PIC16F1786-I/SO - 8-Bit MCU, 14KB Flash, 32MHz | Microchip
MPN: PIC16F1786-I/SO ✓ Hoạt độngPIC16F1786-I/SO Tóm tắt
A PIC16F178x microcontroller belongs to the 8-bit PIC® MCU family from Microchip, which sits inside the broader hierarchy of microcontroller -> embedded controller -> semiconductor device. The PIC16F178x series is positioned above the baseline PIC10/12/16F families but below the PIC18 and dsPIC lines, targeting applications that need precision analog on-chip (12-bit ADC, 8-bit DAC, op-amps) while retaining the deterministic RISC instruction set that PIC MCUs are known for.
Key features include: 32 MHz internal oscillator (8 MHz with 4x PLL), 1.8V–5.5V wide operating range, nanoWatt XLP sleep currents (typical 50 nA in sleep with Watchdog Timer), 8-channel 12-bit ADC, an 8-bit DAC, two operational amplifiers usable as front-end gain stages, two Fast Comparators with programmable references, three 16-bit timers plus a PSMC peripheral, and dual hardware PWM/CCP blocks. On-chip debugging is supported via ICD/ICSP.
The architecture pairs a Harvard RISC core with a 14-bit instruction word, 16 hardware stack levels, and a unified peripheral bus enabling simultaneous ADC + DAC + op-amp operation. The integrated op-amps can be configured as transimpedance or non-inverting gain stages, eliminating external analog conditioning and reducing BOM count in sensor-interface designs.
Typical applications include LED lighting and color-mixing drivers, sensor conditioning and IoT edge nodes, BLDC/PMSM motor commutation via the PSMC, switching power supply secondary-side control, digital power conversion with the 12-bit ADC, precision battery management, and industrial HVAC controls.
When designing with the PIC16F1786-I/SO, observe the VDD/VSS decoupling guidance in the datasheet — typically a 0.1 µF ceramic close to each power pin plus a bulk 10 µF — and ensure the analog and digital VDD rails are tied at a single point if you need full 12-bit ADC linearity.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet — useful when comparing against PIC18, AVR or ARM Cortex-M0 alternatives for cost-sensitive analog-rich designs.
Bộ thay thế dễ dàng lắp đặt cho PIC16F1786-I/SO — 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/SO (cùng hình factor và footprint) — khác nhau ở Package, ADC, DAC, Operating Temperature, I/O Pins.
PIC16F1786-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1786-E/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1786-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1786-I/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1789-E/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F1769-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1719-I/MV
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1786-I/SO Tỷ lệ tối đa & tính chất điện
| Family | PIC16F178x (XLP) |
| Core | 8-bit PIC RISC, Harvard architecture |
| Instruction Word | 14-bit |
| Maximum CPU Frequency | 32 MHz |
| Instruction Execution | 200 ns at 20 MHz / 125 ns at 32 MHz |
| Program Flash Memory | 14 KB (8K x 14) |
| Data RAM | 1 KB |
| Data EEPROM | 256 B |
| I/O Pins | 25 (typical, varies by package) |
| Hộp | 28-pin SOIC (SO) |
| Operating Voltage Range | 1.8 V to 5.5 V |
| ADC | 12-bit, up to 11 channels |
| DAC | 8-bit, 1 channel |
| Op-Amps | 2 on-chip |
| Comparators | 2 (Fast Comp, programmable reference) |
| Timers | 3 x 16-bit + PSMC peripheral |
| PWM/CCP | 1 CCP + 1 ECCP + PSMC PWM |
| Serial Interfaces | I2C, SPI, EUSART (LIN-capable) |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (industrial -I) |
| MSL Moisture Sensitivity | 1 (unlimited floor life) |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Programming/Debug | ICSP/ICD via PICKit4/5, MPLAB X |
Cấu hình chân PIC16F1786-I/SO
| Chân 1 | RA0/AN0 — Bidirectional I/O / analog input 0 (ADC, op-amp, comparator) |
| Chân 2 | RA1/AN1 — Bidirectional I/O / analog input 1 |
| Chân 3 | RA2/AN2 — Bidirectional I/O / analog input 2 |
| Chân 4 | RA3/AN3/VREF+ — Bidirectional I/O / analog input 3 / VREF+ |
| Chân 5 | RA4/AN4 — Bidirectional I/O / analog input 4 |
| Chân 6 | RA5/AN5 — Bidirectional I/O / analog input 5 |
| Chân 7 | RA6/OSC2 — Bidirectional I/O / oscillator output |
| Chân 8 | RA7/OSC1 — Bidirectional I/O / oscillator input |
| Chân 9 | RB0/INT — Bidirectional I/O / external interrupt |
| Chân 10 | RB1 — Bidirectional I/O |
| Chân 11 | RB2 — Bidirectional I/O |
| Chân 12 | RB3/ICSPCLK — Bidirectional I/O / ICD clock |
| Chân 13 | RB4/ICSPDAT — Bidirectional I/O / ICD data |
| Chân 14 | RB5 — Bidirectional I/O |
| Chân 15 | RB6/PGC — Bidirectional I/O / ICSP clock |
| Chân 16 | RB7/PGD — Bidirectional I/O / ICSP data |
| Chân 17 | RC0 — Bidirectional I/O |
| Chân 18 | RC1 — Bidirectional I/O |
| Chân 19 | RC2 — Bidirectional I/O |
| Chân 20 | RC3 — Bidirectional I/O |
| Chân 21 | RC4 — Bidirectional I/O |
| Chân 22 | RC5 — Bidirectional I/O |
| Chân 23 | RC6 — Bidirectional I/O |
| Chân 24 | RC7 — Bidirectional I/O |
| Chân 25 | RE3/MCLR — Input only / Master Clear (reset) |
| Chân 26 | VDD — Positive supply voltage (1.8 V to 5.5 V) |
| Chân 27 | VSS — Ground reference |
| Chân 28 | AVDD — Analog positive supply (tie to VDD) |
Ứng dụng tiêu biểu
PIC16F1786-I/SO phù hợp cho 7 Áp dụngs: LED Lighting and Color-Mixing Drivers, Sensor Conditioning and IoT Edge Nodes, BLDC and PMSM Motor Commutation, Switching Power Supply Secondary-Side Control, Digital Power Conversion and PFC, Industrial HVAC and Appliance Controls, Battery Management and Fuel-Gauge Systems.
LED Lighting and Color-Mixing Drivers
The PIC16F1786-I/SO fits LED lighting designs because its 12-bit ADC and 8-bit DAC pair with three 16-bit timers plus the PSMC peripheral to generate high-resolution PWM channels for multi-channel RGBW dimming. With 14 KB Flash and 1 KB RAM, designers can embed full lookup-based color-temperature curves and DMX-512 stack without external memory. The XLP nanoWatt sleep mode draws ~50 nA typical, so a PIC16F05 controller can keep a battery-backed smart-bulb awake on standby for years. Compared to a discrete PWM controller, the integrated CCP+ECCP+PSMC triples give synchronized PWM with dead-band control, eliminating external gate-driver logic in high-CRI dimmer circuits.
Được đề xuất
Sensor Conditioning and IoT Edge Nodes
The PIC16F1786-I/SO is a strong fit for IoT sensor signal-conditioning because two integrated op-amps and a 12-bit ADC let you build a complete analog front-end — transimpedance, gain, filtering, thresholding — on the MCU itself. At 1.8–5.5 V operation, it can run directly from a coin cell, AA pack or 3.3 V system rail. With XLP sleep currents in the nanoAmp range and 14 KB Flash for protocol stacks, designers can ship a sensor node that wakes up, takes a reading over I2C, encrypts and transmits, then returns to sleep — often exceeding one year on a single 2032 coin cell.
Được đề xuất
BLDC and PMSM Motor Commutation
The PIC16F1786-I/SO is well-suited to small BLDC/PMSM motor control because the PSMC peripheral generates 6-channel complementary PWM with programmable dead-band — exactly what's needed for three-phase inverter gate drive. The 32 MHz CPU and 12-bit ADC sample back-EMF at >1 Msps for sensorless trapezoidal commutation of sub-100 W fan, pump or drone motors. With 14 KB Flash you can store commutation tables, fault-recovery routines and UART-based speed-command handling without external memory. The on-chip comparators can also be hard-wired to overcurrent protection, eliminating external protection logic.
Được đề xuất
Switching Power Supply Secondary-Side Control
For isolated DC-DC converter secondary-side control, the PIC16F1786-I/SO delivers 32 MHz CPU bandwidth to run a 100 kHz+ control loop while the 12-bit ADC senses Vout/IoTlinetext feedback simultaneously with the on-chip op-amp as a current-sense amplifier. The 8-bit DAC enables digital soft-start ramps, and PSMC generates synchronous-rectifier timing. Its wide 1.8–5.5 V VDD range lets the same firmware run on 3.3 V or 5 V auxiliary rails without redesign. Compared to a pure analog PWM controller, the PIC16F1786 adds programmable fault handling, telemetry and I2C/PMBus compatibility.
Được đề xuất
Digital Power Conversion and PFC
The PIC16F1786-I/SO fits digital power factor correction (PFC) and LLC converter designs because the 32 MHz core runs high-frequency control loops while the 12-bit ADC samples VIN, IIN and VOUT on a sub-microsecond timescale. Two on-chip op-amps can each form a current-sense amplifier, eliminating two external ICs. PSMC provides center-aligned PWM for totem-pole PFC and synchronous rectification. With 14 KB Flash and 1 KB RAM, designers can embed the full state machine, soft-start and protection firmware without external memory.
Được đề xuất
Industrial HVAC and Appliance Controls
For industrial HVAC damper and valve actuators, the PIC16F1786-I/SO is an excellent fit because of its industrial -40 to +85 C temperature range, integrated 12-bit ADC for temperature/pressure sensing, and PSMC for triac-fired heater control. The 14 KB Flash supports full Modbus RTU or BACnet stack and lookup-table-based PID control. Compared to a basic 8-bit MCU, the on-chip op-amps simplify 4–20 mA current-loop signal conditioning. The EUSART with LIN capability lets the same firmware drive LIN-based HVAC dampers.
Được đề xuất
Battery Management and Fuel-Gauge Systems
The PIC16F1786-I/SO is a fit for primary-cell and rechargeable battery management because its 1.8–5.5 V VDD range lets it run directly from a single Li-Ion or 2x AA stack without external LDO. The 12-bit ADC with internal 1.024 V reference provides accurate voltage and current measurement for coulomb-counting fuel gauges, while two on-chip op-amps can form a low-side current-sense amplifier. PSMC generates synchronous buck-converter timing for charging profiles. With XLP nanoWatt sleep currents and 14 KB Flash, the same MCU runs both BMS telemetry and a small SoC estimator.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F1786-I/SO — 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-I/SS | PIC16F1786-E/SO | PIC16F1786-I/ML | PIC16F1786-I/SP | PIC16F1789-E/SO | PIC16F1769-I/SO | PIC16F1719-I/MV |
|---|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (SO) | 28-SSOP (SS) - same footprint family | 28-SOIC (SO) - same | 28-QFN (ML) | 28-PDIP (SP) | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-UQFN (MV) |
| Program Flash | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB | 28 KB (+100%) | 14 KB | 14 KB |
| Data RAM | 1 KB | 1 KB | 1 KB | 1 KB | 1 KB | 2 KB (+100%) | 1 KB | 1 KB |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| 12-bit ADC Channels | up to 11 | up to 11 | up to 11 | up to 11 | up to 11 | up to 14 | up to 12 | up to 17 |
| On-chip DAC | 8-bit, 1 channel | 8-bit, 1 channel | 8-bit, 1 channel | 8-bit, 1 channel | 8-bit, 1 channel | 8-bit, 1 channel | None | 8-bit, 1 channel |
| Op-Amps on chip | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (extended) | -40 C to +85 C | -40 C to +85 C | -40 C to +125 C (extended) | -40 C to +85 C | -40 C to +85 C |
| Approx. 1pc Price (USD) | $2.85 | $2.92 | $3.10 | $2.99 | $2.95 | $3.60 | $2.45 | $2.78 |
Bảo phân biệt quan trọng
- Dual integrated op-amps eliminate external analog front-end ICs (vsPIC16F1719-I/MV (UQFN-28))
- Integrated 8-bit DAC vs no DAC on lower-cost peers (vsPIC16F1769-I/SO)
- PSMC peripheral with programmable dead-band for motor and PFC control (vsPIC16F1768-I/ML)
- Same-silicon pin compatibility across SOIC/SSOP/QFN/PDIP packages (vsPIC16F1789-E/SO (40-pin SOIC))
Ghi chú thiết kế
Place a 0.1 µF ceramic decoupling capacitor within 5 mm of each VDD/VSS pin pair on the PIC16F1786-I/SO, plus a single 10 µF bulk capacitor on the main VDD rail. According to the Microchip PIC16F1786 datasheet, AVDD and VDD should be tied at a single point near the MCU; placing a ferrite bead between them is acceptable for mixed-signal designs but adds 1–2 LSB to ADC offset error. Estimated: at 32 MHz with all peripherals active, IDD is ~7 mA typical at 5 V — the bulk cap should be sized to ride out any 100 µs inrush during MCU startup.
For 12-bit ADC accuracy on the PIC16F1786-I/SO, route analog signals (AN0–AN11) as short as possible, with a guard ground plane between analog and digital sections. Reference layout AN-1410 from Microchip for ADC PCB guidelines. Estimated: trace lengths above 50 mm or vias on analog traces can add 1–2 LSB of coupling noise; keep digital signals (PWM, PSMC outputs) at least 3 mm away from analog traces, and place the ADC reference bypass cap (typically 100 nF) directly on the VREF+/VREF- pins.
Do not leave the MCLR pin (pin 25 on 28-SOIC) floating — tie it to VDD through a 10 kΩ resistor for normal operation, or to VDD directly if you never need external reset. The PIC16F1786 datasheet warns that floating MCLR can cause spurious resets in noisy environments. Also: the ICSP pins (RB6/RB7) require 4.7 kΩ pull-ups only when PICKit is attached — for standalone operation leave them as regular GPIO. Avoid enabling the weak pull-ups on analog pins (RA0–RA5) since they introduce leakage current that degrades ADC accuracy at high source impedance.
When routing the PSMC PWM outputs to gate drivers on the PIC16F1786-I/SO, use impedance-controlled traces (50 Ω single-ended) for outputs above 50 kHz. Estimated: 32 MHz CPU with 4x PLL drives PWM at up to 250 kHz; rise times of 5 ns on RC0/RC2/etc. can couple into adjacent analog traces if not properly guarded. Series-termination resistors of 33 Ω at the source end reduce overshoot; keep traces shorter than 50 mm to avoid transmission-line effects. Reference application note AN-2771 (PWM Output Structure and Design).
The PIC16F1786-I/SO in 28-SOIC has a thermal resistance θJA of approximately 80 C/W (free air, JEDEC EIA/JESD51 4-layer test board). Estimated: at full 32 MHz operation across industrial -40 to +85 C, worst-case self-heating raises die temperature by ~10 C over ambient — well within the 125 C absolute maximum. For continuous high-current GPIO sinking (20 mA per pin, 100 mA total per port group), derate by 30% above +70 C ambient or move to a QFN package (PIC16F1786-I/ML) with θJA ~30 C/W.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page; not AEC-Q100 qualified (no automotive grade for this family — automotive users should look at PIC16F1786-E/SO at extended temperature range, not AEC-Q100). Lead-free and halogen-free.
