STM32F334X4 Datasheet, PDF (79/115 Pages) STMicroelectronics – ARMCortex-M4 32b MCU+FPU,up to 64KB Flash,16KB SRAM, 2 ADCs,3 DACs,3 comp.,op-amp, 217ps 10-ch (HRTIM1)

STM32F334x4 STM32F334x6 STM32F334x8
Electrical characteristics
Figure 23. Recommended NRST pin protection
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1. The reset network protects the device against parasitic resets.
2.
The user must ensure that the
Table 53. Otherwise the reset
wleilvl ^{enlootnbethteakNeRnSinTtopiancccaonungtobbyetlhoewdtheevicVeIL}. ^(NRST)
max
level
specified
in
3. The external capacitor on NRST must be placed as close as possible to the device.
4. Place the external capacitor 0.1u F on NRST as close as possible to the chip.
High-resolution timer (HRTIM)
The parameters given in Table 54 are derived from tests performed under ambient
temperature and supply voltage conditions summarized in Table 19.
Table 54. HRTIM1 characteristics
Symbol
Parameter
Conditions
Min. Typ. Max. Unit
T_A
f_HRTIM
t_HRTIM
t_RES(HRTIM)
Timer ambient
f_HRTIM=144MHz ⁽¹⁾
temperature range _{fHRTIM=128MHz} ⁽²⁾
HRTIM input clock
for DLL calibration
As per T_A conditions
Timer resolution
time
f_HRTIM=144MHz ⁽¹⁾, TA
from -40 to 105°C
f_HRTIM=128MHz ⁽²⁾,TA
from -10 to 105°C
-40
-
105
-10
-
105
128
-
144
6.9
-
7.8
-
217
-
-
244
-
°C
°C
MHz
ns
ps
ps
Res_HRTIM
t_DTG
Timer resolution
Dead time
generator clock
period
-
-
f_HRTIM=144MHz ⁽¹⁾
-
0.125
0.868
-
16
bit
-
16
t_HRTIM
- 111.10
ns
|t_{DTR| / |}t_DTF| Dead time range
max
(absolute value)
f_CHPFRQ
Chopper stage
clock frequency
t_1STPW
Chopper first
pulse length
-
f_HRTIM=144MHz ⁽¹⁾
-
f_HRTIM=144MHz ⁽¹⁾
-
f_HRTIM=144MHz ⁽¹⁾
-
-
1/256
0.562
16
0.111
-
511
t_DTG
- 56.77
µs
-
1/16
f_HRTIM
-
9
MHz
-
256
t_HRTIM
- 1.77
µs
1. Using HSE with 8MHz XTAL as clock source, configuring PLL to get PLLCLK=144MHz, and selecting
PLLCLKx2 as HRTIM clock source. (Refer to Reset and clock control section in RM0364.)
2. Using HSI (internal 8MHz RC oscillator), configuring PLL to get PLLCLK=128MHz, and selecting
PLLCLKx2 as HRTIM clock source. (Refer to Reset and clock control section in RM0364.
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