CD00237391 Datasheet, PDF (102/177 Pages) STMicroelectronics – ARM-based 32-bit MCU, 150DMIPs, up to 1 MB Flash/128+4KB RAM

Electrical characteristics
STM32F20xxx
Table 49. Characteristics of TIMx connected to the APB2 domain⁽¹⁾
Symbol
Parameter
Conditions
Min
Max
Unit
t_res(TIM) Timer resolution time
AHB/APB2
prescaler distinct
from 1, f_TIMxCLK =
120 MHz
AHB/APB2
prescaler = 1,
f_TIMxCLK = 60 MHz
1
8.3
1
16.7
-
t_TIMxCLK
-
ns
-
t_TIMxCLK
-
ns
f_EXT
Timer external clock
frequency on CH1 to CH4
0
f_TIMxCLK/2
MHz
0
60
MHz
Res_TIM
t_COUNTER
Timer resolution
-
16-bit counter clock period ^{fTIMxCLK = 120 MHz} 1
when internal clock is
APB2 = 60 MHz
selected
0.0083
16
65536
546
bit
t_TIMxCLK
µs
t_{MAX_COUNT} Maximum possible count
-
65536 × 65536 t_TIMxCLK
-
35.79
s
1. TIMx is used as a general term to refer to the TIM1, TIM8, TIM9, TIM10, and TIM11 timers.
5.3.19
Communications interfaces
I²C interface characteristics
Unless otherwise specified, the parameters given in Table 50 are derived from tests
performed under the ambient temperature, f_PCLK1 frequency and V_DD supply voltage
conditions summarized in Table 12.
STM32F205xx and STM32F207xx 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 50. Refer also to Section 5.3.16: I/O port
characteristics for more details on the input/output alternate function characteristics (SDA
and SCL).
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