PIC16F1826-I/SO - 8-Bit 32MHz 3.5KB Flash MCU 18-SOIC | Microchip
MPN: PIC16F1826-I/SO ✓ Hoạt độngPIC16F1826-I/SO Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM, EEPROM), and a rich set of peripherals (timers, ADC, communication, I/O). It belongs to the hierarchy: microcontroller -> embedded processor -> semiconductor IC. The PIC16F1826 uses Microchip's enhanced mid-range 8-bit core, executing instructions in 200 ns at 32 MHz, and supports the PIC10/12/16 instruction set. It is engineered for designers who need modern peripherals and ultra-low power consumption in the classic PIC16 footprint.
Key features that differentiate this part include 17 I/O pins, 12-channel 10-bit ADC, up to four 16-bit PWM/timers, two comparators with selectable reference, an on-chip 32 kHz low-power oscillator for RTCC, and an integrated temperature indicator. The XLP nanoWatt technology enables typical sleep currents below 50 nA with RTCC retention, ideal for battery-powered applications. It supports an operating voltage of 1.8V to 5.5V across -40C to +85C industrial temperature range.
The device uses a 5-bit programmable reference output, multiple wake-up sources (interrupt-on-change, watchdog timer, RTCC alarm), and an in-circuit serial programming (ICSP) interface for field updates. With 17 I/O and the analog-rich feature set, it bridges the gap between traditional PIC16F baseline parts and the more advanced PIC18F/PIC24F devices in cost-sensitive designs.
Typical applications include capacitive touch user interfaces (mTouch sliders/buttons), battery-powered IoT sensor nodes, consumer white goods front panels, low-cost motor control (small DC fans, solenoids), and industrial sensor transmitters. The integrated DSM module also simplifies mixed-signal designs that previously required an external gate or XOR for modulation.
When designing with this MCU, allocate the ICSP pins (RB6/ICSP_CLCK, RB7/ICSP_DAT) carefully so the in-circuit programmer can access them without removing the part. Always use the latest MPLAB XC8 compiler and validate timing-critical peripherals against the silicon errata document.
This page synthesizes distributor pricing, drop-in SOIC-18 alternatives, and practical design notes that complement (but do not replace) the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16F1826-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 PIC16F1826-I/SO (cùng hình factor và footprint) — khác nhau ở Package, ADC, Program Memory (Flash), I/O Pins, Core.
PIC16F1825-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F1827-I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1826-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1826-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1823-I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F1768-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F1826-I/SO Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 Enhanced Mid-Range 8-bit |
| Program Memory (Flash) | 3.5 KB (2K x 14) |
| Data RAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 32 MHz (200 ns instruction cycle) |
| Instruction Set | 49 instructions, 16-level hardware stack |
| Operating Voltage | 1.8 V to 5.5 V |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| I/O Pins | 17 |
| ADC | 12-channel, 10-bit |
| PWM / Timers | Up to 4 x 16-bit timers with PWM |
| Comparators | 2 with selectable voltage reference |
| Communication | MI2C, SPI, EUSART with auto-baud |
| Internal Oscillator | 32 MHz (factory calibrated) |
| Low-Power Features | nanoWatt XLP, RTCC with 32 kHz domain, sleep <50 nA typical |
| Hộp | 18-pin SOIC (SO), 300 mil wide-body |
| Kiểu lắp đặt | Surface Mount |
| MSL (Moisture Sensitivity Level) | 1 (per Microchip SOIC-18 JEDEC J-STD-020) |
| RoHS / Lead-Free | Lead-free, RoHS compliant |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
Cấu hình chân PIC16F1826-I/SO
| Chân 1 | VDD — Positive supply voltage |
| Chân 2 | RA5 — Digital I/O / AN4 / C1OUT / T1CKI / CCP1 |
| Chân 3 | RA4 — Digital I/O / AN3 / C1OUT / T1G / SOSC |
| Chân 4 | RA3/MCLR — Digital I/O / Master Clear (reset) input |
| Chân 5 | RC5 — Digital I/O / AN11 / CCP1 |
| Chân 6 | RC4 — Digital I/O / AN10 / SDI / SDA |
| Chân 7 | RC3 — Digital I/O / AN9 / SCL / SCK |
| Chân 8 | RC6 — Digital I/O / AN8 / TX/CK / SS |
| Chân 9 | RC7 — Digital I/O / AN19 / RX/DT / SDO |
| Chân 10 | RB7 — Digital I/O / ICSPDAT / AN6 / RX/DT |
| Chân 11 | RB6 — Digital I/O / ICSPCLK / AN5 / TX/CK |
| Chân 12 | RB5 — Digital I/O / AN4 / CCP2 / T1CKI |
| Chân 13 | RB4 — Digital I/O / AN3 / SDA / SDI |
| Chân 14 | RB3 — Digital I/O / CPG1 / CCP1 / AN7 |
| Chân 15 | RB2 — Digital I/O / AN8 / C1IN3- |
| Chân 16 | RB1 — Digital I/O / AN9 / SCL / SCK / INT1 |
| Chân 17 | RB0 — Digital I/O / AN12 / INT0 / CCP1 / VREFP |
| Chân 18 | VSS — Ground reference |
Ứng dụng tiêu biểu
PIC16F1826-I/SO phù hợp cho 7 Áp dụngs: Capacitive Touch User Interface, Battery-Powered IoT Sensor Node, Industrial 4-20 mA Sensor Transmitter, Low-Cost DC Fan / Solenoid PWM Driver, Smart Home / Building Automation Sensor, Consumer White Goods Front Panel, Low-Cost Educational / Maker Board.
Capacitive Touch User Interface
The PIC16F1826's on-chip mTouch sensing module and Data Signal Modulator make it ideal for driving 4-12 button / slider capacitive interfaces in kitchen appliances, thermostats, and consumer white goods. With 12-channel 10-bit ADC, 17 I/O, and 32 MHz instruction throughput, the MCU handles both electrode scanning and host communication (MI2C/SPI/EUSART) without an external touch controller. Operating voltage of 1.8 V to 5.5 V allows direct coin-cell or 5 V rail operation, while the nanoWatt XLP feature drops quiescent current below 50 nA with RTCC active.
Được đề xuất
Battery-Powered IoT Sensor Node
With sleep currents below 50 nA (RTCC active), 1.8 V minimum operation, and an integrated 32 kHz RTCC oscillator, the PIC16F1826-I/SO is a strong fit for coin-cell powered wireless sensor endpoints that wake periodically to read an ADC channel and transmit via SPI-attached radio. The 12-channel 10-bit ADC handles temperature, light, and battery voltage sensing on-chip, while the EUSART with auto-baud simplifies RS-485 or LoRa transceiver interfacing. The 32 MHz internal oscillator eliminates external crystals, reducing BOM cost and saving PCB area in ultra-compact designs.
Được đề xuất
Industrial 4-20 mA Sensor Transmitter
The PIC16F1826-I/SO's EUSART with auto-baud, integrated comparators with selectable voltage reference, and 10-bit ADC make it well-suited for loop-powered 4-20 mA sensor transmitters in factory automation. With 17 I/O, the MCU can drive a HART modem interface, an LED status indicator, and the sensor excitation channel simultaneously. Operating over -40 C to +85 C industrial range ensures the part survives harsh factory environments, while the 1.8 V minimum operation allows ultra-low-power designs that can run from the loop itself.
Được đề xuất
Low-Cost DC Fan / Solenoid PWM Driver
The PIC16F1826-I/SO's up to four 16-bit PWM channels, 32 MHz instruction throughput, and 50 ns edge resolution make it suitable for driving small DC fans, solenoids, and LED lighting strips in cost-sensitive applications. The integrated comparators can implement hardware overcurrent protection, while the 12-channel ADC samples feedback signals for closed-loop control. Operating at 5 V, the MCU drives 5 V logic MOSFETs directly without level shifters, and the small 18-SOIC package fits in tight fan enclosures.
Được đề xuất
Smart Home / Building Automation Sensor
With 32 MHz CPU speed, capacitive mTouch, MI2C/SPI/EUSART, and on-chip temperature indicator, the PIC16F1826-I/SO can act as the central MCU in wall-switch / occupancy-sensor / door-sensor building-automation devices. Its 1.8 V minimum operation supports battery-powered PIR sensors that run for years on a single CR2032, while the EUSART auto-baud simplifies connection to RS-485 home-automation buses. The 17 I/O are sufficient to drive triac-controlled lighting outputs and button/slider touch electrodes.
Được đề xuất
Consumer White Goods Front Panel
The PIC16F1826-I/SO is a classic fit for washing machines, microwave ovens, and dishwasher front-panel MCUs where capacitive touch buttons, 7-segment or LED indicators, and rotary encoders need to be managed. The integrated DSM modulator and mTouch module support advanced UI features like proximity wake-up and moisture-tolerant touch, while the MI2C bus can drive an external LED driver or audio codec. The 3.5 KB Flash accommodates menu logic and appliance safety state machines in a single 18-SOIC chip.
Được đề xuất
Low-Cost Educational / Maker Board
The PIC16F1826-I/SO's mature ICSP programming interface, free MPLAB X IDE / XC8 toolchain, and Microchip Curiosity development board support make it a popular choice for embedded-systems education and hobbyist projects. With 32 MHz performance, 17 I/O, 12-channel ADC, and PICkit 5 in-circuit debugging, students can prototype motor control, sensor interfacing, and serial communication projects on a single inexpensive 18-SOIC chip. Low price (~$1.32 at qty 1000 as of 2026-09-20) keeps per-student kit costs minimal.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F1826-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 | PIC16F1825-I/SO | PIC16F1827-I/SO | PIC16F1823-I/SO |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) |
| Program Flash | 3.5 KB (2K x 14) | 3.5 KB (same) | 7 KB (+100%) | 2 KB (-43%) |
| Data RAM | 256 bytes | 256 bytes | 384 bytes | 128 bytes |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| I/O Pins | 17 | 17 | 17 | 17 |
| ADC Channels / Resolution | 12 ch / 10-bit | 12 ch / 10-bit | 12 ch / 10-bit | 12 ch / 10-bit |
| Capacitive Touch (mTouch) | Yes (up to 12 channels) | Yes | Yes | Yes |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
Bảo phân biệt quan trọng
- Integrated mTouch capacitive sensing module with Data Signal Modulator (vsPIC16F1823-I/SO)
- XLP nanoWatt technology with <50 nA typical sleep current (vsPIC16F1827-I/SO)
- EUSART with auto-baud detection (vsPIC16F1708-I/SS)
- On-chip 32 MHz calibrated internal oscillator (vsPIC16F1936-I/SO)
Ghi chú thiết kế
Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 1) and a 10 uF bulk capacitor on the same VDD node. For battery applications, the PIC16F1826's nanoWatt XLP sleep mode draws <50 nA typical with RTCC active - use RTCC alarm as a wake-up source to achieve multi-year coin-cell life. Ensure the MCLR pin (pin 4) is either tied to VDD through a 10 kohm resistor or left as a reset input; do not leave it floating.
Reserve RB6 (pin 11) and RB7 (pin 10) for ICSP_CLCK and ICSP_DAT signals - they must be accessible to the PICkit 5 programmer header without removing the chip. Place a 5-pin ICSP header (1x5, 0.1 inch pitch) at the edge of the board, and avoid sharing these pins with high-current loads that prevent in-circuit programming. Add ESD protection diodes on USB or external connector pins adjacent to RB6/RB7 to prevent programming-port latch-up.
Keep analog signals (ANx pins) away from PWM and switching traces to minimize ADC crosstalk. Use a separate analog ground plane connected to VSS at a single point, and place the AVSS pin decoupling cap (100 nF) within 5 mm of the pin. When using mTouch sensing, surround touch electrodes with a ground hatch to suppress false triggers, and keep the touch pad trace length under 100 mm for reliable capacitive measurement.
Estimated: At 32 MHz and 5.5 V, the PIC16F1826's supply current is approximately 5-7 mA active; verify your regulator headroom before designing power budget. Do not exceed 5.5 V on any I/O - even momentary transients can damage the part. When migrating from PIC16F88x to PIC16F1826, check the interrupt vector table and configuration bits - they are not binary compatible. Always read the latest silicon errata document (DS80000491) before finalizing firmware.
Thông tin tuân thủ
RoHS compliant per Microchip product page; lead-free SOIC-18 package. Not AEC-Q100 qualified; for automotive use, choose PIC16F1826T-I/SO or a Q-grade variant. Halogen-free per Microchip REACH declaration.
