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N79E815AS28
Public Made by Adomby adom
Nuvoton Tech Microcontrollers (MCU/MPU/SOC), SOIC-28-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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Datasheet
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README
markdownN79E815AS28
Nuvoton Tech · Microcontrollers (MCU/MPU/SOC) · SOIC-28-300mil
N79E815AS28 from Nuvoton Tech, in a SOIC-28-300mil. 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 | P2.0 | bidirectional | Port 2.0 quasi-bidirectional I/O; alternate function IC2 (Timer 2 input-capture pin 2), which has its own Schmitt-trigger input. |
| 2 | P2.1 | bidirectional | Port 2.1 general-purpose quasi-bidirectional I/O (no alternate function listed for this pin). |
| 3 | P0.0 | bidirectional | Port 0.0 quasi-bidirectional I/O; alternate functions PWM3 output, KB0 keyboard interrupt input and SPICLK (SPI-1 clock, selected by AUXR1.7 = 0). |
| 4 | P1.7 | bidirectional | Port 1.7 quasi-bidirectional I/O; alternate functions PWM2 output, MOSI (SPI-1) and ICPCLK (in-circuit programming clock). |
| 5 | P1.6 | bidirectional | Port 1.6 quasi-bidirectional I/O; alternate functions PWM1 output, MISO (SPI-1) and ICPDAT (in-circuit programming data). |
| 6 | RST | input | Active-low Schmitt-trigger reset input with an internal pull-up of about 200 kΩ; the pin must not float and the datasheet recommends a 100 Ω series resistor and 10 µF capacitor to ground. |
| 7 | VSS | power_in | Ground reference for the device (0 V). |
| 8 | P3.1 | bidirectional | Port 3.1 I/O; alternate function XTAL1, the crystal/oscillator input (its digital I/O function is unavailable when an external crystal is used). |
| 9 | P3.0 | bidirectional | Port 3.0 I/O; alternate functions XTAL2 (crystal/oscillator output) and CLKOUT (internal RC OSC/4 clock output enabled by ENCLK). |
| 10 | P1.4 | bidirectional | Port 1.4 I/O with Schmitt-trigger option; alternate functions /INT1 external interrupt 1, STADC (ADC start trigger), and /SS (SPI-1 slave select). |
| 11 | P1.3 | bidirectional | Port 1.3 open-drain only (I2C SDA); alternate function /INT0 external interrupt 0; an external pull-up is required when used as output. |
| 12 | P1.2 | bidirectional | Port 1.2 open-drain only (I2C SCL); alternate functions T0 timer 0 external input, IC0 input-capture pin 0 and T0OE output toggle. |
| 13 | P2.2 | bidirectional | Port 2.2 I/O; alternate function MOSI2, SPI-2 master-out/slave-in (selected by AUXR1.7 = 1). |
| 14 | P2.3 | bidirectional | Port 2.3 I/O; alternate function MISO2, SPI-2 master-in/slave-out (selected by AUXR1.7 = 1). |
| 15 | P2.4 | bidirectional | Port 2.4 I/O; alternate function /SS2, SPI-2 slave select (selected by AUXR1.7 = 1). |
| 16 | P2.5 | bidirectional | Port 2.5 I/O; alternate function SPICLK2, SPI-2 clock (selected by AUXR1.7 = 1). |
| 17 | P1.1 | bidirectional | Port 1.1 I/O; alternate function RXD, the UART receive pin (default UART pin selection; AUXR1.6 = 0). |
| 18 | P1.0 | bidirectional | Port 1.0 I/O; alternate function TXD, the UART transmit pin (default UART pin selection; AUXR1.6 = 0). |
| 19 | P0.7 | bidirectional | Port 0.7 I/O; alternate functions T1 timer 1 external input, ADC6 analog input, KB7 keyboard interrupt input and IC1 input-capture pin 1. |
| 20 | P0.6 | bidirectional | Port 0.6 I/O; alternate functions ADC5 analog input and KB6 keyboard interrupt input. |
| 21 | VDD | power_in | Power supply input; VDD 2.4 V to 5.5 V (3.0 V to 5.5 V for 4-24 MHz external crystal), absolute maximum −0.3 V to +6.5 V to VSS. |
| 22 | P0.5 | bidirectional | Port 0.5 I/O; alternate functions ADC4 analog input and KB5 keyboard interrupt input. |
| 23 | P0.4 | bidirectional | Port 0.4 I/O; alternate functions ADC3 analog input and KB4 keyboard interrupt input. |
| 24 | P0.3 | bidirectional | Port 0.3 I/O; alternate functions ADC2 analog input and KB3 keyboard interrupt input. |
| 25 | P0.2 | bidirectional | Port 0.2 I/O; alternate functions ADC1 analog input, BRAKE PWM clamp/fault input and KB2 keyboard interrupt input. |
| 26 | P0.1 | bidirectional | Port 0.1 I/O; alternate functions PWM0 output, ADC0 analog input and KB1 keyboard interrupt input. |
| 27 | P2.6 | bidirectional | Port 2.6 I/O; alternate functions TXD2 (UART2 transmit, selected by AUXR1.6 = 1) and ADC7 analog input; set AUXR1.3 (DisP26) to disable its digital function when used only as ADC7. |
| 28 | P2.7 | bidirectional | Port 2.7 I/O; alternate function RXD2, the UART2 receive pin (selected by AUXR1.6 = 1). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nuvoton Tech |
| Package | SOIC-28-300mil |
| Category | Embedded Processors & Controllers |
| Pins | 28 |
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 | |||
| Voltage VDD to VSS | -0.3 | 6.5 | V | 166 | |||
| Voltage on other pins to VSS | -0.3 | 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 | |
| ISP operating voltage | VDD | 3 | 5.5 | V | Internal RC 22.1184MHz crystal; Fosc = 4 MHz ~ 24 MHz | 166 | |
| VDD rise rate for reliable internal power-on reset | SVDD | 0.05 | V/ms | 166 | |||
| Input low voltage (standard port, TTL input) | VIL | -0.5 | V | 2.4<VDD<5.5V | 166 | ||
| Input low voltage (standard port, Schmitt input) | VIL1 | -0.5 | V | 2.4<VDD<5.5V | 166 | ||
| Input low voltage (/RST, XTAL1) | VIL2 | -0.5 | V | 2.4<VDD<5.5V | 166 | ||
| Output low voltage (standard port P0, P2, all states except input) | VOL | 0.45 | V | VDD=4.5V, IOL=20 mA | 167 | ||
| Output low voltage (P10, P11, P14, P16, P17, all states except input) | VOL1 | 0.45 | V | VDD=4.5V, IOL=38 mA | 167 | ||
| Output high voltage (standard port, quasi-bidirectional mode) | VOH | 2.4 | V | VDD=4.5V, IOH=-380 μA | 167 | ||
| Output high voltage (standard port, quasi-bidirectional mode) | VOH | 2 | V | VDD=2.4V, IOH=-48 μA | 167 | ||
| Output high voltage (standard port, push-pull mode) | VOH1 | 2.4 | V | VDD=4.5V, IOH=-28.0 mA | 167 | ||
| Output high voltage (standard port, push-pull mode) | VOH1 | 2 | V | VDD=2.4V, IOH=-3.5 mA | 167 | ||
| Logic 0 input current (standard port, quasi-bidirectional mode) | IIL | -50 | -40 | μA | VDD=5.5V, VIN=0.4V | 167 | |
| Logic 1-to-0 transition current (standard port, quasi-bidirectional mode) | ITL | -650 | -550 | μA | VDD=5.5V, VIN=2.0V | 167 | |
| Input leakage current (standard port, open-drain or input mode) | ILI | -10 | 10 | μA | 0 < VIN< VDD <1 | 167 | |
| Power-down mode operating current | IPD | 30 | μA | 168 | |||
| Reset pin internal pull-up resistance | 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 |
| Operating voltage (10-bit SAR-ADC) | VDD | 2.7 | 5.5 | V | 169 | ||
| Integral non-linearity error | INL | -1 | 1 | LSB | 169 | ||
| Differential non-linearity error | DNL | -1 | 1 | LSB | 169 | ||
| Gain error | Ge | -1 | 1 | LSB | 169 | ||
| Offset error | Ofe | -4 | 4 | LSB | 169 | ||
| Absolute error | -4 | 4 | LSB | 169 | |||
| Bandgap reference voltage | VBG | 1 | 1.3 | 1.6 | V | 169 | |
| External crystal input clock frequency | 4 | 24 | MHz | External crystal source | 170 | ||
| Crystal 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 oscillator frequency deviation (22.1184 MHz) | -1 | 1 | % | +25℃ @ VDD=5V | 170 | ||
| Internal RC oscillator frequency deviation (22.1184 MHz) | -3 | 3 | % | +25℃ @ VDD=2.7~5.5V | 170 | ||
| Internal RC oscillator frequency deviation (22.1184 MHz) | -5 | 5 | % | -100C~+700C @ VDD=2.7~5.5V | 170 | ||
| Internal RC oscillator frequency deviation (22.1184 MHz) | -8 | 8 | % | -400C~+850C @ VDD=2.7~5.5V | 170 | ||
| Internal RC oscillator center frequency | 22.1184 | MHz | 170 |
CAD (KiCad official)
- Symbol:
N79E815AS28 - Footprint:
Package_SO:SOIC-28W_7.5x17.9mm_P1.27mm - 3D model: SOIC-28-300mil (KiCad packages3D, STEP)
- 3D model files:
n79e815as28-etched.step/n79e815as28-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);n79e815as28.step/n79e815as28.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 2026-10-17, 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-haiku-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).