCLK = 24 MHz
fTIMxCLK = 24 MHz
Symbol
Parameter
Min
Max
Unit
1
41.7
0
tTIMxCLK
ns
tres(TIM)
Timer resolution time
fTIMxCLK/2
12
MHz
MHz
bit
Timer external clock
frequency on CHx(2)
fEXT
0
ResTIM
Timer resolution
16
16-bit counter clock period
when the internal clock is
selected
1
65536
tTIMxCLK
tCOUNTER
fTIMxCLK = 24 MHz
fTIMxCLK = 24 MHz
2730
µs
65536 × 65536 tTIMxCLK
178
tMAX_COUNT
Maximum possible count
s
1. TIMx is used as a general term to refer to the TIM1, TIM2, TIM3, TIM4, TIM15, TIM16 and TIM17 timers.
2. CHx is used as a general term to refer to CH1 to CH4 for TIM1, TIM2, TIM3 and TIM4, to the CH1 to CH2
for TIM15, and to CH1 for TIM16 and TIM17.
5.3.15
Communications interfaces
I2C interface characteristics
Unless otherwise specified, the parameters given in Table 38 are derived from tests
performed under the ambient temperature, f
frequency and V supply voltage
PCLK1
DD
conditions summarized in Table 8.
2
2
The STM32F100xx value line I C interface meets the requirements of the standard I C
communication protocol with the following restrictions: t
he I/O pins SDA and SCL are
mapped to are not “true” open-drain. When configured as open-drain, the PMOS connected
between the I/O pin and V is disabled, but is still present.
DD
2
The I C characteristics are described in Table 38. Refer also to
Section 5.3.12: I/O port
for more details on the input/output alternate function characteristics (SDA
characteristics
and SCL)
.
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