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ATTINY48-AU
Public Made by Adomby adom
Microchip Tech ATMEL & AVR, 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
markdownATTINY48-AU
Microchip Tech · ATMEL & AVR · TQFP-32(7x7)
ATTINY48-AU 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 | PD3/INT1/PCINT19 | bidirectional | Port D bit 3 is a bidirectional I/O with internal pull-up and high sink capability, with alternate functions INT1 and PCINT19. |
| 2 | PD4/T0/PCINT20 | bidirectional | Port D bit 4 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, with alternate functions T0 and PCINT20. |
| 3 | PA2/PCINT26 | bidirectional | Port A bit 2 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, available only in 32-pin packages, with alternate function PCINT26. |
| 4 | VCC | power_in | Digital supply voltage. |
| 5 | GND | power_in | Ground. |
| 6 | PA3/PCINT27 | bidirectional | Port A bit 3 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, available only in 32-pin packages, with alternate function PCINT27. |
| 7 | PB6/CLKI/PCINT6 | bidirectional | Port B bit 6 is a bidirectional I/O with internal pull-up that can be used as input to the internal clock operating circuit depending on the clock selection fuse settings, with alternate function PCINT6. |
| 8 | PB7/PCINT7 | bidirectional | Port B bit 7 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, with alternate function PCINT7. |
| 9 | PD5/T1/PCINT21 | bidirectional | Port D bit 5 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, with alternate functions T1 and PCINT21. |
| 10 | PD6/AIN0/PCINT22 | bidirectional | Port D bit 6 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, with alternate functions AIN0 and PCINT22. |
| 11 | PD7/AIN1/PCINT23 | bidirectional | Port D bit 7 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, with alternate functions AIN1 and PCINT23. |
| 12 | PB0/CLKO/ICP1/PCINT0 | bidirectional | Port B bit 0 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, with alternate functions CLKO, ICP1 and PCINT0. |
| 13 | PB1/OC1A/PCINT1 | bidirectional | Port B bit 1 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, with alternate functions OC1A and PCINT1. |
| 14 | PB2/SS/OC1B/PCINT2 | bidirectional | Port B bit 2 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, with alternate functions SS, OC1B and PCINT2. |
| 15 | PB3/MOSI/PCINT3 | bidirectional | Port B bit 3 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, with alternate functions MOSI and PCINT3. |
| 16 | PB4/MISO/PCINT4 | bidirectional | Port B bit 4 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, with alternate functions MISO and PCINT4. |
| 17 | PB5/SCK/PCINT5 | bidirectional | Port B bit 5 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, with alternate functions SCK and PCINT5. |
| 18 | AVCC | power_in | Supply voltage for the A/D converter and for PC7, PC[5:0] and PA[1:0], to be externally connected to VCC even if the ADC is not used, preferably through a low-pass filter when the ADC is used. |
| 19 | PA0/ADC6/PCINT24 | bidirectional | Port A bit 0 is a bidirectional I/O with internal pull-up, supplied from AVCC, available only in 32-pin packages, with alternate functions ADC6 and PCINT24. |
| 20 | PC7/PCINT15 | bidirectional | Port C bit 7 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, supplied from AVCC, with alternate function PCINT15. |
| 21 | GND | power_in | Ground. |
| 22 | PA1/ADC7/PCINT25 | bidirectional | Port A bit 1 is a bidirectional I/O with internal pull-up, supplied from AVCC, available only in 32-pin packages, with alternate functions ADC7 and PCINT25. |
| 23 | PC0/ADC0/PCINT8 | bidirectional | Port C bit 0 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, supplied from AVCC, with alternate functions ADC0 and PCINT8. |
| 24 | PC1/ADC1/PCINT9 | bidirectional | Port C bit 1 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, supplied from AVCC, with alternate functions ADC1 and PCINT9. |
| 25 | PC2/ADC2/PCINT10 | bidirectional | Port C bit 2 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, supplied from AVCC, with alternate functions ADC2 and PCINT10. |
| 26 | PC3/ADC3/PCINT11 | bidirectional | Port C bit 3 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, supplied from AVCC, with alternate functions ADC3 and PCINT11. |
| 27 | PC4/ADC4/SDA/PCINT12 | bidirectional | Port C bit 4 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, supplied from AVCC, with alternate functions ADC4, SDA and PCINT12. |
| 28 | PC5/ADC5/SCL/PCINT13 | bidirectional | Port C bit 5 is a bidirectional I/O with internal pull-up and symmetrical sink/source drive, supplied from AVCC, with alternate functions ADC5, SCL and PCINT13. |
| 29 | PC6/RESET/PCINT14 | bidirectional | Acts as reset input when the RSTDISBL fuse is unprogrammed, where a low level longer than the minimum pulse width generates a reset, and as an I/O pin when the fuse is programmed, with electrical characteristics differing from other Port C pins. |
| 30 | PD0/PCINT16 | bidirectional | Port D bit 0 is a bidirectional I/O with internal pull-up and high sink capability, with alternate function PCINT16. |
| 31 | PD1/PCINT17 | bidirectional | Port D bit 1 is a bidirectional I/O with internal pull-up and high sink capability, with alternate function PCINT17. |
| 32 | PD2/INT0/PCINT18 | bidirectional | Port D bit 2 is a bidirectional I/O with internal pull-up and high sink capability, with alternate functions INT0 and PCINT18. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | TQFP-32(7x7) |
| Category | Embedded Processors & Controllers |
| 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 |
|---|---|---|---|---|---|---|---|
| Operating voltage | 1.8 | 5.5 | V | Operating voltage, Features list | 1 | ||
| Temperature range | -40 | 85 | °C | Industrial range | 1 | ||
| Speed grade | 0 | 4 | MHz | @ 1.8, 5.5V | 1 | ||
| Speed grade | 0 | 8 | MHz | @ 2.7, 5.5V | 1 | ||
| Speed grade | 0 | 12 | MHz | @ 4.5, 5.5V | 1 |
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 |
|---|---|---|---|---|
| contacts | tin | , H: NiPdAu lead finish, U: matte tin | 14 |
CAD (KiCad official)
- Symbol:
ATTINY48-AU - Footprint:
Package_QFP:TQFP-32_7x7mm_P0.8mm - 3D model: TQFP-32(7x7) (KiCad packages3D, STEP)
- 3D model files:
attiny48-au-etched.step/attiny48-au-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);attiny48-au.step/attiny48-au.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (26 pp, sha256
c7d2ab2d8f58a090, retrieved 2026-10-27, tier: lcsc) - 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).