PIC18F66K80T-I/PT - 8-bit 64KB Flash MCU w/ ECAN | Microchip
MPN: PIC18F66K80T-I/PT ✓ Hoạt độngPIC18F66K80T-I/PT Tóm tắt
An 8-bit PIC microcontroller is a CISC-style Reduced Instruction Set Computing (RISC) device that combines a CPU core, Flash program memory, SRAM data memory, EEPROM, and a rich peripheral set on a single die. PIC18 microcontrollers sit within Microchip's broader hierarchy of MCU -> microcontroller -> embedded controller -> semiconductor IC, and the K-series adds nanoWatt XLP extreme-low-power technology that enables sleep currents measured in nanoamperes.
Key features of the PIC18F66K80 family include a 12-bit ADC with up to 12 channels, a Charge Time Measurement Unit (CTMU) for capacitive touch and precise timing, an integrated ECAN module supporting CAN 2.0B, 54 digital I/O pins, and multiple serial interfaces (UART, SPI, I2C). It also integrates nanoWatt XLP technology for low-power sleep modes.
The CPU architecture is an 8-bit Harvard RISC core with hardware multiplier and 16-bit instructions, achieving 16 MIPS at 64 MHz. The ECAN peripheral implements the full CAN 2.0B protocol with hardware acceptance filters and a dedicated DMA engine that offloads message handling from the CPU.
Typical applications include automotive body and chassis ECUs, CAN-connected industrial control nodes, building automation controllers, capacitive touch user interfaces (via CTMU), and battery-powered sensor hubs. The wide 1.8-5.5 V supply range and XLP sleep modes make it attractive for always-on subsystems.
When designing with this part, observe the supply-voltage derating at maximum CPU clock: at 64 MHz the minimum VDD must remain above approximately 4.2 V per the datasheet, so dropping to a 3.3 V rail typically requires limiting FOSC to about 40 MHz. The T-suffix indicates Tape & Reel packaging and the I-suffix denotes the industrial -40C to +85C operating range.
This page synthesizes distributor pricing, pin-compatible drop-in alternatives, and practical design notes not found in the standalone Microchip datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC18F66K80T-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 PIC18F66K80T-I/PT (cùng hình factor và footprint) — khác nhau ở Timers, ADC, Core Architecture, Package, Operating Temperature.
PIC18F66K80-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F66K80-H/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F65K80T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F66K22T-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F66J55-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F6680T-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F66K80T-I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit PIC18 RISC |
| Program Memory (Flash) | 64 KB (32K x 16) |
| Data SRAM | 4 KB |
| Data EEPROM | 1 KB |
| Maximum CPU Clock | 64 MHz |
| Instruction Throughput | 16 MIPS |
| Supply Voltage (VDD) | 1.8 V to 5.5 V (4.2 V to 5.5 V at 64 MHz) |
| Digital I/O Pins | 54 |
| ADC | 12-bit, up to 12 channels |
| CAN Module | ECAN (CAN 2.0B) with DMA |
| CTMU | Charge Time Measurement Unit |
| Communication Peripherals | UART, SPI, I2C |
| Hộp | 64-pin TQFP (10x10 mm) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (industrial) |
| Packaging Form | Tape & Reel (T suffix) |
| Low-Power Technology | nanoWatt XLP |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F66K80T-I/PT
| Chân 1 | RH2/AN22 — Port H bit 2 / ADC analog input |
| Chân 2 | RH3/AN23 — Port H bit 3 / ADC analog input |
| Chân 3 | RH4/AN24/C1INC — Port H bit 4 / comparator input |
| Chân 4 | RH5/AN25/C1IND — Port H bit 5 / comparator input |
| Chân 5 | RH6/AN26/C2INC — Port H bit 6 / comparator input |
| Chân 6 | RH7/AN27/C2IND — Port H bit 7 / comparator input |
| Chân 7 | VDD — Positive supply (2.5V/3.3V/5V) |
| Chân 8 | VSS — Ground reference |
| Chân 9 | OSC1/CLKIN — External clock input / crystal oscillator pin 1 |
| Chân 10 | OSC2/CLKOUT — Crystal oscillator pin 2 / clock output |
| Chân 11 | RA0/AN0/ULPWU — Port A bit 0 / ADC ch0 / ultra-low-power wake |
| Chân 12 | RA1/AN1 — Port A bit 1 / ADC ch1 |
| Chân 13 | RA2/AN2/VREF- — Port A bit 2 / ADC VREF- |
| Chân 14 | RA3/AN3/VREF+ — Port A bit 3 / ADC VREF+ |
| Chân 15 | RA4 — Port A bit 4 |
| Chân 16 | RA5/AN4 — Port A bit 5 / ADC ch4 |
| Chân 17 | RA6 — Port A bit 6 |
| Chân 18 | RA7 — Port A bit 7 |
| Chân 19 | VSS — Ground |
| Chân 20 | VDD — Positive supply |
| Chân 21 | RB0/AN8/INT0 — Port B bit 0 / ADC ch8 / external interrupt |
| Chân 22 | RB1/AN9/INT1 — Port B bit 1 / ADC ch9 / external interrupt |
| Chân 23 | RB2/AN10/INT2 — Port B bit 2 / ADC ch10 / external interrupt |
| Chân 24 | RB3/AN11/INT3 — Port B bit 3 / ADC ch11 / external interrupt |
| Chân 25 | RB4/AN12 — Port B bit 4 / ADC ch12 |
| Chân 26 | RB5/AN13 — Port B bit 5 / ADC ch13 |
| Chân 27 | RB6/AN14/PGC — Port B bit 6 / ICD clock |
| Chân 28 | RB7/AN15/PGD — Port B bit 7 / ICD data |
| Chân 29 | RC0 — Port C bit 0 |
| Chân 30 | RC1 — Port C bit 1 |
| Chân 31 | RC2 — Port C bit 2 |
| Chân 32 | RC3/SCL — Port C bit 3 / I2C clock |
| Chân 33 | RC4/SDA — Port C bit 4 / I2C data |
| Chân 34 | RC5 — Port C bit 5 |
| Chân 35 | RC6 — Port C bit 6 |
| Chân 36 | RC7 — Port C bit 7 |
| Chân 37 | RE0 — Port E bit 0 |
| Chân 38 | RE1 — Port E bit 1 |
| Chân 39 | RE2 — Port E bit 2 |
| Chân 40 | RE3 — Port E bit 3 |
| Chân 41 | VDD — Positive supply |
| Chân 42 | VSS — Ground |
| Chân 43 | RF0 — Port F bit 0 |
| Chân 44 | RF1 — Port F bit 1 |
| Chân 45 | RF2 — Port F bit 2 |
| Chân 46 | RF3 — Port F bit 3 |
| Chân 47 | RF4 — Port F bit 4 |
| Chân 48 | RF5 — Port F bit 5 |
| Chân 49 | RF6 — Port F bit 6 |
| Chân 50 | RF7 — Port F bit 7 |
| Chân 51 | RG0 — Port G bit 0 |
| Chân 52 | RG1 — Port G bit 1 |
| Chân 53 | RG2 — Port G bit 2 |
| Chân 54 | RG3 — Port G bit 3 |
| Chân 55 | RG4 — Port G bit 4 |
| Chân 56 | MCLR/RE4 — Master clear (reset) / Port E bit 4 |
| Chân 57 | RH0/AN20 — Port H bit 0 / ADC ch20 |
| Chân 58 | RH1/AN21 — Port H bit 1 / ADC ch21 |
| Chân 59 | AVSS — Analog ground reference |
| Chân 60 | AVDD — Analog supply input |
| Chân 61 | C1IN+/C2IN+ — Comparator non-inverting inputs |
| Chân 62 | C1OUT/C2OUT — Comparator outputs |
| Chân 63 | TX2/CK2 — ECAN transmit / EUSART2 clock |
| Chân 64 | RX2/DT2 — ECAN receive / EUSART2 data |
Ứng dụng tiêu biểu
PIC18F66K80T-I/PT phù hợp cho 6 Áp dụngs: Automotive Body and Chassis ECUs, Industrial CAN Control Nodes, Building Automation Controllers, Capacitive Touch User Interfaces, Battery-Powered Sensor Hubs, USB-Connected Embedded Peripherals.
Automotive Body and Chassis ECUs
The PIC18F66K80T-I/PT is well suited for automotive body and chassis ECUs because it integrates a full CAN 2.0B ECAN controller with hardware acceptance filters and a dedicated DMA engine. With 64 KB Flash, 4 KB RAM, and 54 I/O, it can handle multi-node body control tasks such as lighting, mirror control, and seat modules. The 1.8 V to 5.5 V supply range tolerates 12 V battery transients when paired with a front-end regulator. For AEC-Q100 Grade 1 designs, the PIC18F66K80-H/PT variant extends operation to +125C.
Được đề xuất
Industrial CAN Control Nodes
In industrial CAN networks (CANopen, DeviceNet, J1939), the PIC18F66K80T-I/PT provides an integrated ECAN peripheral, 12-bit ADC, and 16 MIPS throughput for closed-loop control at update rates above 1 kHz. The CTMU allows precise time-of-flight measurements for distance or level sensing. With nanoWatt XLP technology, sleep currents below 1 uA enable battery-backed sensor hubs that wake on CAN bus activity.
Được đề xuất
Building Automation Controllers
Building automation subsystems such as HVAC controllers, lighting ballasts, and access-control panels benefit from the PIC18F66K80T-I/PT's wide 1.8 V to 5.5 V supply range, which simplifies integration with both 24 V HVAC rails and 3.3 V logic. The 12-bit ADC supports up to 12 channels for temperature, humidity, and pressure sensing, while ECAN connects to a building backbone bus. The TQFP-64 package provides ample I/O for keypad scanning, LCD drive, and relay outputs.
Được đề xuất
Capacitive Touch User Interfaces
The PIC18F66K80T-I/PT's Charge Time Measurement Unit (CTMU) provides a hardware-based constant-current source that enables high-resolution capacitive touch sensing without external analog components. With up to 54 I/O pins and the CTMU, the MCU can scan 30+ touch electrodes directly. The 16 MIPS throughput handles touch decoding, gesture recognition, and host communication (UART/SPI) in a single device, reducing BOM cost in HMI panels.
Được đề xuất
Battery-Powered Sensor Hubs
For wireless sensor hubs running from a 3.6 V Li-SOCl2 primary cell, the PIC18F66K80T-I/PT delivers nanoWatt XLP sleep currents below 1 uA, allowing multi-year battery life when wake intervals are sparse. At 3.3 V the maximum CPU clock drops to about 40 MHz, but periodic sensor reads plus UART/SPI output to a connected radio remain well within budget. The wide -40C to +85C industrial temperature range covers outdoor and underground deployments.
Được đề xuất
USB-Connected Embedded Peripherals
Although the PIC18F66K80T-I/PT lacks an integrated USB peripheral, its UART and SPI interfaces pair cleanly with external USB-to-UART bridges (MCP2200, MCP2221) for PC connectivity. Designers can re-purpose 54 I/O for keypad, LCD, and motor control while leaving a transparent UART/USB debug channel. The 16 MIPS throughput keeps CDC-class serial latency low even when the main loop drives PWM outputs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F66K80T-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 | PIC18F66K80-I/PT | PIC18F66K80-H/PT | PIC18F65K80T-I/PT | PIC18F66K22T-I/PT | PIC18F66J55-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (10x10 mm) | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same | TQFP-64 (10x10 mm) - same |
| Flash Program Memory | 64 KB | 64 KB | 64 KB | 32 KB | 64 KB | 96 KB |
| Data SRAM | 4 KB | 4 KB | 4 KB | 2 KB | 4 KB | 8 KB |
| ECAN Module | Yes (CAN 2.0B) | Yes | Yes | Yes | No | No (ECAN absent on PIC18J) |
| Maximum CPU Clock | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) | 48 MHz (12 MIPS) |
| Supply Voltage Range | 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 | 2.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +125C (AEC-Q100) | -40C to +85C | -40C to +85C | -40C to +85C |
| Price (1 pc, USD approx.) | $7.95 | ~$7.95 | ~$9.50 | ~$6.50 | ~$6.20 | ~$7.10 |
Bảo phân biệt quan trọng
- Integrated ECAN controller eliminates external CAN silicon (vsPIC18F66K22T-I/PT)
- Industry-leading 16 MIPS throughput in 8-bit class (vsPIC18F66J55-I/PT)
- CTMU peripheral enables hardware capacitive touch without external analog ICs (vsPIC18F45K80T-I/ML)
Ghi chú thiết kế
Estimated: At a 3.3 V supply the maximum CPU clock drops from 64 MHz to about 40 MHz per the family datasheet. Designers using a 3.3 V rail should set the OSCCON register to FOSC = 40 MHz (16 MHz HFINTOSC with 4x PLL or 10 MHz EC mode with 4x PLL) to remain within the voltage-frequency derating curve. Exceeding the limit will cause unstable Flash reads and ADC inaccuracies.
Place the AVDD and VDD pins with at least a 0.1 uF ceramic decoupling capacitor within 3 mm of each pin, and add a 10 uF bulk tantalum or ceramic on the AVDD rail. For mixed-signal designs, isolate AVDD with a ferrite bead from VDD to reduce ADC noise coupling. The TQFP-64 exposed thermal pad (where present) should be soldered to a 1 square inch copper pour for thermal dissipation.
Ensure PGC/PGD lines (RB6/RB7) are not loaded with more than 25 pF during in-circuit programming; if the application requires those pins as outputs with heavy capacitance, add series 4.7 kohm resistors for in-circuit debug compatibility. Also remember that the T-suffix changes only the carrier format (Tape & Reel) - it does not change operating temperature grade; for -40C to +125C, select the H-suffix or E-suffix variants explicitly.
The ECAN module requires a dedicated MCP2551 (or equivalent) high-speed CAN transceiver between the ECAN TX2/RX2 pins and the bus. Keep the transceiver-to-MCU traces under 50 mm and route them over a continuous ground plane to meet IEC 61000-4-2 ESD and ISO 11898 EMC requirements. Place a 60-ohm termination resistor at each end of the CAN bus, not at the MCU.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Not AEC-Q100 qualified in the standard grade - choose PIC18F66K80-H/PT for AEC-Q100 Grade 1 automotive qualification.
