PIC12F1822-I from Microchip, in a SOIC-8. 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	VDD	power_in	Positive supply voltage. 1.8-5.5V for PIC12F1822; 1.8-3.6V for PIC12LF1822. Decouple to VSS with 0.1 uF ceramic.
2	RA5/T1CKI/T1OSI/CCP1/P1A/RX/DT/CLKIN/OSC1	bidirectional	General-purpose I/O RA5. Alternate functions: Timer1 clock input (T1CKI), Timer1 oscillator input (T1OSI), ECCP CCP1/P1A output, EUSART RX/DT, external clock/oscillator input (CLKIN/OSC1). Interrupt-on-change capable, weak pull-up available.
3	RA4/AN3/CPS3/C1IN1-/T1G/T1OSO/P1B/TX/CK/SDO/CLKOUT/CLKR/MDCIN2/OSC2	bidirectional	General-purpose I/O RA4. Alternate functions: ADC channel AN3, capacitive-sense CPS3, comparator C1 input C1IN1-, Timer1 gate (T1G) / Timer1 oscillator output (T1OSO), ECCP P1B, EUSART TX/CK, MSSP SDO, oscillator output (CLKOUT/OSC2) and reference clock output (CLKR), DSM carrier input MDCIN2. IOC capable, weak pull-up available.
4	RA3/MCLR/VPP/T1G/SS	input	Multiplexed input-only pin. Functions as active-low Master Clear Reset (MCLR) with programming high-voltage entry (VPP ~9V) when MCLRE is enabled, otherwise a digital input RA3. Alternate functions: Timer1 gate (T1G) and MSSP slave select (SS). IOC and weak pull-up available.
5	RA2/AN2/CPS2/C1OUT/SRQ/T0CKI/CCP1/P1A/FLT0/SDA/SDI/INT/MDCIN1	bidirectional	General-purpose I/O RA2. Alternate functions: ADC channel AN2, capacitive-sense CPS2, comparator C1 output C1OUT, SR latch Q output (SRQ), Timer0 external clock (T0CKI), ECCP CCP1/P1A/FLT0, MSSP I2C data (SDA) or SPI data-in (SDI), external interrupt (INT), DSM carrier input MDCIN1. IOC capable, weak pull-up available.
6	RA1/AN1/VREF+/CPS1/C1IN0-/SRI/SCL/SCK/ICSPCLK/MDMIN	bidirectional	General-purpose I/O RA1. Alternate functions: ADC channel AN1, external ADC/DAC positive reference (VREF+), capacitive-sense CPS1, comparator C1 input C1IN0-, SR latch S input (SRI), MSSP I2C clock (SCL) / SPI clock (SCK), DSM modulator input (MDMIN), and ICSP programming clock (ICSPCLK). IOC capable, weak pull-up available.
7	RA0/AN0/DACOUT/CPS0/C1IN+/P1B/TX/CK/SDO/SS/ICSPDAT/MDOUT	bidirectional	General-purpose I/O RA0. Alternate functions: ADC channel AN0, DAC analog output (DACOUT), capacitive-sense CPS0, comparator C1 input C1IN+, ECCP P1B, EUSART TX/CK, MSSP SPI data-out (SDO) or slave-select (SS), DSM modulator output (MDOUT), and ICSP programming data (ICSPDAT). IOC capable, weak pull-up available.
8	VSS	power_in	Ground reference (0 V) for logic and analog supplies.

Key specifications

Parameter	Value
Manufacturer	Microchip
Package	SOIC-8
Category	MCU
Pins	8

Ordering variants

Same part, different packaging or reel option.

PIC12F1822-II/P
PIC12F1822-II/SN
PIC12F1822-II/MF

CAD (KiCad official)

Symbol: PIC12F1822-I
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Microchip datasheet (436 pp, sha256 385ebb8519f3657b, retrieved 2026-08-17, tier: manufacturer)
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: 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