PIC18F66K80T-I/PT - 8-bit 64KB Flash MCU w/ ECAN | Microchip
MPN： PIC18F66K80T-I/PT ✓ 啟用中PIC18F66K80T-I/PT 概覽
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.
直接替換替代品，適用於 PIC18F66K80T-I/PT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC18F66K80T-I/PT （相同外形與佔位） — 差異在於 Timers, ADC, Core Architecture, Package, Operating Temperature.
PIC18F66K80-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC18F66K80-H/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC18F65K80T-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC18F66K22T-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC18F66J55-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18F6680T-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18F66K80T-I/PT 最大額定值與電氣特性
| 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 |
| 封裝 | 64-pin TQFP (10x10 mm) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +85C (industrial) |
| Packaging Form | Tape & Reel (T suffix) |
| Low-Power Technology | nanoWatt XLP |
| RoHS 狀態 | Compliant |
PIC18F66K80T-I/PT 腳位配置
| 腳位 1 | RH2/AN22 — Port H bit 2 / ADC analog input |
| 腳位 2 | RH3/AN23 — Port H bit 3 / ADC analog input |
| 腳位 3 | RH4/AN24/C1INC — Port H bit 4 / comparator input |
| 腳位 4 | RH5/AN25/C1IND — Port H bit 5 / comparator input |
| 腳位 5 | RH6/AN26/C2INC — Port H bit 6 / comparator input |
| 腳位 6 | RH7/AN27/C2IND — Port H bit 7 / comparator input |
| 腳位 7 | VDD — Positive supply (2.5V/3.3V/5V) |
| 腳位 8 | VSS — Ground reference |
| 腳位 9 | OSC1/CLKIN — External clock input / crystal oscillator pin 1 |
| 腳位 10 | OSC2/CLKOUT — Crystal oscillator pin 2 / clock output |
| 腳位 11 | RA0/AN0/ULPWU — Port A bit 0 / ADC ch0 / ultra-low-power wake |
| 腳位 12 | RA1/AN1 — Port A bit 1 / ADC ch1 |
| 腳位 13 | RA2/AN2/VREF- — Port A bit 2 / ADC VREF- |
| 腳位 14 | RA3/AN3/VREF+ — Port A bit 3 / ADC VREF+ |
| 腳位 15 | RA4 — Port A bit 4 |
| 腳位 16 | RA5/AN4 — Port A bit 5 / ADC ch4 |
| 腳位 17 | RA6 — Port A bit 6 |
| 腳位 18 | RA7 — Port A bit 7 |
| 腳位 19 | VSS — Ground |
| 腳位 20 | VDD — Positive supply |
| 腳位 21 | RB0/AN8/INT0 — Port B bit 0 / ADC ch8 / external interrupt |
| 腳位 22 | RB1/AN9/INT1 — Port B bit 1 / ADC ch9 / external interrupt |
| 腳位 23 | RB2/AN10/INT2 — Port B bit 2 / ADC ch10 / external interrupt |
| 腳位 24 | RB3/AN11/INT3 — Port B bit 3 / ADC ch11 / external interrupt |
| 腳位 25 | RB4/AN12 — Port B bit 4 / ADC ch12 |
| 腳位 26 | RB5/AN13 — Port B bit 5 / ADC ch13 |
| 腳位 27 | RB6/AN14/PGC — Port B bit 6 / ICD clock |
| 腳位 28 | RB7/AN15/PGD — Port B bit 7 / ICD data |
| 腳位 29 | RC0 — Port C bit 0 |
| 腳位 30 | RC1 — Port C bit 1 |
| 腳位 31 | RC2 — Port C bit 2 |
| 腳位 32 | RC3/SCL — Port C bit 3 / I2C clock |
| 腳位 33 | RC4/SDA — Port C bit 4 / I2C data |
| 腳位 34 | RC5 — Port C bit 5 |
| 腳位 35 | RC6 — Port C bit 6 |
| 腳位 36 | RC7 — Port C bit 7 |
| 腳位 37 | RE0 — Port E bit 0 |
| 腳位 38 | RE1 — Port E bit 1 |
| 腳位 39 | RE2 — Port E bit 2 |
| 腳位 40 | RE3 — Port E bit 3 |
| 腳位 41 | VDD — Positive supply |
| 腳位 42 | VSS — Ground |
| 腳位 43 | RF0 — Port F bit 0 |
| 腳位 44 | RF1 — Port F bit 1 |
| 腳位 45 | RF2 — Port F bit 2 |
| 腳位 46 | RF3 — Port F bit 3 |
| 腳位 47 | RF4 — Port F bit 4 |
| 腳位 48 | RF5 — Port F bit 5 |
| 腳位 49 | RF6 — Port F bit 6 |
| 腳位 50 | RF7 — Port F bit 7 |
| 腳位 51 | RG0 — Port G bit 0 |
| 腳位 52 | RG1 — Port G bit 1 |
| 腳位 53 | RG2 — Port G bit 2 |
| 腳位 54 | RG3 — Port G bit 3 |
| 腳位 55 | RG4 — Port G bit 4 |
| 腳位 56 | MCLR/RE4 — Master clear (reset) / Port E bit 4 |
| 腳位 57 | RH0/AN20 — Port H bit 0 / ADC ch20 |
| 腳位 58 | RH1/AN21 — Port H bit 1 / ADC ch21 |
| 腳位 59 | AVSS — Analog ground reference |
| 腳位 60 | AVDD — Analog supply input |
| 腳位 61 | C1IN+/C2IN+ — Comparator non-inverting inputs |
| 腳位 62 | C1OUT/C2OUT — Comparator outputs |
| 腳位 63 | TX2/CK2 — ECAN transmit / EUSART2 clock |
| 腳位 64 | RX2/DT2 — ECAN receive / EUSART2 data |
典型應用
PIC18F66K80T-I/PT 適用於 6 應用s: 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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
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推薦產品摘要
工程參考資料，適用於 PIC18F66K80T-I/PT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | 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 |
主要差異化特點
- Integrated ECAN controller eliminates external CAN silicon (對比PIC18F66K22T-I/PT)
- Industry-leading 16 MIPS throughput in 8-bit class (對比PIC18F66J55-I/PT)
- CTMU peripheral enables hardware capacitive touch without external analog ICs (對比PIC18F45K80T-I/ML)
設計說明
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.
合規資訊
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.
