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PIC16F1933-I
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Microchip Tech Microcontrollers (MCU/MPU/SOC), SSOP-28-208mil. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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Datasheet
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README
markdownPIC16F1933-I
Microchip Tech · Microcontrollers (MCU/MPU/SOC) · SSOP-28-208mil
PIC16F1933-I from Microchip Tech, in a SSOP-28-208mil. 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 | VPP/MCLR/RE3 | input | Active-low master-clear reset input multiplexed with RE3 input-only I/O and VPP programming-voltage input; internal weak pull-up selectable in software; RE3 is the device's sole input-only pin per the 25 I/O count on page 2. |
| 2 | RA0 | bidirectional | Bidirectional general-purpose I/O pin RA0 with high source/sink current sufficient to drive LEDs directly, programmable weak pull-up, and interrupt-on-change; multiplexed with a 10-bit ADC analog input channel and mTouch capacitive-sensing channel. |
| 3 | RA1 | bidirectional | Bidirectional general-purpose I/O pin RA1 with high source/sink current, programmable weak pull-up, and interrupt-on-change; multiplexed with a 10-bit ADC analog input channel and mTouch capacitive-sensing channel. |
| 4 | RA2 | bidirectional | Bidirectional general-purpose I/O pin RA2 with high source/sink current, programmable weak pull-up, and interrupt-on-change; multiplexed with ADC analog input, DAC output (DAC1OUT), and negative voltage reference (VREF−). |
| 5 | RA3 | bidirectional | Bidirectional general-purpose I/O pin RA3 with high source/sink current, programmable weak pull-up, and interrupt-on-change; multiplexed with ADC analog input and positive voltage reference (VREF+); reference options include 1.024 V, 2.048 V, and 4.096 V per FVR module. |
| 6 | RA4 | bidirectional | Bidirectional general-purpose I/O pin RA4 with high source/sink current, programmable weak pull-up, and interrupt-on-change; multiplexed with Timer0 external clock input (T0CKI), Comparator 1 output (C1OUT), and SR latch output. |
| 7 | RA5 | bidirectional | Bidirectional general-purpose I/O pin RA5 with high source/sink current, programmable weak pull-up, and interrupt-on-change; multiplexed with ADC analog input, Comparator 2 output (C2OUT), and Timer1 clock input (T1CKI). |
| 8 | VSS | power_in | Ground reference for logic and I/O; first of two VSS pins on the 28-pin SSOP package. |
| 9 | RA7 | bidirectional | Bidirectional general-purpose I/O pin RA7 with high source/sink current; multiplexed with external oscillator input (OSC1/CLKIN) accepting DC to 32 MHz per device clock specification on page 1. |
| 10 | RA6 | bidirectional | Bidirectional general-purpose I/O pin RA6 with high source/sink current; multiplexed with oscillator output (OSC2/CLKOUT) for crystal feedback or clock output. |
| 11 | RC0 | bidirectional | Bidirectional general-purpose I/O pin RC0 with high source/sink current, programmable weak pull-up, and interrupt-on-change; multiplexed with the Timer1 low-power 32 kHz oscillator output (T1OSO/SOSCO) and Timer1 clock input. |
| 12 | RC1 | bidirectional | Bidirectional general-purpose I/O pin RC1 with high source/sink current, programmable weak pull-up, and interrupt-on-change; multiplexed with the Timer1 32 kHz oscillator input (T1OSI/SOSCI). |
| 13 | RC2 | bidirectional | Bidirectional general-purpose I/O pin RC2 with high source/sink current, programmable weak pull-up, and interrupt-on-change; multiplexed with CCP1 capture/compare/PWM (16-bit capture, max 125 ns resolution; 10-bit PWM up to 31.25 kHz). |
| 14 | RC3 | bidirectional | Bidirectional general-purpose I/O pin RC3 with high source/sink current, programmable weak pull-up, and interrupt-on-change; multiplexed with MSSP serial clock as SPI clock (SCK) or I2C clock (SCL) with 7-bit address masking and SMBus/PMBus compatibility. |
| 15 | RC4 | bidirectional | Bidirectional general-purpose I/O pin RC4 with high source/sink current, programmable weak pull-up, and interrupt-on-change; multiplexed with MSSP SPI data input (SDI) and I2C data (SDA); supports auto wake-up on start bit. |
| 16 | RC5 | bidirectional | Bidirectional general-purpose I/O pin RC5 with high source/sink current, programmable weak pull-up, and interrupt-on-change; multiplexed with MSSP SPI data output (SDO) and an ECCP PWM output channel. |
| 17 | RC6 | bidirectional | Bidirectional general-purpose I/O pin RC6 with high source/sink current, programmable weak pull-up, and interrupt-on-change; multiplexed with EUSART transmit (TX/CK); EUSART is compatible with RS-232, RS-485, and LIN with automatic baud-rate detection. |
| 18 | RC7 | bidirectional | Bidirectional general-purpose I/O pin RC7 with high source/sink current, programmable weak pull-up, and interrupt-on-change; multiplexed with EUSART receive (RX/DT); EUSART is compatible with RS-232, RS-485, and LIN. |
| 19 | VSS | power_in | Ground reference for logic and I/O; second VSS pin on the 28-pin SSOP package. |
| 20 | VDD | power_in | Positive power supply; 1.8 V to 5.5 V for PIC16F1933 or 1.8 V to 3.6 V for PIC16LF1933 per page 1. |
| 21 | RB0 | bidirectional | Bidirectional general-purpose I/O pin RB0 with high source/sink current to drive LEDs, individual programmable weak pull-up, and interrupt-on-change; multiplexed with external interrupt (INT) and an ECCP/CCP PWM channel. |
| 22 | RB1 | bidirectional | Bidirectional general-purpose I/O pin RB1 with high source/sink current, individual programmable weak pull-up, and interrupt-on-change; multiplexed with ECCP PWM output and an ADC analog input channel. |
| 23 | RB2 | bidirectional | Bidirectional general-purpose I/O pin RB2 with high source/sink current, individual programmable weak pull-up, and interrupt-on-change; multiplexed with an ECCP PWM half-bridge output and an ADC analog input channel. |
| 24 | RB3 | bidirectional | Bidirectional general-purpose I/O pin RB3 with high source/sink current, individual programmable weak pull-up, and interrupt-on-change; multiplexed with an ECCP full-bridge PWM output and an ADC analog input channel. |
| 25 | RB4 | bidirectional | Bidirectional general-purpose I/O pin RB4 with high source/sink current, individual programmable weak pull-up, and interrupt-on-change; multiplexed with an ECCP PWM output and SR latch output (SRQ). |
| 26 | RB5 | bidirectional | Bidirectional general-purpose I/O pin RB5 with high source/sink current, individual programmable weak pull-up, and interrupt-on-change; multiplexed with a CCP/ECCP PWM output, Timer1 gate input (T1G), and SR latch enable (SRQE). |
| 27 | RB6/ICSPCLK | bidirectional | Bidirectional general-purpose I/O pin RB6 with individual programmable weak pull-up and interrupt-on-change; serves as In-Circuit Serial Programming clock (ICSPCLK) during ICSP programming. |
| 28 | RB7/ICSPDAT | bidirectional | Bidirectional general-purpose I/O pin RB7 with individual programmable weak pull-up and interrupt-on-change; serves as In-Circuit Serial Programming data (ICSPDAT) during ICSP programming. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SSOP-28-208mil |
| Category | Embedded Processors & Controllers |
| Pins | 28 |
CAD (KiCad official)
- Symbol:
PIC16F1933-I - Footprint:
Package_SO:SSOP-28_5.3x10.2mm_P0.65mm - 3D model: SSOP-28-208mil (KiCad packages3D, STEP)
- 3D model files:
pic16f1933-i-etched.step/pic16f1933-i-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pic16f1933-i.step/pic16f1933-i.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (464 pp, sha256
bb8a1b7608e25714, retrieved 2026-09-22, 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: 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).