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NUC120RE3DN

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Nuvoton Tech Microcontrollers (MCU/MPU/SOC), LQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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NUC120RE3DN

Nuvoton Tech · Microcontrollers (MCU/MPU/SOC) · LQFP-64(10x10)

NUC120RE3DN 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.14 bidirectional General-purpose digital I/O pin, with alternate functions external interrupt INT0 and SPI3 second slave select SPISS31.
2 PB.13 bidirectional General-purpose digital I/O pin, with alternate function comparator 1 output CPO1.
3 PB.12 bidirectional General-purpose digital I/O pin, with alternate functions comparator 0 output CPO0 and clock divider output CLKO.
4 X32O output Output pin of the external 32.768 kHz crystal oscillator used for RTC and low-power operation.
5 X32I input Input pin of the external 32.768 kHz crystal oscillator used for RTC and low-power operation.
6 PA.11 bidirectional General-purpose digital I/O pin, with alternate function I2C1 clock SCL.
7 PA.10 bidirectional General-purpose digital I/O pin, with alternate function I2C1 data SDA.
8 PA.9 bidirectional General-purpose digital I/O pin, with alternate function I2C0 clock SCL.
9 PA.8 bidirectional General-purpose digital I/O pin, with alternate function I2C0 data SDA.
10 PB.4 bidirectional General-purpose digital I/O pin, with alternate function UART1 receive input RXD1.
11 PB.5 bidirectional General-purpose digital I/O pin, with alternate function UART1 transmit output TXD1.
12 PB.6 bidirectional General-purpose digital I/O pin, with alternate function UART1 request-to-send output RTS1.
13 PB.7 bidirectional General-purpose digital I/O pin, with alternate function UART1 clear-to-send input CTS1.
14 LDO power_out Output pin of the internal LDO, which requires an external capacitor placed close to the pin.
15 VDD power_in Power supply pin for the I/O ports, the internal PLL/LDO source and the digital circuits.
16 VSS power_in Ground pin.
17 VBUS power_in USB power pin supplied by the USB host or hub.
18 VDD33 power_out Internal 3.3 V output pin of the USB regulator, which requires an external bypass capacitor.
19 D- bidirectional USB full-speed differential signal D-.
20 D+ bidirectional USB full-speed differential signal D+.
21 PB.0 bidirectional General-purpose digital I/O pin, with alternate function UART0 receive input RXD0.
22 PB.1 bidirectional General-purpose digital I/O pin, with alternate function UART0 transmit output TXD0.
23 PB.2 bidirectional General-purpose digital I/O pin, with alternate function UART0 request-to-send output RTS0.
24 PB.3 bidirectional General-purpose digital I/O pin, with alternate function UART0 clear-to-send input CTS0.
25 PC.3 bidirectional General-purpose digital I/O pin, with alternate functions SPI0 MOSI0 (master out/slave in) and I2S data output I2SDO.
26 PC.2 bidirectional General-purpose digital I/O pin, with alternate functions SPI0 MISO0 (master in/slave out) and I2S data input I2SDI.
27 PC.1 bidirectional General-purpose digital I/O pin, with alternate functions SPI0 serial clock SPICLK0 and I2S bit clock I2SBCLK.
28 PC.0 bidirectional General-purpose digital I/O pin, with alternate functions SPI0 slave select SPISS00 and I2S left/right clock I2SLRCLK.
29 PE.5 bidirectional General-purpose digital I/O pin, with alternate function PWM5 output.
30 PB.11 bidirectional General-purpose digital I/O pin, with alternate functions Timer3 external counter input TM3 and PWM4 output.
31 PB.10 bidirectional General-purpose digital I/O pin, with alternate functions Timer2 external counter input TM2 and SPI0 second slave select SPISS01.
32 PB.9 bidirectional General-purpose digital I/O pin, with alternate functions Timer1 external counter input TM1 and SPI1 second slave select SPISS11.
33 PC.11 bidirectional General-purpose digital I/O pin, with alternate function SPI1 MOSI0 (master out/slave in).
34 PC.10 bidirectional General-purpose digital I/O pin, with alternate function SPI1 MISO0 (master in/slave out).
35 PC.9 bidirectional General-purpose digital I/O pin, with alternate function SPI1 serial clock SPICLK1.
36 PC.8 bidirectional General-purpose digital I/O pin, with alternate function SPI1 slave select SPISS10.
37 PA.15 bidirectional General-purpose digital I/O pin, with alternate functions PWM3 output and I2S master clock output I2SMCLK.
38 PA.14 bidirectional General-purpose digital I/O pin, with alternate function PWM2 output.
39 PA.13 bidirectional General-purpose digital I/O pin, with alternate function PWM1 output.
40 PA.12 bidirectional General-purpose digital I/O pin, with alternate function PWM0 output.
41 ICE_DAT bidirectional Serial data pin of the debugger interface.
42 ICE_CK input Serial clock pin of the debugger interface.
43 AVSS power_in Analog circuit ground pin.
44 PA.0 bidirectional General-purpose digital I/O pin, with alternate function ADC analog input ADC0.
45 PA.1 bidirectional General-purpose digital I/O pin, with alternate function ADC analog input ADC1.
46 PA.2 bidirectional General-purpose digital I/O pin, with alternate function ADC analog input ADC2.
47 PA.3 bidirectional General-purpose digital I/O pin, with alternate function ADC analog input ADC3.
48 PA.4 bidirectional General-purpose digital I/O pin, with alternate function ADC analog input ADC4.
49 PA.5 bidirectional General-purpose digital I/O pin, with alternate function ADC analog input ADC5.
50 PA.6 bidirectional General-purpose digital I/O pin, with alternate function ADC analog input ADC6.
51 PA.7 bidirectional General-purpose digital I/O pin, with alternate functions ADC analog input ADC7 and SPI2 second slave select SPISS21.
52 AVDD power_in Power supply pin for the internal analog circuits.
53 PC.7 bidirectional General-purpose digital I/O pin, with alternate function comparator 0 negative input CPN0.
54 PC.6 bidirectional General-purpose digital I/O pin, with alternate function comparator 0 positive input CPP0.
55 PC.15 bidirectional General-purpose digital I/O pin, with alternate function comparator 1 negative input CPN1.
56 PC.14 bidirectional General-purpose digital I/O pin, with alternate function comparator 1 positive input CPP1.
57 PB.15 bidirectional General-purpose digital I/O pin, with alternate function external interrupt input /INT1.
58 XT1_OUT output Output pin of the external 4~24 MHz high-speed crystal oscillator.
59 XT1_IN input Input pin of the external 4~24 MHz high-speed crystal oscillator.
60 /RESET input External reset input, active low, which resets the MCU to its initial state when pulled low and has an internal pull-up.
61 VSS power_in Ground pin.
62 VDD power_in Power supply pin for the I/O ports, the internal PLL/LDO source and the digital circuits.
63 PVSS power_in PLL ground pin.
64 PB.8 bidirectional General-purpose digital I/O pin, with alternate functions ADC external trigger input STADC and Timer0 external counter input TM0.

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 supply voltage (VDD-VSS) VDD-VSS -0.3 7 V 142
Oscillator frequency 1/tCLCL 4 24 MHz 142
Operating temperature TA -40 85 C 142
Storage temperature TST -55 150 C 142
VDD maximum inflow current 120 mA 142
VSS maximum outflow current 120 mA 142
Single I/O pin maximum sink current 35 mA 142
Single I/O pin maximum source current 35 mA 142
Sum of all I/O pins maximum sink current 100 mA 142
Sum of all I/O pins maximum source current 100 mA 142
Operating voltage VDD 2.5 5.5 V VDD = 2.5V ~ 5.5V up to 50 MHz 143
LDO output voltage VLDO 1.62 1.8 1.98 V VDD > 2.5V 143
PA-PF input leakage current ILK -2 2 μA VDD = 5.5V, 0<VIN<VDD 147
PA-PF input low voltage (TTL input) VIL1 -0.3 0.8 V VDD = 4.5V 146
PA-PF input low voltage (TTL input) VIL1 -0.3 0.6 V VDD = 2.5V 146
PA-PF input high voltage (TTL input) VIH1 2 V VDD = 5.5V 146
PA-PF input high voltage (TTL input) VIH1 1.5 V VDD = 3.0V 146
XT1_IN input low voltage VIL3 0 0.8 V VDD = 4.5V 147
XT1_IN input low voltage VIL3 0 0.4 V VDD = 3.0V 147
XT1_IN input high voltage VIH3 3.5 V VDD = 5.5V 147
XT1_IN input high voltage VIH3 2.4 V VDD = 3.0V 147
X32_IN input low voltage VIL4 0 0.4 V 147
/RESET pin negative-going threshold voltage (Schmitt input) VILS -0.5 V 147
PA-PF source current (quasi-bidirectional) ISR11 -300 -370 -450 μA VDD = 4.5V, VS = 2.4V 147
PA-PF source current (quasi-bidirectional) ISR12 -50 -70 -90 μA VDD = 2.7V, VS = 2.2V 147
PA-PF source current (quasi-bidirectional) ISR12 -40 -60 -80 μA VDD = 2.5V, VS = 2.0V 147
PA-PF source current (push-pull) ISR21 -24 -28 -32 mA VDD = 4.5V, VS = 2.4V 147
PA-PF source current (push-pull) ISR22 -4 -6 -8 mA VDD = 2.7V, VS = 2.2V 147
PA-PF source current (push-pull) ISR22 -3 -5 -7 mA VDD = 2.5V, VS = 2.0V 147
PA-PF sink current (quasi-bidirectional and push-pull) ISK1 10 16 20 mA VDD = 4.5V, VS = 0.45V 147
PA-PF sink current (quasi-bidirectional and push-pull) ISK1 7 10 13 mA VDD = 2.7V, VS = 0.45V 147
PA-PF sink current (quasi-bidirectional and push-pull) ISK1 6 9 12 mA VDD = 2.5V, VS = 0.45V 147
Brown-out voltage VBO2.2 2.1 2.2 2.3 V BOV_VL [1:0] =00b 147
Brown-out voltage VBO2.7 2.6 2.7 2.8 V BOV_VL [1:0] =01b 147
Brown-out voltage VBO3.8 3.5 3.7 3.9 V BOV_VL [1:0] =10b 147
Brown-out voltage VBO4.5 4.2 4.4 4.6 V BOV_VL [1:0] =11b 147
BOD voltage hysteresis range VBH 30 150 mV VDD = 2.5V~5.5V 147
Flash read current IDD1 0.15 0.5 mA/MHz 155
Flash power-down current IPD 1 20 μA 155
Flash supply voltage (VDD from chip LDO) VDD 1.62 1.8 1.98 V 155
USB_VBUS input voltage USB_VBUS 4 5 5.5 V 154
USB LDO output voltage USB_VDD33_CAP 3 3.3 3.6 V 154
External bypass capacitor Cbp 1 uF 154
Temperature sensor supply voltage 2.5 5.5 V 152
Temperature sensor operating temperature -40 85 C 152
Comparator operating voltage AVDD 2.5 5.5 V 152
Comparator operating temperature -40 25 85 ℃ 152
Comparator operating current 20 40 μA VDD=3.0 V 152
Comparator input offset voltage 5 15 mV 152
Crystal operating voltage VDD 2.5 5.5 V 148
Crystal operating temperature -40 85 ℃ 148
External crystal input clock frequency 4 24 MHz 148

CAD (KiCad official)

  • Symbol: NUC120RE3DN
  • Footprint: Package_QFP:LQFP-64_10x10mm_P0.5mm
  • 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)
  • 3D model files: nuc120re3dn-etched.step / nuc120re3dn-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); nuc120re3dn.step / nuc120re3dn.glb are the bare package body.

Provenance

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

  • Datasheet: Nuvoton Tech datasheet (160 pp, sha256 6501ceacfb436f01, retrieved 2026-10-21, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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