# FM33LE016

**FUDAN MICRO** · Microcontroller Units (MCUs/MPUs/SOCs) · LQFP-64(10x10)

FM33LE016 from FUDAN MICRO, 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 | NRST | input | Global reset pin; holding it low for more than 60~90us resets the chip (not the debug logic) and exits low-power modes. |
| 2 | PA13 | bidirectional | GPIO with alternate functions UART0_RX, LPUART0_RX, ADC_IN6 and COMP1_INP3. |
| 3 | PA14 | bidirectional | GPIO with alternate functions UART0_TX, LPUART0_TX, ADC_IN7 and COMP1_INP4. |
| 4 | PA15 | bidirectional | GPIO with alternate functions WKUP0 wakeup, SVS external supply detection and ADC_IN10. |
| 5 | PA0 | bidirectional | GPIO with alternate functions LCD COM0 and UART4_RX. |
| 6 | PA1 | bidirectional | GPIO with alternate functions LCD COM1 and UART4_TX. |
| 7 | PA2 | bidirectional | GPIO with alternate functions LCD COM2, UART0_RX and LPUART0_RX. |
| 8 | PA3 | bidirectional | GPIO with alternate functions LCD COM3, UART0_TX and LPUART0_TX. |
| 9 | PA4 | bidirectional | GPIO with alternate functions LCD COM4/SEG28, GPT1_CH3 and COMP2_INN1. |
| 10 | PA5 | bidirectional | GPIO with alternate functions LCD COM5/SEG29, GPT1_CH4 and COMP2_INN2. |
| 11 | PA6 | bidirectional | GPIO with alternate functions LCD COM6/SEG30 and I2CSMB_SCL. |
| 12 | PA7 | bidirectional | GPIO with alternate functions LCD COM7/SEG31 and I2CSMB_SDA. |
| 13 | PA8 | bidirectional | GPIO with alternate functions LCD SEG0, LPT32_CH1, COMP2_INP1 and I2CSMB_ALERT. |
| 14 | PA9 | bidirectional | GPIO with alternate functions LCD SEG1, LPT32_CH2, COMP2_INP2 and ATIM_CH4. |
| 15 | PA10 | bidirectional | GPIO with alternate functions WKUP1 wakeup, LCD SEG2, LPT32_ETR, COMP1_INN1 and ATIM_CH3. |
| 16 | PA11 | bidirectional | GPIO with alternate function I2C clock SCL; a strong-drive true open-drain pin with 20mA sink capability that needs an external pull-up. |
| 17 | PA12 | bidirectional | GPIO with alternate function I2C data SDA; a strong-drive true open-drain pin with 20mA sink capability that needs an external pull-up. |
| 18 | PB0 | bidirectional | GPIO with alternate function UART2_RX. |
| 19 | PB1 | bidirectional | GPIO with alternate function UART2_TX. |
| 20 | PB2 | bidirectional | GPIO with alternate functions WKUP2 wakeup, UART4_RX and ATIM_CH1N. |
| 21 | PB3 | bidirectional | GPIO with alternate functions UART4_TX and ATIM_CH2N. |
| 22 | PB4 | bidirectional | GPIO with alternate functions LCD SEG3 and ATIM_CH1. |
| 23 | PB5 | bidirectional | GPIO with alternate functions LCD SEG4 and ATIM_CH2. |
| 24 | PB6 | bidirectional | GPIO with alternate functions LCD SEG5 and ATIM_CH3. |
| 25 | PB7 | bidirectional | GPIO with alternate functions LCD SEG6 and ATIM_CH4. |
| 26 | PB8 | bidirectional | GPIO with alternate functions LCD SEG7, SPI1_SSN and ATIM_CH3N. |
| 27 | PB9 | bidirectional | GPIO with alternate functions LCD SEG8, ANATST, SPI1_SCK and GPT0_ETR. |
| 28 | PB10 | bidirectional | GPIO with alternate functions LCD SEG9, SPI1_MISO and GPT0_CH1. |
| 29 | PB11 | bidirectional | GPIO with alternate functions LCD SEG10, SPI1_MOSI and GPT0_CH2. |
| 30 | PB12 | bidirectional | GPIO with alternate functions WKUP3 wakeup, FOUT1 clock output and ATIM_ETR. |
| 31 | PB13 | bidirectional | GPIO with alternate functions LCD SEG11, UART1_RX and LPUART1_RX. |
| 32 | PB14 | bidirectional | GPIO with alternate functions LCD SEG12, UART1_TX and LPUART1_TX. |
| 33 | VSS | power_in | Ground. |
| 34 | VDD | power_in | Main power supply, typical operating range 1.8~5.5V. |
| 35 | PC0 | bidirectional | GPIO with alternate functions I2CSMB_SCL and GPT1_CH1. |
| 36 | PC1 | bidirectional | GPIO with alternate functions I2CSMB_SDA and GPT1_CH2. |
| 37 | PC2 | bidirectional | GPIO with alternate functions XTHIN high-frequency crystal input, UART1_RX and LPUART1_RX. |
| 38 | PC3 | bidirectional | GPIO with alternate functions XTHOUT high-frequency crystal output, UART1_TX and LPUART1_TX. |
| 39 | PC4 | bidirectional | GPIO with alternate functions LCD SEG13, I2C SCL and UART5_RX. |
| 40 | PC5 | bidirectional | GPIO with alternate functions LCD SEG14, I2C SDA and UART5_TX. |
| 41 | PC6 | bidirectional | GPIO with alternate functions WKUP4 wakeup, LCD SEG15, GPT1_ETR, I2CSMB_ALERT and ADC_IN11. |
| 42 | PC7 | bidirectional | GPIO with alternate functions LCD SEG16, SPI2_SSN and ADC_IN8. |
| 43 | PC8 | bidirectional | GPIO with alternate functions LCD SEG17, SPI2_SCK and ADC_IN9. |
| 44 | PC9 | bidirectional | GPIO with alternate functions LCD SEG18, SPI2_MISO and ADC_IN0. |
| 45 | PC10 | bidirectional | GPIO with alternate functions WKUP5 wakeup, LCD SEG19, SPI2_MOSI and ADC_IN1. |
| 46 | PC11 | bidirectional | GPIO with alternate functions LCD SEG20, U7816CLK and GPT0_CH3. |
| 47 | PC12 | bidirectional | GPIO with alternate functions LCD SEG21, U7816IO and GPT0_CH4. |
| 48 | PD9 | bidirectional | GPIO with alternate function XT32KO 32768Hz crystal output. |
| 49 | PD10 | bidirectional | GPIO with alternate function XT32KI 32768Hz crystal input. |
| 50 | VDD15 | power_out | LDO output (1.5V core supply) requiring an external 100nF capacitor to ground. |
| 51 | VSS | power_in | Ground. |
| 52 | VDD | power_in | Main power supply, typical operating range 1.8~5.5V. |
| 53 | VREFN | power_in | Analog ground (ADC reference negative). |
| 54 | VREFP | power_in | Analog supply and ADC reference input, allowed range 1.8V ≤ VREFP ≤ VDD. |
| 55 | PD11 | bidirectional | GPIO with alternate functions WKUP6 wakeup, FOUT0 clock output, ATIM_BRK1 and ADC_IN2. |
| 56 | PD0 | bidirectional | GPIO with alternate functions LCD SEG22, UART5_RX and ADC_IN3. |
| 57 | PD1 | bidirectional | GPIO with alternate functions LCD SEG23, UART5_TX and ADC_IN4. |
| 58 | PD2 | bidirectional | GPIO with alternate functions LCD SEG24, SPI1_SSN and ADC_IN5. |
| 59 | PD3 | bidirectional | GPIO with alternate functions LCD SEG25 and SPI1_SCK. |
| 60 | PD4 | bidirectional | GPIO with alternate functions LCD SEG26, SPI1_MISO and COMP1_INP1. |
| 61 | PD5 | bidirectional | GPIO with alternate functions LCD SEG27, SPI1_MOSI and COMP1_INP2. |
| 62 | PD6 | bidirectional | GPIO with alternate functions WKUP7 wakeup, ANATST and ATIM_BRK2. |
| 63 | PD7 | bidirectional | GPIO with alternate functions SWCLK (SWD clock) and UART2_RX. |
| 64 | PD8 | bidirectional | GPIO with alternate functions SWIO (SWD data) and UART2_TX. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | FUDAN MICRO |
| Package | LQFP-64(10x10) |
| Category | Single Chip Microcomputer/Microcontroller |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | VDD-VSS | -0.3 |  | 6 | V | includes VDD, VDDA | 44 |
| Pin voltage | VPIN | -0.3 |  | 6 | V | VSS-0.3 to 6 V | 44 |
| VDD to VDDA difference | /ΔVDD/ |  |  | 50 | mV |  | 44 |
| Difference among all ground pins | /ΔVSS/ |  |  | 50 | mV |  | 44 |
| Operating temperature | TA | -40 |  | 85 | °C |  | 44 |
| Storage temperature | TSTG | -55 |  | 150 | °C |  | 44 |
| ESD HBM | HBM | -4000 |  | 4000 | V | TA=25℃, JEDEC JS-001 | 44 |
| ESD CDM | CDM | -1000 |  | 1000 | V | TA=25℃, JEDEC JS-002 | 44 |
| IO Latchup | LU | -200 |  | 200 | mA | -(0.5VDD) < VI < (1.5VDD), TA=25℃, JESD78E | 44 |
| Max current into VDD | ΣIVDD |  |  | 90 | mA | source | 44 |
| Max current out of VSS | ΣIVSS |  |  | 70 | mA | sink | 44 |
| Total IO sink current | ΣIIO |  |  | 70 | mA | all IO sink | 44 |
| Total IO source current | ΣIIO |  |  | 90 | mA | all IO source | 44 |
| AHB clock frequency | fHCLK | 0 |  | 64 | MHz |  | 45 |
| APB clock frequency | fPCLK | 0 |  | 64 | MHz |  | 45 |
| Operating voltage (CPU running), power-up | VDD | 1.8 |  | 5.5 | V | 上电 (power-up) | 45 |
| Operating voltage (CPU running), power-down | VDD | 1.65 |  | 5.5 | V | 下电 (power-down) | 45 |
| Analog operating voltage | VDDA | 1.8 |  | 5.5 | V | VREFP=VDD, VREFN=VSS | 45 |
| Junction temperature | TJ | -40 |  | 125 | °C |  | 45 |

## CAD (KiCad official)

- Symbol: `FM33LE016`
- Footprint: `Package_QFP:LQFP-64_10x10mm_P0.5mm`
- 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)
- 3D model files: `fm33le016-etched.step` / `fm33le016-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fm33le016.step` / `fm33le016.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [FUDAN MICRO datasheet](docs/fm33le016-datasheet.pdf) (674 pp, sha256 `5813d667fe7dc378`, 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`, 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](docs/fm33le016-datasheet.pdf)