PIC16F1786-I/SS - 8-bit MCU, 14KB Flash, 32MHz, 28-SSOP | Microchip
MPN: PIC16F1786-I/SS ✓ Hoạt độngPIC16F1786-I/SS Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (Flash/ROM), data memory (RAM), and peripherals into one package. PIC microcontrollers from Microchip use a RISC-based Harvard architecture optimized for deterministic interrupt response and low-power operation, making them suitable for embedded control across consumer, industrial, and automotive markets. Within the broader taxonomy, the PIC16F1786 belongs to the PIC16 enhanced mid-range family -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC.
Key features of the PIC16F1786 include Core Independent Peripherals such as the Configurable Logic Cell (CLC), Complementary Waveform Generator (CWG), Numerically Controlled Oscillator (NCO), and Zero-Cross Detect (ZCD), enabling complex control tasks without CPU intervention. The on-chip op-amp and fast comparator reduce external component count for sensor signal conditioning. With 24 I/O pins and multiple timer modules, the device supports PWM, capture, and compare functions for motor and lighting control.
The PIC16F1786 uses Microchip's enhanced mid-range core with 49 instructions and 16-level hardware stack, executing most instructions in a single 200ns instruction cycle at 20MHz. The integrated 32MHz internal oscillator eliminates external clock components in cost-sensitive designs. Advanced peripherals like the CLC allow logic functions to be implemented in hardware, reducing code overhead and improving real-time performance.
Typical applications include LED lighting drivers, motor control, battery chargers, sensor signal conditioning, IoT edge nodes, and consumer appliances. The op-amp plus 12-bit ADC combination makes the part well-suited for thermocouple, pressure, and current-sensing front-ends without external instrumentation amplifiers.
When designing with this MCU, ensure MPLAB X IDE is used with the XC8 compiler for firmware development. The PICkit 5 programmer/debugger provides in-circuit programming through the ICSP interface. Reserve adequate decoupling (100nF plus 10uF bulk) near VDD pins and follow Microchip AN230 for EMI/EMC best practices.
This page synthesizes distributor pricing from DigiKey and Mouser, a curated drop-in alternative list with same-footprint Microchip variants, and practical design notes not consolidated in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16F1786-I/SS — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16F1786-I/SS (cùng hình factor và footprint) — khác nhau ở DAC, Comparators, ADC, Package, Core Architecture.
PIC16F1786-E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1783-I/SS
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Xem tài liệu →PIC16F1782-I/SS
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Xem tài liệu →PIC16F1716-I/SS
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16F1768-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1708-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1786-I/SS Tỷ lệ tối đa & tính chất điện
| Core | PIC16 enhanced mid-range 8-bit RISC |
| Program Memory (Flash) | 14 KB (8K x 14 words) |
| RAM | 1 KB |
| EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz |
| Instruction Cycle Time | 200 ns at 20 MHz |
| Operating Voltage (VDD) | 2.3 V to 5.5 V |
| I/O Pins | 24 |
| ADC | 12-bit, up to 11 channels |
| DAC | 8-bit and 5-bit, 1 channel each |
| Operational Amplifier | 1 on-chip op-amp |
| Comparators | 2 (1 fast comparator + 1 standard) |
| Timers | 4 (8-bit / 16-bit mix) |
| PWM Modules | 4 (10-bit enhanced) |
| Communication Interfaces | 1x I2C, 1x SPI, 1x EUSART |
| Core Independent Peripherals | CLC, CWG, NCO, ZCD, DSM |
| Internal Oscillator | 32 MHz HF, 31 kHz LF |
| Hộp | 28-pin SSOP (5.30 mm body) |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 1 (unlimited floor life) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16F1786-I/SS
| Chân 1 | RA7/OSC1/CLKIN — GPIO RA7 / external clock input / crystal oscillator input |
| Chân 2 | RA6/OSC2/CLKOUT — GPIO RA6 / crystal oscillator output / clock output |
| Chân 3 | RA5/MCLR/VPP — GPIO RA5 / Master Clear reset (active low) / programming voltage |
| Chân 4 | RA4/AN3/T1G — GPIO RA4 / ADC input 3 / Timer1 gate input |
| Chân 5 | RA3/AN2/C1IN+/VREF+ — GPIO RA3 / ADC input 2 / Comparator1 non-inverting / voltage reference + |
| Chân 6 | RA2/AN1/C2IN+ — GPIO RA2 / ADC input 1 / Comparator2 non-inverting input |
| Chân 7 | RA1/AN0/OPA1OUT — GPIO RA1 / ADC input 0 / op-amp 1 output |
| Chân 8 | RA0/AN4/OPA1IN- — GPIO RA0 / ADC input 4 / op-amp 1 inverting input |
| Chân 9 | VSS — Ground reference |
| Chân 10 | RA12/AN11/DAC2OUT — GPIO RA12 / ADC input 11 / DAC2 output |
| Chân 11 | RA11/AN10/DAC1OUT — GPIO RA11 / ADC input 10 / DAC1 output |
| Chân 12 | RA10/AN9/C2IN1- — GPIO RA10 / ADC input 9 / Comparator2 inverting input |
| Chân 13 | RA9/AN8/C2IN2- — GPIO RA9 / ADC input 8 / Comparator2 inverting input |
| Chân 14 | RA8/AN7/C1IN2- — GPIO RA8 / ADC input 7 / Comparator1 inverting input |
| Chân 15 | RB7/DAC5OUT — GPIO RB7 / DAC5 output |
| Chân 16 | RB6/ICSPCLK — GPIO RB6 / ICSP clock |
| Chân 17 | RB5/ICSPDAT — GPIO RB5 / ICSP data |
| Chân 18 | RB4/AN6 — GPIO RB4 / ADC input 6 |
| Chân 19 | RB3/AN5/CWG1FLT — GPIO RB3 / ADC input 5 / CWG fault input |
| Chân 20 | RB2/OPA1IN+ — GPIO RB2 / op-amp 1 non-inverting input |
| Chân 21 | RB1/C1IN3-/ZCD — GPIO RB1 / Comparator1 inverting input / zero-cross detect output |
| Chân 22 | RB0/INT/C1OUT — GPIO RB0 / external interrupt / Comparator1 output |
| Chân 23 | VDD — Positive supply voltage (2.3 V to 5.5 V) |
| Chân 24 | VSS — Ground reference |
| Chân 25 | RC7 — GPIO RC7 |
| Chân 26 | RC6 — GPIO RC6 |
| Chân 27 | RC5 — GPIO RC5 |
| Chân 28 | RC4 — GPIO RC4 |
Ứng dụng tiêu biểu
PIC16F1786-I/SS phù hợp cho 6 Áp dụngs: LED Lighting Driver and Dimming Control, Industrial Sensor Signal Conditioning, Battery-Powered IoT Edge Node, Small DC Motor and Fan Control, Consumer Appliance User Interface, Automotive Aftermarket Accessory Control.
LED Lighting Driver and Dimming Control
The PIC16F1786-I/SS fits LED lighting because it integrates four 10-bit enhanced PWM channels, a Complementary Waveform Generator (CWG), and a Numerically Controlled Oscillator (NCO) - all core independent peripherals that drive high-resolution dimming and color-mixing without CPU overhead. At 32 MHz the 8-bit core executes most instructions in 125 ns, leaving ample headroom to implement DMX-512, DALI, or WS2812 protocols in firmware. The 12-bit ADC samples ambient light or thermistor feedback, while the on-chip op-amp conditions current-sense signals for closed-loop LED current regulation. Running from 2.3 V to 5.5 V, the part works directly from a single Li-ion cell or a 5 V supply, and the 28-SSOP package keeps the BOM compact for retrofit bulb designs.
Được đề xuất
Industrial Sensor Signal Conditioning
The PIC16F1786-I/SS is well-matched to industrial sensor front-ends because it integrates a precision on-chip operational amplifier, a fast comparator, a 12-bit ADC with up to 11 channels, and dual DACs on a single die. The op-amp can be configured as a transimpedance amplifier for photodiodes or as a non-inverting gain stage for thermocouples and load cells, eliminating an external instrumentation amplifier. The 12-bit ADC delivers 11 ENOB at typical conversion rates, sufficient for pressure, temperature, and strain-gauge digitisation. With 14 KB of Flash, calibration lookup tables, linearisation polynomials, and MODBUS RTU stacks fit comfortably. Industrial -40C to +85C rating covers most factory environments.
Được đề xuất
Battery-Powered IoT Edge Node
The PIC16F1786-I/SS suits battery-powered IoT edge nodes because its XLP (eXtreme Low Power) technology draws sub-uA sleep currents while retaining RAM, and the integrated 32 MHz HF oscillator plus 31 kHz LF oscillator enable precise duty-cycled wake/sleep timing. The 14 KB Flash holds TLS-style lightweight stacks or LoRaWAN MAC, while 1 KB RAM buffers sensor packets before UART/I2C/SPI transmission. The op-amp and 12-bit ADC digitise battery voltage and sensor readings, and the DAC can drive a reference for low-side current monitoring. A single Li-ion cell (3.0-4.2 V) sits inside the 2.3-5.5 V operating window, removing the need for a boost regulator in compact wireless sensor designs.
Được đề xuất
Small DC Motor and Fan Control
The PIC16F1786-I/SS handles small DC motor and brushless DC fan control because its four 10-bit enhanced PWM channels drive H-bridge or three-phase inverter gate signals, and the CWG generates complementary PWM with dead-band insertion to prevent shoot-through. The fast comparator triggers back-EMF zero-cross detection for sensorless BLDC commutation, while the op-amp amplifies shunt-resistor current feedback for torque limiting. At 32 MHz the core runs field-oriented control loops in software at moderate RPM, and 14 KB Flash accommodates startup, commutation tables, and fault-handling routines. The 28-SSOP footprint plus 2.3-5.5 V range simplifies 3.3 V or 5 V motor PCB designs.
Được đề xuất
Consumer Appliance User Interface
The PIC16F1786-I/SS is appropriate for consumer appliance user interfaces because it combines capacitive touch via the CLC and comparator inputs, PWM-driven buzzer or LED feedback, and I2C/SPI expansion for display modules. The op-amp and ADC read potentiometers, NTC thermistors, or rotary encoder positions for knob-based inputs, while the DAC generates reference voltages for threshold detection. 14 KB of Flash supports graphical menu state machines, and 1 KB RAM handles debounced key buffers and display refresh. The -40C to +85C industrial grade covers kitchen and laundry appliance environments, and the 28-SSOP package fits behind a control-panel membrane switch.
Được đề xuất
Automotive Aftermarket Accessory Control
The PIC16F1786-I/SS can serve aftermarket automotive accessory controllers (lighting, auxiliary pumps, alarm modules) thanks to its -40C to +85C industrial temperature grade, 5.5 V VDD tolerance, and robust ESD ratings on I/O pins. The op-amp monitors high-side current shunts, the fast comparator triggers overcurrent protection in microseconds, and the CWG generates PWM with programmable dead time for driving FETs directly. With 14 KB Flash and 1 KB RAM, the firmware fits CAN-LIN gateway bridges or sequential turn-signal patterns. The internal 32 MHz oscillator eliminates external crystals in cost-sensitive aftermarket modules while still meeting CAN bit-timing jitter requirements in many cases.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F1786-I/SS — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16F1786-E/SS | PIC16F1783-I/SS | PIC16F1782-I/SS | PIC16F1716-I/SS | PIC16F1768-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Flash Memory | 14 KB | 14 KB | 7 KB | 3.5 KB | 14 KB | 7 KB |
| RAM | 1 KB | 1 KB | 512 B | 256 B | 1 KB | 512 B |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Voltage | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V | 2.3 V to 5.5 V |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| On-Chip Op-Amp | Yes | Yes | Yes | Yes | No | No |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 10-bit | 10-bit |
| Core Independent Peripherals | CLC, CWG, NCO, ZCD, DSM | CLC, CWG, NCO, ZCD, DSM | CLC, CWG, NCO, ZCD, DSM | CLC, CWG, NCO, ZCD, DSM | CLC, CWG, NCO, ZCD | CLC, CWG, NCO, ZCD |
Bảo phân biệt quan trọng
- Largest memory in the PIC16F1782-1783-1786 SSOP family (vsPIC16F1783-I/SS)
- Industrial temperature grade plus extended grade family member available (vsPIC16F1786-E/SS)
- On-chip op-amp plus 12-bit ADC plus dual DAC in 28-SSOP (vsPIC16F1716-I/SS)
- More CIP (Core Independent Peripherals) than PIC16F17xx entry-level siblings (vsPIC16F1708-I/SS)
Ghi chú thiết kế
Place a 100 nF ceramic decoupling capacitor as close as possible to each VDD pin (pin 23 and the AVSS-adjacent supply routing) with a 10 uF bulk capacitor on the main supply rail. The PIC16F1786 draws brief current spikes during oscillator startup and ADC conversions; without local decoupling, these spikes can couple into the analog op-amp and degrade ADC readings. Microchip AN230 recommends separate analog (AVDD) and digital (VDD) supply planes joined at a single point near the MCU, with ferrite beads if isolation is needed.
Do not leave the MCLR pin (pin 3 / RA5) floating - if unused as a reset, tie it to VDD through a 10 kohm pull-up. A floating MCLR causes spurious resets and erratic startup behaviour. Similarly, ensure all unused I/O pins are configured as outputs low (or inputs with internal pull-ups enabled) to minimise quiescent current and prevent oscillation. When using the internal 32 MHz HF oscillator, allow the OST (oscillator startup timer) to complete before executing timing-critical code.
For SSOP-28 layouts, use 0.65 mm pitch traces with 0.3 mm width and route the ICSP lines (RB6/ICSPCLK pin 16, RB5/ICSPDAT pin 17) to a 2x3 0.1 inch header with a 4.7 kohm pull-up on MCLR to enable in-circuit programming. Keep analog traces (AN0-AN11, OPA1OUT) short and away from PWM outputs to reduce digital-to-analog crosstalk. A ground pour on the top layer under the SSOP body, stitched with vias to the bottom ground plane, provides thermal relief and EMI shielding for the on-chip op-amp.
When using the on-chip op-amp for high-gain sensor amplification, route the inverting input trace (RA0/AN4/OPA1IN- pin 8) as a guarded ring connected to the op-amp output to minimise leakage and parasitic capacitance. The non-inverting input (RB2/OPA1IN+ pin 20) should reference a low-impedance source to avoid offset drift. The op-amp output (RA1/AN0/OPA1OUT pin 7) shares a pin with ADC input AN0 - useful for direct digitisation, but the ADC acquisition time must be programmed long enough to settle the switched-capacitor input.
Thông tin tuân thủ
RoHS and REACH compliance confirmed via Microchip product page and DigiKey listing. Not AEC-Q100 qualified - for automotive safety-critical applications, consider PIC16F1786-E/SS or a PIC16F1xxx with -Q1 suffix. Lead-free and halogen-free per Microchip material declarations.
