PIC18F46K80-I/PT - 8-bit 64MHz 64KB Flash MCU w/ ECAN | Microchip
MPN: PIC18F46K80-I/PT ✓ Hoạt độngPIC18F46K80-I/PT Tóm tắt
An 8-bit microcontroller (MCU) is a single-chip computer that combines a CPU, memory, and peripherals. The PIC18F family is Microchip's high-performance 8-bit line, positioned above the baseline PIC16 and PIC10/12 families. Within power management hierarchy, MCUs belong to embedded controllers, which sit alongside linear regulators, DC-DC converters, and supervisors in the broader power management and embedded systems taxonomy. The "K80" suffix designates nanoWatt XLP (eXtreme Low Power) technology, achieving nano-amp sleep currents ideal for battery-powered and always-on designs.
Key differentiating specifications include the integrated ECAN module supporting CAN 2.0B with up to 1 Mbps bit rate, nanoWatt XLP sleep current as low as 20 nA typical, 12-bit ADC with 12-channel capability (vs. 10-bit on older PIC18F46K22), and on-chip 8 MHz internal oscillator with 64 MHz PLL. The CTMU enables capacitive touch sensing without external components, while the 64 MHz operation delivers 16 MIPS throughput for real-time control loops.
Typical applications include automotive CAN bus nodes (body controllers, gateway modules, instrument clusters), industrial building control (HVAC, smart thermostats, sensor hubs), and low-power battery-backed sensor platforms. The combination of ECAN and nanoWatt XLP makes it especially well-suited for sleep-dominant networked sensor nodes that wake briefly to transmit CAN frames.
Designers should pay close attention to decoupling: place a 100 nF ceramic capacitor on VDD within 3 mm of each VDD/VDDCORE pin pair, plus a bulk 10 uF tantalum or ceramic on the main VDD rail. Brown-out reset and watchdog timer configuration should be evaluated early, as the K80 ships with extended WDT and BOR enabled by default.
Bộ thay thế dễ dàng lắp đặt cho PIC18F46K80-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 PIC18F46K80-I/PT (cùng hình factor và footprint) — khác nhau ở ADC, Package, Timers, Program Memory (Flash), CTMU.
PIC18F46K80T-I/PT
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PIC18LF46K80-I/PT
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Xem tài liệu →PIC18F46K80-E/ML
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Xem tài liệu →PIC18F46K80-I/PT Tỷ lệ tối đa & tính chất điện
| Core | PIC18 (8-bit) |
| Family | PIC18F K80 (XLP) |
| Program Memory (Flash) | 64 KB (32K x 16) |
| RAM | 3648 bytes |
| EEPROM | 1024 bytes |
| Max CPU Speed | 64 MHz (16 MIPS) |
| Operating Voltage | 1.8 V to 5.5 V |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Hộp | 44-pin TQFP (PT) 10x10 mm |
| I/O Pins | 36 |
| ADC | 12-bit, up to 11 channels |
| Comparators | 3 |
| ECAN Module | Yes (CAN 2.0B, up to 1 Mbps) |
| CTMU | Yes (Charge Time Measurement Unit) |
| UART | 2 |
| SPI | 2 |
| I2C (MSSP) | 2 |
| Timers (16-bit / 8-bit) | 5 / 2 |
| Internal Oscillator | 8 MHz with PLL |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 (per JEDEC J-STD-020) |
Cấu hình chân PIC18F46K80-I/PT
| Chân 1 | RE3/MCLR — Master Clear (Reset) input / Digital input RE3 |
| Chân 2 | RA0/AN0 — PORTA bit 0 / Analog input AN0 |
| Chân 3 | RA1/AN1 — PORTA bit 1 / Analog input AN1 |
| Chân 4 | RA2/AN2/Vref- — PORTA bit 2 / Analog AN2 / ADC Vref- |
| Chân 5 | RA3/AN3/Vref+ — PORTA bit 3 / Analog AN3 / ADC Vref+ |
| Chân 6 | RA4 — PORTA bit 4 (digital only) |
| Chân 7 | RA5/AN4/SS1 — PORTA bit 5 / Analog AN4 / SPI1 slave select |
| Chân 8 | RE0/AN5 — PORTE bit 0 / Analog AN5 |
| Chân 9 | RE1/AN6 — PORTE bit 1 / Analog AN6 |
| Chân 10 | RE2/AN7 — PORTE bit 2 / Analog AN7 |
| Chân 11 | VDD — Power supply +1.8V to +5.5V |
| Chân 12 | VSS — Ground reference |
| Chân 13 | RA7 — PORTA bit 7 |
| Chân 14 | RA6 — PORTA bit 6 |
| Chân 15 | RC0/SOSCO — PORTC bit 0 / Secondary oscillator output |
| Chân 16 | RC1/SOSCI — PORTC bit 1 / Secondary oscillator input |
| Chân 17 | RC2 — PORTC bit 2 |
| Chân 18 | RC3 — PORTC bit 3 |
| Chân 19 | RD0 — PORTD bit 0 |
| Chân 20 | RD1 — PORTD bit 1 |
| Chân 21 | RD2 — PORTD bit 2 |
| Chân 22 | RD3 — PORTD bit 3 |
| Chân 23 | RC4 — PORTC bit 4 |
| Chân 24 | RC5 — PORTC bit 5 |
| Chân 25 | RC6 — PORTC bit 6 |
| Chân 26 | RC7 — PORTC bit 7 |
| Chân 27 | RD4 — PORTD bit 4 |
| Chân 28 | RD5 — PORTD bit 5 / PWM |
| Chân 29 | RD6 — PORTD bit 6 / PWM |
| Chân 30 | RD7 — PORTD bit 7 / PWM |
| Chân 31 | VSS — Ground reference |
| Chân 32 | VDD — Power supply +1.8V to +5.5V |
| Chân 33 | RB0 — PORTB bit 0 / interrupt-on-change |
| Chân 34 | RB1 — PORTB bit 1 / interrupt-on-change |
| Chân 35 | RB2 — PORTB bit 2 / interrupt-on-change |
| Chân 36 | RB3 — PORTB bit 3 / interrupt-on-change |
| Chân 37 | RB4 — PORTB bit 4 / interrupt-on-change |
| Chân 38 | RB5 — PORTB bit 5 / interrupt-on-change |
| Chân 39 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 40 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 41 | AVDD — Analog power supply |
| Chân 42 | AVSS — Analog ground reference |
| Chân 43 | RC5/CANRX — PORTC bit 5 / ECAN receive input (note: shared with RC5) |
| Chân 44 | RC6/CANTX — PORTC bit 6 / ECAN transmit output (note: shared with RC6) |
Ứng dụng tiêu biểu
PIC18F46K80-I/PT phù hợp cho 7 Áp dụngs: Automotive CAN Bus Body Controller, Industrial Building Control & HVAC, Capacitive Touch User Interface, Battery-Powered Wireless Sensor Node, Instrument Cluster & Dashboard Display, Smart Agriculture Sensor Hub, Security & Access Control Panel.
Automotive CAN Bus Body Controller
The PIC18F46K80-I/PT is purpose-built for automotive CAN nodes where the integrated ECAN 2.0B module, 64 KB Flash, and nanoWatt XLP sleep modes all converge. In a body controller, the part manages door modules, lighting, and mirror control over a 500 kbps CAN bus, waking periodically to transmit status frames and returning to deep sleep between events. Its 1.8 V to 5.5 V operation tolerates direct 12 V automotive rail regulation dropouts and cold-crank transients.
Được đề xuất
Industrial Building Control & HVAC
In HVAC and building automation, the PIC18F46K80-I/PT provides the ECAN connectivity required for BACnet-over-CAN or vendor-proprietary industrial networks while the 12-bit ADC reads thermistor, humidity, and pressure sensors with 0.1% resolution. The 16 MIPS throughput runs PID loops for damper and valve control with sub-millisecond cycle times. XLP sleep modes below 1 uA allow battery-backed wireless sensor variants to operate for years on a primary cell.
Được đề xuất
Capacitive Touch User Interface
The on-chip CTMU (Charge Time Measurement Unit) of the PIC18F46K80-I/PT enables up to 16-channel capacitive touch sensing without dedicated touch ICs, eliminating BOM cost and PCB area. With 12-bit ADC resolution and a sub-microsecond CTMU discharge timebase, the part can scan a 4x4 keypad or a slider in under 5 ms. Typical use cases include appliance front panels, smart thermostats, and industrial operator interfaces where robust mechanical-switch replacement is desired.
Được đề xuất
Battery-Powered Wireless Sensor Node
Battery-backed sensor nodes leverage the PIC18F46K80-I/PT's nanoWatt XLP sleep current of 20-100 nA typical to achieve multi-year coin-cell operation. The MCU spends most of its time in deep sleep, waking every few seconds to read a sensor, transmit via a connected sub-GHz radio (e.g., MRF89XA), and re-enter sleep. The 1.8 V minimum VDD allows direct operation from a single Li-primary cell without boost conversion.
Được đề xuất
Instrument Cluster & Dashboard Display
Automotive instrument clusters require CAN connectivity to the vehicle bus plus sufficient Flash to host graphics and diagnostics. The PIC18F46K80-I/PT's 64 KB Flash and ECAN module enable mid-tier cluster designs that read vehicle speed, RPM, and fuel level from CAN frames and drive LED or small-segment-LCD indicators. Its 36 I/O pins connect directly to seven-segment or LED matrix drivers without external logic.
Được đề xuất
Smart Agriculture Sensor Hub
Outdoor agricultural deployments require low-power operation, CAN bus for tractor-implement networking (ISOBUS precursors), and robust ADC channels for soil-moisture and NPK-sensor interfaces. The PIC18F46K80-I/PT's 12-bit ADC and ECAN fit the requirements, while XLP sleep lets solar-charged nodes survive cloudy weeks. Industrial -40 C to +85 C temperature range tolerates direct mounting in field enclosures.
Được đề xuất
Security & Access Control Panel
Access control panels in commercial security systems use the PIC18F46K80-I/PT to scan keypads, RFID readers, and door sensors while reporting events over a CAN or RS-485 network. The CTMU enables touch-capacitive keypads without external components, the 12-bit ADC reads analog tamper switches, and the 1024-byte EEPROM stores up to 100 user credentials with wear-leveling. Industrial temperature range supports outdoor and unheated vestibule mounting.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F46K80-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 | PIC18F46K80T-I/PT | PIC18LF46K80-I/PT | PIC18F46K80-I/P | PIC18F46K80-E/ML | PIC18F45K80-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (PT) 10x10 mm | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin QFN (ML) - same footprint | 40-pin PDIP/TQFP - different (40-pin) |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB |
| RAM | 3648 bytes | 3648 bytes | 3648 bytes | 3648 bytes | 3648 bytes | 2048 bytes |
| Operating Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 3.6 V (LF low-voltage) | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| ECAN Module | Yes | Yes | Yes | Yes | Yes | Yes |
| CTMU (Capacitive Touch) | Yes | Yes | Yes | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Integrated ECAN 2.0B with hardware acceptance filtering (vsPIC18F46K22-I/PT)
- 12-bit ADC vs 10-bit on prior generation (vsPIC18F46K22-I/PT)
- nanoWatt XLP technology for sub-100 nA sleep (vsPIC18F46K22-I/PT)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor on each VDD pin (44-TQFP pin 11 and pin 32) within 3 mm of the package, plus a single 10 uF bulk capacitor on the main VDD rail near the MCU. For ADC accuracy, place an additional 100 nF on the AVDD pin (pin 41) and a small ferrite bead between digital VDD and AVDD to isolate switching noise from the analog supply.
Keep the ECAN bus traces (CANTX pin 44, CANRX pin 43) short and matched - Microchip recommends a 100 ohm differential impedance with a twisted-pair or stripline routing. Place the CAN transceiver (e.g., MCP2561) within 50 mm of the MCU, with a 120 ohm termination resistor at each end of the bus. Avoid routing CAN traces near switching DC-DC converters or high-current traces to minimize EMI susceptibility.
Configuration words must be set correctly on first programming: enable the internal 8 MHz oscillator with PLL for 64 MHz operation, set the watchdog timer (WDT) to either off or with a generous postscaler, and configure the brown-out reset (BOR) voltage below the minimum operating rail. Forgetting to clear the IESO/FCMEN bits or leaving the factory-default extended WDT active can prevent reliable startup with low-voltage rails.
The ICSP pins (PGC pin 39, PGD pin 40) are also PORTB bits 6 and 7; ensure these lines are not driven externally during programming or in-circuit debugging. Add 10 kohm pull-ups on RB6/RB7 if external peripherals may otherwise interfere with the debugger. The MCLR pin (pin 1) requires a 10 kohm pull-up to VDD; never leave MCLR floating, or the part may randomly reset in noisy environments.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Not specifically AEC-Q100 qualified for automotive - choose automotive-grade variant with explicit Q100 marking if required.