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M451RG6AE

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Nuvoton Tech Microcontroller Units (MCUs/MPUs/SOCs), LQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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M451RG6AE

Nuvoton Tech · Microcontroller Units (MCUs/MPUs/SOCs) · LQFP-64(10x10)

M451RG6AE from Nuvoton Tech, in a LQFP-64(10x10). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 PB.15 bidirectional General purpose digital I/O pin, also EADC_CH12 analog input, ACMP0_P3 comparator positive input and EBI_nCS1 chip select 1.
2 PB.5 bidirectional General purpose digital I/O pin, also EADC_CH13, SPI0_MOSI0, SPI1_MOSI, ACMP0_P2 and EBI_AD6.
3 PB.6 bidirectional General purpose digital I/O pin, also EADC_CH14, SPI0_MISO0, SPI1_MISO, ACMP0_P1 and EBI_AD5.
4 PB.7 bidirectional General purpose digital I/O pin, also EADC_CH15, SPI0_CLK, SPI1_CLK, ACMP0_P0 and EBI_AD4.
5 nRESET input External reset input, active LOW, with an internal pull-up; setting this pin low resets the chip to initial state.
6 PD.0 bidirectional General purpose digital I/O pin, also SPI1_I2SMCLK, UART0_RXD, ACMP1_N and INT3.
7 AVSS power_in Ground pin for analog circuit.
8 PD.8 bidirectional General purpose digital I/O pin, also EBI_nCS0 chip select 0.
9 PD.9 bidirectional General purpose digital I/O pin, also ACMP1_P3 and EBI_ALE address latch enable.
10 PD.1 bidirectional General purpose digital I/O pin, also PWM0_SYNC_IN, UART0_TXD, ACMP1_P2, T0 and EBI_nRD.
11 PD.2 bidirectional General purpose digital I/O pin, also STADC, T0_EXT, ACMP1_P1, PWM0_BRAKE0, EBI_nWR and INT0.
12 PD.3 bidirectional General purpose digital I/O pin, also T2, T1_EXT, ACMP1_P0, PWM0_BRAKE1, EBI_MCLK and INT1.
13 VBAT power_in Power supply by batteries for RTC and PF.0~PF.2.
14 PF.0 bidirectional General purpose digital I/O pin, also X32_OUT 32.768 kHz crystal output and INT5.
15 PF.1 bidirectional General purpose digital I/O pin, also X32_IN 32.768 kHz crystal input.
16 PF.2 bidirectional General purpose digital I/O pin, also TAMPER detector loop pin.
17 PD.12 bidirectional General purpose digital I/O pin, also SPI2_SS, UART3_TXD, PWM1_CH0 and EBI_ADR16.
18 PD.13 bidirectional General purpose digital I/O pin, also SPI2_MOSI, UART3_RXD, PWM1_CH1 and EBI_ADR17.
19 PD.14 bidirectional General purpose digital I/O pin, also SPI2_MISO, UART3_nCTS, PWM1_CH2 and EBI_ADR18.
20 PD.15 bidirectional General purpose digital I/O pin, also SPI2_CLK, UART3_nRTS, PWM1_CH3 and EBI_ADR19.
21 PD.7 bidirectional General purpose digital I/O pin, also PWM0_SYNC_IN, T1, ACMP0_O, PWM0_CH5 and EBI_nRD.
22 PF.3 bidirectional General purpose digital I/O pin, also XT1_OUT 4~20 MHz crystal output and I2C1_SCL.
23 PF.4 bidirectional General purpose digital I/O pin, also XT1_IN 4~20 MHz crystal input and I2C1_SDA.
24 VSS power_in Ground pin for digital circuit.
25 VDD power_in Power supply for I/O ports and LDO source for internal PLL and digital function.
26 LDO_CAP power_out LDO output pin; must be connected with a 1uF capacitor.
27 PC.0 bidirectional General purpose digital I/O pin, also SPI2_CLK, UART2_nCTS, PWM0_CH0, EBI_AD8 and INT2.
28 PC.1 bidirectional General purpose digital I/O pin, also CLKO, STDAC, UART2_nRTS, PWM0_CH1 and EBI_AD9.
29 PC.2 bidirectional General purpose digital I/O pin, also SPI2_SS, UART2_TXD, ACMP1_O, PWM0_CH2 and EBI_AD10.
30 PC.3 bidirectional General purpose digital I/O pin, also SPI2_MOSI, UART2_RXD, PWM0_CH3 and EBI_AD11.
31 PC.4 bidirectional General purpose digital I/O pin, also SPI2_MISO, I2C1_SCL, PWM0_CH4 and EBI_AD12.
32 PE.0 bidirectional General purpose digital I/O pin, also SPI2_CLK, I2C1_SDA, T2_EXT, SC0_CD, PWM0_CH0, EBI_nCS1 and INT4.
33 PC.5 bidirectional General purpose digital I/O pin, also SPI2_I2SMCLK, PWM0_CH5 and EBI_AD13.
34 PC.6 bidirectional General purpose digital I/O pin, also I2C1_SMBAL, ACMP1_O, PWM1_CH0 and EBI_AD14.
35 PC.7 bidirectional General purpose digital I/O pin, also I2C1_SMBSUS, PWM1_CH1 and EBI_AD15.
36 PF.5 bidirectional General purpose digital I/O pin, also ICE_CLK serial wired debugger clock.
37 PF.6 bidirectional General purpose digital I/O pin, also ICE_DAT serial wired debugger data.
38 PA.7 bidirectional General purpose digital I/O pin, also SPI1_CLK, T0_EXT and EBI_AD7.
39 PA.6 bidirectional General purpose digital I/O pin, also SPI1_MISO, T1_EXT and EBI_AD6.
40 PA.5 bidirectional General purpose digital I/O pin, also SPI1_MOSI, T2_EXT and EBI_AD5.
41 PA.4 bidirectional General purpose digital I/O pin, also SPI1_SS and EBI_AD4.
42 PE.8 bidirectional General purpose digital I/O pin (VDDIO domain), also UART1_TXD, SPI0_MISO1, I2C1_SCL and SC0_PWR.
43 PE.9 bidirectional General purpose digital I/O pin (VDDIO domain), also UART1_RXD, SPI0_MOSI1, I2C1_SDA and SC0_RST.
44 PE.10 bidirectional General purpose digital I/O pin (VDDIO domain), also SPI1_MISO, SPI0_MISO0, UART1_nCTS, I2C0_SMBAL and SC0_DAT.
45 PE.11 bidirectional General purpose digital I/O pin (VDDIO domain), also SPI1_MOSI, SPI0_MOSI0, UART1_nRTS, I2C0_SMBSUS and SC0_CLK.
46 PE.12 bidirectional General purpose digital I/O pin (VDDIO domain), also SPI1_SS, SPI0_SS, UART1_TXD and I2C0_SCL.
47 PE.13 bidirectional General purpose digital I/O pin (VDDIO domain), also SPI1_CLK, SPI0_CLK, UART1_RXD and I2C0_SDA.
48 VDDIO power_in Power supply for PE.8~PE.13.
49 PA.3 bidirectional General purpose digital I/O pin, also UART0_RXD, UART0_nRTS, I2C0_SCL, SC0_PWR, PWM1_CH2 and EBI_AD3.
50 PA.2 bidirectional General purpose digital I/O pin, also UART0_TXD, UART0_nCTS, I2C0_SDA, SC0_RST, PWM1_CH3 and EBI_AD2.
51 PA.1 bidirectional General purpose digital I/O pin, also UART1_nRTS, UART1_RXD, SC0_DAT, PWM1_CH4 and EBI_AD1.
52 PA.0 bidirectional General purpose digital I/O pin, also UART1_nCTS, UART1_TXD, SC0_CLK, PWM1_CH5, EBI_AD0 and INT0.
53 VSS power_in Ground pin for digital circuit.
54 VDD power_in Power supply for I/O ports and LDO source for internal PLL and digital function.
55 AVDD power_in Power supply for internal analog circuit.
56 VREF power_in Voltage reference input for ADC; must be connected with a 1uF capacitor.
57 PB.0 bidirectional General purpose digital I/O pin, also EADC_CH0, SPI0_MOSI1, UART2_RXD, T2, DAC analog output, EBI_nWRL and INT1.
58 PB.1 bidirectional General purpose digital I/O pin, also EADC_CH1, SPI0_MISO1, UART2_TXD, T3, SC0_RST, PWM0_SYNC_OUT and EBI_nWRH.
59 PB.2 bidirectional General purpose digital I/O pin, also EADC_CH2, SPI0_CLK, SPI1_CLK, UART1_RXD and SC0_CD.
60 PB.3 bidirectional General purpose digital I/O pin, also EADC_CH3, SPI0_MISO0, SPI1_MISO and UART1_TXD.
61 PB.4 bidirectional General purpose digital I/O pin, also EADC_CH4, SPI0_SS, SPI1_SS, UART1_nCTS, ACMP0_N and EBI_AD7.
62 PB.8 bidirectional General purpose digital I/O pin, also EADC_CH5, UART1_nRTS and PWM0_CH2.
63 PB.11 bidirectional General purpose digital I/O pin, also EADC_CH8 analog input.
64 PB.12 bidirectional General purpose digital I/O pin, also EADC_CH9 analog input.

Key specifications

Parameter Value
Manufacturer Nuvoton Tech
Package LQFP-64(10x10)
Category Embedded Processors & Controllers
Pins 64

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
DC Power Supply VDD - VSS -0.3 7 V 212
Oscillator Frequency 1/tCLCL 4 20 MHz 212
Operating Temperature TA -40 105 °C 212
Storage Temperature TST -55 150 °C 212
Maximum Current into VDD IDD 120 mA 212
Maximum Current out of VSS ISS 120 mA 212
Maximum Current sunk by a I/O pin IIO 35 mA 212
Maximum Current sourced by a I/O pin IIO 35 mA 212
Maximum Current sunk by total I/O pins IIO 100 mA 212
Maximum Current sourced by total I/O pins IIO 100 mA 212
Operation voltage VDD 2.5 5.5 V VDD = 2.5 V ~ 5.5 V up to 72 MHz 213
Power supply for PE.8~PE.13 VDDIO 1.8 5.5 V 213
RTC Operation voltage for PF.0~PF.2 VBAT 2.5 5.5 V 213
Power Ground VSS / AVSS -0.3 0 0.3 V 213
LDO Output Voltage VLDO 1.8 V VDD ≥ 2.5 V 213
Band-gap Voltage VBG 1.175 1.21 1.225 V VDD = 2.5 V ~ 5.5 V, TA = 25C 213
Allowed voltage difference for VDD and AVDD VDD-AVDD -0.3 0 0.3 V 213
Operating Current Normal Run, HCLK = 72 MHz, all digital modules on IDD1 64 mA 5.5V, HXT 12 MHz, HIRC X, PLL V, digital modules V 213
Operating Current Normal Run, HCLK = 72 MHz IDD3 63 mA 3.3V, HXT 12 MHz, PLL V, digital modules V 213
Operating Current Idle Mode, HCLK = 72 MHz IIDLE1 42 mA 5.5V, HXT 12 MHz, PLL V, digital modules V 214
Operating Current HCLK = 32.768 kHz IDD21 153 uA 5.5V, LXT 32.768 kHz, digital modules V 214
Operating Current Idle Mode, HCLK = 12 MHz IIDLE14 2 mA 5.5V, HXT 12 MHz, digital modules X 214
Sink current ISK24 5.4 9 mA VDD = VBAT = 2.5 ~ 5.5 V, VDDIO = 1.8 V, VS = 0.45 V 218
HXT Operation Voltage VHXT 2.5 5.5 V 219
HXT Temperature TA -40 105 ℃ 219
HXT Operating Current IHXT 2 mA 12 MHz, VDD = 5.5V 219
HXT Clock Frequency fHXT 4 20 MHz 219
HXT input clock high time tCHCX 10 ns 219
HXT input clock low time tCLCX 10 ns 219
HXT input clock rise time tCLCH 2 15 ns 219
HXT input clock fall time tCHCL 2 15 ns 219
HXT input clock Input High Voltage VIH 0.7 1 V 0.7VDD to VDD (as printed, in multiples of VDD) 219
HXT input clock Input Low Voltage VIL 0 0.3 V 0 to 0.3VDD (as printed, in multiples of VDD) 219
HIRC Supply Voltage VHRC 1.62 1.8 1.98 V 220
HIRC Center Frequency fHRC 22.1184 MHz 220
HIRC Calibrated Oscillator Frequency accuracy fHRC -1 1 % TA = 25 ℃, VDD = 5 V 220
HIRC Calibrated Oscillator Frequency accuracy fHRC -2 2 % TA = -40 ~ 105, VDD = 2.5 V ~ 5.5 V 220
HIRC Operating Current IHRC 790 μA TA = 25 ℃, VDD = 5 V 220
LIRC Supply Voltage VLRC 2.5 5.5 V 222
LIRC Center Frequency fLRC 10 kHz 222
LIRC Oscillator Frequency accuracy fLRC -30 30 % VDD = 2.5 V ~ 5.5 V, TA = 25 222
LIRC Oscillator Frequency accuracy fLRC -50 50 % VDD = 2.5 V ~ 5.5 V, TA = -40 ~ +105 222
ADC Resolution 12 Bit 223
ADC Differential Nonlinearity Error DNL -2 2 LSB 223
ADC Integral Nonlinearity Error INL -2 2 LSB 223
ADC Offset Error EO 3 LSB 223
ADC Gain Error EG -3 LSB 223
ADC Absolute Error EA 4 LSB 223
ADC Clock Frequency FADC 21 MHz AVDD = 4.5~5.5 V 223
ADC Clock Frequency FADC 8.4 MHz AVDD = 2.5~5.5 V 223
ADC Sample Rate FS 1000 kSPS AVDD = 4.5~5.5 V, TCONV = 21 clock, FADC = 21 Mhz 223
ADC Sample Rate FS 400 kSPS AVDD = 2.5~5.5 V, TCONV = 21 clock, FADC = 8.4 Mhz 223
ADC Supply Voltage AVDD 2.5 5.5 V 223
ADC Supply Current (Avg.) IDDA 2.8 mA AVDD = 5 V 223
ADC Analog Input Voltage VIN 0 V max printed as VREF 223
ADC Reference Voltage VREF 2.5 V AVDD = 5 V; max printed as AVDD 223
ADC Input Capacitance CIN 6 pF 223
ADC Input Load RIN 6.5 kΩ 223
DAC Analog Supply Current IDDA 350 uA AVDD = 5.5V, buffer ON 228
DAC Reference Supply Current IREF 260 uA VREF = 5.5V 228
DAC Settling Time TSTAB 4 8 us Transition between the lowest and the highest input codes when VO reaches final value ±1 LSB 228
DAC Update Rate FS 1 MSPS Transition between adjacent codes 228
DAC Wake-up Time TWAKEUP 10 us 228
Internal Voltage Reference supply VVREF 2.5 5.5 V AVDD 228
Vref(2.56V) Vref1 2.483 2.56 2.637 V AVDD >= 2.9V 228
Vref(2.048V) Vref2 1.986 2.048 2.109 V AVDD >= 2.5V 228
Vref(3.072V) Vref3 2.98 3.072 3.164 V AVDD >= 3.4V 228
Vref(4.096V) Vref4 3.973 4.096 4.219 V AVDD >= 4.5V 228
USB Input High (driven) VIH 2 V 228
USB Input Low VIL 0.8 V 228
USB Differential Input Sensitivity VDI 0.2 V /PADP-PADM/ 228
USB Differential Common-mode Range VCM 0.8 2.5 V Includes VDI range 228
USB Single-ended Receiver Threshold VSE 0.8 2 V 228
USB Receiver Hysteresis 200 mV 228
USB Output Low (driven) VOL 0 0.3 V 228
USB Output High (driven) VOH 2.8 3.6 V 228
USB Output Signal Cross Voltage VCRS 1.3 2 V 228
USB Pull-up Resistor RPU 1.425 1.575 kΩ 228
USB Driver Output Resistance ZDRV 10 Ω Steady state drive* 228
USB Transceiver Capacitance CIN 20 pF Pin to GND 228
USB Rise Time TFR 4 20 ns CL=50p 229
USB Fall Time TFF 4 20 ns CL=50p 229
USB Rise and Fall Time Matching TFRFF 90 111.11 % TFRFF=TFR/TFF 229
VBUS Pin Input Voltage VBUS 4 5 5.5 V 229
USB LDO Output Voltage VDD33 3.3 V 229
USB LDO External Bypass Capacitor Cbp 1 uF 229
Flash Supply Voltage VFLA 1.8 V TA = 25 230
Flash Endurance NENDUR 20000 cycles TA = 25 230
Flash Data Retention TRET 100 year TA = 25 230
Flash Read Current IDD1 13.5 mA TA = 25 230

CAD (KiCad official)

  • Symbol: M451RG6AE
  • Footprint: Package_QFP:LQFP-64_10x10mm_P0.5mm
  • 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)
  • 3D model files: m451rg6ae-etched.step / m451rg6ae-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); m451rg6ae.step / m451rg6ae.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Nuvoton Tech datasheet (242 pp, sha256 d2e54dfa7e24891a, retrieved 2026-10-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF