component
LH32M0S32BQME
Public Made by Adomby adom
Legendsemi Microcontrollers (MCU/MPU/SOC), QFN-48-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLH32M0S32BQME
Legendsemi · Microcontrollers (MCU/MPU/SOC) · QFN-48-EP(6x6)
LH32M0S32BQME from Legendsemi, in a QFN-48-EP(6x6). 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 | CAP2 | passive | Charge-exchange capacitor connection for the LCD charge pump. |
| 2 | CAP1 | passive | Charge-exchange capacitor connection for the LCD charge pump. |
| 3 | NRST | input | External reset input, active low. |
| 4 | P0.2/AIN2/I2C_SDA/UART_TX/SPI_NSS/SWDIO | bidirectional | GPIO0.2 with ADC input AIN2, I2C_SDA, UART_TX, SPI_NSS and SWDIO functions. |
| 5 | P0.3/AIN3/COMPN/I2C_SCL/UART_RX/SPI_SCLK/SWCLK | bidirectional | GPIO0.3 with ADC input AIN3, analog comparator negative input COMPN, I2C_SCL, UART_RX, SPI_SCLK and SWCLK functions. |
| 6 | VSSA | power_in | Analog ground. |
| 7 | VDDA | power_in | Analog power supply (2.2~3.6V operating range). |
| 8 | VREFN | passive | ADC reference ground, connected to analog ground. |
| 9 | VS/REFP | power_out | ADC regulated output (positive reference) able to supply up to 8mA to ground. |
| 10 | AIN0 | input | ADC input AIN0. |
| 11 | AIN1 | input | ADC input AIN1. |
| 12 | ACM/LVD/AIN4 | output | 1.2V reference regulated output, also low-voltage-detect/analog comparator positive input and ADC input AIN4. |
| 13 | P0.4/AIN5/I2C_SDA | bidirectional | GPIO0.4 with ADC input AIN5 and I2C_SDA. |
| 14 | P0.5/AIN6/PWM2/I2C_SCL | bidirectional | GPIO0.5 with ADC input AIN6, PWM2 output and I2C_SCL. |
| 15 | P0.6/AIN7/UART_TX/LVD | bidirectional | GPIO0.6 with ADC input AIN7, UART_TX and low-voltage-detect input. |
| 16 | P0.7/UART_RX/COMPOUT | bidirectional | GPIO0.7 with UART_RX and analog comparator output. |
| 17 | P0.0/BZ/QSPI_CLK | bidirectional | GPIO0.0 with buzzer output and QSPI_CLK. |
| 18 | P0.1/SPI_MOSI/PWM6/QSPI_NSS | bidirectional | GPIO0.1 with SPI_MOSI, PWM6 output and QSPI_NSS. |
| 19 | P1.0/SPI_MISO/PWM5/QSPI_IO0 | bidirectional | GPIO1.0 with SPI_MISO, PWM5 output and QSPI_IO0. |
| 20 | P1.1/SPI_SCLK/PWM4/QSPI_IO1 | bidirectional | GPIO1.1 with SPI clock, PWM4 output and QSPI_IO1. |
| 21 | P1.2/SPI_NSS/PWM3/QSPI_IO2 | bidirectional | GPIO1.2 with SPI_NSS, PWM3 output and QSPI_IO2. |
| 22 | P1.3/SEG20/PWM1/QSPI_IO3 | bidirectional | GPIO1.3 with LCD SEG20, PWM1 output and QSPI_IO3. |
| 23 | P1.4/SEG19/SCLK_SPI | bidirectional | GPIO1.4 with LCD SEG19 and SPI clock. |
| 24 | P1.5/SEG18/SPI_NSS/XIN | bidirectional | GPIO1.5 with LCD SEG18, SPI function and 32.768kHz crystal input XIN. |
| 25 | P1.6/SEG17/I2C_SCL/GPIO_CLK/BZ/COMPOUT/XOUT | bidirectional | GPIO1.6 with LCD SEG17, I2C_SCL, input/output clock, buzzer output, comparator output and 32.768kHz crystal output XOUT. |
| 26 | P1.7/SEG16/I2C_SDA/SPI_MISO/BZn | bidirectional | GPIO1.7 with LCD SEG16, I2C_SDA, SPI_MISO and complementary buzzer output. |
| 27 | P2.0/SEG15/UART_TX/SPI_MOSI/PWM7/BZ | bidirectional | GPIO2.0 with LCD SEG15, UART_TX, SPI_MOSI, PWM7 and buzzer output. |
| 28 | P2.1/SEG14/UART_RX/PWM2/SPI_MISO | bidirectional | GPIO2.1 with LCD SEG14, UART_RX, PWM2 output and SPI_MISO. |
| 29 | P2.2/SEG13/LED8/BZ/PWM1/SPI_SCLK | bidirectional | GPIO2.2 with LCD SEG13, LED8, buzzer output, PWM1 output and SPI_SCLK. |
| 30 | P2.3/SEG12/LED7/SPI_MOSI/PWM6 | bidirectional | GPIO2.3 with LCD SEG12, LED7, SPI_MOSI and PWM6 output. |
| 31 | P2.4/SEG11/LED6/SPI_MISO/PWM5 | bidirectional | GPIO2.4 with LCD SEG11, LED6, SPI_MISO and PWM5 output. |
| 32 | P2.5/SEG10/LED5/SPI_SCLK/PWM4 | bidirectional | GPIO2.5 with LCD SEG10, LED5, SPI clock and PWM4 output. |
| 33 | P2.6/SEG9/LED4/SPI_NSS/PWM3 | bidirectional | GPIO2.6 with LCD SEG9, LED4, SPI_NSS and PWM3 output. |
| 34 | P2.7/SEG8/LED3/GPIO_CLK/TM1_BKIN | bidirectional | GPIO2.7 with LCD SEG8, LED3, input clock and Timer1 brake input. |
| 35 | P3.0/SEG7/LED2/PWM1 | bidirectional | GPIO3.0 with LCD SEG7, LED2 and PWM1 output. |
| 36 | P3.1/SEG6/LED1/PWM2 | bidirectional | GPIO3.1 with LCD SEG6, LED driver output and PWM2 output. |
| 37 | P3.2/SEG5 | bidirectional | GPIO3.2 with LCD SEG5. |
| 38 | P3.3/SEG4/UART_CTS | bidirectional | GPIO3.3 with LCD SEG4 and UART_CTS. |
| 39 | P3.4/SEG3/UART_RTS | bidirectional | GPIO3.4 with LCD SEG3 and UART_RTS. |
| 40 | P3.5/SEG2/QSP_NSS/UART_RX/PWM7 | bidirectional | GPIO3.5 with LCD SEG2, QSPI chip select, UART_RX and PWM7 output. |
| 41 | P3.6/SEG1/QSPI_SCLK/UART_TX/TM1_BKIN | bidirectional | GPIO3.6 with LCD SEG1, QSPI_SCLK, UART_TX and Timer1 brake signal. |
| 42 | P3.7/COM4/QSPI_IO0/BZ | bidirectional | GPIO with LCD COM4, QSPI_IO0 and buzzer output. |
| 43 | P4.0/COM3/QSPI_IO1/BZn | bidirectional | GPIO with LCD COM3, QSPI_IO1 and complementary buzzer output. |
| 44 | P4.1/COM2/QSPI_IO2 | bidirectional | GPIO with LCD COM2 and QSPI_IO2. |
| 45 | P4.2/COM1/QSPI_IO3/COMPOUT | bidirectional | GPIO with LCD COM1, QSPI_IO3 and analog comparator output. |
| 46 | VSS | power_in | Digital ground. |
| 47 | VDD | power_in | Digital power supply (2.2~3.6V operating range). |
| 48 | VLCD | power_in | LCD drive supply: external capacitor on the internal charge pump output when driving LCD; internally shorted to VDD when the charge pump is off. |
| 49 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Legendsemi |
| Package | QFN-48-EP(6x6) |
| Category | Embedded Processors & Controllers |
| Pins | 49 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| AVDD to AGND voltage | AVDD | -0.3 | 3.9 | V | 230 | ||
| DVDD to DGND voltage | DVDD | -0.3 | 3.9 | V | 230 | ||
| AGND to IOGND voltage | AGND | -0.3 | 0.3 | V | 230 | ||
| DGND to IOGND voltage | DGND | -0.3 | 0.3 | V | 230 | ||
| VREFP to VREFN voltage | VCAP | -0.3 | 3.9 | V | 230 | ||
| IO pin voltage | VIO | -0.3 | 3.9 | V | 230 | ||
| Storage temperature | Tstorage | -65 | 150 | ℃ | 230 | ||
| Junction temperature | Tjunction | -40 | 125 | ℃ | 230 | ||
| Current sunk into any IO pin | Isink | 25 | mA | 230 | |||
| Current sourced from any IO pin | Isource | -25 | mA | 230 | |||
| Total current into all IO pins | Isink_tot | 80 | mA | 230 | |||
| Total current out of all IO pins | Isource_tot | -80 | mA | 230 | |||
| AVDD operating voltage | AVDD | 2.2 | 3.6 | V | 230 | ||
| DVDD operating voltage | DVDD | 2.2 | 3.6 | V | 230 | ||
| Operating ambient temperature | Ta | -40 | 105 | ℃ | 230 | ||
| Junction temperature | Tj | -40 | 125 | ℃ | 230 | ||
| MCU clock frequency | Fclk | 0 | 32 | MHz | 230 | ||
| IO input voltage range | VIO | -0.3 | 3.6 | V | 230 | ||
| External reset minimum pulse width | Treset | 1.5 | μS | 230 | |||
| Power-up start-up time | Tstart-up | 40 | mS | 230 | |||
| DVDD power-on reset threshold | TVDD-POR | 2 | V | 230 | |||
| DVDD power-down reset threshold | TVDD-fall | 1.8 | V | 230 | |||
| DVDD_REG power-down reset threshold | TDVDD_REG_fall | 1.62 | V | 230 | |||
| DVDD power-down monitor threshold | PSM | 2.2 | 3.3 | V | 230 | ||
| IO supply | DVDD | 2.2 | 3.3 | 3.6 | V | 230 | |
| Input high level | VIH | 2.2 | V | 230 | |||
| Input low level | VIL | -0.3 | V | 230 | |||
| Output low level | VOL | 0.4 | V | 230 | |||
| Output high level | VOH | 2 | V | 230 | |||
| Input leakage current | IL | -10 | 10 | µA | 230 | ||
| Output current | Io | 30 | mA | 230 | |||
| Flash data retention | RY | 10 | Years | 231 | |||
| Internal 32kHz oscillator accuracy | Faccuray_LRC | -3 | 3 | % | 231 | ||
| Internal 32MHz oscillator frequency | F32M | 32 | MHz | 231 | |||
| Internal 32MHz oscillator accuracy | Faccuray_HRC | 1 | % | 231 | |||
| Internal 32kHz oscillator frequency | F32k | 32 | kHz | 231 | |||
| Crystal frequency | FXTAL | 32 | kHz | 231 | |||
| Crystal load capacitance | CL | 20 | pF | 231 |
CAD (KiCad official)
- Symbol:
LH32M0S32BQME - Footprint:
Package_DFN_QFN:QFN-48-1EP_6x6mm_P0.4mm_EP4.2x4.2mm - 3D model: QFN-48-EP(6x6), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal QFN height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
lh32m0s32bqme-etched.step/lh32m0s32bqme-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lh32m0s32bqme.step/lh32m0s32bqme.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Legendsemi datasheet (237 pp, sha256
68e4fc70a88a0840, retrieved 2026-10-22, 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, primaryclaude-sonnet-5-5(text), consensusclaude-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).