PIC16F18876T-I/PT - 28KB Flash 8-bit MCU | Microchip | TQFP-44
MPN: PIC16F18876T-I/PT ✓ Hoạt độngPIC16F18876T-I/PT Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer built around an 8-bit data path CPU, optimized for low power, deterministic real-time control and small footprint applications. PIC microcontrollers are part of the broader microcontroller hierarchy (MCU -> embedded controller -> system-on-chip -> semiconductor), and they are widely used in industrial, consumer, and automotive subsystems as the main decision-making element.
Key features of the PIC16F18876 include eXtreme Low Power (XLP) technology for battery-friendly operation, Core Independent Peripherals (CIPs) that offload tasks from the CPU, Functional Safety (FuSa) support for safety-critical designs, and Peripheral Pin Select (PPS) for flexible I/O mapping. The integrated 10-bit ADC2 with Computation automates averaging, oversampling, and threshold detection, while the CWG, SMT, and ZCD blocks enable motor-control, timing, and zero-crossing detection without CPU intervention.
Architecturally, the device uses a Harvard RISC core with a 14-bit instruction word and 16-level hardware stack, paired with a non-volatile Flash program store and a separate EEPROM data store. The integrated CRC/SCAN engine provides memory integrity checking, and the Windowed Watchdog Timer (WWDT) along with the HLT (Hardware Limit Timer) provides a defense-in-depth safety net required by IEC 61508 / ISO 26262 functional-safety applications.
Typical applications include industrial sensor nodes, low-power IoT endpoints, home appliances, motor control (BLDC fans and small pumps), LED lighting drivers, and safety-critical subsystems where FuSa documentation aids compliance. It is also a strong fit for general-purpose 8-bit replacements of legacy PIC16F/PIC18 designs that need more peripherals and lower power.
When designing with the PIC16F18876, always use the latest MPLAB X IDE and XC8 compiler, configure the PPS carefully to remap peripherals to desired pins, and follow the datasheet power-supply decoupling and unused-pin recommendations. The wide 1.8V to 5.5V VDD range allows direct connection to 3.3V or 5V rails.
This page synthesizes distributor pricing from DigiKey and Mouser, drop-in TQFP-44 alternatives in the same package, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16F18876T-I/PT — 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 PIC16F18876T-I/PT (cùng hình factor và footprint) — khác nhau ở ADC, Family, Package, Core, DAC.
PIC16F18876-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18877-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18875-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18876-E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18876T-I/PT Tỷ lệ tối đa & tính chất điện
| Family | PIC16F1887x (PIC16F18856/76/77 series) |
| Core | 8-bit PIC RISC, Harvard architecture |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data SRAM | 2 KB |
| Data EEPROM | 256 B |
| Maximum CPU Speed | 32 MHz |
| Operating Voltage (VDD) | 1.8 V to 5.5 V |
| Hộp | 44-pin TQFP (PT), 10x10 mm |
| Kiểu lắp đặt | Surface Mount |
| ADC | 10-bit ADC2 with Computation |
| DAC | 5-bit / 8-bit DAC |
| Comparators | Yes |
| PWM Channels | Yes (10-bit PWM) |
| Communication | EUSART, SPI, I2C |
| Special Peripherals | CWG, SMT, HLT, WWDT, SCAN/CRC, ZCD, PPS |
| Functional Safety | FuSa documentation package |
| Low-Power Technology | eXtreme Low Power (XLP) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial, "I") |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC16F18876T-I/PT
| Chân 1 | RA0 — Analog/Digital I/O or ADC input |
| Chân 2 | RA1 — Analog/Digital I/O or ADC input |
| Chân 3 | RA2 — Analog/Digital I/O or DAC reference |
| Chân 4 | RA3 — Analog/Digital I/O |
| Chân 5 | RA4 — Analog/Digital I/O |
| Chân 6 | RA5 — Analog/Digital I/O |
| Chân 7 | RA6 — Digital I/O / oscillator |
| Chân 8 | RA7 — Digital I/O / oscillator |
| Chân 9 | VSS — Ground |
| Chân 10 | VDD — Positive supply (1.8-5.5 V) |
| Chân 11 | RB0 — Digital I/O / PPS remappable |
| Chân 12 | RB1 — Digital I/O / PPS remappable |
| Chân 13 | RB2 — Digital I/O / PPS remappable |
| Chân 14 | RB3 — Digital I/O / PPS remappable |
| Chân 15 | RB4 — Digital I/O / PPS remappable |
| Chân 16 | RB5 — Digital I/O / PPS remappable |
| Chân 17 | RB6 — Digital I/O / ICSCLK |
| Chân 18 | RB7 — Digital I/O / ICSDAT |
| Chân 19 | VSS — Ground |
| Chân 20 | VDD — Positive supply |
| Chân 21 | RC0 — Digital I/O / PPS remappable |
| Chân 22 | RC1 — Digital I/O / PPS remappable |
| Chân 23 | RC2 — Digital I/O / PPS remappable |
| Chân 24 | RC3 — Digital I/O / PPS remappable |
| Chân 25 | RC4 — Digital I/O / PPS remappable |
| Chân 26 | RC5 — Digital I/O / PPS remappable |
| Chân 27 | RC6 — Digital I/O / PPS remappable |
| Chân 28 | RC7 — Digital I/O / PPS remappable |
| Chân 29 | RE0 — Digital I/O / PPS remappable |
| Chân 30 | RE1 — Digital I/O / PPS remappable |
| Chân 31 | RE2 — Digital I/O / PPS remappable |
| Chân 32 | RE3 — Digital I/O / PPS remappable |
| Chân 33 | VSS — Ground |
| Chân 34 | VDD — Positive supply |
| Chân 35 | RD0 — Digital I/O / PPS remappable |
| Chân 36 | RD1 — Digital I/O / PPS remappable |
| Chân 37 | RD2 — Digital I/O / PPS remappable |
| Chân 38 | RD3 — Digital I/O / PPS remappable |
| Chân 39 | RD4 — Digital I/O / PPS remappable |
| Chân 40 | RD5 — Digital I/O / PPS remappable |
| Chân 41 | RD6 — Digital I/O / PPS remappable |
| Chân 42 | RD7 — Digital I/O / PPS remappable |
| Chân 43 | VSS — Ground |
| Chân 44 | VDD — Positive supply |
Ứng dụng tiêu biểu
PIC16F18876T-I/PT phù hợp cho 6 Áp dụngs: Industrial Sensor Node, Battery-Powered IoT Endpoint, Small Motor Control (BLDC / PFCM), Home Appliance Control Board, LED Lighting Driver, Functional Safety Subsystem (FuSa).
Industrial Sensor Node
The PIC16F18876T-I/PT is an excellent fit for industrial 4-20 mA and 0-10 V sensor nodes because its 10-bit ADC2 with Computation automates averaging, oversampling, and threshold detection without CPU load. The integrated 5/8-bit DAC lets the same chip generate excitation signals for bridge sensors, while EUSART and I2C handle Modbus RTU or IO-Link PHY interfacing. With 28KB Flash and 2KB SRAM, designers can embed calibration tables and small protocol stacks. The 1.8V-5.5V VDD range accepts 3.3V or 5V industrial rails directly, and XLP technology keeps sleep current in the nanoamp range for loop-powered field devices.
Được đề xuất
Battery-Powered IoT Endpoint
For coin-cell or Li-ion powered IoT endpoints, the PIC16F18876T-I/PT's eXtreme Low Power (XLP) technology and Core Independent Peripherals deliver multi-year battery life. The SMT (Signal Measurement Timer) can wake the MCU on capacitive-touch or comparator events while the CPU stays asleep. ADC2 with Computation runs sensor scans autonomously, and the integrated ZCD detects mains-zero crossings for AC-powered variants without external components. With 32 MHz core speed and 28KB Flash, the chip can host lightweight BLE command stacks, LoRaWAN drivers, or proprietary sub-GHz protocols alongside application firmware.
Được đề xuất
Small Motor Control (BLDC / PFCM)
The PIC16F18876T-I/PT is well-suited for small brushless DC (BLDC) and single-phase permanent-magnet fan/pump control because it integrates 10-bit PWM, the Complementary Waveform Generator (CWG), and zero-crossing detect (ZCD). The CWG generates dead-band-controlled complementary outputs for half-bridge FET drivers without software intervention, while ADC2 samples back-EMF or current shunt for sensorless commutation. Functional Safety documentation helps designers reach IEC 60730 / Class B appliance safety. With 2KB SRAM, field-oriented control loops fit comfortably in the device.
Được đề xuất
Home Appliance Control Board
In white-goods appliance boards such as washing machines, dishwashers, and induction cooktops, the PIC16F18876T-I/PT acts as the main user-interface and load controller. Its 44-pin TQFP exposes enough I/O for keypads, rotary encoders, segment LCD drivers via PWM, and TRIAC phase-angle firing. The integrated comparators detect zero-cross for safe AC load switching, and CRC/SCAN memory integrity helps meet IEC 60335 functional-safety requirements. With 32 MHz core and 2KB SRAM, the chip can host state-machine UI logic, fault diagnostics, and over-the-air update bootloaders.
Được đề xuất
LED Lighting Driver
The PIC16F18876T-I/PT is a strong main controller for tunable-white and RGBW LED drivers. Its PWM channels drive high-frequency FET gate signals to a buck or boost current regulator, while the 10-bit ADC2 monitors LED string current via a sense resistor for closed-loop brightness regulation. The integrated comparators handle thermal foldback from an NTC, and the DAC outputs an analog 0-10 V dimming reference for industry-standard dimmers. With 1.8V-5.5V VDD, the chip accepts 3.3V or 5V rails and EUSART enables DMX-512 or DALI bridge applications.
Được đề xuất
Functional Safety Subsystem (FuSa)
For safety-critical subsystems targeting IEC 61508 SIL 2 or ISO 26262 ASIL A, the PIC16F18876T-I/PT ships with a Functional Safety documentation package covering the WWDT, HLT, CRC/SCAN, and ADC window-comparator peripherals. Engineers can architect redundant sensor channels, plausibility checks, and watchdog timeouts in firmware with 28KB Flash headroom for FuSa libraries. The industrial -40C to +85C operating range covers most non-automotive safety use cases, and the 32 MHz core lets complex diagnostic routines finish within tight safety-cycle budgets.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F18876T-I/PT — 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 | PIC16F18876-I/PT | PIC16F18877-I/PT | PIC16F18875-I/PT | PIC16F18876-E/PT |
|---|---|---|---|---|---|
| Package | TQFP-44 (PT), 10x10 mm | TQFP-44 (PT), 10x10 mm - same | TQFP-44 (PT), 10x10 mm - same | TQFP-44 (PT), 10x10 mm - same | TQFP-44 (PT), 10x10 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 28 KB | 28 KB | 56 KB | 14 KB | 28 KB |
| Data SRAM | 2 KB | 2 KB | 4 KB | 1 KB | 2 KB |
| Data EEPROM | 256 B | 256 B | 256 B | 256 B | 256 B |
| Maximum CPU Speed | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +125C (Extended) |
| Operating Voltage (VDD) | 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 | 1.8 V to 5.5 V |
| Functional Safety (FuSa) | Yes | Yes | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Highest-density Flash in same TQFP-44 package (vsPIC16F18875-I/PT)
- Cost-balanced memory headroom vs the higher-density PIC16F18877 (vsPIC16F18877-I/PT)
- Industrial temperature range covers most non-automotive designs (vsPIC16F18876-E/PT)
- FuSa documentation for safety-critical designs (vsPIC16F18856T-I/SSVAO)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor on each VDD pin pair of the PIC16F18876T-I/PT, as close as possible (under 2 mm trace length) to the IC. Add a bulk 4.7 uF tantalum or ceramic on the main VDD rail. For low-noise analog performance, power the ADC VDD pin from a ferrite bead-filtered analog supply, since the 10-bit ADC2 reference accuracy is sensitive to high-frequency digital switching noise from the PWM and CWG blocks.
Route the ICSP programming lines (ICSCLK = RB6, ICSDAT = RB7) directly to a 6-pin header with no series resistors unless explicitly required by the debugger, and keep them away from PWM switching traces to avoid coupling noise during in-circuit programming. The PPS-remappable I/O simplifies layout: route your EUSART, SPI, and I2C signals to whichever physical pins match your PCB, then configure PPS registers to map the peripheral function. Always leave at least one VDD/VSS pair unused as a guard ring if board area allows.
Estimated: A common pitfall is leaving the WWDT and HLT disabled in production firmware, which defeats the Functional Safety story of the PIC16F18876T-I/PT. Always enable the WWDT with a timeout shorter than your safety cycle budget and clear it from a single, well-documented task. Another common mistake is forgetting to configure unused I/O pins as outputs with logic low per the datasheet's "Unused I/O" recommendation, which can cause parasitic current draw in the microamp range and starve XLP sleep targets.
Thông tin tuân thủ
RoHS and lead-free compliance confirmed per Microchip product page. Functional Safety (FuSa) documentation package available per PIC16F18876 product family datasheet. AEC-Q100 qualification is NOT standard on the "I/PT" industrial-grade variant; automotive applications should consult Microchip AEC-Q100 qualified PIC part numbers separately.