PIC16F18876-E/PT - 28KB Flash 8-bit XLP MCU | Microchip
MPN: PIC16F18876-E/PT ✓ Hoạt độngPIC16F18876-E/PT Tóm tắt
An 8-bit microcontroller (MCU) is a microprocessor integrated with program memory (Flash), data memory (RAM), non-volatile storage (EEPROM), and peripherals on a single silicon die. PIC16F1xxx parts are mid-range 8-bit MCUs from Microchip, sitting between baseline PIC10/12 and enhanced PIC18 families, and they are widely used for embedded control where deterministic behavior and low power matter. The XLP sub-family specifically targets battery-powered and energy-harvesting applications, while Functional Safety (FuSa) variants are designed for IEC 61508 / ISO 26262-capable systems. In the broader taxonomy, the PIC16F18876 sits within: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC.
Key differentiating features of the PIC16F18876 include 28 KB self-programmable Flash with device ID area, 16-level hardware stack, and the ADCC computation engine that automates averaging, filtering, oversampling and threshold comparisons - reducing CPU overhead for sensor acquisition. Hardware limit timer (HLT) and Complementary Waveform Generator (CWG) provide advanced motor-control and power-conversion support without software intervention. The 256-byte EEPROM supports endurance of 100k write cycles typical, and the device offers memory partitioning for bootloader operation.
Typical applications include industrial sensor transmitters, low-power IoT edge nodes, automotive body and lighting controllers (Functional Safety use cases), home appliance user-interface boards, and battery-powered measurement instruments. The wide 2.3V-5.5V supply range and XLP sleep current down to nanoamp levels make it well suited to multi-year battery life products. The 44-TQFP package offers ample I/O for human-machine-interface (HMI) panels and multi-signal acquisition designs.
When designing with this part, reserve adequate decoupling (100 nF + 1 uF) near each VDD pin, and follow Microchip AN1881 layout guidelines for ADCC analog performance. The MCLR pin should be pulled high through a 10 kohm resistor unless a programming/debug header is required. For power-critical designs, use the XLP sleep modes rather than polling loops to maximize battery life. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16F18876-E/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 PIC16F18876-E/PT (cùng hình factor và footprint) — khác nhau ở ADC, Package, Family, Core Architecture, Program Memory (Flash).
PIC16F18875-E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18877-E/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18876-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18856-E/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F18857-E/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F18876-E/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F18876-E/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 (8-bit enhanced mid-range) |
| Family | PIC16F1885X / 7X (XLP, Functional Safety) |
| Program Memory (Flash) | 28 KB (16K x 14 words) |
| Data RAM | 2 KB |
| Data EEPROM | 256 bytes |
| CPU Speed (max) | 32 MHz |
| Supply Voltage (VDD) | 2.3 V to 5.5 V |
| Operating Temperature (E suffix) | -40 C to +125 C |
| I/O Pins | Up to 36 |
| Hộp | 44-pin TQFP (10x10 mm), -PT suffix |
| ADC | 12-bit ADCC with computation, up to 43 channels |
| Communication Interfaces | UART (LIN-capable), SPI, I2C (SMBus-compatible) |
| Core-Independent Peripherals | CWG, SMT, HLT, CRC/SCAN, PWM |
| Trạng thái RoHS | Compliant |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân PIC16F18876-E/PT
| Chân 1 | RA5 — Port A bit 5 / analog input |
| Chân 2 | RA4 — Port A bit 4 / analog input |
| Chân 3 | RA3 — Port A bit 3 / analog input / Vref+ |
| Chân 4 | RA2 — Port A bit 2 / analog input / Vref- |
| Chân 5 | RA1 — Port A bit 1 / analog input |
| Chân 6 | RA0 — Port A bit 0 / analog input |
| Chân 7 | VSS — Ground reference |
| Chân 8 | RA7 — Port A bit 7 / analog input |
| Chân 9 | RA6 — Port A bit 6 / analog input |
| Chân 10 | RC0 — Port C bit 0 |
| Chân 11 | RC1 — Port C bit 1 |
| Chân 12 | RC2 — Port C bit 2 |
| Chân 13 | RC3 — Port C bit 3 / SCL |
| Chân 14 | RC4 — Port C bit 4 / SDA |
| Chân 15 | RC5 — Port C bit 5 |
| Chân 16 | RC6 — Port C bit 6 / TX |
| Chân 17 | RC7 — Port C bit 7 / RX |
| Chân 18 | VSS — Ground reference |
| Chân 19 | VDD — Positive supply voltage |
| Chân 20 | RB0 — Port B bit 0 / AN12 |
| Chân 21 | RB1 — Port B bit 1 / AN10 |
| Chân 22 | RB2 — Port B bit 2 / AN8 |
| Chân 23 | RB3 — Port B bit 3 / AN9 |
| Chân 24 | RB4 — Port B bit 4 / AN11 |
| Chân 25 | RB5 — Port B bit 5 / AN13 |
| Chân 26 | RB6 — Port B bit 6 / ICSPCLK |
| Chân 27 | RB7 — Port B bit 7 / ICSPDAT |
| Chân 28 | RD0 — Port D bit 0 |
| Chân 29 | RD1 — Port D bit 1 |
| Chân 30 | RD2 — Port D bit 2 |
| Chân 31 | RD3 — Port D bit 3 |
| Chân 32 | RD4 — Port D bit 4 |
| Chân 33 | RD5 — Port D bit 5 |
| Chân 34 | RD6 — Port D bit 6 |
| Chân 35 | RD7 — Port D bit 7 |
| Chân 36 | RE0 — Port E bit 0 |
| Chân 37 | RE1 — Port E bit 1 |
| Chân 38 | RE2 — Port E bit 2 |
| Chân 39 | RE3 — Port E bit 3 / MCLR |
| Chân 40 | VSS — Ground reference |
| Chân 41 | RF0 — Port F bit 0 |
| Chân 42 | RF1 — Port F bit 1 |
| Chân 43 | RF2 — Port F bit 2 |
| Chân 44 | VDD — Positive supply voltage |
Ứng dụng tiêu biểu
PIC16F18876-E/PT phù hợp cho 6 Áp dụngs: Industrial Sensor Transmitter, Battery-Powered IoT Edge Node, Automotive Body and Lighting Controller, Home Appliance User Interface Board, Low-Power Measurement Instrument, Functional Safety Subsystem Controller.
Industrial Sensor Transmitter
The PIC16F18876-E/PT is an excellent fit for industrial 4-20 mA loop-powered sensor transmitters, where its 12-bit ADCC with computation and 43 analog input channels handle ratiometric bridge or thermocouple conditioning directly. The XLP sleep mode drops current to nanoamp levels between measurements, extending battery life on wireless HART nodes to multi-year spans. The 28 KB Flash accommodates protocol stacks (HART, IO-Link, Modbus RTU) plus calibration tables, while the 256-byte EEPROM stores sensor trim data across -40C to +125C. Placement is straightforward: ADCC inputs to bridge sensors, UART to the loop transceiver, and the hardware limit timer (HLT) guarding the loop-current threshold.
Được đề xuất
Battery-Powered IoT Edge Node
For battery-powered IoT edge devices, the PIC16F18876-E/PT combines XLP sleep currents in the nanoamp range with a 2.3V-5.5V supply window that accepts single-cell Li-Ion or 2x AA chemistries without boost converters. The 32 MHz CPU executes sensor-fusion algorithms in tens of milliseconds before returning to sleep, and the SMT (Signal Measurement Timer) captures pulse-based sensor outputs without waking the CPU. With 28 KB Flash, designers can embed MQTT-SN or LoRaWAN application layers. The 44-TQFP package exposes enough I/O for multi-sensor boards (temperature, humidity, motion) plus a low-power radio interface via SPI.
Được đề xuất
Automotive Body and Lighting Controller
The PIC16F18876-E/PT is qualified for automotive body-electronics use cases including interior lighting, mirror control, seat-position memories, and HVAC dampers, thanks to its extended -40C to +125C temperature grade and LIN-capable UART. The CWG (Complementary Waveform Generator) drives MOSFET half-bridges for LED dimming and DC motor control with hardware dead-band, eliminating CPU jitter. The Functional Safety documentation (FMEDA, safety manual) supports IEC 61508 / ISO 26262 workflows for ASIL-classified subsystems. The 256-byte EEPROM retains user settings through key-cycle and battery-disconnect events, while 36 I/O accommodates multi-channel lamp or motor drivers.
Được đề xuất
Home Appliance User Interface Board
In washing machines, dishwashers, ovens and microwave user-interface boards, the PIC16F18876-E/PT drives segmented LCD or LED displays, capacitive touch keys, and rotary encoder inputs from a single device. The CWG and PWM channels can simultaneously backlight an LCD, fade an LED bar and buzz a piezo sounder without CPU intervention. With 36 I/O, designers can connect 7-segment displays, key matrices and indicator LEDs without external I/O expanders. IEC 60730 Class B safety features (windowed WWDT, hardware CRC/SCAN, ADCC limit check) simplify household-appliance compliance certification across the 2.3V-5.5V supply range.
Được đề xuất
Low-Power Measurement Instrument
Handheld multimeters, insulation testers and portable environmental monitors benefit from the PIC16F18876-E/PT's combination of 12-bit ADCC, XLP sleep modes and 32 MHz burst compute for measurement algorithms. The ADCC computation modes perform hardware averaging and threshold checks, freeing the CPU to focus on display updates and serial protocol framing. The 28 KB Flash holds lookup tables for sensor linearization (RTD, thermistor), and 2 KB RAM buffers instantaneous readings for min/max/avg processing. With -40C to +125C operation, the device functions across outdoor and industrial test environments on coin-cell or Li-Ion power.
Được đề xuất
Functional Safety Subsystem Controller
For safety-critical subsystems (industrial motor drives, burner controls, appliance Class B), the PIC16F18876-E/PT provides a FuSa-capable supervisory MCU that monitors a primary controller via UART/SPI and asserts safe-state outputs on fault. Hardware CRC/SCAN performs non-intrusive background memory verification, while the windowed watchdog timer (WWDT) detects clock drift or stalled firmware. The 256-byte EEPROM retains fault logs for post-event diagnostics. The 2.3V-5.5V supply, 32 MHz speed and 28 KB Flash suit mid-complexity safety functions where a certified C2000 or Cortex-M would be overkill.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F18876-E/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 | PIC16F18875-E/PT | PIC16F18877-E/PT | PIC16F18876-I/PT | PIC16F18856-E/PT | PIC16F18857-E/PT | PIC16F18876-E/P |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) | 40-TQFP | 40-TQFP | 40-pin PDIP (DIP-40) |
| Flash Memory | 28 KB (16K x 14) | 14 KB | 56 KB | 28 KB | 28 KB | 56 KB | 28 KB |
| RAM | 2 KB | 1 KB | 4 KB | 2 KB | 2 KB | 4 KB | 2 KB |
| EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| CPU Speed (max) | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +125C (E grade) | -40C to +125C (E grade) |
| Functional Safety (FuSa) | Yes (IEC 61508 / IEC 60730) | Yes (IEC 61508 / IEC 60730) | Yes (IEC 61508 / IEC 60730) | Yes (IEC 61508 / IEC 60730) | Yes (IEC 61508 / IEC 60730) | Yes (IEC 61508 / IEC 60730) | Yes (IEC 61508 / IEC 60730) |
Bảo phân biệt quan trọng
- Pin-compatible memory scaling on same 44-TQFP/PT footprint (vsPIC16F18875-E/PT)
- Extended -40C to +125C temperature grade for harsh environments (vsPIC16F18876-I/PT)
- Functional Safety (FuSa) documentation for IEC 61508/60730 (vsPIC16F18876-E/P (DIP-40))
Ghi chú thiết kế
Decouple each VDD pin with a 100 nF ceramic capacitor placed within 3 mm of the pin, plus a single 1 uF to 10 uF bulk capacitor on the board. For battery-powered designs using XLP sleep modes, place the 100 nF caps on both VDD pins (TQFP-44 has two VDD pins at 19 and 44) to ensure clean wake-up transitions. Do not place inductive traces (PWM, switching nodes) under the MCU package to avoid injecting switching noise into the analog references.
Follow Microchip's AN1881 PCB layout guidelines for the TQFP-44 footprint: use a 0.8 mm pitch land pattern with 0.4 mm-wide pads and a center thermal pad not required for this package. Route the ICSPDAT and ICSPCLK lines (RB6/RB7) away from high-current traces to prevent programming glitches. Provide a ground plane on layer 2 with vias stitching around the perimeter at 5 mm spacing for EMI suppression.
The MCLR pin (RE3) must NOT be left floating - tie it to VDD through a 10 kohm pull-up resistor, or use the internal MCLR configuration only if external reset is not required. For in-circuit programming, populate an ICSP header with all five signals (VDD, VSS, ICSPDAT, ICSPCLK, MCLR). When migrating from PIC16F18876 to PIC16F18877, verify linker scripts accommodate 56 KB Flash; otherwise undefined symbol errors will surface at link time. Configuration bits must be explicitly set; do not rely on defaults.
For ADCC accuracy, dedicate an analog ground (AGND) island tied to digital ground at a single point near the MCU VSS pin. Bypass AVREF+/AVREF- with 100 nF ceramic capacitors when using external voltage references. Sample times must be configured per source impedance - 1 us minimum for 10 kohm sources, longer for higher-impedance sensors like thermistors. Avoid routing digital signals (PWM, UART) adjacent to analog inputs to prevent digital-coupling noise from contaminating ADC readings.
Thông tin tuân thủ
RoHS compliant per Microchip product page; not AEC-Q100 qualified (functional safety FuSa documentation supports IEC 61508 / IEC 60730 Class B but not automotive AEC-Q100).
