STM32N657: absolute maximum ratings for VDDSMPS and VDDA18PMU (not in DS14791 Table 22) Hello,We are designing a PCB around the STM32N657B0 (VFBGA198) using the internal SMPS. VDDSMPS and VDDA18PMU are fed from a dedicated 1.8 V buck, with VDDA18PMU filtered from the same rail, as per Figure 2 in DS14791.For our derating and fault analysis we need the absolute maximum ratings of these two pins, and we cannot find them in any current ST document:DS14791 Rev 11 (Sep 2026), Table 22 “Voltage characteristics”: no VDDSMPS or VDDA18PMU row. The “VDDA18 – VSS, 1.98 V” row lists only VDDA18PLL, VDDA18CSI, VDDA18USB and VDDA18ADC. DS14791 Rev 11, Table 25 “General operating conditions”: VDDSMPS and VDDA18PMU are 1.62 / 1.8 / 1.89 V. DS14791 Rev 11, Table 29 “Characteristics of SMPS step-down”: the input is called “VDDA18”, 1.62 to 1.89 V. AN5967 Rev 6, AN6000 Rev 1 and RM0486 Rev 4: no absolute maximum for either pin.QuestionsWhat are the absolute maximum ratings (min and max) for VDDSMPS and VDDA18PMU? Does the “VDDA18 – VSS, 1.98 V” row in Table 22 also cover VDDSMPS and VDDA18P
