PIC18LF2682-I/SP - 8-bit MCU, 80KB Flash, ECAN, 28-SPDIP | Microchip
MPN: PIC18LF2682-I/SP ✓ פעילPIC18LF2682-I/SP סקירה
What is an 8-bit PIC18 microcontroller? It is a member of Microchip's PIC18 family of Harvard-architecture microcontrollers, positioned in the hierarchy as PIC18 -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. PIC18F/LF parts combine a RISC instruction set, nanoWatt Technology power management, and rich peripheral integration (CAN, ADC, PWM, USART, SPI, I2C) into a single chip, replacing discrete logic in embedded applications. The 'F' suffix denotes flash program memory and the 'L' in 'LF' denotes the low-voltage / wide-Vdd variant. The '2682' family specifically targets ECAN-enabled industrial and automotive networking.
Key features include 25 I/O pins, two enhanced USART modules, one MSSP (SPI/I2C), one ECAN module, one 10-bit ADC with up to 11 input channels, two CCP/ECCP modules, and nanoWatt power management with multiple idle and sleep modes. The 28-pin SPDIP package offers through-hole mounting for prototyping, breadboarding, and industrial designs where through-hole robustness is preferred over surface-mount. The industrial temperature range of -40C to +85C supports harsh-environment deployment.
Architecturally, the PIC18LF2682 uses a 16-bit instruction word with 8-bit data path, providing orthogonal addressing and a hardware multiplier for 8x8 single-cycle operations. The ECAN module implements CAN 2.0B active with 32 acceptance filters and eight acceptance mask registers, supporting bit rates up to 1 Mbps for high-speed CAN networks. nanoWatt Technology reduces quiescent current to below 100 nA in sleep mode, enabling battery-backed industrial sensors.
Typical applications include CAN node interfaces in industrial automation, automotive body and chassis ECUs, building automation gateways, HVAC controllers, sensor hubs with local processing, and CAN-based distributed I/O modules. The 28-pin SPDIP package is also favored for educational boards and engineering prototypes.
When designing with this part, note that the LF variant supports 2.0V to 5.5V supply while ECAN requires a minimum of 4.2V. Plan decoupling with 100 nF ceramic close to VDD and a 10 uF bulk capacitor at the supply rail. Use ICD/ICSP headers for in-circuit debugging with Microchip's MPLAB X IDE and PICkit 3/4 or ICD 4 programmers.
This page synthesizes distributor pricing, drop-in PIC18LF2682 alternatives, and practical design notes not found in the manufacturer datasheet alone.
חלופות תחליף ישיר עבור PIC18LF2682-I/SP — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC18LF2682-I/SP (אותו גורם צורה וטביעת רגל) — שונים ב Operating Temperature, Package, Program Memory (Flash), I/O Pins, ADC.
PIC18F2682-I/SP
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18LF2685-I/SP
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18F2685-I/SP
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
PIC18LF2580-I/SP
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18LF2680-I/SP
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC18LF2682-I/SP דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | PIC18, 8-bit RISC, Harvard |
| Program Memory (Flash) | 80 KB |
| Data Memory (SRAM) | 3 KB |
| Data EEPROM | 1 KB |
| Maximum CPU Speed | 40 MHz (10 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 5.5 V (ECAN 4.2 V to 5.5 V) |
| I/O Pins | 25 |
| A/D Converter | 10-bit, up to 11 channels |
| ECAN Module | CAN 2.0B active, 32 filters, 8 masks |
| USART | 2x Enhanced USART |
| MSSP (SPI/I2C) | 1x |
| CCP / ECCP Modules | 2x (1 ECCP) |
| Timers | 1x 8-bit, 3x 16-bit |
| מארז | SPDIP-28 (28-pin Skinny Plastic DIP, through-hole) |
| טמפרטורת פעולה | -40 C to +85 C (Industrial) |
| nanoWatt Technology | Yes (multiple idle/sleep modes, <100 nA sleep) |
| ICSP / ICD | Yes (2-wire In-Circuit Serial Programming) |
| סוג הרכבה | Through-Hole |
תצורת פינים של PIC18LF2682-I/SP
| פין 1 | MCLR/RE3 — Master Clear (reset) input or digital input RE3 |
| פין 2 | RA0/AN0 — PORTA bit 0 / analog input AN0 |
| פין 3 | RA1/AN1 — PORTA bit 1 / analog input AN1 |
| פין 4 | RA2/AN2/VREF- — PORTA bit 2 / AN2 / negative voltage reference |
| פין 5 | RA3/AN3/VREF+ — PORTA bit 3 / AN3 / positive voltage reference |
| פין 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| פין 7 | RA5/AN4/SS — PORTA bit 5 / AN4 / SPI slave select |
| פין 8 | OSC1/RA7 — Crystal oscillator input / PORTA bit 7 |
| פין 9 | OSC2/RA6 — Crystal oscillator output / PORTA bit 6 |
| פין 10 | RC0/T1OSO — PORTC bit 0 / Timer1 oscillator output |
| פין 11 | RC1/T1OSI — PORTC bit 1 / Timer1 oscillator input |
| פין 12 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| פין 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| פין 14 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| פין 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| פין 16 | RC6/TX/CK — PORTC bit 6 / USART TX / clock |
| פין 17 | RC7/RX/DT — PORTC bit 7 / USART RX / data |
| פין 18 | RB0/AN12 — PORTB bit 0 / analog input AN12 |
| פין 19 | RB1/AN10 — PORTB bit 1 / analog input AN10 |
| פין 20 | RB2/AN8 — PORTB bit 2 / analog input AN8 |
| פין 21 | RB3/AN9 — PORTB bit 3 / analog input AN9 |
| פין 22 | RB4 — PORTB bit 4 |
| פין 23 | RB5 — PORTB bit 5 |
| פין 24 | RB6/PGC — PORTB bit 6 / ICSP clock |
| פין 25 | RB7/PGD — PORTB bit 7 / ICSP data |
| פין 26 | VSS — Ground reference |
| פין 27 | VDD — Positive supply voltage |
| פין 28 | C1TX/RC8 — ECAN TX (Note: pin function varies by specific 28-pin variant; verify against datasheet) |
יישומים טיפוסיים
PIC18LF2682-I/SP מתאים עבור 6 יישוםs: Industrial CAN Node Interface, Automotive Body and Chassis ECU, Building Automation Gateway, Sensor Hub with Local Processing, HVAC Variable Air Volume Controller, Educational and Prototyping Platform.
Industrial CAN Node Interface
The PIC18LF2682-I/SP is purpose-built for slave nodes on CANopen or DeviceNet networks in industrial automation. Its ECAN module supports CAN 2.0B active with 32 acceptance filters, enabling selective message handling without CPU overhead, while the 80 KB flash accommodates CANopen CiA 401/402 stacks plus application logic. The 10-bit ADC samples analog sensor inputs at up to 30 ksps, and the 5 V supply matches standard industrial backplanes. Designers place an MCP2551 or TJA1050 CAN transceiver on the bus side and use the ECAN TX/RX pins (C1TX, C1RX) on the PIC18LF2682 directly. nanoWatt Technology with sub-100 nA sleep extends battery-backed sensor node lifetime.
מומלץ
Automotive Body and Chassis ECU
Body control modules, HVAC controllers, mirror controllers, and lighting ECUs in automotive networks commonly use the PIC18LF2682-I/SP. Its industrial -40 C to +85 C temperature range plus ECAN 2.0B support make it suitable for non-safety-critical chassis domains. The 28-pin SPDIP footprint fits legacy through-hole automotive PCB designs, while 25 I/O pins drive relays, MOSFET gates, and LED arrays. The 10-bit ADC reads thermistor and potentiometer inputs, and ECCP generates PWM for motor speed control. nanoWatt sleep modes quiesce the ECU to <100 nA when the vehicle is parked, preserving battery charge over weeks of idle.
מומלץ
Building Automation Gateway
BACnet, LonWorks, and proprietary HVAC networks often use CAN as the fieldbus for distributed damper and VAV box controllers. The PIC18LF2682-I/SP runs the CAN stack plus BACnet MS/TP or vendor-specific protocols at 40 MHz, with 3 KB SRAM holding both stacks and per-device configuration. The USART modules support RS-485 or RS-232 trunks for commissioning laptops. Its 2.0 V to 5.5 V supply flexibility simplifies designs that must accept either 3.3 V or 5 V power over Ethernet or 24 V AC wall adapters with onboard regulation.
מומלץ
Sensor Hub with Local Processing
Sensor hubs that aggregate analog inputs from thermocouples, RTDs, strain gauges, or bridge sensors benefit from the PIC18LF2682-I/SP's 10-bit ADC with up to 11 channels, ECAN for networked data forwarding, and 80 KB flash for linearization and digital-filter algorithms. The MCU samples inputs, applies calibration constants stored in 1 KB EEPROM, applies moving-average or Kalman filtering in software, and broadcasts processed values on CAN. nanoWatt Technology permits battery-backed operation for remote wireless-bridge sensor nodes transmitting on periodic CAN wake-up events.
מומלץ
HVAC Variable Air Volume Controller
VAV box controllers regulate airflow via damper actuators in commercial HVAC systems and frequently communicate over CAN or BACnet. The PIC18LF2682-I/SP's ECCP module generates PWM to drive the damper motor while the ADC reads differential pressure across the airflow sensor. ECAN enables coordination with the building automation controller, and the 28-pin SPDIP footprint simplifies field replacement in installed equipment. The MCU's industrial -40 C to +85 C rating handles plenum-temperature environments without derating.
מומלץ
Educational and Prototyping Platform
The 28-pin SPDIP form factor of the PIC18LF2682-I/SP is breadboard-friendly and widely supported on Microchip's low-pin-count development boards and Curiosity/Explorer platforms. University courses teaching embedded CAN, ADC, and PWM use this part because students can swap it in/out of a breadboard without soldering. The 80 KB flash and ECAN peripherals expose real-world industrial capabilities at an accessible price point for student projects, capstone designs, and maker prototypes.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC18LF2682-I/SP — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC18F2682-I/SP | PIC18LF2685-I/SP | PIC18LF2580-I/SP | PIC18LF2680-I/SP |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | SPDIP-28 | SPDIP-28 (same) | SPDIP-28 (same) | SPDIP-28 (same) | SPDIP-28 (same) |
| Flash Memory | 80 KB | 80 KB | 96 KB | 32 KB | 64 KB |
| SRAM | 3 KB | 3 KB | 3 KB | 1.5 KB | 1 KB |
| ECAN Module | Yes (CAN 2.0B active) | Yes | Yes | Yes | No |
| Operating Voltage | 2.0 V to 5.5 V | 4.2 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V | 2.0 V to 5.5 V |
| CPU Speed | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) | 40 MHz (10 MIPS) |
| I/O Pins | 25 | 25 | 25 | 25 | 25 |
מבדילים עיקריים
- Wider operating voltage range than F variant (לעומתPIC18F2682-I/SP)
- Higher flash density than 2580 and 2680 families (לעומתPIC18LF2580-I/SP and PIC18LF2680-I/SP)
- More SRAM than PIC18LF2580-I/SP (לעומתPIC18LF2580-I/SP)
הערות תכנון
Place a 100 nF decoupling ceramic capacitor as close as possible to each VDD pin (pin 27 and any AVDD supply, if used) with traces kept short and wide to minimize inductance. Add a single 10 uF bulk capacitor at the board's supply input. For 3.3 V designs derived from 5 V, use a low-dropout regulator such as MCP1700 rated for the total board current. The PIC18LF2682's nanoWatt Technology supports <100 nA sleep current with the watchdog disabled; enable Sleep mode in firmware during inactive intervals to maximize battery life.
If the board uses an external crystal, place the crystal and its load capacitors within 5 mm of the OSC1/OSC2 pins (pins 8 and 9). Keep crystal traces short and guarded by a ground pour to reduce EMI. For high-speed CAN at 1 Mbps, route C1TX and C1RX as a matched differential pair to the MCP2551 or TJA1050 transceiver, with 120 ohm termination resistors at each end of the bus. Avoid routing CAN traces parallel to switching power traces for more than 25 mm to prevent common-mode noise injection.
Do not assume the F and LF variants are interchangeable: PIC18F2682 requires 4.2 V to 5.5 V while PIC18LF2682 supports 2.0 V to 5.5 V. Designs running at 3.3 V must use the LF variant. ECAN requires VDD >= 4.2 V; if ECAN is unused but the supply is below 4.2 V, disable the ECAN module in firmware (ECANCON = 0). When using ICSP for in-circuit programming, ensure the PGD/PGC lines (RB6/RB7) are not pulled low by external circuitry during programming, otherwise ICSP will fail.
מידע על תאימות
RoHS and REACH compliant per Microchip environmental documentation. Industrial -40C to +85C temperature grade. Not AEC-Q100 qualified - for AEC-Q100 automotive applications use PIC18F2682 variants qualified to Grade 1 or consult Microchip automotive portfolio.
