PIC18F66J65T-I/PT - 8-bit MCU 96KB Flash 10BASE-T Ethernet | Microchip
MPN: PIC18F66J65T-I/PT ✓ Hoạt độngPIC18F66J65T-I/PT Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a CPU, program memory (Flash), data memory (RAM), timers, communication peripherals, and I/O. The PIC18 family uses a 16-bit modified Harvard RISC architecture targeting high-throughput 8-bit applications where deterministic interrupt response matters more than raw MHz. Embedded Ethernet MCUs like the PIC18F66J65 form a sub-category at the intersection of microcontrollers and network interface ICs, combining an HTTP/TCP-friendly stack with general-purpose digital I/O.
Key features include 54 digital I/O pins organized across multiple ports, an integrated 10BASE-T Ethernet MAC with HP Auto-MDIX PHY, full-speed USB 2.0 (device/host/OTG), two CAN modules (ECAN), two UART/USART modules, SPI and I2C peripherals, 16-channel 10-bit ADC, and four 16-bit timers with CCP/ECCP modules. The on-chip RTCC with timestamp enables time-stamped event logging critical for industrial controllers. An LCD driver with charge pump supports up to 132 segments, eliminating external display drivers in HMI designs.
Architecture-wise, the device uses Microchip's nanoWatt XLP technology for low-power sleep modes (down to 100 nA typical standby), making it deployable in battery-backed remote monitoring nodes. Hardware AES/DES encryption accelerators and a true random number generator support secure remote-management firmware updates. The 64-pin TQFP package exposes ample peripherals, including parallel master/slave port for bus expansion.
Typical applications include industrial Ethernet sensors, building automation gateways, remote monitoring controllers, intelligent HVAC nodes, networked laboratory instruments, and automotive infotainment auxiliary modules. Its combination of 10BASE-T, USB, CAN, and ADC simplifies multi-protocol field nodes that previously required a separate Ethernet controller.
When designing with this MCU, allocate sufficient Flash headroom for the TCP/IP stack (roughly 40 KB of the 96 KB), use the integrated MAC/PHP+PHYs and an external 25 MHz crystal reference, and follow Microchip's TCP/IP stack Application Note AN833 for buffer sizing. EMC layout requires guarding the analog AVdd rail and isolating the Ethernet magnetics by at least 4 mm of copper-free PCB area.
This page synthesizes distributor pricing, drop-in alternatives from the same PIC18 family, and practical Ethernet-PCB design notes not found in the standalone manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC18F66J65T-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 PIC18F66J65T-I/PT (cùng hình factor và footprint) — khác nhau ở Package, Program Memory (Flash), ADC, I/O Pins, Core Architecture.
PIC18F67J60-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F96J65-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC18F86J65-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F66J65-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC18F67J10-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC18F66J65T-I/PT Tỷ lệ tối đa & tính chất điện
| Architecture | PIC18 (8-bit RISC, Harvard) |
| Instruction Set | PIC18 (16-bit instructions) |
| Program Memory (Flash) | 96 KB |
| RAM | 12 KB |
| CPU Speed | 40 MHz (10 MIPS) |
| Instruction Cycle | 200 ns |
| Supply Voltage (Vdd) | 2.0 V to 3.6 V |
| Wide-range Input Voltage | 4.2 V to 5.5 V |
| I/O Pins | 54 (with digital features) |
| Ethernet | 10BASE-T (integrated MAC + PHY) |
| USB | Full-Speed USB 2.0 (device/host/OTG) |
| CAN | 2x ECAN modules |
| UART/USART | 2x |
| SPI | Yes |
| I2C | Yes |
| ADC | 10-bit, up to 16 channels |
| Timers | 4x 16-bit with CCP/ECCP |
| LCD Driver | Up to 132 segments with charge pump |
| Encryption | AES / DES hardware accelerator |
| Hộp | 64-pin TQFP (PT), 10x10 mm |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Cấp MSL | 3 |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC18F66J65T-I/PT
| Chân 1 | RC1/T1OSI/CCP2 — I/O port C bit 1 / Timer1 oscillator input / Capture/Compare 2 |
| Chân 2 | RC2/CCP1 — I/O port C bit 2 / Capture/Compare 1 |
| Chân 3 | RC3/SCK/SCL — I/O port C bit 3 / SPI clock / I2C clock |
| Chân 4 | RC4/SDI/SDA — I/O port C bit 4 / SPI data in / I2C data |
| Chân 5 | RC5/SDO — I/O port C bit 5 / SPI data out |
| Chân 6 | RC6/TX1/CK1 — I/O port C bit 6 / USART1 TX / clock out |
| Chân 7 | RC7/RX1/DT1 — I/O port C bit 7 / USART1 RX / data |
| Chân 8 | RE0/RD — I/O port E bit 0 / parallel slave port read |
| Chân 9 | RE1/WR — I/O port E bit 1 / parallel slave port write |
| Chân 10 | RE2/CS — I/O port E bit 2 / parallel slave port chip select |
| Chân 11 | VDD — Core supply 2.0-3.6 V |
| Chân 12 | VSS — Ground |
| Chân 13 | OSC1/CLKI/RA7 — Crystal input / external clock / port A bit 7 |
| Chân 14 | OSC2/CLKO/RA6 — Crystal output / clock out / port A bit 6 |
| Chân 15 | VDD5V0 — Wide-range 5 V input supply |
| Chân 16 | RH0 — I/O port H bit 0 |
| Chân 17 | RH1 — I/O port H bit 1 |
| Chân 18 | RH2 — I/O port H bit 2 |
| Chân 19 | RH3 — I/O port H bit 3 |
| Chân 20 | RH4/LEDA — I/O port H bit 4 / LCD backlight anode |
| Chân 21 | RH5/LEDK — I/O port H bit 5 / LCD backlight cathode |
| Chân 22 | RH6 — I/O port H bit 6 |
| Chân 23 | RH7/CCP6 — I/O port H bit 7 / Capture/Compare 6 |
| Chân 24 | RG0 — I/O port G bit 0 |
| Chân 25 | RG1/TX2 — I/O port G bit 1 / USART2 TX |
| Chân 26 | RG2/RX2 — I/O port G bit 2 / USART2 RX |
| Chân 27 | RG3/CCP5 — I/O port G bit 3 / Capture/Compare 5 |
| Chân 28 | RG4 — I/O port G bit 4 |
| Chân 29 | MCLR/RE3 — Master clear reset / port E bit 3 |
| Chân 30 | RA0/AN0 — I/O port A bit 0 / analog input 0 |
| Chân 31 | RA1/AN1 — I/O port A bit 1 / analog input 1 |
| Chân 32 | RA2/AN2 — I/O port A bit 2 / analog input 2 |
| Chân 33 | RA3/AN3 — I/O port A bit 3 / analog input 3 |
| Chân 34 | RA4/AN4/T0CKI — I/O port A bit 4 / analog input 4 / Timer0 clock |
| Chân 35 | RA5/AN5 — I/O port A bit 5 / analog input 5 |
| Chân 36 | VSS — Ground |
| Chân 37 | VDD — Core supply 2.0-3.6 V |
| Chân 38 | RB0/AN8 — I/O port B bit 0 / analog input 8 |
| Chân 39 | RB1/AN9 — I/O port B bit 1 / analog input 9 |
| Chân 40 | RB2/AN10 — I/O port B bit 2 / analog input 10 |
| Chân 41 | RB3/AN11 — I/O port B bit 3 / analog input 11 |
| Chân 42 | RB4/AN12 — I/O port B bit 4 / analog input 12 |
| Chân 43 | RB5/AN13 — I/O port B bit 5 / analog input 13 |
| Chân 44 | RB6/AN14/PGC — I/O port B bit 6 / analog input 14 / ICSP clock |
| Chân 45 | RB7/AN15/PGD — I/O port B bit 7 / analog input 15 / ICSP data |
| Chân 46 | AVSS — Analog ground |
| Chân 47 | AVDD — Analog supply (filtered) |
| Chân 48 | RD0/PSP0 — I/O port D bit 0 / parallel slave port 0 |
| Chân 49 | RD1/PSP1 — I/O port D bit 1 / parallel slave port 1 |
| Chân 50 | RD2/PSP2/CANTX1 — I/O port D bit 2 / parallel slave port 2 / CAN1 TX |
| Chân 51 | RD3/PSP3/CANRX1 — I/O port D bit 3 / parallel slave port 3 / CAN1 RX |
| Chân 52 | RD4/PSP4 — I/O port D bit 4 / parallel slave port 4 |
| Chân 53 | RD5/PSP5/CANTX2 — I/O port D bit 5 / parallel slave port 5 / CAN2 TX |
| Chân 54 | RD6/PSP6/CANRX2 — I/O port D bit 6 / parallel slave port 6 / CAN2 RX |
| Chân 55 | RD7/PSP7 — I/O port D bit 7 / parallel slave port 7 |
| Chân 56 | VMGR — Ethernet voltage regulator bypass |
| Chân 57 | VDDRX — Ethernet receiver supply |
| Chân 58 | VSSRX — Ethernet receiver ground |
| Chân 59 | TPOUT+ — Ethernet twisted pair output + |
| Chân 60 | TPOUT- — Ethernet twisted pair output - |
| Chân 61 | TPIN+ — Ethernet twisted pair input + |
| Chân 62 | TPIN- — Ethernet twisted pair input - |
| Chân 63 | RBIAS — Ethernet bias reference resistor |
| Chân 64 | VSS — Ground |
Ứng dụng tiêu biểu
PIC18F66J65T-I/PT phù hợp cho 6 Áp dụngs: Industrial Ethernet Sensor Gateway, Building Automation Controller, Networked Remote Monitoring Node, USB-CAN-Ethernet Multi-Protocol Bridge, Intelligent HVAC Control Unit, Security and Access Control Panel.
Industrial Ethernet Sensor Gateway
The PIC18F66J65T-I/PT's integrated 10BASE-T MAC with HP Auto-MDIX eliminates the need for an external Ethernet controller, making it ideal for cost-optimized industrial sensor gateways. The 96 KB Flash comfortably hosts Microchip's TCP/IP stack (Application Note AN833) with room left for Modbus TCP server and edge data filtering. With 54 I/O pins, multiple sensors can be aggregated before transmission over Ethernet. Operating from -40 C to +85 C, the part handles factory floor temperatures, while its 100 nA nanoWatt standby enables solar or battery-backed remote sensor nodes that wake, push data, and return to sleep.
Được đề xuất
Building Automation Controller
The PIC18F66J65T-I/PT combines Ethernet connectivity with two ECAN modules, making it well suited to building automation controllers bridging CAN-based HVAC/lighting fieldbuses to BACnet/Modbus TCP over Ethernet. Its 16-channel 10-bit ADC interfaces directly with temperature, humidity, and CO2 sensors without external analog front-ends, while four 16-bit timers drive PWM-controlled damper and valve actuators. The integrated LCD driver with charge pump supports up to 132 segments for in-wall HMI displays, eliminating external display driver ICs. Wide-range 4.2-5.5 V input is compatible with common 24 V industrial building-automation backplanes.
Được đề xuất
Networked Remote Monitoring Node
The PIC18F66J65T-I/PT enables compact remote monitoring nodes that report sensor readings over Ethernet to a central SCADA server. The hardware AES engine encrypts telemetry for secure transmission, and the RTCC with timestamp tags each packet for accurate event correlation in industrial environments. Its 54 I/O pins handle multiple sensor types - digital inputs, analog outputs, and pulse counters - all in a single chip. The 96 KB Flash holds the TCP/IP stack plus custom application logic such as alarm thresholds and local control loops.
Được đề xuất
USB-CAN-Ethernet Multi-Protocol Bridge
For industrial protocol bridges, the PIC18F66J65T-I/PT uniquely combines full-speed USB 2.0 (device/host/OTG), two ECAN controllers, and 10BASE-T Ethernet on a single die. This triple-protocol capability allows one chip to translate CAN messages to Ethernet (or USB to CAN), eliminating the usual multi-IC bridge. USB OTG enables field configuration from tablets or smartphones without a host PC, useful during commissioning. The 12 KB RAM supports buffer management between the three bus speeds without packet loss.
Được đề xuất
Intelligent HVAC Control Unit
With 16 analog inputs, four 16-bit timers, and integrated Ethernet, the PIC18F66J65T-I/PT is a strong choice for intelligent HVAC controllers. The 10-bit ADC samples multiple temperature zones and air-quality sensors while the ECCP modules drive variable-speed fan motors and damper actuators. Real-time communication with building management systems occurs over Ethernet, and the nanoWatt XLP sleep reduces standby power when the system is in eco-mode. The industrial -40 C to +85 C range handles rooftop and plant-room installations without thermal concerns.
Được đề xuất
Security and Access Control Panel
The PIC18F66J65T-I/PT supports security access panels that report door state, badge events, and alarm triggers over Ethernet to a centralized access-control server. Hardware AES/DES acceleration secures credential data, while the RTCC timestamps every event for audit logs. The integrated LCD controller drives local keypads and indicator panels without external drivers. With 54 I/O, the same MCU handles multiple doors (each needing card reader, exit button, magnetic sensor, and buzzer), reducing per-door cost in multi-door installations.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC18F66J65T-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 | PIC18F67J60-I/PT | PIC18F96J65-I/PT | PIC18F86J65-I/PT | PIC18F67J10-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same |
| Flash Memory | 96 KB | 128 KB | 96 KB | 96 KB | 128 KB |
| RAM | 12 KB | 8 KB | 12 KB | 12 KB | 3.8 KB |
| Integrated Ethernet | 10BASE-T MAC+PHY | 10BASE-T MAC+PHY | 10BASE-T MAC+PHY | 10BASE-T MAC+PHY | No |
| CAN Modules | 2x ECAN | 2x ECAN | 2x ECAN | 2x ECAN | 1x ECAN |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | 0 C to +70 C (lower) | -40 C to +85 C |
Bảo phân biệt quan trọng
- Integrated 10BASE-T MAC+PHY eliminates external Ethernet controller cost (vsPIC18F67J10-I/PT)
- 128 KB Flash headroom in pin-compatible upgrade path (vsPIC18F67J60-I/PT)
- Dual ECAN modules for redundant fieldbus comms (vsPIC18F66J55-I/PT)
Ghi chú thiết kế
Route the Ethernet differential pair (TPOUT+/TPOUT- and TPIN+/TPIN-) with controlled 100-ohm differential impedance and keep the pair length-matched within 2 mm. Place the 49.9-ohm RBIAS resistor to VDDRX directly adjacent to pin 63 to set the integrated PHY bias current accurately. Maintain at least 4 mm of copper-free PCB area between the analog AVdd island and the noisy digital TQFP-64 power pins, and place a ferrite bead in series with the VDD5V0 input to suppress switching regulator noise from injecting into the Ethernet PHY supply rail.
Both core Vdd (2.0-3.6 V) and wide-range VDD5V0 (4.2-5.5 V) pins must be bypassed individually. Use one 100 nF X7R ceramic per Vdd pin and one bulk 10 uF tantalum close to the regulator output. The internal 2.5 V regulator that feeds VMGR (Ethernet) and VDDRX must have its own 10 uF + 100 nF capacitor stack on those output pins. Do NOT power the part only via VDD5V0 without the core Vdd rail, as Ethernet MAC logic derives from the internal regulator and requires both supplies for proper operation.
Do not exceed the 25 MHz reference crystal load-capacitance tolerance, as the integrated Ethernet MAC uses that clock to derive TX/RX timings; exceeding 30 ppm mismatch causes link-up failures or packet CRC errors. The MCLR reset pin requires a 10 kohm pull-up to Vdd with a 100 nF capacitor for noise immunity - missing this RC leads to random brown-out resets near the Ethernet isolation barrier. Avoid enabling the LCD charge pump until AVdd stabilizes, or the charge-pump capacitor pin draws inrush current that can momentarily collapse AVdd.
At 40 MHz CPU core and active Ethernet MAC, the PIC18F66J65T-I/PT dissipates approximately 150 mW typical and 250 mW peak under sustained operation. In a thermally constrained enclosure (sealed IP65 field box), provide at least 1 square inch of exposed inner ground copper under the TQFP thermal pad to keep junction below 125 C. At -40 C minimum, allow 50 ms warmup before activating the Ethernet PHY to prevent lock-up of the bias network.
Thông tin tuân thủ
RoHS and REACH compliance confirmed in Mouser distributor listing; automotive AEC-Q100 qualification does not apply to this industrial-grade part (no -V or -Q suffix).
