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PIC16F1939-I
Public Made by Adomby adom
Microchip Tech Microcontrollers (MCU/MPU/SOC), TQFP-44(10x10). Datasheet-verified pinout, 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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README
markdownPIC16F1939-I
Microchip Tech · Microcontrollers (MCU/MPU/SOC) · TQFP-44(10x10)
PIC16F1939-I from Microchip Tech, in a TQFP-44(10x10). 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 | RC7 | bidirectional | Port C bit 7; EUSART RX/DT input, PWM3 P3B output, LCD SEG8 segment drive |
| 2 | RD4 | bidirectional | Port D bit 4; capacitive sensing input CPS12, PWM P2D output, LCD SEG17 segment drive |
| 3 | RD5 | bidirectional | Port D bit 5; capacitive sensing input CPS13, PWM P1B output, LCD SEG18 segment drive |
| 4 | RD6 | bidirectional | Port D bit 6; capacitive sensing input CPS14, PWM P1C output, LCD SEG19 segment drive |
| 5 | RD7 | bidirectional | Port D bit 7; capacitive sensing input CPS15, PWM P1D output, LCD SEG20 segment drive |
| 6 | VSS | power_in | Ground reference |
| 7 | VDD | power_in | Positive supply voltage 1.8V to 5.5V |
| 8 | RB0 | bidirectional | Port B bit 0; ADC channel AN12, capacitive sensing CPS0, CCP4 capture/compare, external interrupt INT, LCD SEG0 |
| 9 | RB1 | bidirectional | Port B bit 1; ADC channel AN10, capacitive sensing CPS1, PWM P1C output, LCD VLCD1 reference |
| 10 | RB2 | bidirectional | Port B bit 2; ADC channel AN8, capacitive sensing CPS2, PWM P1B output, LCD VLCD2 reference |
| 11 | RB3 | bidirectional | Port B bit 3; ADC channel AN9, capacitive sensing CPS3, CCP2 PWM output, LCD VLCD3 reference |
| 12 | NC | unconnected | No connect |
| 13 | NC | unconnected | No connect |
| 14 | RB4 | bidirectional | Port B bit 4; ADC channel AN11, capacitive sensing CPS4, PWM P1D output, LCD COM0 common drive |
| 15 | RB5 | bidirectional | Port B bit 5; ADC channel AN13, capacitive sensing CPS5, CCP3 PWM, Timer1 gate input T1G, LCD COM1 |
| 16 | RB6 | bidirectional | Port B bit 6; ICSP programming clock, LCD SEG14 segment drive |
| 17 | RB7 | bidirectional | Port B bit 7; ICSP programming data bidirectional, LCD SEG13 segment drive |
| 18 | RE3 | input | Master Clear reset input with internal pull-up or VPP programming voltage (6V nominal) |
| 19 | RA0 | bidirectional | Port A bit 0; ADC channel AN0, SR latch output SRNQ, SPI client select SS, LCD SEG12 |
| 20 | RA1 | bidirectional | Port A bit 1; ADC channel AN1, comparator C1/C2 negative input, LCD SEG7 segment drive |
| 21 | RA2 | bidirectional | Port A bit 2; ADC channel AN2, VREF- negative reference input, DAC output, LCD COM2 common drive |
| 22 | RA3 | bidirectional | Port A bit 3; ADC channel AN3, VREF+ positive reference input, LCD SEG15 segment drive |
| 23 | RA4 | bidirectional | Port A bit 4; Capacitive sensing CPS6, Timer0 clock input T0CKI, CCP5 capture/compare, SR latch output SRQ, LCD SEG4 |
| 24 | RA5 | bidirectional | Port A bit 5; ADC channel AN4, capacitive sensing CPS7, SR latch output SRNQ, SPI select SS, LCD SEG5 |
| 25 | RE0 | bidirectional | Port E bit 0; ADC channel AN5, CCP3 PWM output, LCD SEG21 segment drive |
| 26 | RE1 | bidirectional | Port E bit 1; ADC channel AN6, PWM P3B output, LCD SEG22 segment drive |
| 27 | RE2 | bidirectional | Port E bit 2; ADC channel AN7, CCP5 capture/compare, LCD SEG23 segment drive |
| 28 | VDD | power_in | Positive supply voltage 1.8V to 5.5V |
| 29 | VSS | power_in | Ground reference |
| 30 | RA7 | bidirectional | Port A bit 7; oscillator input OSC1/CLKIN, LCD SEG2 segment drive |
| 31 | RA6 | bidirectional | Port A bit 6; oscillator output OSC2/CLKOUT or FOSC/4, LCD SEG1 segment drive |
| 32 | RC0 | bidirectional | Port C bit 0; Timer1 oscillator output T1OSO, Timer1 clock input T1CKI, PWM P2B output |
| 33 | NC | unconnected | No connect |
| 34 | NC | unconnected | No connect |
| 35 | RC1 | bidirectional | Port C bit 1; Timer1 oscillator input T1OSI, CCP2 PWM output, PWM P2A output |
| 36 | RC2 | bidirectional | Port C bit 2; CCP1 PWM output, PWM P1A output, LCD SEG3 segment drive |
| 37 | RC3 | bidirectional | Port C bit 3; SPI clock output SCK, I2C clock line SCL, LCD SEG6 segment drive |
| 38 | RD0 | bidirectional | Port D bit 0; capacitive sensing input CPS8, LCD COM3 common drive |
| 39 | RD1 | bidirectional | Port D bit 1; capacitive sensing input CPS9, CCP4 capture/compare |
| 40 | RD2 | bidirectional | Port D bit 2; capacitive sensing input CPS10, PWM P2B output |
| 41 | RD3 | bidirectional | Port D bit 3; capacitive sensing input CPS11, PWM P2C output, LCD SEG16 segment drive |
| 42 | RC4 | bidirectional | Port C bit 4; SPI data input SDI, I2C data line SDA, Timer1 gate input T1G, LCD SEG11 |
| 43 | RC5 | bidirectional | Port C bit 5; SPI data output SDO, LCD SEG10 segment drive |
| 44 | RC6 | bidirectional | Port C bit 6; EUSART transmit output TX/CK, PWM3 CCP3 output, LCD SEG9 segment drive |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | TQFP-44(10x10) |
| Category | Embedded Processors & Controllers |
| Pins | 44 |
CAD (KiCad official)
- Symbol:
PIC16F1939-I - Footprint:
Package_QFP:TQFP-44_10x10mm_P0.8mm - 3D model: TQFP-44(10x10) (KiCad packages3D, STEP)
- 3D model files:
pic16f1939-i-etched.step/pic16f1939-i-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pic16f1939-i.step/pic16f1939-i.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (469 pp, sha256
2f2d02b24a96dd6d, retrieved 2026-09-21, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-4-6(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).