component
N79E815AT20
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Nuvoton Tech Microcontroller Units (MCUs/MPUs/SOCs), TSSOP-20. 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
markdownN79E815AT20
Nuvoton Tech · Microcontroller Units (MCUs/MPUs/SOCs) · TSSOP-20
N79E815AT20 from Nuvoton Tech, in a TSSOP-20. 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 | P0.0 | bidirectional | Port 0 bit 0 I/O with alternate functions PWM3 output, KB0 keyboard input and SPICLK (SPI-1 clock). |
| 2 | P1.7 | bidirectional | Port 1 bit 7 I/O with alternate functions PWM2 output, ICPCLK (ICP clock) and MOSI (SPI-1); 38 mA LED drive capability. |
| 3 | P1.6 | bidirectional | Port 1 bit 6 I/O with alternate functions PWM1 output, ICPDAT (ICP data) and MISO (SPI-1); 38 mA LED drive capability. |
| 4 | /RST | input | Active-low Schmitt-trigger reset input with about 200 kohm internal pull-up; must not float, datasheet requires a 100 ohm resistor and 10 uF capacitor to ground. |
| 5 | VSS | power_in | Ground. |
| 6 | P3.1 | bidirectional | Port 3 bit 1 I/O, alternate function XTAL1 external crystal/clock input. |
| 7 | P3.0 | bidirectional | Port 3 bit 0 I/O, alternate functions XTAL2 (crystal amplifier output) and CLKOUT (internal RC oscillator/4 output). |
| 8 | P1.4 | bidirectional | Port 1 bit 4 I/O with alternate functions /INT1 external interrupt, STADC ADC start trigger and /SS (SPI-1 slave select); 38 mA LED drive capability. |
| 9 | P1.3 | bidirectional | Port 1 bit 3, always open-drain, with alternate functions /INT0 external interrupt and SDA (I2C data). |
| 10 | P1.2 | bidirectional | Port 1 bit 2, always open-drain, with alternate functions T0 timer 0 external input, SCL (I2C clock) and IC0 capture input. |
| 11 | P1.1 | bidirectional | Port 1 bit 1 I/O with alternate function RXD (UART receive); 38 mA LED drive capability. |
| 12 | P1.0 | bidirectional | Port 1 bit 0 I/O with alternate function TXD (UART transmit); 38 mA LED drive capability. |
| 13 | P0.7 | bidirectional | Port 0 bit 7 I/O with alternate functions T1 timer 1 external input, ADC6 analog input, KB7 keyboard input and IC1 capture input. |
| 14 | P0.6 | bidirectional | Port 0 bit 6 I/O with alternate functions ADC5 analog input and KB6 keyboard input. |
| 15 | VDD | power_in | Supply voltage input; operating range 2.4 V to 5.5 V depending on clock source and frequency. |
| 16 | P0.5 | bidirectional | Port 0 bit 5 I/O with alternate functions ADC4 analog input and KB5 keyboard input. |
| 17 | P0.4 | bidirectional | Port 0 bit 4 I/O with alternate functions ADC3 analog input and KB4 keyboard input. |
| 18 | P0.3 | bidirectional | Port 0 bit 3 I/O with alternate functions ADC2 analog input and KB3 keyboard input. |
| 19 | P0.2 | bidirectional | Port 0 bit 2 I/O with alternate functions BRAKE (PWM brake input), ADC1 analog input and KB2 keyboard input. |
| 20 | P0.1 | bidirectional | Port 0 bit 1 I/O with alternate functions PWM0 output, ADC0 analog input and KB1 keyboard input. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nuvoton Tech |
| Package | TSSOP-20 |
| Category | Embedded Processors & Controllers |
| Pins | 20 |
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 temperature | -40 | 85 | C | 166 | |||
| Storage temperature | -55 | 150 | C | 166 | |||
| VDD to VSS voltage | -0.3 | 6.5 | V | 166 | |||
| Operating voltage | VDD | 3 | 5.5 | V | Fosc = 4 MHz ~ 24 MHz | 166 | |
| Operating voltage | VDD | 2.4 | 5.5 | V | Fosc = 4 MHz ~12 MHz | 166 | |
| Input low voltage (TTL) | VIL | -0.5 | V | 2.4< VDD< 5.5V; max printed 0.2VDD-0.1 | 166 | ||
| Input low voltage (Schmitt) | VIL1 | -0.5 | V | 2.4< VDD< 5.5V; max printed 0.3VDD | 166 | ||
| Input low voltage (/RST, XTAL1) | VIL2 | -0.5 | V | 2.4< VDD< 5.5V; max printed 0.2VDD-0.1 | 166 | ||
| Output low voltage P0,P2 | VOL | 0.45 | V | VDD=4.5V, IOL=20 mA | 167 | ||
| Output low voltage P10,P11,P14,P16,P17 | VOL1 | 0.45 | V | VDD=4.5V, IOL=38 mA | 167 | ||
| Output high voltage quasi-bidirectional | VOH | 2.4 | V | VDD=4.5V, IOH=-380 μA | 167 | ||
| Output high voltage quasi-bidirectional | VOH | 2 | V | VDD=2.4V, IOH=-48 μA | 167 | ||
| Output high voltage push-pull | VOH1 | 2.4 | V | VDD=4.5V, IOH=-28.0 mA | 167 | ||
| Output high voltage push-pull | VOH1 | 2 | V | VDD=2.4V, IOH=-3.5 mA | 167 | ||
| Input leakage current | ILI | -10 | 10 | μA | open-drain or input mode, 0 < VIN < VDD | 167 | |
| Power-down current | IPD | 5 | 30 | μA | Power-down mode | 168 | |
| Power-down current, BOD on | IPD | 100 | μA | Power-down mode (BOD module on) | 168 | ||
| Reset pin internal pull-up resistor | RRST | 100 | 250 | KΩ | 2.4< VDD< 5.5V | 168 | |
| BOD38 detection voltage | VBOD38 | 3.5 | 3.8 | 4.1 | V | Temperature=25℃ | 168 |
| BOD38 detection voltage | VBOD38 | 3.5 | 3.8 | 4.9 | V | Temperature=85℃ | 168 |
| BOD38 detection voltage | VBOD38 | 3 | 3.8 | 4.1 | V | Temperature=-40℃ | 168 |
| BOD27 detection voltage | VBOD27 | 2.5 | 2.7 | 2.9 | V | Temperature=25℃ | 168 |
| BOD27 detection voltage | VBOD27 | 2.5 | 2.7 | 3.1 | V | Temperature=85℃ | 168 |
| BOD27 detection voltage | VBOD27 | 2.4 | 2.7 | 2.9 | V | Temperature=-40℃ | 168 |
| ADC operating voltage | VDD | 2.7 | 5.5 | V | 10-bit SAR-ADC | 169 | |
| ADC integral nonlinearity | INL | -1 | 1 | LSB | 169 | ||
| ADC differential nonlinearity | DNL | -1 | 1 | LSB | 169 | ||
| ADC gain error | Ge | -1 | 1 | LSB | 169 | ||
| ADC offset error | Ofe | -4 | 4 | LSB | 169 | ||
| ADC absolute error | -4 | 4 | LSB | 169 | |||
| Bandgap reference voltage | VBG | 1 | 1.3 | 1.6 | V | 169 | |
| External crystal clock input frequency | 1/tCLCL | 0 | 24 | MHz | 170 | ||
| Clock high time | tCHCX | 20.8 | Ns | 170 | |||
| Clock low time | tCLCX | 20.8 | Ns | 170 | |||
| Clock rise time | tCLCH | 10 | Ns | 170 | |||
| Clock fall time | tCHCL | 10 | Ns | 170 | |||
| Internal RC frequency deviation | -1 | 1 | % | +25°C @ VDD=5V | 170 | ||
| Internal RC frequency deviation | -3 | 3 | % | +25°C @ VDD=2.7~5.5V | 170 | ||
| Internal RC frequency deviation | -5 | 5 | % | -10°C~+70°C @ VDD=2.7~5.5V | 170 | ||
| Internal RC frequency deviation | -8 | 8 | % | -40°C~+85°C @ VDD=2.7~5.5V | 170 | ||
| Operating current | IOP | 3.1 | mA | XTAL 12MHz, VDD=5.0V | 167 | ||
| Operating current | IOP | 4.3 | mA | XTAL 24MHz, VDD=5.5V | 167 |
CAD (KiCad official)
- Symbol:
N79E815AT20 - Footprint:
Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm - 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files:
n79e815at20-etched.step/n79e815at20-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);n79e815at20.step/n79e815at20.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nuvoton Tech datasheet (179 pp, sha256
d6a503318845ce88, retrieved 2026-10-26, 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).