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ATSAMC21E16A-ANT
Public Made by Adomby adom
Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-32(7x7). 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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Contents
README
markdownATSAMC21E16A-ANT
Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · TQFP-32(7x7)
ATSAMC21E16A-ANT from Microchip Tech, in a TQFP-32(7x7). 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 | PA00 | bidirectional | PORT group A I/O pin also usable as EXTINT[0], SERCOM1 PAD[0], TCC2 WO[0], CMP[2], and XIN32 crystal input for the 32.768 kHz oscillator. |
| 2 | PA01 | bidirectional | PORT group A I/O pin also usable as EXTINT[1], SERCOM1 PAD[1], TCC2 WO[1], CMP[3], and XOUT32 crystal output for the 32.768 kHz oscillator. |
| 3 | PA02 | bidirectional | Analog-capable I/O pin with AIN[0], AIN[4], touch input Y[0], and the DAC output VOUT, supplied from VDDANA. |
| 4 | PA03 | bidirectional | Analog-capable I/O pin with AIN[1], AIN[5], touch input Y[1], and the ADC/DAC external reference VREFA. |
| 5 | PA04 | bidirectional | I/O pin with AIN[4] and AIN[0], touch input Y[2], SERCOM0 PAD[0], TCC0 WO[0], and the SDADC external reference VREFB. |
| 6 | PA05 | bidirectional | I/O pin with AIN[5] and AIN[1], touch input Y[3], SERCOM0 PAD[1], and TCC0 WO[1]. |
| 7 | PA06 | bidirectional | I/O pin with AIN[6], AIN[2], AINN[0], touch input Y[4], SERCOM0 PAD[2], and TCC1 WO[0]. |
| 8 | PA07 | bidirectional | I/O pin with AIN[7], AIN[3], AINP[0], touch input Y[5], SERCOM0 PAD[3], and TCC1 WO[1]. |
| 9 | VDDANA | power_in | Analog supply pin for the ADC, DAC, analog comparators, and other analog blocks. |
| 10 | GND | power_in | Ground pin for the device. |
| 11 | PA08 | bidirectional | I/O pin also usable as NMI, AIN[8], touch input X[0]/Y[16], SERCOM0 PAD[0], SERCOM2 PAD[0] (I2C-capable), TCC0 WO[0], and CCL1 IN[3]. |
| 12 | PA09 | bidirectional | I/O pin also usable as EXTINT[9], AIN[9], touch input X[1]/Y[17], SERCOM0 PAD[1], SERCOM2 PAD[1] (I2C-capable), and TCC0 WO[1]. |
| 13 | PA10 | bidirectional | I/O pin also usable as EXTINT[10], AIN[10], touch input X[2]/Y[18], SERCOM0 PAD[2], SERCOM2 PAD[2], TCC1 WO[0], TCC0 WO[2], and GCLK_IO[4]. |
| 14 | PA11 | bidirectional | I/O pin also usable as EXTINT[11], AIN[11], touch input X[3]/Y[19], SERCOM0 PAD[3], SERCOM2 PAD[3], TCC1 WO[1], TCC0 WO[3], and GCLK_IO[5]. |
| 15 | PA14 | bidirectional | I/O pin also usable as EXTINT[14], SERCOM2 PAD[2], SERCOM4 PAD[2], TC4 WO[0], TCC0 WO[4], GCLK_IO[0], and XOSC crystal input XIN. |
| 16 | PA15 | bidirectional | I/O pin also usable as EXTINT[15], SERCOM2 PAD[3], SERCOM4 PAD[3], TC4 WO[1], TCC0 WO[5], GCLK_IO[1], and XOSC crystal output XOUT. |
| 17 | PA16 | bidirectional | I/O pin also usable as EXTINT[0], touch input X[4]/Y[20], SERCOM1 PAD[0], SERCOM3 PAD[0], TCC2 WO[0], TCC0 WO[6], GCLK_IO[2], and CCL0 IN[0]. |
| 18 | PA17 | bidirectional | I/O pin also usable as EXTINT[1], touch input X[5]/Y[21], SERCOM1 PAD[1], SERCOM3 PAD[1], TCC2 WO[1], TCC0 WO[7], and GCLK_IO[3]. |
| 19 | PA18 | bidirectional | I/O pin also usable as EXTINT[2], touch input X[6]/Y[22], SERCOM1 PAD[2], SERCOM3 PAD[2], TC4 WO[0], TCC0 WO[2], and AC/CMP[0]. |
| 20 | PA19 | bidirectional | I/O pin also usable as EXTINT[3], touch input X[7]/Y[23], SERCOM1 PAD[3], SERCOM3 PAD[3], TC4 WO[1], TCC0 WO[3], and AC/CMP[1]. |
| 21 | PA22 | bidirectional | I/O pin also usable as EXTINT[6], touch input X[10]/Y[26], SERCOM3 PAD[0], SERCOM5 PAD[0], TC0 WO[0], TCC0 WO[4], GCLK_IO[6], and CCL2 IN[6] (I2C-capable). |
| 22 | PA23 | bidirectional | I/O pin also usable as EXTINT[7], touch input X[11]/Y[27], SERCOM3 PAD[1], SERCOM5 PAD[1], TC0 WO[1], TCC0 WO[5], and GCLK_IO[7] (I2C-capable). |
| 23 | PA24 | bidirectional | I/O pin also usable as EXTINT[12], SERCOM3 PAD[2], SERCOM5 PAD[2], TC1 WO[0], TCC1 WO[2], CAN0 TX, and AC/CMP[2]. |
| 24 | PA25 | bidirectional | I/O pin also usable as EXTINT[13], SERCOM3 PAD[3], SERCOM5 PAD[3], TC1 WO[1], TCC1 WO[3], CAN0 RX, and AC/CMP[3]. |
| 25 | PA27 | bidirectional | I/O pin in the VDDIN power domain, also usable as EXTINT[15] and GCLK_IO[0]. |
| 26 | RESET | input | Active-low external reset input pin of the device. |
| 27 | PA28 | bidirectional | I/O pin in the VDDIN power domain, also usable as EXTINT[8] and GCLK_IO[0]. |
| 28 | GND | power_in | Ground pin for the device. |
| 29 | VDDCORE | power_out | Regulated output of the internal voltage regulator supplying the device core. |
| 30 | VDDIN | power_in | Input supply to the internal voltage regulator and the VDDIN-domain I/O pins. |
| 31 | PA30 | bidirectional | I/O pin in the VDDIN domain that serves as the Serial Wire Debug clock SWCLK, also usable as EXTINT[10], SERCOM1 PAD[2], TCC1 WO[0], GCLK_IO[0], and CCL1 IN[3]. |
| 32 | PA31 | bidirectional | I/O pin in the VDDIN domain that serves as the Serial Wire Debug data pin SWDIO, also usable as EXTINT[11], SERCOM1 PAD[3], TCC1 WO[1], and CCL1 OUT[1]. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | TQFP-32(7x7) |
| Category | Single Chip Microcomputer/Microcontroller |
| Pins | 32 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VDDIO supply voltage | VDDIO | 2.7 | 5.5 | V | Powers I/O lines and XOSC | 38 | |
| VDDIN supply voltage | VDDIN | 2.7 | 5.5 | V | Powers I/O lines, OSC48M, TOSC and internal regulator | 38 | |
| VDDANA supply voltage | VDDANA | 2.7 | 5.5 | V | Powers I/O lines, ADC, AC, DAC, PTC, SDADC, OSCULP32K, OSC32K and XOSC32K | 38 | |
| VDDCORE internal regulated voltage | VDDCORE | 1.2 | V | Internal regulated voltage output powering the core, memories, peripherals and FDPLL96M | 38 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | PC | 10.3. Micro Trace Buffer MTB base address corrected from 0x41006000 to 0x41008000. 22. SUPC, Supply Controller 22.6.3.3. VDD Brown-Out Detector (BODVDD): Removed | 1198 | |
| contacts | tin | including indium tin oxide (ITO) sensor grids. The PTC requires one pin per X-line and one pin per Y-line. In the Self Capacitance mode, the PTC requires only one pin (Y-line) for each touch sensor. | 987 |
CAD (KiCad official)
- Symbol:
ATSAMC21E16A-ANT - Footprint:
Package_QFP:TQFP-32_7x7mm_P0.8mm - 3D model: TQFP-32(7x7) (KiCad packages3D, STEP)
- 3D model files:
atsamc21e16a-ant-etched.step/atsamc21e16a-ant-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);atsamc21e16a-ant.step/atsamc21e16a-ant.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (1206 pp, sha256
5991eaad10c5cd35, retrieved 2026-10-30, tier: manufacturer) - 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).