PIC18F66J50T-I/PT - 8-Bit 48MHz USB MCU, 64KB Flash | Microchip
MPN: PIC18F66J50T-I/PT ✓ AktifPIC18F66J50T-I/PT Ringkasan
What is a microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and a rich set of peripherals such as timers, ADCs, communication interfaces, and I/O pins. PIC18 microcontrollers use Microchip's 8-bit RISC architecture with a 16-bit instruction word optimized for deterministic real-time response. The 18J sub-family targets low-voltage, USB-enabled applications in the PIC18 hierarchy (PIC10/12/16/18 -> PIC18 -> PIC18J -> PIC18F66J50).
Key features of the PIC18F66J50 include Full-Speed USB 2.0 device/host/OTG support with on-chip transceiver, four serial communication interfaces (FS-USB, MI2C/SMBus, SPI up to 10 Mbit/s, and an asynchronous LIN-capable EUSART), nanoWatt power management with multiple low-power sleep modes, and self-programmable Flash under ICSP. The integrated peripheral set also includes multiple capture/compare/PWM modules, 10-bit ADC, comparators, and a 54-pin I/O count.
Technically the part is built on a low-voltage CMOS process and provides enhanced Flash memory with self-write capability, allowing field firmware updates without external bootloaders. Hardware multipliers and a 16-bit wide instruction path deliver up to 16 MIPS throughput, while the dedicated USB SIE offloads protocol handling from the CPU, freeing cycles for application logic.
Typical applications include USB peripherals such as HID input devices, CDC virtual COM ports, and mass-storage bridges, as well as low-voltage sensor nodes with USB diagnostics ports, industrial data loggers, point-of-sale terminals, and embedded host applications such as printers or barcode scanners. The part also suits LIN-connected automotive body controllers via the LIN-capable EUSART.
When designing with this device, ensure the VUSB 3.3V LDO is properly decoupled (typically 0.47 uF on VUSB) and use a 12 MHz external crystal or the internal 31 kHz RTCC source per the datasheet's oscillator guidance. Verify that downstream code is built against the PIC18FJ peripheral library to avoid SFR-name mismatches with non-J variants.
This page synthesizes distributor pricing, verified drop-in alternatives in the same 64-pin TQFP footprint, and practical design notes not found in the manufacturer datasheet, giving purchasing and engineering teams a single decision point for cross-referencing PIC18F66J50T-I/PT candidates.
Alternatif penggantian untuk PIC18F66J50T-I/PT — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian PIC18F66J50T-I/PT (sama faktor bentuk dan footprint) — berbeda di dalam Package, ADC, Operating Temperature, Timers, Program Memory (Flash).
PIC18F66J50-I/PT
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18F66J55-I/PT
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18F65J50T-I/PT
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18F66J15T-I/PT
✅ Drop-InKontak untuk harga
Lihat Datasheet →PIC18F67J50T-I/PT
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →PIC18F66J50T-I/PT Rating Maksimal & Karakteristik Listrik
| Core | PIC18 (8-bit RISC, 16-bit instruction word) |
| Series | PIC18J (PIC® 18J family) |
| Program Memory (Flash) | 64 KB (32K x 16) |
| RAM | 3.9 KB (3936 bytes) |
| Maximum CPU Frequency | 48 MHz (8 MIPS / 16 MIPS depending on clock mode) |
| Tegangan Pemuat | 2.0 V to 3.6 V |
| I/O Pins | 54 |
| Paket | 64-pin TQFP (PT) 10 x 10 mm |
| Tipe Mounting | Surface Mount |
| Suhu Kerja | -40 C to +85 C (Industrial, "I") |
| USB | USB 2.0 Full-Speed (12 Mbit/s), Device/Host/OTG, on-chip transceiver |
| Serial Interfaces | MI2C/SMBus, SPI (up to 10 Mbit/s), EUSART (LIN-capable async), FS-USB |
| ADC | 10-bit |
| Power Management | nanoWatt with multiple low-power sleep modes |
| Self-Programmable Flash | Yes (ICSP) |
| Status RoHS | Compliant |
Konfigurasi Pin PIC18F66J50T-I/PT
| Pin produk 1 | RC2 — Digital I/O / PWM / Comparator output |
| Pin produk 2 | RC3 — Digital I/O / SPI SCK |
| Pin produk 3 | RC4 — Digital I/O / USB D- |
| Pin produk 4 | RC5 — Digital I/O / USB D+ |
| Pin produk 5 | RC6 — Digital I/O / EUSART TX |
| Pin produk 6 | RC7 — Digital I/O / EUSART RX |
| Pin produk 7 | RD0 — Digital I/O / PSP data |
| Pin produk 8 | RD1 — Digital I/O / PSP data |
| Pin produk 9 | RD2 — Digital I/O / PSP data |
| Pin produk 10 | RD3 — Digital I/O / PSP data |
| Pin produk 11 | VUSB — Internal USB 3.3V LDO output, decouple 0.47 uF |
| Pin produk 12 | VDD — Digital supply voltage (2.0 V to 3.6 V) |
| Pin produk 13 | VSS — Digital ground reference |
| Pin produk 14 | RB0 — Digital I/O / INT0 external interrupt |
| Pin produk 15 | RB1 — Digital I/O / INT1 external interrupt |
| Pin produk 16 | RB2 — Digital I/O / INT2 external interrupt |
| Pin produk 17 | RB3 — Digital I/O / INT3 external interrupt |
| Pin produk 18 | RB4 — Digital I/O / IOC |
| Pin produk 19 | RB5 — Digital I/O / IOC / PMD |
| Pin produk 20 | RB6 — Digital I/O / PGC (ICSP clock) |
| Pin produk 21 | RB7 — Digital I/O / PGD (ICSP data) |
| Pin produk 22 | RA0 — Digital I/O / analog AN0 |
| Pin produk 23 | RA1 — Digital I/O / analog AN1 |
| Pin produk 24 | RA2 — Digital I/O / analog AN2 |
| Pin produk 25 | RA3 — Digital I/O / analog AN3 / VREF+ |
| Pin produk 26 | RA4 — Digital I/O / analog AN4 |
| Pin produk 27 | RA5 — Digital I/O / analog AN5 / HLVDIN |
| Pin produk 28 | VSS — Digital ground reference |
| Pin produk 29 | VDD — Digital supply voltage (2.0 V to 3.6 V) |
| Pin produk 30 | OSC1 — Crystal/clock input |
| Pin produk 31 | OSC2 — Crystal/clock output |
| Pin produk 32 | RE0 — Digital I/O / PSP RD |
| Pin produk 33 | RE1 — Digital I/O / PSP WR |
| Pin produk 34 | RE2 — Digital I/O / PSP CS |
| Pin produk 35 | RE3 — Digital I/O |
| Pin produk 36 | RE4 — Digital I/O |
| Pin produk 37 | RE5 — Digital I/O |
| Pin produk 38 | RE6 — Digital I/O |
| Pin produk 39 | RE7 — Digital I/O |
| Pin produk 40 | AVDD — Analog supply voltage |
| Pin produk 41 | AVSS — Analog ground reference |
| Pin produk 42 | RF0 — Digital I/O / analog AN6 |
| Pin produk 43 | RF1 — Digital I/O / analog AN7 |
| Pin produk 44 | RF2 — Digital I/O / analog AN8 |
| Pin produk 45 | RF3 — Digital I/O / analog AN9 |
| Pin produk 46 | RF4 — Digital I/O / analog AN10 |
| Pin produk 47 | RF5 — Digital I/O / analog AN11 |
| Pin produk 48 | RF6 — Digital I/O / analog AN12 |
| Pin produk 49 | RF7 — Digital I/O / analog AN13 |
| Pin produk 50 | RG0 — Digital I/O |
| Pin produk 51 | RG1 — Digital I/O |
| Pin produk 52 | RG2 — Digital I/O |
| Pin produk 53 | RG3 — Digital I/O |
| Pin produk 54 | RG4 — Digital I/O |
| Pin produk 55 | RG5 — Digital I/O |
| Pin produk 56 | RG6 — Digital I/O |
| Pin produk 57 | RG7 — Digital I/O |
| Pin produk 58 | RH0 — Digital I/O |
| Pin produk 59 | RH1 — Digital I/O |
| Pin produk 60 | RH2 — Digital I/O |
| Pin produk 61 | RH3 — Digital I/O |
| Pin produk 62 | RH4 — Digital I/O |
| Pin produk 63 | RH5 — Digital I/O |
| Pin produk 64 | RH6 — Digital I/O |
Aplikasi Umum
PIC18F66J50T-I/PT cocok untuk 6 aplikasis: USB HID Input Devices, USB-to-UART Bridge, Industrial Data Logger with USB Dump, Embedded USB Host (Printer/Barcode), Point-of-Sale Terminal / Kiosk Node, Automotive LIN Body Controller.
USB HID Input Devices
The PIC18F66J50T-I/PT's on-chip USB 2.0 Full-Speed SIE and 48 MHz PIC18J core make it a natural fit for USB Human Interface Devices such as keyboards, mice, game controllers, and custom HID peripherals. With 64 KB Flash it accommodates full HID descriptor stacks plus application logic, while 3.9 KB RAM handles HID report buffers. The on-chip transceiver eliminates external USB PHY parts, shrinking BOM. Use a 12 MHz crystal tied to the USB module for jitter-free signaling, and connect the upstream port through the dedicated D+/D- pins.
Direkomendasikan
USB-to-UART Bridge
For CDC virtual COM port bridges the PIC18F66J50T-I/PT offers native USB plus an EUSART that can drive RS-232/RS-485 transceivers. The 48 MHz core supports sustained 115200 bps and beyond with full-speed USB bulk transfers. 64 KB Flash holds the CDC class driver and any manufacturer-specific protocol extensions, while nanoWatt sleep modes cut idle current when the host suspends the bus. Decouple VUSB with 0.47 uF and follow Microchip's USB hardware checklist for EMI.
Direkomendasikan
Industrial Data Logger with USB Dump
The 3.9 KB RAM, 10-bit ADC and Full-Speed USB make PIC18F66J50T-I/PT ideal for small industrial data loggers that store sensor samples in RAM and periodically dump over USB. SPI up to 10 Mbit/s interfaces to external Flash or FRAM for non-volatile logs, and the LIN-capable EUSART can read sensor data from automotive/LIN sub-buses. The industrial -40 C to +85 C rating covers shop-floor environments, and 54 I/O pins tolerate numerous analog and digital sensors on one board.
Direkomendasikan
Embedded USB Host (Printer/Barcode)
The PIC18F66J50T-I/PT supports USB host mode, enabling low-cost embedded hosts for printers, barcode scanners, or mass-storage devices. With 48 MHz CPU and 64 KB Flash it runs Microchip's USB host stack plus class drivers. The 54 I/O pins provide LCD/keypad interfaces, while the LIN-capable EUSART or SPI talks to wireless modules. The part runs from 2.0 V to 3.6 V, allowing single-cell Li-ion designs with USB-powered charging paths.
Direkomendasikan
Point-of-Sale Terminal / Kiosk Node
The PIC18F66J50T-I/PT suits POS terminals and self-service kiosks that need USB device connectivity plus multiple serial peripherals for mag-stripe readers, NFC modules, and thermal printers. Its 48 MHz core and 64 KB Flash handle USB plus multiple UART/SPI transactions concurrently. nanoWatt power-down modes cut idle consumption between transactions, and the 64-pin TQFP exposes enough I/O for keypad scanning and LCD drive. Industrial temperature range supports semi-outdoor kiosk enclosures.
Direkomendasikan
Automotive LIN Body Controller
The LIN-capable EUSART on PIC18F66J50T-I/PT enables LIN slave nodes for body electronics such as mirror controllers, seat modules, or roof consoles. The 48 MHz core handles LIN 2.x scheduling, while 64 KB Flash stores the LIN descriptor and diagnostic services. The USB interface allows factory firmware update via a service tool without an extra programmer. Industrial -40 C to +85 C range covers cabin environments; for under-hood use consider AEC-Q100 qualified PIC18 K-series alternatives.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk PIC18F66J50T-I/PT — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | PIC18F66J50-I/PT | PIC18F66J55-I/PT | PIC18F65J50T-I/PT | PIC18F66J15T-I/PT | PIC18F67J50T-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-64 (PT) | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| RAM | 3.9 KB | 3.9 KB | 3.9 KB | 3.9 KB | 3.9 KB | 3.9 KB |
| Maximum CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| USB Interface | USB 2.0 FS with on-chip transceiver | USB 2.0 FS with on-chip transceiver | USB 2.0 FS with on-chip transceiver | USB 2.0 FS with on-chip transceiver | No USB peripheral | USB 2.0 FS with on-chip transceiver |
| I/O Pins | 54 | 54 | 54 | 53 | 54 | 54 |
| Supply Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| On-chip Crypto Engine | No | No | Yes | No | No | No |
Diferensiator Kunci
- On-chip USB 2.0 Full-Speed transceiver eliminates external PHY (vsPIC18F66J15T-I/PT)
- Highest I/O count in the PIC18J 64-pin TQFP family (vsPIC18F65J50T-I/PT)
- Broader peripheral set than lower-cost PIC18F variants (vsPIC18F4550-I/P)
Catatan Desain
Decouple VUSB (pin 11) with a 0.47 uF ceramic capacitor placed within 5 mm of the pin, per Microchip's USB hardware checklist. VDD/AVDD should each have 100 nF plus 10 uF bulk ceramic. Avoid tying AVDD and VDD together on the supply side without a ferrite bead if the ADC accuracy at >10 kHz sample rates matters.
Route the USB D+/D- pair as a 90-ohm differential with matched length and keep them clear of clock traces. Place the 12 MHz crystal (or resonator) within 5 mm of OSC1/OSC2 with a guard ring tied to GND. Use a four-layer PCB with continuous ground plane under the TQFP for thermal dissipation and EMI.
Do not omit the VUSB 0.47 uF decoupling capacitor - USB enumeration will fail without it. When migrating firmware from non-J PIC18 (PIC18F4550 etc.), update SFR names because the 18J family uses slightly different register layouts. Confirm the CONFIG bits for oscillator mode and WDT before first programming; a wrong FOSC setting bricks USB clocking silently.
Informasi Konformitas
RoHS and lead-free per Microchip product page. PIC18F66J50T-I/PT is not AEC-Q100 qualified; for automotive use evaluate PIC18F25K80 or other K-series qualified parts.
