STM32L151C8T6 Datasheet, PDF (83/121 Pages) STMicroelectronics – Ultra-low-power 32-bit MCU ARM-based Cortex-M3, 128KB Flash, 16KB SRAM, 4KB EEPROM, LCD, USB, ADC, DAC

STM32L151x6/8/B, STM32L152x6/8/B
Electrical characteristics
6.3.14
Figure 19. Recommended NRST pin protection
External
reset circuit⁽¹⁾
VDD
NRST⁽²⁾
RPU
0.1 μF
Internal reset
Filter
STM32L15xxx
ai17854
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_IL(NRST) max level specified in
Table 45. Otherwise the reset will not be taken into account by the device.
TIM timer characteristics
The parameters given in the following table are guaranteed by design.
Refer to Section 6.3.11: I/O current injection characteristics for details on the input/output
alternate function characteristics (output compare, input capture, external clock, PWM
output).
Table 46. TIMx⁽¹⁾ characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
t_res(TIM)
f_EXT
Res_TIM
Timer resolution time
f_TIMxCLK = 32 MHz
Timer external clock
frequency on CH1 to CH4 _{fTIMxCLK = 32 MHz}
Timer resolution
1
31.25
0
0
f_TIMxCLK/2
16
16
t_COUNTER
16-bit counter clock period
when internal clock is
selected (timer’s prescaler
disabled)
f_TIMxCLK = 32 MHz
1
0.0312
65536
2048
t_{MAX_COUNT} Maximum possible count
f_TIMxCLK = 32 MHz
1. TIMx is used as a general term to refer to the TIM2, TIM3 and TIM4 timers.
65536 × 65536
134.2
t_TIMxCLK
ns
MHz
MHz
bit
t_TIMxCLK
µs
t_TIMxCLK
s
Doc ID 17659 Rev 8
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