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FM33LG048A

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FUDAN MICRO Microcontroller Units (MCUs/MPUs/SOCs), LQFP-80(12X12). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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FM33LG048A

FUDAN MICRO · Microcontroller Units (MCUs/MPUs/SOCs) · LQFP-80(12X12)

FM33LG048A from FUDAN MICRO, in a LQFP-80(12X12). 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 PD10 bidirectional GPIO with CAN_RX (CAN receive) and ADC_IN18 (ADC input channel) functions.
2 PE9 bidirectional GPIO with CAN_TX (CAN transmit) and ADC_IN19 (ADC input channel) functions.
3 PA13 bidirectional GPIO with UART0_RX, LPUART0_RX (low-power UART receive) and ADC_IN4 functions.
4 PA14 bidirectional GPIO with UART0_TX, LPUART0_TX (low-power UART transmit) and ADC_IN11 functions.
5 PA15 bidirectional GPIO with WKUP0 (external wake-up), SVS (external supply detection) and COMP3_OUT (comparator output) functions.
6 PA0 bidirectional GPIO with COM0 (LCD drive), UART4_RX, ADC_IN5 and LUT3_OUT (PGL output) functions.
7 PA1 bidirectional GPIO with COM1 (LCD drive), UART4_TX, ADC_IN12 and LUT2_OUT (PGL output) functions.
8 PA2 bidirectional GPIO with COM2 (LCD drive), UART0_RX and LPUART0_RX functions.
9 PA3 bidirectional GPIO with COM3 (LCD drive), UART0_TX and LPUART0_TX functions.
10 PA4 bidirectional GPIO with COM4/SEG28 (LCD drive), GPT1_CH3 timer channel and COMP2_INN1 comparator input functions.
11 PA5 bidirectional GPIO with COM5/SEG29 (LCD drive), GPT1_CH4 timer channel and COMP2_INN2 comparator input functions.
12 PA6 bidirectional GPIO with COM6/SEG30 (LCD drive), OPA1_INN2 (OPA input) and CAN_RX functions.
13 PA7 bidirectional GPIO with COM7/SEG31 (LCD drive), OPA1_INP2 (OPA input) and CAN_TX functions.
14 PA8 bidirectional GPIO with SEG0 (LCD drive), LPT32_CH1, SPI1_SSN and COMP2_INP1 comparator input functions.
15 PA9 bidirectional GPIO with SEG1 (LCD drive), LPT32_CH2, SPI1_SCK and COMP2_INP2 comparator input functions.
16 PA10 bidirectional GPIO with WKUP1 (external wake-up), SEG2 (LCD drive), LPT32_ETR (external trigger input) and COMP1_INN1 comparator input functions.
17 PA11 bidirectional GPIO with SEG32 (LCD drive), SCL (I2C clock) and LPUART2_RX functions.
18 PA12 bidirectional GPIO with SEG33 (LCD drive), SDA (I2C data) and LPUART2_TX functions.
19 PD9 bidirectional GPIO with WKUP8 (external wake-up) function.
20 PE8 bidirectional General-purpose I/O.
21 PB0 bidirectional GPIO with SEG34 (LCD drive), UART3_RX, SPI1_MISO and OPA1_OUT3 functions.
22 PB1 bidirectional GPIO (description header printed as external wake-up) with SEG35 (LCD drive), UART3_TX, SPI1_MOSI and OPA1_OUT4 functions.
23 PB2 bidirectional GPIO with WKUP2, VCIN1 (LCD capacitor pin), UART4_RX and ATIM_CH1N functions.
24 PB3 bidirectional GPIO with VCIN2 (LCD capacitor pin), UART4_TX and ATIM_CH2N functions.
25 PB4 bidirectional GPIO with SEG3 (LCD drive), ATIM_CH1, LPUART2_RX and COMP3_INN1 functions.
26 PB5 bidirectional GPIO with SEG4 (LCD drive), ATIM_CH2, LPUART2_TX and COMP3_INN2 functions.
27 PB6 bidirectional GPIO with SEG5 (LCD drive), ATIM_CH3 and SPI2_SSN functions.
28 PB7 bidirectional GPIO with SEG6 (LCD drive), ATIM_CH4, SPI2_SCK and ANATST (factory test channel) functions.
29 PB8 bidirectional GPIO with SEG7 (LCD drive), SPI0_SSN, ATIM_CH3N and COMP1_INP1 functions.
30 PB9 bidirectional GPIO with SEG8 (LCD drive), COMP1_INP2, SPI0_SCK and GPT0_ETR functions.
31 PB10 bidirectional GPIO with SEG9 (LCD drive), OPA1_INN1, SPI0_MISO and GPT0_CH1 functions.
32 PB11 bidirectional GPIO with SEG10 (LCD drive), OPA1_INP1, SPI MOSI and GPT0_CH2 functions.
33 PB12 bidirectional GPIO with WKUP3, FOUT1 (clock output), ATIM_ETR and OPA1_OUT1 functions.
34 PB13 bidirectional GPIO with SEG11 (LCD drive), UART1_RX and LPUART1_RX functions.
35 PB14 bidirectional GPIO with SEG12 (LCD drive), UART1_TX and LPUART1_TX functions.
36 PE0 bidirectional GPIO with SEG36 (LCD drive) and SPI0_SSN functions.
37 PE1 bidirectional GPIO with SEG37 (LCD drive) and SPI0_SCK functions.
38 PE2 bidirectional GPIO with SEG38 (LCD drive) and SPI0_MISO functions.
39 PE3 bidirectional GPIO with SEG39 (LCD drive) and SPI0_MOSI functions.
40 PC13 bidirectional GPIO with SEG40 (LCD drive), U7816CLK (7816 clock) and LPT16_CH1 functions.
41 PC14 bidirectional GPIO with SEG41 (LCD drive), U7816IO (7816 data, 100K pull-up) and LPT16_CH2 functions.
42 PC15 bidirectional GPIO with SEG42 (LCD drive), LPT32_CH3 and CAN_RX functions.
43 PE5 bidirectional GPIO with SEG43 (LCD drive), LPT32_CH4 and CAN_TX functions.
44 PB15 bidirectional GPIO with VDISP0 (off-chip LCD capacitor), SCL (I2C clock) and SPI2_MISO functions.
45 PD12 bidirectional GPIO with VDISP1 (off-chip LCD capacitor), SDA (I2C data) and SPI2_MOSI functions.
46 PC0 bidirectional GPIO with VDISP2 (off-chip LCD capacitor), COMP3_INP1, LUT0_OUT and GPT1_CH1 functions.
47 PC1 bidirectional GPIO with VDISP3 (off-chip LCD capacitor), COMP3_INP2, LUT1_OUT and GPT1_CH2 functions.
48 PC2 bidirectional GPIO with XTHIN (high-frequency crystal input), UART1_RX and LPUART1_RX functions.
49 PC3 bidirectional GPIO with XTHOUT (high-frequency crystal output), UART1_TX and LPUART1_TX functions.
50 PC4 bidirectional GPIO with SEG13 (LCD drive), OPA1_OUT2, COMP1_OUT and UART5_RX functions.
51 PC5 bidirectional GPIO with SEG14 (LCD drive), DAC_OUT, COMP2_OUT and UART5_TX functions.
52 PC6 bidirectional GPIO with WKUP4, SEG15 (LCD drive), GPT1_ETR and COMP1_INN2 functions.
53 PC7 bidirectional GPIO with SEG16 (LCD drive), SPI2_SSN and ADC_IN6 functions.
54 PC8 bidirectional GPIO with SEG17 (LCD drive), SPI2_SCK and ADC_IN13 functions.
55 PC9 bidirectional GPIO with SEG18 (LCD drive), SPI2_MISO and ADC_IN14 functions.
56 PC10 bidirectional GPIO with WKUP5, SEG19 (LCD drive), SPI2_MOSI and ADC_IN15 functions.
57 PC11 bidirectional GPIO with SEG20 (LCD drive), U7816CLK, GPT0_CH3 and ADC_IN16 functions.
58 PC12 bidirectional GPIO with SEG21 (LCD drive), U7816IO (10K pull-up), GPT0_CH4 and ADC_IN17 functions.
59 PH15 bidirectional GPIO in the VAO backup domain with RTCOUT (RTCB output) and Tamper (tamper detection input) functions; 5V tolerant with source current not above 1mA.
60 XT32KO output 32768Hz crystal oscillator output.
61 XT32KI input 32768Hz crystal oscillator input.
62 VDD15 power_out LDO output (1.5V core supply) with a 100nF capacitor to ground.
63 VSS power_in Ground (VSS/VSSA).
64 VDD power_in Main power supply (VDD/VDDA), typical operating range 1.65 to 5.5V.
65 VREFN power_in Reference ground.
66 VREFP bidirectional Reference voltage pin for ADC/DAC, external input of 1.6V to VDDA or internal VREFP_VREG output with 1uF capacitor.
67 VBAT power_in Backup supply, 1.5 to 4.2V with power switching or shorted to VDD (up to 5.5V) if unused.
68 PE6 bidirectional GPIO with WKUP9 (wake-up) function.
69 PE7 bidirectional GPIO with COMP3_OUT (comparator output) function.
70 PD11 bidirectional GPIO with WKUP6, FOUT0 (clock output), ATIM_BRK1 (brake input) and ADC_IN0 functions.
71 PD0 bidirectional GPIO with SEG22 (LCD drive), UART5_RX, GPT2_CH1 and ADC_IN7 functions.
72 PD1 bidirectional GPIO with SEG23 (LCD drive), UART5_TX, GPT2_CH2 and ADC_IN1 functions.
73 PD2 bidirectional GPIO with SEG24 (LCD drive), SPI1_SSN, GPT2_CH3 and ADC_IN8 functions.
74 PD3 bidirectional GPIO with SEG25 (LCD drive), SPI1_SCK, GPT2_CH4 and ADC_IN2 functions.
75 PD4 bidirectional GPIO with SEG26 (LCD drive), SPI1_MISO, GPT2_ETR and ADC_IN9 functions.
76 PD5 bidirectional GPIO with SEG27 (LCD drive), SPI1_MOSI, LPT16_ETR and ADC_IN3 functions.
77 PD6 bidirectional GPIO with WKUP7, ANATST (analog test channel), ATIM_BRK2 and ADC_IN10 functions.
78 PD7 bidirectional GPIO with UART3_RX and SWCLK (SWD clock) functions.
79 PD8 bidirectional GPIO with UART3_TX and SWIO (SWD data) functions.
80 NRST input Reset pin.

Key specifications

Parameter Value
Manufacturer FUDAN MICRO
Package LQFP-80(12X12)
Category Single Chip Microcomputer/Microcontroller
Pins 80

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, VDDA) relative to VSS VDD-VSS -0.3 6.5 V 61
Pin voltage VPIN -0.3 6.5 V VSS-0.3 to 6.5 61
ADC reference voltage VREFP-VREFN -0.3 6.5 V 61
Voltage difference between all ground pins /ΔVSS/ 50 mV 61
Operating temperature TA -40 105 ℃ AEC-Q100 grade2 61
Storage temperature TSTG -55 150 ℃ 61
ESD HBM (PC5/DAC_OUT) HBM -2000 2000 V TA=25℃, JEDEC JS-001 61
ESD HBM (all others) HBM -4000 4000 V TA=25℃, JEDEC JS-001 61
ESD CDM CDM -1000 1000 V TA=25℃, JEDEC JS-002 61
IO latchup LU -210 210 mA -(0.5VDD) < VI < (1.5VDD), TA=25℃, JESD78E 61
Max current into VDD (source) ΣIVDD 120 mA 61
Max current out of VSS (sink) ΣIVSS 100 mA 61
Total IO sink current ΣIIO 100 mA all IO sink 61
Total IO source current ΣIIO 120 mA all IO source 61
AHB clock frequency fHCLK 0 64 MHz TA=-40~105C 62
APB clock frequency fPCLK 0 64 MHz TA=-40~105C 62
Operating voltage range VDD 1.65 5.5 V TA=-40~105C 62
Backup supply voltage, without power switching VBAT 1.5 5.5 V Not using power switching function, shorted to VDD 62
Backup supply voltage, with power switching VBAT 1.5 4.2 V Using power switching function, VBAT supplied separately 62
Junction temperature TJ -40 125 °C 62
Run mode current IDDRUN 1.36 1.65 mA fAHB=8MHz (RCHF), PLL off, Flash 0 wait, TA=25℃ 62
Run mode current IDDRUN 1.4 1.7 mA fAHB=8MHz (RCHF), PLL off, Flash 0 wait, TA=105℃ 62
Run mode current IDDRUN 3.15 3.5 mA fAHB=24MHz (RCHF), PLL off, Flash 0 wait, TA=25℃ 62
Run mode current IDDRUN 3.12 3.6 mA fAHB=24MHz (RCHF), PLL off, Flash 0 wait, TA=105℃ 62
Run mode current IDDRUN 5.66 6 mA fAHB=64MHz, PLL on, Flash 1 wait, TA=25℃ 62

CAD (KiCad official)

  • Symbol: FM33LG048A
  • Footprint: Package_QFP:LQFP-80_12x12mm_P0.5mm
  • 3D model: LQFP-80(12X12) (KiCad packages3D, STEP)
  • 3D model files: fm33lg048a-etched.step / fm33lg048a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fm33lg048a.step / fm33lg048a.glb are the bare package body.

Provenance

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

  • Datasheet: FUDAN MICRO datasheet (840 pp, sha256 6af2d099af5b0f40, 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