STM32F101X8_09 Datasheet, PDF (56/81 Pages) STMicroelectronics – Medium-density access line, ARM-based 32-bit MCU with 64 or 128 KB Flash, 6 timers, ADC and 7 communication interfaces

Electrical characteristics
STM32F101x8, STM32F101xB
5.3.14
5.3.15
TIM timer 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⁽¹⁾ characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
t_res(TIM) Timer resolution time
f_TIMxCLK = 36 MHz
1
27.8
f_EXT
Timer external clock
frequency on CH1 to CH4 _{fTIMxCLK = 36 MHz}
0
0
Res_TIM Timer resolution
16-bit counter clock period
t_COUNTER when internal clock is
selected
1
f_TIMxCLK = 36 MHz 0.0278
f_TIMxCLK/2
18
16
65536
1820
t_{MAX_COUNT} Maximum possible count
f_TIMxCLK = 36 MHz
65536 × 65536
119.2
1. TIMx is used as a general term to refer to the TIM1, TIM2, TIM3 and TIM4 timers.
t_TIMxCLK
ns
MHz
MHz
bit
t_TIMxCLK
µs
t_TIMxCLK
s
Communications interfaces
I²C interface characteristics
Unless otherwise specified, the parameters given in Table 38 are derived from tests
performed under the ambient temperature, f_PCLK1 frequency and V_DD supply voltage
conditions summarized in Table 8.
The STM32F101xx medium-density access line I²C interface meets the requirements of the
standard I²C communication protocol with the following restrictions: the 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_DD is disabled, but is still present.
The I²C characteristics are described in Table 38. Refer also to Section 5.3.12: I/O port
characteristics for more details on the input/output alternate function characteristics (SDA
and SCL).
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