PIC18F66J65-I/PT - 8-bit 41.667MHz 96KB Flash MCU w/ Ethernet | Microchip
MPN: PIC18F66J65-I/PT ✓ فعالPIC18F66J65-I/PT نمای کلی
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), working memory (RAM), and a set of programmable peripherals into one IC. Within the semiconductor hierarchy, MCUs belong to the broader class of microcontrollers -> embedded processors -> digital ICs. The PIC18F family uses Microchip's enhanced Harvard RISC architecture with separate program and data buses, allowing simultaneous instruction fetch and operand access.
Key features of this part include an integrated IEEE 802.3-compatible 10BASE-T Ethernet controller with 8KB Ethernet buffer, support for unicast/multicast/broadcast packet filtering, programmable wake-on-LAN for Magic Packet and pattern match, two MSSP modules (I2C/SPI), two enhanced USARTs, a 10-bit ADC with up to 16 channels, and 54 programmable digital I/O lines. The 64-pin TQFP provides generous I/O count in a moderate footprint.
The integrated 10BASE-T PHY eliminates the need for an external Ethernet transceiver, which is rare in 8-bit MCUs. The PIC18J core adds hardware multiply and a 16-bit wide instruction word, giving the family 16 MIPS throughput at 41.667 MHz. This combination suits single-chip networked nodes where BOM cost and board area must be minimized.
Typical applications include industrial Ethernet sensor nodes, building-automation controllers, remote-monitoring terminals, BACnet/Modbus gateways, and embedded web servers. Designers should budget for the 4.2V minimum supply (this is a 5V-only J-series part, not 3.3V-tolerant), provide a dedicated ferrite + bulk cap on the analog AVDD/AVSS rails, and reserve an external 25 MHz oscillator for the Ethernet PLL.
جایگزین‌های drop-in برای PIC18F66J65-I/PT — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC18F66J65-I/PT (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Program Memory (Flash), Core Architecture, I/O Pins, Operating Temperature.
PIC18F66J65T-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F66J55-I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F65K90-I/PT
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
PIC18F66K80-I/PT
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F66J65-I/PT حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | PIC18 (8-bit RISC, enhanced Harvard) |
| حداکثر فرکانس کلاک | 41.667 MHz (FOSC internal / external) |
| Instruction Throughput | 16 MIPS (200 ns per instruction) |
| Program Memory (Flash) | 96 KB (48K x 16 words) |
| Data RAM | 3808 bytes (3.8 KB) |
| Ethernet Buffer RAM | 8 KB (dedicated) |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| Programmable I/O Pins | 54 |
| بسته‌بندی | 64-pin TQFP (10x10 mm, 1.0 mm height, MS-026) |
| نوع نصب | Surface Mount |
| محدوده دمای کاری | -40 C to +85 C (Industrial, '-I') |
| Communication Interfaces | I2C, SPI, 2x USART, integrated 10BASE-T Ethernet MAC+PHY |
| ADC | 10-bit, up to 16 channels |
| Lead-Free / RoHS | Lead-free finish; RoHS compliance per data |
پیکربندی پین PIC18F66J65-I/PT
| پین 1 | RC1/T1OSI/CCP2 — I/O port C bit 1 / Timer1 oscillator input / CCP2 capture/compare/PWM |
| پین 2 | RC2/CCP1 — I/O port C bit 2 / CCP1 capture/compare/PWM |
| پین 3 | RC3/REF+/AN11 — I/O port C bit 3 / DAC reference+ / ADC analog input 11 |
| پین 4 | RC4/REF-/AN10 — I/O port C bit 4 / DAC reference- / ADC analog input 10 |
| پین 5 | RC5/AN12 — I/O port C bit 5 / ADC analog input 12 |
| پین 6 | RC6/TX1/CK1 — I/O port C bit 6 / USART1 TX / USART1 clock |
| پین 7 | RC7/RX1/DT1 — I/O port C bit 7 / USART1 RX / USART1 data |
| پین 8 | RE0/RD/AN5 — I/O port E bit 0 / parallel slave port read / ADC input 5 |
| پین 9 | RE1/WR/AN6 — I/O port E bit 1 / parallel slave port write / ADC input 6 |
| پین 10 | RE2/CS/AN7 — I/O port E bit 2 / parallel slave port chip select / ADC input 7 |
| پین 11 | VDD — Digital supply voltage (4.2V-5.5V) |
| پین 12 | VSS — Digital ground |
| پین 13 | OSC1/CLKI/RA7 — External oscillator input / port A bit 7 |
| پین 14 | OSC2/CLKO/RA6 — External oscillator output / port A bit 6 |
| پین 15 | RC0/T1OSO — I/O port C bit 0 / Timer1 oscillator output |
| پین 16 | INT0/FLT0/RA0 — External interrupt 0 / PWM fault / port A bit 0 |
| پین 17 | INT1/RA1 — External interrupt 1 / port A bit 1 |
| پین 18 | INT2/RA2 — External interrupt 2 / port A bit 2 |
| پین 19 | T0CKI/RA3 — Timer0 clock input / port A bit 3 |
| پین 20 | RA4 — I/O port A bit 4 |
| پین 21 | RA5 — I/O port A bit 5 |
| پین 22 | AVDD — Analog supply voltage |
| پین 23 | AVSS — Analog ground |
| پین 24 | AN8/FLT1/RB0 — ADC analog input 8 / PWM fault 1 / port B bit 0 |
| پین 25 | AN9/RB1 — ADC analog input 9 / port B bit 1 |
| پین 26 | AN10/RB2 — ADC analog input 10 / port B bit 2 |
| پین 27 | AN11/RB3 — ADC analog input 11 / port B bit 3 |
| پین 28 | AN12/RB4 — ADC analog input 12 / port B bit 4 |
| پین 29 | AN13/RB5 — ADC analog input 13 / port B bit 5 |
| پین 30 | PGC/RB6 — ICSP clock / port B bit 6 |
| پین 31 | PGD/RB7 — ICSP data / port B bit 7 |
| پین 32 | VDD — Digital supply voltage |
| پین 33 | VSS — Digital ground |
| پین 34 | RD0/PSP0 — I/O port D bit 0 / parallel slave port data 0 |
| پین 35 | RD1/PSP1 — I/O port D bit 1 / parallel slave port data 1 |
| پین 36 | RD2/PSP2 — I/O port D bit 2 / parallel slave port data 2 |
| پین 37 | RD3/PSP3 — I/O port D bit 3 / parallel slave port data 3 |
| پین 38 | RC4/PSP4 — I/O port C bit 4 (alt) / parallel slave port data 4 |
| پین 39 | RC5/PSP5 — I/O port C bit 5 (alt) / parallel slave port data 5 |
| پین 40 | RC6/PSP6 — I/O port C bit 6 (alt) / parallel slave port data 6 |
| پین 41 | RC7/PSP7 — I/O port C bit 7 (alt) / parallel slave port data 7 |
| پین 42 | TX2/RC6 (alt) — USART2 TX (alternate mapping) |
| پین 43 | RX2/RC7 (alt) — USART2 RX (alternate mapping) |
| پین 44 | ETH+ — Ethernet differential pair positive (to magnetics TX/RX) |
| پین 45 | ETH- — Ethernet differential pair negative (to magnetics TX/RX) |
| پین 46 | VDD — Digital supply voltage |
| پین 47 | VSS — Digital ground |
| پین 48 | MCLR — Master clear (reset) input, active-low |
| پین 49 | VDDCORE — Core logic regulator output (cap to VSS) |
| پین 50 | ENVREG — Internal Ethernet voltage regulator enable / cap |
| پین 51 | VDD — Digital supply voltage |
| پین 52 | VSS — Digital ground |
| پین 53 | SCL1/RD5 — I2C1 clock / port D bit 5 |
| پین 54 | SDA1/RD4 — I2C1 data / port D bit 4 |
| پین 55 | SCK1/RD6 — SPI1 clock / port D bit 6 |
| پین 56 | SDO1/RD7 — SPI1 data out / port D bit 7 |
| پین 57 | SDI1/RB5 (alt) — SPI1 data in / port B bit 5 (alt) |
| پین 58 | SS1/RB4 (alt) — SPI1 slave select / port B bit 4 (alt) |
| پین 59 | CCP5/RE3 — CCP5 PWM output / port E bit 3 |
| پین 60 | CCP4/RE4 — CCP4 PWM output / port E bit 4 |
| پین 61 | CCP3/RE5 — CCP3 PWM output / port E bit 5 |
| پین 62 | RE6 — I/O port E bit 6 |
| پین 63 | RE7 — I/O port E bit 7 |
| پین 64 | AVDD — Analog supply voltage |
کاربردهای معمول
PIC18F66J65-I/PT مناسب است برای 6 کاربردs: Industrial Ethernet Sensor Node, Building Automation Controller, Remote Monitoring Terminal, Embedded Web Server, BACnet / Modbus TCP Gateway, IoT Edge Node (Wired).
Industrial Ethernet Sensor Node
The PIC18F66J65-I/PT is well suited for industrial Ethernet sensor nodes because its integrated 10BASE-T MAC+PHY eliminates the need for an external PHY chip, reducing BOM cost by USD 1.50-2.50 per node and saving roughly 200 mm^2 of PCB area. With 96 KB Flash and 3808 bytes RAM, the part comfortably runs Microchip's MLA TCP/IP stack or a lightweight uIP port, while the 8 KB dedicated Ethernet buffer prevents packet loss under burst sensor traffic. Industrial -40 C to +85 C operation, 4.2-5.5 V supply tolerance, and 54 programmable I/O let designers connect to legacy 24V->5V industrial rails and a wide mix of analog and digital sensors without level shifters.
پیشنهادی
Building Automation Controller
For building-automation controllers, the PIC18F66J65-I/PT's integrated Ethernet MAC+PHY enables BACnet/IP or Modbus TCP connectivity in a single chip, while its 54 I/O pins support HVAC actuators, light relays, and analog sensor inputs. The 96 KB Flash holds a BACnet stack plus application logic, and the 10-bit ADC with up to 16 channels reads temperature, humidity, and CO2 sensors without external converters. The 5V supply rails match commercial 24VAC->5VDC building power modules, and the industrial temperature grade tolerates plenum and rooftop enclosures. Designers can also leverage the PIC18F66K80-I/PT if CAN-bus devices such as VAV dampers need to coexist on the same PCB.
پیشنهادی
Remote Monitoring Terminal
The PIC18F66J65-I/PT fits remote-monitoring terminals because its wake-on-LAN features (Magic Packet, unicast, multicast, broadcast, pattern match) let the node sleep at low current and wake only when a qualifying packet arrives. Combined with 96 KB Flash for logging firmware and 8 KB Ethernet buffer for burst telemetry, the part supports solar- or battery-powered remote units. The 4.2-5.5 V supply range accepts standard 5V regulator outputs from 12V or 24V battery packs, and the -40 C to +85 C industrial range tolerates outdoor enclosures. For lower-power alternatives without Ethernet, the PIC18F65K90-I/PT can be considered but requires an external PHY.
پیشنهادی
Embedded Web Server
The PIC18F66J65-I/PT is a classic choice for embedded web servers because its 96 KB Flash stores both the TCP/IP stack and the HTML configuration pages, while the integrated 10BASE-T PHY removes external Ethernet circuitry. With 3808 bytes RAM plus 8 KB Ethernet buffer, it serves simple configuration UIs and JSON telemetry at modest request rates typical of industrial settings (a few requests per second). The 16 MIPS throughput at 41.667 MHz is fast enough to parse HTTP requests without offloading. For higher-throughput web servers, designers can step up to PIC32MX or SAM E70 parts, but the J65 hits a compelling price-per-feature point.
پیشنهادی
BACnet / Modbus TCP Gateway
The PIC18F66J65-I/PT fits BACnet/IP and Modbus TCP gateways because the integrated Ethernet controller handles both protocols' UDP/TCP transport, and 96 KB Flash holds full BACnet/Modbus application objects plus a small web UI for diagnostics. The 54 programmable I/O can be reassigned as RS-485 transceivers for legacy serial fieldbus, and the two USARTs plus two MSSP modules give serial-bus flexibility. With industrial -40 C to +85 C operation and 5V supply tolerance, the part deploys into building-automation panels without additional regulation. For gateways that also need CAN bus, the PIC18F66K80-I/PT is a closer match but trades off integrated Ethernet.
پیشنهادی
IoT Edge Node (Wired)
The PIC18F66J65-I/PT serves wired IoT edge nodes by providing integrated Ethernet plus enough Flash (96 KB) and RAM (3808 bytes + 8 KB Ethernet buffer) to run MQTT-over-TCP clients, simple TLS handshakes, and JSON serialization. The 64-pin TQFP footprint is comfortable for hand-soldered prototypes and SMT production lines alike, and the 5V supply rails are compatible with Power-over-Ethernet (PoE) 5V regulator outputs. The -40 C to +85 C industrial range meets indoor industrial IoT requirements. Pairing the J65 with a small EEPROM and an external RTC delivers a robust edge node; for lower-power wireless IoT, designers should consider PIC18F46K22-I/P with an external radio.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC18F66J65-I/PT — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC18F66J65T-I/PT | PIC18F66J55-I/PT | PIC18F65K90-I/PT | PIC18F66K80-I/PT |
|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 96 KB | 96 KB | 64 KB | 32 KB | 64 KB |
| Data RAM | 3808 bytes | 3808 bytes | 3808 bytes | 2048 bytes | 3648 bytes |
| Integrated Ethernet PHY | Yes (10BASE-T MAC+PHY) | Yes (10BASE-T MAC+PHY) | Yes (10BASE-T MAC+PHY) | No | No |
| Maximum Clock | 41.667 MHz (16 MIPS) | 41.667 MHz (16 MIPS) | 41.667 MHz (16 MIPS) | 64 MHz (16 MIPS) | 64 MHz (16 MIPS) |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| ADC Resolution | 10-bit | 10-bit | 10-bit | 12-bit | 12-bit |
| CAN Bus | No | No | No | Yes (ECAN) | Yes (ECAN) |
تفاوت‌های کلیدی
- Integrated 10BASE-T MAC+PHY in 64-pin TQFP (در مقابلPIC18F65K90-I/PT)
- 96 KB Flash vs 64 KB Flash on the J55 variant (در مقابلPIC18F66J55-I/PT)
- Higher Flash than the PIC18F66K80-I/PT with same Ethernet footprint option (در مقابلPIC18F66K80-I/PT)
یادداشت‌های طراحی
The PIC18F66J65-I/PT operates from 4.2V to 5.5V; the VDD core rail and the analog AVDD rail must each have a 100 nF decoupling capacitor placed within 5 mm of the respective pins, plus a 10 uF bulk capacitor on the main VDD rail. The VDDCORE pin requires a low-ESR 10 uF ceramic capacitor to ground; per Microchip datasheet this internal regulator must NOT be bypassed externally with a voltage source. Brown-out resets should be configured via the BOREN fuse to handle 5V rail droops below 4.2V.
Place the 25 MHz external oscillator (or ceramic resonator) within 5 mm of OSC1/OSC2 with short, ground-guarded traces, since the Ethernet PLL derives its reference from this clock and any jitter degrades 10BASE-T signal integrity. The Ethernet differential pair (ETH+/ETH-) must be routed as a 100 ohm differential microstrip with length matching within 2 mm, kept away from switching nodes, and terminated with a 1:1 isolation transformer before the RJ45 jack. Do not route digital signals across the AVDD/AVSS split plane cut.
Estimated: programming the J65 firmware into a J55 die by accident (96 KB binary that overflows the J55's 64 KB Flash) is a common build error; verify the target die ID via the Device ID register before flashing production units. Also remember this is a 5V-only part - applying 3.3V on any I/O with VDD at 5V can source current into the input, but applying 5V signals while VDD is at 3.3V will damage the part. Use level translators or a PIC18F K-series part for 3.3V mixed-voltage designs.
Estimated: the 64-pin TQFP package has a theta_JA of approximately 50 C/W on a 2-layer JEDEC test board with no airflow. At the maximum operating current (Ethernet active, all peripherals on), internal dissipation typically stays under 200 mW, so junction temperature rise is bounded near 10 C above ambient. Industrial applications at +85 C ambient therefore keep Tj well below the +125 C ABS max without a heatsink, but high-density stacked boards should still include thermal vias under the exposed pad if present.
اطلاعات انطباق
RoHS and REACH compliance per Microchip product environmental information. Lead-free matte-tin plating. Industrial -40 C to +85 C temperature grade ('-I' suffix). Not AEC-Q100 qualified; for automotive ECUs choose PIC18F66J65-I/PT derivatives with Q1 suffix.
