FT61FC22A-RB from FMD Fremont Micro Devices, 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	VDD	power_in	Positive supply, 2.0 V to 5.5 V (VPOR ≤ 2.0 V). Decouple with 100 nF close to the pin.
2	PA7/OSC1/CLKI/T1CKI	bidirectional	General-purpose I/O bit 7 with configurable pull-up/pull-down. Alternate functions: LP/XT crystal input (OSC1), external clock input (CLKI, EC mode), and Timer1 external clock input (T1CKI). PORTA change-interrupt capable.
3	PA6/OSC2/CLKO/T1G	bidirectional	General-purpose I/O bit 6 with pull-up/pull-down. Alternate functions: LP/XT crystal output (OSC2), system clock output (CLKO), and Timer1 gate input (T1G).
4	PA4/VREGP/ATEST0	bidirectional	General-purpose I/O bit 4. Alternate functions: high-voltage regulator output (VREGP, 32-step programmable output from the on-chip VREG) and analog test output (ATEST0).
5	PC3/P1C/PWM4	bidirectional	General-purpose I/O bit PC3 with pull-up/pull-down. Alternate functions: ECCP enhanced PWM output P1C (half/full-bridge leg) and independent PWM4 output.
6	PC2/AN6/P1D/PWM5	bidirectional	General-purpose I/O bit PC2. Alternate functions: ADC channel AN6 analog input, ECCP enhanced PWM output P1D, and independent PWM5 output.
7	PC4/P1B/PWM3/C2OUT	bidirectional	General-purpose I/O bit PC4. Alternate functions: ECCP enhanced PWM output P1B, independent PWM3 output, and analog comparator 2 output (C2OUT).
8	PC1/AN5/C2IN-/P1E/INT	bidirectional	General-purpose I/O bit PC1. Alternate functions: ADC channel AN5, comparator 2 inverting input (C2IN-), ECCP enhanced PWM output P1E, and external edge-triggered interrupt input (INT).
9	PC0/AN4/C2IN+/P1F/VREF	bidirectional	General-purpose I/O bit PC0. Alternate functions: ADC channel AN4, comparator 2 non-inverting input (C2IN+), ECCP enhanced PWM output P1F, and external ADC reference input (VREF+).
10	PA3/AN3	bidirectional	General-purpose I/O bit PA3 with pull-up/pull-down. Alternate function: ADC channel AN3 analog input. PORTA change-interrupt capable.
11	PA2/AN2/C1OUT/T0CKI	bidirectional	General-purpose I/O bit PA2. Alternate functions: ADC channel AN2, comparator 1 output (C1OUT), and Timer0 external clock input (T0CKI). PORTA change-interrupt capable.
12	PA1/AN1/C1IN-/ISPDAT	bidirectional	General-purpose I/O bit PA1. Alternate functions: ADC channel AN1, comparator 1 inverting input (C1IN-), and in-system programming data (ISPDAT). PORTA change-interrupt capable.
13	PA0/AN0/C1IN+/ISPCLK	bidirectional	General-purpose I/O bit PA0. Alternate functions: ADC channel AN0, comparator 1 non-inverting input (C1IN+), and in-system programming clock (ISPCLK). PORTA change-interrupt capable.
14	GND	power_in	Ground / VSS reference for all supplies and I/O.

Key specifications

Parameter	Value
Manufacturer	FMD Fremont Micro Devices
Package	SOIC-14
Category	MCU
Pins	14

Ordering variants

Same part, different packaging or reel option.

FT61FC20-URT
FT61FC21A-RB
FT61FC21B-RB
FT61FC21A-DRB
FT61FC21B-DRB
FT61FC2F-MRB
FT61FC22A-RB
FT61FC22A-RT
FT61FC22A-GB
FT61FC22A-GT
FT61FC22A-DRB
FT61FC22A-DGB
FT61FC23-RB
FT61FC23-RT
FT61FC23-DRB

CAD (KiCad official)

Symbol: FT61FC22A-RB
Footprint: Package_SO:SOIC-14_3.9x8.7mm_P1.27mm
3D model: SOIC-14 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`ft61fc22a-rb.step`	195 KB	You want the bare part, or you mark your own boards.
`ft61fc22a-rb-etched.step`	2.5 MB	You want the part with `FT61FC22A-RB` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 624 faces against 237 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: FMD Fremont Micro Devices datasheet (114 pp, sha256 4472e73852f781e2, retrieved 2026-08-17, 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: 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