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M031LD2AE

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Nuvoton Tech Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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M031LD2AE

Nuvoton Tech · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)

M031LD2AE from Nuvoton Tech, in a LQFP-48(7x7). 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.5 bidirectional GPIO port B pin 5 with multi-function alternates ADC0_CH5, ACMP1_N, I2C0_SCL, PWM0_CH0, UART2_TXD, TM0 and INT0.
2 PB.4 bidirectional GPIO port B pin 4 with multi-function alternates ADC0_CH4, ACMP1_P1, I2C0_SDA, PWM0_CH1, UART2_RXD, TM1 and INT1.
3 PB.3 bidirectional GPIO port B pin 3 with multi-function alternates ADC0_CH3, ACMP0_N, I2C1_SCL, UART1_TXD, PWM0_CH2, PWM0_BRAKE0, TM2 and INT2.
4 PB.2 bidirectional GPIO port B pin 2 with multi-function alternates ADC0_CH2, ACMP0_P1, I2C1_SDA, UART1_RXD, PWM0_CH3, TM3 and INT3.
5 PB.1 bidirectional GPIO port B pin 1 with multi-function alternates ADC0_CH1, UART2_TXD, I2C1_SCL, PWM0_CH4, PWM1_CH4 and PWM0_BRAKE0.
6 PB.0 bidirectional GPIO port B pin 0 with multi-function alternates ADC0_CH0, UART2_RXD, SPI0_I2SMCLK, I2C1_SDA, PWM0_CH5, PWM1_CH5 and PWM0_BRAKE1.
7 PA.11 bidirectional GPIO port A pin 11 with multi-function alternates ACMP0_P0, USCI0_CLK and TM0_EXT.
8 PA.10 bidirectional GPIO port A pin 10 with multi-function alternates ACMP1_P0, USCI0_DAT0 and TM1_EXT.
9 PA.9 bidirectional GPIO port A pin 9 with multi-function alternates USCI0_DAT1, UART1_TXD and TM2_EXT.
10 PA.8 bidirectional GPIO port A pin 8 with multi-function alternates USCI0_CTL1, UART1_RXD, TM3_EXT and INT4.
11 PF.5 bidirectional GPIO port F pin 5 with multi-function alternates UART2_RXD, UART2_nCTS, PWM0_CH0, X32_IN (32 kHz crystal input) and ADC0_ST.
12 PF.4 bidirectional GPIO port F pin 4 with multi-function alternates UART2_TXD, UART2_nRTS, PWM0_CH1 and X32_OUT (32 kHz crystal output).
13 PF.3 bidirectional GPIO port F pin 3 with multi-function alternates UART0_TXD, I2C0_SCL and XT1_IN (external crystal input).
14 PF.2 bidirectional GPIO port F pin 2 with multi-function alternates UART0_RXD, I2C0_SDA and XT1_OUT (external crystal output).
15 PA.7 bidirectional GPIO port A pin 7 with multi-function alternates UART0_TXD, I2C1_SCL, PWM1_CH4, ACMP0_WLAT, TM2 and INT1.
16 PA.6 bidirectional GPIO port A pin 6 with multi-function alternates UART0_RXD, I2C1_SDA, PWM1_CH5, ACMP1_WLAT, TM3 and INT0.
17 PA.5 bidirectional GPIO port A pin 5 with multi-function alternates UART0_nCTS, UART0_TXD, I2C0_SCL and PWM0_CH0.
18 PA.4 bidirectional GPIO port A pin 4 with multi-function alternates SPI0_I2SMCLK, UART0_nRTS, UART0_RXD, I2C0_SDA and PWM0_CH1.
19 PA.3 bidirectional GPIO port A pin 3 with multi-function alternates SPI0_SS, UART1_TXD, I2C1_SCL, PWM0_CH2, CLKO and PWM1_BRAKE1.
20 PA.2 bidirectional GPIO port A pin 2 with multi-function alternates SPI0_CLK, UART1_RXD, I2C1_SDA and PWM0_CH3.
21 PA.1 bidirectional GPIO port A pin 1 with multi-function alternates SPI0_MISO, UART0_TXD, UART1_nCTS and PWM0_CH4.
22 PA.0 bidirectional GPIO port A pin 0 with multi-function alternates SPI0_MOSI, UART0_RXD, UART1_nRTS and PWM0_CH5.
23 PF.15 bidirectional GPIO port F pin 15 with multi-function alternates PWM0_BRAKE0, PWM0_CH1, TM2, CLKO and INT4.
24 nRESET input External active-low reset input for the MCU.
25 PF.0 bidirectional GPIO port F pin 0 with multi-function alternates UART1_TXD, I2C1_SCL, UART0_TXD and ICE_DAT (ICE data).
26 PF.1 bidirectional GPIO port F pin 1 with multi-function alternates UART1_RXD, I2C1_SDA, UART0_RXD and ICE_CLK (ICE clock).
27 PC.5 bidirectional GPIO port C pin 5 with multi-function alternates UART2_TXD, I2C1_SCL and PWM1_CH0.
28 PC.4 bidirectional GPIO port C pin 4 with multi-function alternates UART2_RXD, I2C1_SDA and PWM1_CH1.
29 PC.3 bidirectional GPIO port C pin 3 with multi-function alternates UART2_nRTS and PWM1_CH2.
30 PC.2 bidirectional GPIO port C pin 2 with multi-function alternates UART2_nCTS and PWM1_CH3.
31 PC.1 bidirectional GPIO port C pin 1 with multi-function alternates UART2_TXD, I2C0_SCL, PWM1_CH4 and ACMP0_O.
32 PC.0 bidirectional GPIO port C pin 0 with multi-function alternates UART2_RXD, I2C0_SDA, PWM1_CH5 and ACMP1_O.
33 PA.12 bidirectional GPIO port A pin 12 with multi-function alternate I2C1_SCL.
34 PA.13 bidirectional GPIO port A pin 13 with multi-function alternate I2C1_SDA.
35 PA.14 bidirectional GPIO port A pin 14 with multi-function alternate UART0_TXD.
36 PA.15 bidirectional GPIO port A pin 15 with multi-function alternate UART0_RXD.
37 VSS power_in Ground reference for the digital core and I/O.
38 LDO_CAP power_out Internal LDO output pin that requires an external capacitor; the capacitor value is not given in this excerpt.
39 VDD power_in Digital supply input for the MCU.
40 PC.14 bidirectional GPIO port C pin 14 with multi-function alternates SPI0_I2SMCLK, USCI0_CTL0 and TM1.
41 PB.15 bidirectional GPIO port B pin 15 with multi-function alternates ADC0_CH15, SPI0_SS, USCI0_CTL1, UART0_nCTS, PWM1_CH0, TM0_EXT and PWM0_BRAKE1.
42 PB.14 bidirectional GPIO port B pin 14 with multi-function alternates ADC0_CH14, SPI0_CLK, USCI0_DAT1, UART0_nRTS, PWM1_CH1, TM1_EXT and CLKO.
43 PB.13 bidirectional GPIO port B pin 13 with multi-function alternates ADC0_CH13, ACMP0_P3, ACMP1_P3, SPI0_MISO, USCI0_DAT0, UART0_TXD, PWM1_CH2 and TM2_EXT.
44 PB.12 bidirectional GPIO port B pin 12 with multi-function alternates ADC0_CH12, ACMP0_P2, ACMP1_P2, SPI0_MOSI, USCI0_CLK, UART0_RXD, PWM1_CH3 and TM3_EXT.
45 AVDD power_in Analog supply input for the ADC and analog peripherals.
46 AVSS power_in Analog ground for the ADC and analog peripherals.
47 PB.7 bidirectional GPIO port B pin 7 with multi-function alternates ADC0_CH7, UART1_TXD, PWM1_BRAKE0, PWM1_CH4, INT5 and ACMP0_O.
48 PB.6 bidirectional GPIO port B pin 6 with multi-function alternates ADC0_CH6, UART1_RXD, PWM1_BRAKE1, PWM1_CH5, INT4 and ACMP1_O.

Key specifications

Parameter Value
Manufacturer Nuvoton Tech
Package LQFP-48(7x7)
Category Embedded Processors & Controllers
Pins 48

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) VDD-VSS -0.3 4 V 228
Input voltage on 5V-tolerance I/O VIN 5.5 V 228
Input voltage on any other pin VIN 4 V 228
Maximum current into VDD ΣIDD 150 mA 228
Maximum current out of VSS ΣISS 100 mA 228
Maximum current sunk by a I/O pin IIO 20 mA 228
Maximum current sourced by a I/O pin IIO 20 mA 228
Maximum current sunk by total I/O pins 100 mA 228
Maximum current sourced by total I/O pins 100 mA 228
Maximum injected current by a I/O pin IINJ(PIN) -5 5 mA 228
Maximum injected current by total I/O pins ΣIINJ(PIN) -25 25 mA 228
Electrostatic discharge, human body mode VHBM -6000 6000 V ANSI/ESDA/JEDEC JS-001 (M03xB/C/D/E table) 231
Electrostatic discharge, charge device model VCDM -1000 1000 V ANSI/ESDA/JEDEC JS-002 (M03xB/C/D/E table) 231
Pin current for latch-up LU -400 400 mA JEDEC EIA/JESD78 231
Fast transient voltage burst VEFT -4.4 4.4 kV IEC 61000-4-4, class 4A 231
Operating ambient temperature TA -40 105 °C 230
Operating junction temperature TJ -40 125 °C 230
Storage temperature TST -65 150 °C 230
Operating ambient temperature (general operating conditions) TA -40 105 °C 234
Internal AHB clock frequency fHCLK 48 MHz VDD = 1.8 V~3.6V 234
Internal AHB clock frequency fHCLK 72 MHz VDD = 2.0 V~3.6V 234
Operation voltage (fHCLK up to 48 MHz) VDD 1.8 3.6 V fHCLK up to 48 MHz 234
Operation voltage (fHCLK up to 72 MHz) VDD 2 3.6 V fHCLK up to 72 MHz 234
Analog reference voltage VREF 1.8 V AVDD − VREF < 1.2 V 234
Band-gap voltage VBG 1.16 1.23 1.31 234
ESR of CLDO output capacitor RESR 0.1 10 Ω 234
Input leakage current ILK -1 1 A VSS < VIN < VDD, Open-drain or input only mode 244
Source current for quasi-bidirectional mode and high level ISR -25.5 -28 -31 µA VDD = 3.3 V, VIN=(VDD-0.4) V 245
Source current for quasi-bidirectional mode and high level ISR -19 -22 -24 µA VDD = 2.5 V, VIN=(VDD-0.4) V 245
Source current for quasi-bidirectional mode and high level ISR -10.5 -13 -16 µA VDD = 1.8 V, VIN=(VDD-0.4) V 245
Source current for push-pull mode and high level ISR -8 -10 -15 mA VDD = 3.3 V, VIN=(VDD-0.4) V 245
Source current for push-pull mode and high level ISR -6 -8 -13 mA VDD = 2.5 V, VIN=(VDD-0.4) V 245
Source current for push-pull mode and high level ISR -3.5 -5.5 -10.5 mA VDD = 1.8 V, VIN=(VDD-0.4) V 245
Sink current for push-pull mode and low level ISK 7.5 9 14.5 mA VDD = 3.3 V, VIN= 0.4 V 245
Sink current for push-pull mode and low level ISK 6 7.5 13 mA VDD = 2.5 V, VIN= 0.4 V 245
Sink current for push-pull mode and low level ISK 3.5 5 10.5 mA VDD = 1.8 V, VIN= 0.4 V 245
nRESET input filtered pulse time (power-down mode) tFR 75 155 µs Power down mode 245
POR reset voltage VPOR 1.35 1.5 1.65 V 256
LVR reset voltage VLVR 1.6 1.7 1.8 V 256
BOD brown-out detect voltage VBOD 1.8 2 2.2 V BODVL = 0 256
BOD brown-out detect voltage VBOD 2.3 2.5 2.7 V BODVL = 1 256
Oscillator frequency (HIRC) fHRC 47.52 48 48.48 MHz TA = 25 °C, VDD = 3.3V 246
Frequency drift over temperature and voltage (HIRC) -1 1 % TA = 25 °C, VDD = 3.3V 246
Frequency drift over temperature and voltage (HIRC) -2 2 % TA = -40 °C ~ +105 °C, VDD = 1.8 ~ 3.6V 246
Oscillator frequency (LIRC) FLRC 38.016 38.4 38.784 kHz 248
Frequency drift over temperature and voltage (LIRC) -1 1 % TA = 25 °C, VDD = 3.3V 248
Frequency drift over temperature and voltage (LIRC) -15 15 % TA = -40105 °C, VDD = 1.8V3.6V, without software calibration 248
Oscillator frequency (HXT crystal/resonator) fHXT 4 32 MHz 249
PLL input clock fPLL_in 3.2 32 MHz 254
PLL multiplier output clock fPLL_OUT 50 144 MHz 254
PLL locking time TL 500 µs 254
Program/erase endurance NENDUR 20000 cycles TJ = -40°C~125°C 273
Data retention TRET 65 year 20 kcycle, TJ = 55°C 273
Normal run mode, executed from Flash, all peripherals disable, 48 MHz IDD_RUN 8.5 10.8 mA Max at TA = 105 °C; typ at TA = 25 °C 235
Normal run mode, executed from Flash, all peripherals enable, 48 MHz IDD_RUN 19.5 24.21 mA Max at TA = 105 °C; typ at TA = 25 °C 235
Idle mode, all peripherals disable, 48 MHz IDD_IDLE 3.85 5.26 mA Max at TA = 105 °C; typ at TA = 25 °C 236
Idle mode, all peripherals enable, 48 MHz IDD_IDLE 14.94 18.79 mA Max at TA = 105 °C; typ at TA = 25 °C 236
Power-down mode, all peripherals disable IDD_PD 12 700 µA Max at TA = 105 °C; typ at TA = 25 °C 237
Thermal resistance junction-ambient, 48-pin LQFP (7x7 mm) θJA 60 °C/Watt Determined according to JESD51-2 230

CAD (KiCad official)

  • Symbol: M031LD2AE
  • Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
  • 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
  • 3D model files: m031ld2ae-etched.step / m031ld2ae-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); m031ld2ae.step / m031ld2ae.glb are the bare package body.

Provenance

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

  • Datasheet: Nuvoton Tech datasheet (283 pp, sha256 1a8a8f8110d5e2e0, retrieved 2026-10-18, tier: lcsc)
  • 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