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STM32F412RGY7TR 数据表(PDF) 27 Page - STMicroelectronics |
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STM32F412RGY7TR 数据表(HTML) 27 Page - STMicroelectronics |
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27 / 201 page  DocID028087 Rev 7 27/201 STM32F412xE/G Functional overview 42 A comprehensive set of power-saving mode allows to design low-power applications. When the internal reset is OFF, the following integrated features are no longer supported: • The integrated power-on reset (POR) / power-down reset (PDR) circuitry is disabled. • The brownout reset (BOR) circuitry must be disabled. • The embedded programmable voltage detector (PVD) is disabled. • VBAT functionality is no more available and VBAT pin should be connected to VDD. 3.19 Voltage regulator The regulator has three operating modes: – Main regulator mode (MR) – Low power regulator (LPR) – Power-down 3.19.1 Regulator ON On packages embedding the BYPASS_REG pin, the regulator is enabled by holding BYPASS_REG low. The WLCSP64 is available in two versions, one with the regulator internally enabled and one with the regulator internally disabled. On all other packages, the regulator is always enabled. Figure 7. Power supply supervisor interconnection with internal reset OFF(1) 1. The PRD_ON pin is available only on WLCSP64, UFBGA100, UFBGA144 and LQFP144 packages. |
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