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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LQFP176 датащи(PDF) 26 Page - STMicroelectronics |
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LQFP176 датащи(HTML) 26 Page - STMicroelectronics |
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26 / 204 page  Description STM32F405xx, STM32F407xx 26/203 DS8626 Rev 9 Figure 8. PDR_ON and NRST control with internal reset OFF 1. PDR = 1.7 V for reduce temperature range; PDR = 1.8 V for all temperature range. 2.2.16 Voltage regulator The regulator has four operating modes: • Regulator ON – Main regulator mode (MR) – Low-power regulator (LPR) – Power-down • Regulator OFF Regulator ON On packages embedding the BYPASS_REG pin, the regulator is enabled by holding BYPASS_REG low. On all other packages, the regulator is always enabled. There are three power modes configured by software when regulator is ON: • MR is used in the nominal regulation mode (With different voltage scaling in Run) In Main regulator mode (MR mode), different voltage scaling are provided to reach the best compromise between maximum frequency and dynamic power consumption. Refer to Table 14: General operating conditions. • LPR is used in the Stop modes The LP regulator mode is configured by software when entering Stop mode. • Power-down is used in Standby mode. The Power-down mode is activated only when entering in Standby mode. The regulator output is in high impedance and the kernel circuitry is powered down, inducing zero consumption. The contents of the registers and SRAM are lost) MS19009V6 V DD time PDR = 1.7 V time NRST PDR_ON PDR_ON Reset by other source than power supply supervisor |
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