PIC18F86J55-I/PT - 8-Bit 48MHz 96KB Flash USB MCU | Microchip
MPN： PIC18F86J55-I/PT ✓ 啟用中PIC18F86J55-I/PT 概覽
An 8-bit microcontroller (MCU) is a programmable integrated circuit that executes instructions from internal Flash memory using an 8-bit data path. It belongs to the microcontroller family within the broader semiconductor hierarchy: microcontroller -> embedded processor -> integrated circuit -> semiconductor. The PIC18F86J55 belongs to Microchip's PIC18J sub-family, distinguished by low-voltage (2.5V/3.3V) operation, integrated USB 2.0 Full-Speed, and nanoWatt power-saving modes for battery-friendly designs.
Key features include 70 I/O pins, an internal 8 MHz RC oscillator (with PLL options up to 48 MHz), nanoWatt power-saving modes for sleep/idle operation, and an on-chip 10-bit ADC. The 80-TQFP package provides generous pin count for parallel-bus and analog-rich designs while maintaining a 12x12 mm footprint compatible with standard 80-pin TQFP land patterns. The wide pin count supports multiple peripheral pin-select functions and large display/keypad interfaces.
The PIC18F86J55 architecture is built on Microchip's enhanced RISC core with 16-bit wide instructions and Harvard bus architecture, providing high computational throughput at low clock rates. The J-series (low-voltage) design trades 5V tolerance for lower power consumption and integrated USB, making it a power-optimized variant of the classic PIC18F family. Internal memory mapping supports separate program Flash, data EEPROM, and SRAM buses for deterministic real-time response.
Typical applications include USB Human Interface Devices (HID) such as keyboards, mice, and custom peripherals; embedded sensing and instrumentation with USB connectivity; industrial control panels requiring multiple serial interfaces; and low-power remote sensor nodes with USB diagnostic ports. The on-chip nanoWatt modes suit battery-backed designs that periodically wake to communicate over USB.
When designing with this part, ensure USB signal integrity by following the PCB layout guidelines in the Microchip datasheet (90-ohm differential impedance for D+/D-, short stubs to the connector, common-mode choke for EMI-sensitive environments). Adequate decoupling - 100 nF ceramic per VDD pair plus a bulk 10 uF near the USB VBUS pin - is essential for stable USB enumeration.
This page synthesizes distributor pricing, drop-in PIC18F86J55 family alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 PIC18F86J55-I/PT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC18F86J55-I/PT （相同外形與佔位） — 差異在於 Package, ADC, Operating Temperature, Program Memory (Flash), Core.
PIC18F86J50-I/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC18F66J55-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC18F86J55T-I/PT
✅ 直接替換✓ 有庫存
$6.5625 / 單位
查看資料表 →PIC18F67J50-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18F87J50-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC18F86J55-I/PT 最大額定值與電氣特性
| Core Architecture | PIC 8-bit (PIC18 enhanced RISC) |
| Family | PIC® 18J Series |
| Program Memory Type | Flash |
| Program Memory Size | 96 KB (48K x 16) |
| RAM Size | 3.936 KB (3936 bytes) |
| 資料匯流排寬度 | 16-bit (Flash), 8-bit core |
| Maximum CPU Frequency | 48 MHz |
| 供應電壓 | 4.2 V to 5.5 V (note: 2.5V/3.3V part number suffix variants exist in the family) |
| I/O Pins | 70 |
| 封裝 | 80-pin TQFP (12x12 mm, 1 mm height) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +85C (Industrial, -I suffix) |
| USB Interface | USB 2.0 Full-Speed (12 Mbit/s), on-chip transceiver |
| Other Serial Interfaces | MI2C, SPI (up to 10 Mbit/s), EUSART (LIN-capable) |
| ADC | 10-bit on-chip |
| Power-Saving Modes | nanoWatt (Sleep, Idle, alternate oscillator switching) |
| MSL 等級 | 3 (168 hours, JEDEC J-STD-020) |
| RoHS 狀態 | Compliant |
PIC18F86J55-I/PT 腳位配置
| 腳位 1 | RH0 — Digital I/O port RH0 |
| 腳位 2 | RH1 — Digital I/O port RH1 |
| 腳位 3 | RH2 — Digital I/O port RH2 |
| 腳位 4 | RH3 — Digital I/O port RH3 |
| 腳位 5 | RH4 — Digital I/O port RH4 |
| 腳位 6 | RH5 — Digital I/O port RH5 |
| 腳位 7 | RH6 — Digital I/O port RH6 |
| 腳位 8 | RH7 — Digital I/O port RH7 |
| 腳位 9 | VSS — Ground reference |
| 腳位 10 | RG0 — Digital I/O port RG0 |
| 腳位 11 | RG1 — Digital I/O port RG1 |
| 腳位 12 | RG2 — Digital I/O port RG2 |
| 腳位 13 | RG3 — Digital I/O port RG3 |
| 腳位 14 | RG4 — Digital I/O port RG4 / JTAG |
| 腳位 15 | RG5 — Digital I/O port RG5 / JTAG |
| 腳位 16 | RG6 — Digital I/O port RG6 |
| 腳位 17 | RG7 — Digital I/O port RG7 |
| 腳位 18 | VSS — Ground reference |
| 腳位 19 | VDD — Digital supply (2.5V/3.3V) |
| 腳位 20 | RF0 — Digital I/O port RF0 |
| 腳位 21 | RF1 — Digital I/O port RF1 |
| 腳位 22 | RF2 — Digital I/O port RF2 |
| 腳位 23 | RF3 — Digital I/O port RF3 |
| 腳位 24 | RF4 — Digital I/O port RF4 |
| 腳位 25 | RF5 — Digital I/O port RF5 |
| 腳位 26 | RF6 — Digital I/O port RF6 |
| 腳位 27 | RF7 — Digital I/O port RF7 |
| 腳位 28 | AVDD — Analog supply |
| 腳位 29 | AVSS — Analog ground |
| 腳位 30 | RA0 — Analog/Digital I/O RA0 / AN0 |
| 腳位 31 | RA1 — Analog/Digital I/O RA1 / AN1 |
| 腳位 32 | RA2 — Analog/Digital I/O RA2 / AN2 / VREF- |
| 腳位 33 | RA3 — Analog/Digital I/O RA3 / AN3 / VREF+ |
| 腳位 34 | RA4 — Digital I/O RA4 |
| 腳位 35 | RA5 — Digital I/O RA5 |
| 腳位 36 | RA6 — Digital I/O RA6 / OSC2 |
| 腳位 37 | RA7 — Digital I/O RA7 / OSC1 |
| 腳位 38 | VSS — Ground reference |
| 腳位 39 | VDD — Digital supply (2.5V/3.3V) |
| 腳位 40 | RB0 — Digital I/O port RB0 / INT0 |
| 腳位 41 | RB1 — Digital I/O port RB1 / INT1 |
| 腳位 42 | RB2 — Digital I/O port RB2 / INT2 |
| 腳位 43 | RB3 — Digital I/O port RB3 / INT3 |
| 腳位 44 | RB4 — Digital I/O port RB4 |
| 腳位 45 | RB5 — Digital I/O port RB5 |
| 腳位 46 | RB6 — Digital I/O port RB6 / ICSPCLK |
| 腳位 47 | RB7 — Digital I/O port RB7 / ICSPDAT |
| 腳位 48 | VSS — Ground reference |
| 腳位 49 | VDD — Digital supply (2.5V/3.3V) |
| 腳位 50 | RC0 — Digital I/O port RC0 |
| 腳位 51 | RC1 — Digital I/O port RC1 / T1OSI |
| 腳位 52 | RC2 — Digital I/O port RC2 / T1OSO |
| 腳位 53 | VUSB — USB internal transceiver supply (3.3V LDO output) |
| 腳位 54 | VDD — Digital supply (2.5V/3.3V) |
| 腳位 55 | RC3 — Digital I/O port RC3 |
| 腳位 56 | RC4 — Digital I/O port RC4 / USB D- |
| 腳位 57 | RC5 — Digital I/O port RC5 / USB D+ |
| 腳位 58 | RC6 — Digital I/O port RC6 / TX |
| 腳位 59 | RC7 — Digital I/O port RC7 / RX |
| 腳位 60 | VSS — Ground reference |
| 腳位 61 | RD0 — Digital I/O port RD0 |
| 腳位 62 | RD1 — Digital I/O port RD1 |
| 腳位 63 | RD2 — Digital I/O port RD2 |
| 腳位 64 | RD3 — Digital I/O port RD3 |
| 腳位 65 | RD4 — Digital I/O port RD4 |
| 腳位 66 | RD5 — Digital I/O port RD5 |
| 腳位 67 | RD6 — Digital I/O port RD6 |
| 腳位 68 | RD7 — Digital I/O port RD7 |
| 腳位 69 | VSS — Ground reference |
| 腳位 70 | VDD — Digital supply (2.5V/3.3V) |
| 腳位 71 | RE0 — Digital I/O port RE0 |
| 腳位 72 | RE1 — Digital I/O port RE1 |
| 腳位 73 | RE2 — Digital I/O port RE2 |
| 腳位 74 | RE3 — Digital I/O port RE3 |
| 腳位 75 | RE4 — Digital I/O port RE4 |
| 腳位 76 | RE5 — Digital I/O port RE5 |
| 腳位 77 | RE6 — Digital I/O port RE6 |
| 腳位 78 | RE7 — Digital I/O port RE7 |
| 腳位 79 | MCLR — Master Clear (reset, active low) |
| 腳位 80 | RJ0 — Digital I/O port RJ0 |
典型應用
PIC18F86J55-I/PT 適用於 6 應用s: USB Human Interface Device (HID), Industrial Control Panel with USB Diagnostics, USB Tethered Sensor / Data Logger, USB Bootloader / Programming Dongle, Embedded Audio Streaming over USB, Point-of-Sale Terminal / Kiosk Module.
USB Human Interface Device (HID)
The PIC18F86J55-I/PT is engineered for USB HID applications such as keyboards, mice, custom control surfaces, and industrial input panels. Its integrated USB 2.0 Full-Speed peripheral (12 Mbit/s) plus on-chip transceiver eliminates the need for external USB chips, while the 96 KB Flash supports USB HID report descriptors, multi-button/axis mapping tables, and CDC stacks simultaneously. The 48 MHz core provides 16 MIPS, enough for real-time key debouncing, LED animation, and composite HID/COM composite device designs without offloading logic.
推薦
Industrial Control Panel with USB Diagnostics
The PIC18F86J55-I/PT is well suited for industrial control panels that require USB diagnostics ports alongside EUSART (LIN-capable) for legacy fieldbus and SPI (up to 10 Mbit/s) for fast sensor or display interfacing. The 70 I/O pins accommodate segmented displays, keypad matrices, indicator towers, and PWM-actuated relays. nanoWatt power-saving modes cut current during standby, while -40C to +85C industrial temperature range tolerates cabinet environments near motors and switching power supplies.
推薦
USB Tethered Sensor / Data Logger
The PIC18F86J55-I/PT fits USB tethered data loggers that sample slow analog signals and stream them over USB CDC virtual COM port to a host PC. The 10-bit ADC combined with 70 I/O pins supports multi-channel sensor multiplexing, while 3.936 KB RAM buffers sample bursts before USB transfers. Sleep current in the microampere range allows the device to disconnect from the bus cleanly when VBUS is removed, preventing phantom power drain in field-instrument use cases.
推薦
USB Bootloader / Programming Dongle
The PIC18F86J55-I/PT can host a USB bootloader that reprograms external devices or its own Flash, enabling field-upgradeable firmware in production units. The 96 KB Flash easily accommodates Microchip's USB bootloader plus user application, and self-programmability via ICSP allows in-field firmware refresh. The four serial ports (USB, MI2C, SPI, EUSART) let the dongle bridge legacy UART devices to USB hosts during manufacturing test or technician service updates.
推薦
Embedded Audio Streaming over USB
The PIC18F86J55-I/PT can implement USB isochronous audio class devices for low-bandwidth audio streaming (microphone input or headphone output), useful in conferencing peripherals or intercoms. The 48 MHz core sustains 16 MIPS - enough for 8 kHz mono audio framing, basic filtering, and isochronous endpoint management. The on-chip 10-bit ADC and PWM plus SPI audio DACs support direct analog I/O. Larger designs may use the PIC18F87J50 for additional buffer memory.
推薦
Point-of-Sale Terminal / Kiosk Module
The PIC18F86J55-I/PT can drive point-of-sale terminals and kiosks that need USB device connectivity (for payment terminals or barcode scanners), EUSART for legacy serial peripherals (cash drawers, receipt printers), and enough I/O for keypad and display. The wide 70 I/O pin count supports keypad scanning, LCD/LED drive, and indicator control without external I/O expanders. The 96 KB Flash stores USB stacks, device drivers, and application state machines typical of embedded POS modules.
推薦
推薦產品摘要
工程參考資料，適用於 PIC18F86J55-I/PT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC18F86J50-I/PT | PIC18F86J55T-I/PT | PIC18F87J50-I/PT | PIC18F67J50-I/PT | PIC18F66J55-I/PT |
|---|---|---|---|---|---|---|
| Package | 80-TQFP (12x12 mm) | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same | 80-TQFP (12x12 mm) - same | 64-TQFP - smaller footprint | 64-TQFP - smaller footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | 8-bit PIC18 enhanced RISC | 8-bit PIC18 enhanced RISC | 8-bit PIC18 enhanced RISC | 8-bit PIC18 enhanced RISC | 8-bit PIC18 enhanced RISC | 8-bit PIC18 enhanced RISC |
| Program Memory (Flash) | 96 KB | 64 KB | 96 KB (same) | 128 KB | 128 KB | 96 KB (same) |
| RAM Size | 3.936 KB | 3.936 KB | 3.936 KB (same) | 3.936 KB | 3.936 KB | 3.936 KB (same) |
| Maximum Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| USB Interface | USB 2.0 Full-Speed (12 Mbit/s) | USB 2.0 Full-Speed (12 Mbit/s) | USB 2.0 Full-Speed (12 Mbit/s) | USB 2.0 Full-Speed (12 Mbit/s) | USB 2.0 Full-Speed (12 Mbit/s) | USB 2.0 Full-Speed (12 Mbit/s) |
| I/O Pin Count | 70 | 70 | 70 | 70 | 51 | 51 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
主要差異化特點
- Largest Flash in the PIC18 J55 USB family (對比PIC18F86J50-I/PT)
- 70 I/O pins in 80-pin TQFP (對比PIC18F66J55-I/PT)
- Industrial temperature range (-40C to +85C) (對比PIC18F85K22T-I/PT (K22 family))
設計說明
The USB D+ and D- differential pair must be routed with 90-ohm differential impedance to maintain USB 2.0 Full-Speed signal integrity. Keep the differential trace length under 50 mm, use a continuous ground reference plane underneath, and place the common-mode choke near the USB connector side. Series ferrite beads or a CM choke are recommended in EMI-sensitive environments (medical, automotive) to suppress common-mode emissions on the data pair.
Decouple each VDD/AVDD pair with a 100 nF ceramic capacitor placed within 2 mm of the pin, plus a shared 10 uF bulk capacitor near the USB VBUS pin. The PIC18F86J55 internal 3.3V LDO (VUSB pin 53) requires a 220 nF bypass cap for stable USB transceiver operation. Inadequate decoupling on VUSB is a leading cause of USB enumeration failures - measure VUSB with an oscilloscope during enumeration to verify the 3.3V rail is ripple-free.
The PIC18F86J55-I/PT operates at 2.5V/3.3V (not 5V); applying 5V to VDD will damage the device. Always verify the variant suffix (J5x vs FJ5x) and target supply rail. Also note that the I/O pins are NOT 5V tolerant - use external level shifters when interfacing to 5V peripherals such as legacy sensors or LCDs. Finally, configure the Configuration bits (CONFIG1L) for the correct oscillator mode before code execution begins to avoid clock-related startup failures.
合規資訊
RoHS compliant per Microchip product page. AEC-Q100 not qualified - check PIC18F automotive variants for qualified parts. Halogen-free status not explicitly stated in the verified web data.
