ATTINY104-SSNR

@@ -0,0 +1,62 @@+# ATTINY104-SSNR++**Microchip Tech** · Microcontrollers (MCU/MPU/SOC) · SOIC-14++ATTINY104-SSNR from Microchip Tech, in a SOIC-14. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | VCC | power_in | Digital supply voltage. Operating range 1.8-5.5 V (external programming requires 2.7-5.5 V). Decouple locally with a 100 nF ceramic capacitor to GND. |+| 2 | PA0/PCINT0/T0/CLKI/AIN0/ADC0/TPICLK | bidirectional | Port A bit 0. General-purpose bidirectional I/O with individually selectable internal pull-up; symmetrical high sink/source drive. Muxed alternates: external clock input (CLKI), TC0 external clock (T0), analog comparator positive input (AIN0), ADC channel 0, pin-change interrupt PCINT0, and TPI programming clock (TPICLK). |+| 3 | PA1/PCINT1/OC0B/AIN1/ADC1/TPIDATA | bidirectional | Port A bit 1. General-purpose bidirectional I/O with individually selectable internal pull-up; symmetrical high sink/source drive. Muxed alternates: TC0 compare-match B output (OC0B), analog comparator negative input (AIN1), ADC channel 1, pin-change interrupt PCINT1, and TPI programming data (TPIDATA). |+| 4 | PA2/PCINT2/RESET | bidirectional | Port A bit 2, also the external RESET input. A low level longer than the minimum pulse length generates a reset even when the clock is not running (provided the reset function has not been disabled). May alternatively be used as a weak I/O pin or as pin-change interrupt PCINT2. |+| 5 | PA3/PCINT3/OC0A | bidirectional | Port A bit 3. General-purpose bidirectional I/O with individually selectable internal pull-up; symmetrical high sink/source drive. Muxed alternates: TC0 compare-match A output (OC0A, alternate location when T/C Remap is enabled) and pin-change interrupt PCINT3. |+| 6 | PA4/PCINT4/ICP0 | bidirectional | Port A bit 4. General-purpose bidirectional I/O with individually selectable internal pull-up; symmetrical high sink/source drive. Muxed alternates: TC0 input-capture (ICP0, alternate location with T/C Remap) and pin-change interrupt PCINT4. |+| 7 | PA5/PCINT5/OC0B/ADC2 | bidirectional | Port A bit 5. General-purpose bidirectional I/O with individually selectable internal pull-up; symmetrical high sink/source drive. Muxed alternates: ADC channel 2, TC0 compare-match B output (OC0B, alternate location with T/C Remap), and pin-change interrupt PCINT5. |+| 8 | PA6/PCINT6/ADC3 | bidirectional | Port A bit 6. General-purpose bidirectional I/O with individually selectable internal pull-up; symmetrical high sink/source drive. Muxed alternates: ADC channel 3 and pin-change interrupt PCINT6. |+| 9 | PA7/PCINT7 | bidirectional | Port A bit 7. General-purpose bidirectional I/O with individually selectable internal pull-up; symmetrical high sink/source drive. Muxed alternate: pin-change interrupt PCINT7. |+| 10 | PB0/PCINT8/ADC4 | bidirectional | Port B bit 0. General-purpose bidirectional I/O with individually selectable internal pull-up; symmetrical high sink/source drive. Muxed alternates: ADC channel 4 and pin-change interrupt PCINT8. |+| 11 | PB1/PCINT9/INT0/CLKO/XCK0/OC0A/ADC5 | bidirectional | Port B bit 1. General-purpose bidirectional I/O with individually selectable internal pull-up; symmetrical high sink/source drive. Muxed alternates: external interrupt INT0, system clock output CLKO, USART0 external clock XCK0, TC0 compare-match A output (OC0A, primary location), ADC channel 5, and pin-change interrupt PCINT9. |+| 12 | PB2/PCINT10/ICP0/TxD0/ADC6 | bidirectional | Port B bit 2. General-purpose bidirectional I/O with individually selectable internal pull-up; symmetrical high sink/source drive. Muxed alternates: TC0 input-capture (ICP0, primary location), USART0 transmit data (TxD0), ADC channel 6, and pin-change interrupt PCINT10. |+| 13 | PB3/PCINT11/T0/RxD0/ACO/ADC7 | bidirectional | Port B bit 3. General-purpose bidirectional I/O with individually selectable internal pull-up; symmetrical high sink/source drive. Muxed alternates: TC0 external clock (T0, alternate location with T/C Remap), USART0 receive data (RxD0), analog comparator output (ACO), ADC channel 7, and pin-change interrupt PCINT11. |+| 14 | GND | power_in | Ground reference for the digital supply and all I/O. Connect directly to the system ground plane. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Microchip Tech |+| Package | SOIC-14 |+| Category | Embedded Processors & Controllers |+| Pins | 14 |++## Ordering variants++Same part, different packaging or reel option.++- `ATTINY104-SSNR`+- `ATTINY104-SSNRSSFR`+- `ATTINY104-SSNRF-SSNR`+- `ATTINY104-SSNRF-SSFR`+- `ATTINY104-SSNRM7R`+- `ATTINY104-SSNRM8R`+- `ATTINY104-SSNRF-M7R`+- `ATTINY104-SSNRF-M8R`++## CAD (KiCad official)++- Symbol: `ATTINY104-SSNR`+- Footprint: `Package_SO:SOIC-14_3.9x8.7mm_P1.27mm`+- 3D model: SOIC-14 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Microchip Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589914782490406912) (None pp, sha256 `53bde81c2835d14d`, retrieved 2026-08-17, tier: lcsc)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/attiny104-ssnr-datasheet.pdf)

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