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FU5821T

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Fortior Tech Microcontroller Units (MCUs/MPUs/SOCs), TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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FU5821T

Fortior Tech · Microcontroller Units (MCUs/MPUs/SOCs) · TSSOP-16

FU5821T from Fortior Tech, in a TSSOP-16. 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 P0.1/TIM4/SDA/TXD bidirectional GPIO with configurable INT0 input and open-drain output, also Timer4 I/O, I2C SDA (can be open-drain) and UART TXD open-drain output.
2 H_PU output 2P2N-mode pre-driver high-side U-phase output with built-in 50kΩ pull-up resistor.
3 H_PV output 2P2N-mode pre-driver high-side V-phase output with built-in 50kΩ pull-up resistor.
4 L_U output 2P2N-mode pre-driver low-side U-phase output with built-in 25kΩ pull-down resistor.
5 L_V output 2P2N-mode pre-driver low-side V-phase output with built-in 25kΩ pull-down resistor.
6 VCC power_in Power supply input, requires an external filter capacitor of 2.2μF or larger.
7 VSS power_in Ground.
8 VDD5 power_in Medium-voltage supply input or internal 5V LDO output supply, with an external 1 to 4.7μF capacitor.
9 RSTN/FICEK input External reset input (chip resets when low for more than 50μs) and FICE clock pin.
10 P1.2/TIM4S/TIM2/TXDS/FICED bidirectional GPIO with configurable INT0/INT1 input, also remapped Timer4 I/O, Timer2 I/O, remapped UART TXD output and FICE data pin.
11 P1.6/C0M/AD5 bidirectional GPIO with configurable INT1 input, CMP0 negative input and ADC channel 5 input.
12 P0.4/TIM2S/C0P/AD6 bidirectional GPIO with configurable INT0/INT1 input, remapped Timer2 I/O, CMP0 positive input and ADC channel 6 input.
13 P0.6/ISEN/AD0 input Input port P0.6, bus current sense input and ADC channel 0 input.
14 P0.2/HALP/AD2 bidirectional GPIO used for Hall logic-level input, differential Hall positive input and ADC channel 2 input.
15 P0.3/HALM/AD3 bidirectional GPIO, differential Hall negative input and ADC channel 3 input.
16 P1.1/TIM3/SCL/RXD/AD7 bidirectional GPIO with configurable INT0/INT1 input and configurable pull-up/pull-down, Timer3 I/O, I2C SCL (can be open-drain), UART RXD input (or TXD output/RXD input in single-wire mode) and ADC channel 7 input.

Key specifications

Parameter Value
Manufacturer Fortior Tech
Package TSSOP-16
Category Single Chip Microcomputer/Microcontroller
Pins 16

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Operating ambient temperature (VCC ≤ 28V) TA -40 85 ℃ VCC ≤ 28V 29
Operating ambient temperature (VCC < 15V) TA -40 105 ℃ VCC < 15V 29
Operating junction temperature TJ -40 150 ℃ 29
Storage temperature -55 150 ℃ 29
VCC voltage relative to VSS VCC -0.3 40 V 29
VDD5 voltage relative to VSS VDD5 -0.3 6.5 V 29
VCC operating voltage VCC 5 28 V Single supply high-voltage mode, TA = 25℃ 29
VDD5 operating voltage VDD5 5.5 V VCC connected to VDD5 29
System clock 24 MHz 29
IVCC operating current IVCC 12 mA 29
IVCC standby current IVCC 1.5 mA 29
IVCC sleep current IVCC 100 μA 29
GPIO output rise time 15 ns 50pF load, 10% to 90%, TA = 25℃ 30
GPIO output fall time 13 ns 50pF load, 90% to 10%, TA = 25℃ 30
GPIO output low voltage VOL 0.7 V IOL = 8mA 30
GPIO pull-up resistance (other GPIO) 35 kΩ GPIO except P0[3:1] 30
GPIO pull-up resistance P0[3:2] 6 kΩ P0[3:2] 30
GPIO pull-down resistance P1[1] 15 kΩ P1[1] 30
Internal fast clock frequency 23.5 24 24.5 MHz TA = -40℃ ~ 85℃, VCC = 5V ~ 28V 31
WDT clock frequency 29 32.8 37 kHz TA = -40℃ ~ 85℃, VCC = 5V ~ 28V 31
RSTN reset low-level minimum time 50 μs TA = 25℃, VCC = 5V ~ 28V 31
VDD5 LDO voltage VDD5 4.7 5 5.3 V VCC = 7V ~ 28V 31
Thermal resistance junction to ambient θJA 139 ℃/W JEDEC standard, 2S2P PCB 31
Thermal resistance junction to case θJC 43 ℃/W JEDEC standard, 1S0P PCB 31

CAD (KiCad official)

  • Symbol: FU5821T
  • Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
  • 3D model: TSSOP-16 (KiCad packages3D, STEP)
  • 3D model files: fu5821t-etched.step / fu5821t-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fu5821t.step / fu5821t.glb are the bare package body.

Provenance

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

  • Datasheet: Fortior Tech datasheet (157 pp, sha256 baf47c2e26fc12de, retrieved 2026-10-23, 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