STMicroelectronics Discovery kit for STM32L151/152 line - with STM32L152RC MCU STM32L152C-DISCO STM32L152C-DISCO Hoja De Datos
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STM32L152C-DISCO
DocID022799 Rev 6
STM32L15xCC STM32L15xRC STM32L15xUC STM32L15xVC
Electrical characteristics
111
Figure 20. Recommended NRST pin protection
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
2. The user must ensure that the level on the NRST pin can go below the V
IL(NRST)
max level specified in
. Otherwise the reset will not be taken into account by the device.
6.3.15 TIM
timer characteristics
are guaranteed by design.
Refer to
for details on the input/output alternate
function characteristics (output compare, input capture, external clock, PWM output).
ai17854b
STM32L1xx
RPU
NRST
(2)
V
DD
Filter
Internal reset
0.1 μF
External reset circuit(1)
Table 47. TIMx
(1)
characteristics
1. TIMx is used as a general term to refer to the TIM2, TIM3 and TIM4 timers.
Symbol
Parameter
Conditions
Min
Max
Unit
t
res(TIM)
Timer resolution time
1
-
t
TIMxCLK
f
TIMxCLK
= 32 MHz 31.25
-
ns
f
EXT
Timer external clock
frequency on CH1 to CH4
frequency on CH1 to CH4
0
f
TIMxCLK
/2
MHz
f
TIMxCLK
= 32 MHz
0
16
MHz
Res
TIM
Timer resolution
-
16
bit
t
COUNTER
16-bit counter clock
period when internal clock
is selected (timer’s
prescaler disabled)
period when internal clock
is selected (timer’s
prescaler disabled)
-
1
65536
t
TIMxCLK
f
TIMxCLK
= 32 MHz 0.0312
2048
µs
t
MAX_COUNT
Maximum possible count
-
-
65536 × 65536
t
TIMxCLK
f
TIMxCLK
= 32 MHz
-
134.2
s