Tim Timer Characteristics; Table 46. Timx Characteristics; Figure 19. Recommended Nrst Pin Protection - STMicroelectronics STM32L151RE Manual

STM32L151xE STM32L152xE
1. The reset network protects the device against parasitic resets.
2. The user must ensure that the level on the NRST pin can go below the V
Table 45. Otherwise the reset will not be taken into account by the device.
6.3.15

TIM timer characteristics

The parameters given in the
Refer to
characteristics (output compare, input capture, external clock, PWM output).
Symbol
t
res(TIM)
f
EXT
Res
TIM
t
COUNTER
t
MAX_COUNT
1. TIMx is used as a general term to refer to the TIM2, TIM3 and TIM4 timers.

Figure 19. Recommended NRST pin protection

Table 46
Section 6.3.13: I/O port characteristics
Table 46. TIMx
Parameter
Timer resolution time
Timer external clock
frequency on CH1 to CH4
Timer resolution
16-bit counter clock
period when internal clock
is selected (timer's
prescaler disabled)
Maximum possible count
are guaranteed by design.
for details on the input/output ction
(1)
characteristics
Conditions
-
f = 32 MHz
TIMxCLK
-
f = 32 MHz
TIMxCLK
-
-
f = 32 MHz 0.0312
TIMxCLK
-
f = 32 MHz
TIMxCLK
DocID025433 Rev 8
Electrical characteristics
max level specified in
IL(NRST)
Min Max
1 -
31.25 -
0 f /2
TIMxCLK
0 16
16
1 65536
2048
- 65536 × 65536
- 134.2
Unit
t
TIMxCLK
ns
MHz
MHz
bit
t
TIMxCLK
µs
t
TIMxCLK
s
93/134
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