57.3 Power Supply Specifications

Table 57-5. Power Supply Electrical Specifications
DC CHARACTERISTICSStandard Operating Conditions: VDDIO = VDDIN 2.5V to 3.6V (unless otherwise stated) Operating temperature -40°C ≤ TA ≤ +85°C for Industrial
Param. No.SymbolCharacteristicsMin.Typ.Max.UnitsConditions
REG_1aVDDCORE_CIN(3)VDDCORE Input Bypass parallel Capacitor pair in single supply mode—100—nFCeramic XR7 with ESR <0.5Ω on all pins
REG_1bVDDCORE_CIN(3)VDDCORE Input Bypass parallel Capacitor pair in dual supply mode—4.7—µFBulk Ceramic or solid Tantalum with ESR <0.5Ω. Minimum and maximum represent absolute values including cap tolerances
—100—nFCeramic XR7 with ESR <0.5Ω on all pins
REG_5VDDIO_CIN(3)VDDIO Input Bypass parallel Capacitor pair—4.7—µFBulk Ceramic or solid Tantalum with ESR <0.5Ω
—100—nFCeramic XR7 with ESR <0.5Ω on all VDDIO pins
REG_9VREFP_CIN(3)External VREFP Input Bypass parallel Capacitor pair —1—µFBulk Ceramic or solid Tantalum with ESR <0.5Ω
REG_11VDDPLLUSB_CIN(3)USB PLL Power pin bypass capacitance—4.7—µFBulk Ceramic or solid Tantalum with ESR <0.5Ω
—100—nFCeramic XR7 with ESR <0.5Ω on all VDDIO pins
REG_13VDDUTMII_CINUSB Transceiver Power pin bypass capacitance—100—nFBulk Ceramic or solid Tantalum with ESR <0.5Ω
—100—nFCeramic XR7 with ESR <0.5Ω on all VDDIO pins
REG_15VDDUTMIC_CINUSB Transceiver Core Power pin bypass capacitance—100—nFBulk Ceramic or solid Tantalum with ESR <0.5Ω
—100—nFCeramic XR7 with ESR <0.5Ω on all VDDIO pins
REG_17VDDOUT_COUT(3)VDDOUT Output Bypass parallel Capacitor pair in single supply mode—1—µFBulk Ceramic or solid Tantalum with ESR <0.5Ω
—100—nFCeramic XR7 with ESR <0.5Ω
REG_19VDDPLL_CINVDD PLL Power pin bypass capacitance—100—nFSee Note 6
—100—nFSee Note 6
REG_21VDDIN_CIN(3)VDDIN Input Bypass parallel Capacitor pair—4.7—µFBulk Ceramic or solid Tantalum with ESR <0.5Ω
—100—nFCeramic XR7 with ESR <0.5Ω
REG_23VDDIN_LEXTVDDIN series Ferrite Bead DCR (DC Resistance)——0.15Ω≥600 Ohms @ 100 MHz
Ferrite Bead current Rating500——mA—
REG_27VDDPLLUSB_LEXTVDDIN series Ferrite Bead DCR (DC Resistance)——0.15Ω≥600 Ohms @ 100 MHz
Ferrite Bead current Rating500——mA—
REG_31VDDCOREFerrite Bead current Rating1.081.21.32VMCU Active, cache and prefetch disabled executing "while(1)" from Flash
REG_31AIVDDCORE_MAXVDDCORE max current——150mALDO mode
REG_33VDDIO (2)VDDIO Input Voltage Range2.53.33.6V—
REG_34VDDIN(2)VDDIN Input Voltage Range2.53.33.6V—
REG_35VDDOUTVDDOUT Output Voltage Range1.21.231.26VNormal mode, ILOAD = 100 mA
REG_35bIDDOUTMax VDDOUT Output Current——150mA—
REG_36VDDOUTON_TIMEVDDOUT Turn-on Time—12.5msCDOUT = 1 μF, VDDOUT reaches DC output voltage
REG_37VDDPLL Main Oscillator SupplyVDDCORE—VDDCOREV—
REG_38VDDUTMICDC Supply UDPHS and UHPHS UTMI+ Core1.081.21.32V—
REG_39VDDUTMIIDC Supply UDPHS and UHPHS UTMI+ Interface33.33.6V—
REG_40VDDPLLUSBUTMI PLL Supply33.33.6V—
REG_41SVDDCORE_RVDDCORE Rise Ramp Rate1.2—30V/msFailure to meet this specification may lead to start-up or unexpected behaviors
REG_43SVDDIO_RVDDIO Rise Ramp Rate to Ensure Internal Power-on Reset Signal1.9—30V/msFailure to meet this specification may lead to start-up or unexpected behaviors
REG_44SVDDIO_FVDDIO Falling Ramp Rate to Ensure Internal Power-on Reset Signal1.9—30V/µsFailure to meet this specification may cause the device to not detect reset
REG_45aVPORVDDIO Power-on Reset 1.37—1.61VVDDIO Power up/Power down (See Param REG43, VDDIO Ramp Rate)
REG_45bVPOR_COREVDDCORE Power-on Reset 0.66—1.07V—
REG_53TRSTExternal RESET valid active pulse width94 (3*SLCK cycles)——µsMinimum reset active time to guarantee MCU reset
REG_55VPOR_HYSVDDIO POR Hysteresis Voltage4080130mV—
REG_59VPOR_HYS_COREVDDCORE POR Hysteresis Voltage1060115mV—
REG_63VBOD_THRCore Supply Brownout Falling Threshold0.9711.04V—
REG_65VBOD_HYSHysteresis Voltage—2550mV—
REG_69VMON_THRVDDIO Supply Monitor Threshold—2.56—VDigital Code 1000
—2.68—VDigital Code 1001
—2.8—VDigital Code 1010
—2.92—VDigital Code 1011
—3.04—VDigital Code 1100
—3.16—VDigital Code 1101
—3.28—VDigital Code 1110
—3.4—VDigital Code 1111
REG_71VMON_ACCSupply Monitor Threshold Accuracy-4—4%—
REG_73VMON_HYSSupply Monitor Hysteresis Voltage—3845mV—
REG_74R-VBGExternal Pull-Down Resistor recommended on VBG pin—5620—ΩResistor value tolerance: +/-1%
REG_75C-VBGExternal Decoupling Capacitor recommended on VBG pin—10—pF—
Note:
  1. Ferrite Bead ISAT(min) ≥ (IDDANA(max) * 1.15).
  2. VDDIO and VDDIN must be at the same voltage level.
  3. All bypass caps must be located immediately adjacent to pins and on the same side of the PCB as the MCU.