PIC18LF46J53T-I/ML - 8-bit USB MCU 64KB Flash 48MHz | Microchip
MPN: PIC18LF46J53T-I/ML ✓ فعالPIC18LF46J53T-I/ML نمای کلی
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), data memory (RAM), and a rich set of peripherals such as timers, communication interfaces, and analog converters. PIC18LF46J53 belongs to the PIC18 8-bit RISC family, the low-power (LF) variant of the J-series, and within the power management hierarchy it sits at the embedded control IC level, sitting above simple logic ICs and below MPU-class devices. This places the part in the broader semiconductor hypernym chain: MCU -> 8-bit MCU -> PIC18 -> PIC18F/LF J-series -> PIC18LF46J53.
Key differentiating features include 34 programmable I/O pins, a 12-bit A/D converter with up to 13 input channels, two analog comparators, two UART/USART, SPI and I2C (MSSP) peripherals, a full-speed USB 2.0 device/host/OTG transceiver, two 8-bit and three 16-bit timers, and nanoWatt XLP technology for sub-microamp sleep currents. The internal 31 kHz and 8 MHz oscillators with PLL flexibility reduce external component count. The "J" series core runs from 2.0 V to 3.6 V versus the 2.0 V to 5.5 V of classic PIC18F, making it suited to low-voltage USB and battery designs.
The architecture uses a modified Harvard RISC core with 16-bit opcodes and a 16-bit data path, enabling single-cycle 16-bit fetches. With hardware multiplier, deterministic interrupt latency, and instruction pre-fetch, the device achieves 12 MIPS at 48 MHz while still supporting nanoWatt sleep modes useful for battery-powered peripherals. The integrated USB SIE eliminates the external PHY requirement for low-speed and full-speed USB.
Typical applications include USB Human Interface Devices (HID), CDC serial bridges, USB audio peripherals, low-power sensor nodes, and consumer electronics with USB charging/data ports. The exposed pad (EP) on the VQFN provides a low-thermal-resistance path (~28 C/W) for higher-power USB-host applications.
When designing with this MCU, place the decoupling capacitors as close as possible to VDD/VSS pairs and connect the exposed pad to a contiguous ground plane for thermal dissipation. For USB applications, the D+/D- traces must be 45-ohm impedance-controlled and length-matched within 150 mil.
This page synthesizes distributor pricing, drop-in alternatives from the PIC18 J-series family, and practical design notes not found in the bare manufacturer datasheet.
جایگزین‌های drop-in برای PIC18LF46J53T-I/ML — 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 PIC18LF46J53T-I/ML (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در ADC, Package, Communication, Core, Timers.
PIC18LF46J53-I/ML
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F46J53T-I/ML
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F47J53T-I/ML
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18F47J53-I/ML
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF46J50-I/ML
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF46J13-I/ML
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF46J53T-I/ML حداکثر مقادیر مجاز و مشخصات الکتریکی
| Family | PIC18F/LF J-series (PIC18 8-bit) |
| Core | PIC18 RISC, 8-bit data path, 16-bit instruction |
| Program Memory (Flash) | 64 KB (32K x 16) |
| RAM | 3.8 KB (3800 bytes) |
| Data EEPROM | 0 bytes (not present on J-series) |
| Max CPU Speed | 48 MHz (12 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| I/O Pins | 34 programmable |
| USB | USB 2.0 Full-Speed OTG Device/Host/Embedded |
| ADC | 12-bit, up to 13 input channels |
| Comparators | 2 analog comparators |
| Communication | 2x UART, SPI, I2C (MSSP) |
| Timers | 2x 8-bit, 3x 16-bit |
| بسته‌بندی | 44-pin VQFN with Exposed Pad (ML) 8x8 mm |
| دمای کاری | -40C to +85C (Industrial) |
| نوع نصب | Surface Mount |
| سطح MSL | 3 (168 hours) |
| وضعیت RoHS | Compliant |
| Lead-Free | Yes |
پیکربندی پین PIC18LF46J53T-I/ML
| پین 1 | RB5/KBI1/PGC — Port B bit 5 / Keyboard interrupt / ICSP clock |
| پین 2 | RB4/KBI0/PGD — Port B bit 4 / Keyboard interrupt / ICSP data |
| پین 3 | RB3/AN9/CANRX/CCP2 — Port B bit 3 / ADC input / ECAN RX / CCP2 |
| پین 4 | RB2/AN8/CANTX — Port B bit 2 / ADC input / ECAN TX |
| پین 5 | RB1/AN7/C1INA/RX1/DT1 — Port B bit 1 / ADC / Comparator input / EUSART1 RX |
| پین 6 | RB0/AN6/C1INB — Port B bit 0 / ADC input / Comparator input |
| پین 7 | RA5/AN4/C2INB/T1CKI — Port A bit 5 / ADC input / Comparator / Timer1 clock |
| پین 8 | RA4/AN3/C1OUT — Port A bit 4 / ADC input / Comparator output |
| پین 9 | RA3/AN2/VREF+ — Port A bit 3 / ADC input / ADC VREF+ |
| پین 10 | RA2/AN1/C2OUT — Port A bit 2 / ADC input / Comparator output |
| پین 11 | RA1/AN0/C1INA — Port A bit 1 / ADC input / Comparator input |
| پین 12 | RA0/AN0/ULPWU — Port A bit 0 / ADC input / Ultra-Low-Power Wake-up |
| پین 13 | VSS — Ground reference |
| پین 14 | VDD — Positive supply (2.0-3.6V) |
| پین 15 | RC7/RX1/DT1 — Port C bit 7 / EUSART1 RX |
| پین 16 | RC6/TX1/CK1 — Port C bit 6 / EUSART1 TX |
| پین 17 | RC5/D+/VP — Port C bit 5 / USB D+ / ADC programming voltage |
| پین 18 | RC4/D-/VM — Port C bit 4 / USB D- / ADC programming mode |
| پین 19 | RC3/AN12/SCL1 — Port C bit 3 / ADC input / I2C clock |
| پین 20 | RC2/AN11/SDA1 — Port C bit 2 / ADC input / I2C data |
| پین 21 | RC1/AN10/CCP2 — Port C bit 1 / ADC input / CCP2 |
| پین 22 | RC0/AN12 — Port C bit 0 / ADC input |
| پین 23 | VUSB — USB internal voltage regulator bypass |
| پین 24 | RD7 — Port D bit 7 |
| پین 25 | RD6 — Port D bit 6 |
| پین 26 | RD5 — Port D bit 5 |
| پین 27 | RD4 — Port D bit 4 |
| پین 28 | RD3 — Port D bit 3 |
| پین 29 | RD2 — Port D bit 2 |
| پین 30 | RD1 — Port D bit 1 |
| پین 31 | RD0 — Port D bit 0 |
| پین 32 | VSS — Ground reference |
| پین 33 | VDD — Positive supply (2.0-3.6V) |
| پین 34 | RE3/RP19 — Port E bit 3 |
| پین 35 | RE2/CS — Port E bit 2 / SPI chip select |
| پین 36 | RE1/WR — Port E bit 1 / External memory write |
| پین 37 | RE0/RD — Port E bit 0 / External memory read |
| پین 38 | RF7 — Port F bit 7 |
| پین 39 | RF6 — Port F bit 6 |
| پین 40 | RF5 — Port F bit 5 |
| پین 41 | RF4 — Port F bit 4 |
| پین 42 | RF3/AN13 — Port F bit 3 / ADC input |
| پین 43 | RF2 — Port F bit 2 |
| پین 44 | RF1 — Port F bit 1 |
| پین EP | EP — Exposed thermal pad - connect to ground |
کاربردهای معمول
PIC18LF46J53T-I/ML مناسب است برای 6 کاربردs: USB HID Peripheral (Keyboard/Mouse/Gamepad), USB CDC Serial Bridge (USB-to-UART Converter), USB Audio Class 1.0 Peripheral (Headset/Speaker), Low-Power Sensor Hub with USB Charging Port, Industrial USB Data Logger, USB Host / Embedded Host (Mass Storage, HID Dongles).
USB HID Peripheral (Keyboard/Mouse/Gamepad)
The PIC18LF46J53T-I/ML is well matched to USB HID class devices because its integrated USB 2.0 Full-Speed SIE plus 12 MIPS core can handle HID report generation at 1 kHz without CPU loading. With 64 KB Flash it fits standard HID report descriptors, multiple keymaps, and macro logic for gaming peripherals, while the 3.8 KB RAM holds HID ring buffers and debounce state. Operates directly from the USB 5 V line through a 3.3 V LDO, drawing <25 mA in HID active mode. Recommended partners include a 3.3 V LDO (Microchip MCP1700), ESD protection (USBLC6-2SC6), and a low-cost 12 MHz crystal with the internal PLL driving the core to 48 MHz for 12 MIPS. NanoWatt XLP sleep reduces idle current to sub-microamp levels for battery-powered wireless HID dongles.
پیشنهادی
USB CDC Serial Bridge (USB-to-UART Converter)
The PIC18LF46J53T-I/ML serves as a USB-to-UART bridge, using its integrated USB SIE plus a hardware UART to provide CDC ACM class conversion. This eliminates external USB-to-serial ICs like the FT232, saving cost and PCB area. The 48 MHz core sustains CDC line speeds up to 921600 baud without dropped bytes, and 64 KB Flash holds CDC descriptors and command parsers. The 2.0-3.6V supply lets the MCU draw power directly from USB VBUS through a 3.3V LDO, supporting USB suspend current requirements with nanoWatt XLP sleep. Compared to dedicated USB-UART bridges, this approach adds programmability for custom IO commands while keeping the BOM simple. Pair with a Microchip MCP1700 LDO and an external 12 MHz crystal.
پیشنهادی
USB Audio Class 1.0 Peripheral (Headset/Speaker)
For USB audio peripherals, the PIC18LF46J53T-I/ML implements UAC1 isochronous endpoints, driving PWM audio directly to a class-D amplifier or interfacing an external codec over I2S. The 12 MIPS core handles UAC1 descriptor handling, sample rate conversion, and HID volume controls simultaneously. With 64 KB Flash you can fit the full UAC1 stack plus custom DSP, and 3.8 KB RAM supports double-buffered isochronous packets at 48 kHz/16-bit. The 12-bit ADC provides microphone input for USB headsets. The exposed pad of the VQFN package keeps junction temperature low during sustained USB host operation. For 24-bit/96 kHz paths, consider the higher-performance dsPIC33 or move to an STM32 Cortex-M4 platform.
پیشنهادی
Low-Power Sensor Hub with USB Charging Port
The PIC18LF46J53T-I/ML acts as a low-power sensor hub that aggregates I2C/SPI sensor data and exposes it to a host over USB, while also managing a lithium battery charger over USB VBUS. NanoWatt XLP technology brings idle current below 1 uA, critical for battery-powered wearables and IoT edge nodes. The 12-bit ADC with 13 channels can directly read analog sensor outputs alongside digital sensor interfaces. The 64 KB Flash accommodates USB stack plus sensor fusion algorithms. Its 2.0-3.6V range lets it run directly from a single Li-ion cell with no boost regulator. Pair with a Microchip MCP73831 Li-ion charger IC for USB-powered rechargeable designs.
پیشنهادی
Industrial USB Data Logger
The PIC18LF46J53T-I/ML is well-suited to industrial USB data loggers that stream 4-20 mA sensor readings, thermocouple data, or Modbus RTU over USB to a host PC. The 12-bit ADC with 13 channels reads multiple analog sensors simultaneously, while the UART/USART interfaces to RS-485 transceivers for industrial protocols. 64 KB Flash stores USB CDC stack plus Modbus handlers and logging firmware. The industrial -40C to +85C temperature range allows deployment in factory floors, outdoor enclosures, and HVAC cabinets. Pair with an ADM2587E isolated RS-485 transceiver for high-noise industrial environments, and add external FRAM like Cypress FM25V01 for non-volatile log storage.
پیشنهادی
USB Host / Embedded Host (Mass Storage, HID Dongles)
The PIC18LF46J53T-I/ML's integrated USB OTG controller enables embedded USB host operation, supporting USB mass-storage devices, keyboards, and mice without an external USB hub. The 48 MHz core sustains USB host stack plus a FAT12/16 file system, allowing the MCU to read data from USB flash drives in industrial data-logging or kiosk applications. With 64 KB Flash the file-system and USB host stack fit comfortably, leaving room for application code. The 3.3V VBUS power-switch requirement is met by an external TPS2051B or MIC2026 load switch. For designs that need full host + device USB on the same port, the J53's OTG support eliminates the need for a separate USB hub IC.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC18LF46J53T-I/ML — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC18LF46J53-I/ML | PIC18F46J53T-I/ML | PIC18F47J53T-I/ML | PIC18F47J53-I/ML | PIC18LF46J50-I/ML |
|---|---|---|---|---|---|---|
| Package | 44-VQFN EP (ML) 8x8mm | 44-VQFN EP (ML) - same | 44-VQFN EP (ML) - same | 44-VQFN EP (ML) - same | 44-VQFN EP (ML) - same | 44-VQFN EP (ML) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 64 KB | 64 KB | 64 KB | 128 KB | 128 KB | 64 KB |
| RAM | 3.8 KB | 3.8 KB | 3.8 KB | 3.8 KB | 3.8 KB | 3.8 KB |
| USB | Yes (Full-Speed OTG) | Yes (Full-Speed OTG) | Yes (Full-Speed OTG) | Yes (Full-Speed OTG) | Yes (Full-Speed OTG) | Yes (Full-Speed) |
| Supply Voltage | 2.0-3.6 V (LF) | 2.0-3.6 V (LF) | 2.0-3.6 V (F, 5V tol I/O) | 2.0-3.6 V (F, 5V tol I/O) | 2.0-3.6 V (F, 5V tol I/O) | 2.0-3.6 V (LF) |
| Max Frequency | 48 MHz (12 MIPS) | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
تفاوت‌های کلیدی
- Integrated USB 2.0 Full-Speed OTG with no external PHY required (در مقابلPIC18LF46J13-I/ML)
- Double the Flash program memory for firmware expansion headroom (در مقابلPIC18LF46J53T-I/ML (vs PIC18F47J53T-I/ML))
- Industrial temperature range with exposed-pad VQFN for compact designs (در مقابلPIC18F46K22-I/PT)
یادداشت‌های طراحی
Estimated: At active 48 MHz operation with USB host mode drawing ~25 mA, the MCU at 3.3V dissipates roughly 82.5 mW. For USB device-only suspend mode, current drops to under 1 uA with nanoWatt XLP sleep. Place a 100 nF decoupling capacitor as close as possible to each VDD/VSS pin pair (the 44-VQFN has multiple VDD/VSS pins), and a 4.7 uF bulk capacitor on the main 3.3V rail. Add a ferrite bead between VUSB and VDD to isolate USB noise from the digital core supply.
The 44-pin VQFN has an exposed pad (EP) that MUST be soldered to a contiguous ground plane for both thermal dissipation and electrical grounding. Without proper EP soldering, junction temperature can rise 25-40 C during USB host operation, risking thermal shutdown. For USB applications, route the D+ and D- differential pair with 90-ohm differential impedance and length-match within 150 mil (3.8 mm) of each other. Use a ground keep-out under the differential pair and stitch vias every 200 mil along the trace edges.
When using the internal 31 kHz low-power oscillator for RTC-like functions, keep the SOSC pins (RA4/RA5) away from high-frequency switching traces and surrounded by a ground ring to minimize noise pickup. For the 12 MHz external crystal, place the load capacitors (typically 15-30 pF) within 3 mm of the OSC1/OSC2 pins. If using the internal 8 MHz oscillator with PLL (HF-INTOSC mode), configure the PLL for 48 MHz operation by setting OSCTUNE.PLLEN and using the PLL block - this eliminates the external crystal entirely for cost-sensitive designs.
Do not confuse the LF and F variants: PIC18LF46J53T-I/ML does NOT have 5V-tolerant I/O. Connecting 5V signals directly to any I/O pin can damage the MCU. Use the PIC18F46J53T-I/ML (F variant) if your design requires 5V-tolerant digital inputs. Additionally, the J-series requires careful configuration of CONFIG3L for fail-safe clock monitor and 2-speed startup; leaving these bits in default state can cause USB enumeration failures in noisy environments. Always validate USB compliance with a USB-IF certified analyzer before volume production.
For USB full-speed operation, the D+/D- pair must meet USB 2.0 spec requirements: 90-ohm differential impedance, common-mode voltage 0.8V to 2.5V, and rise/fall times between 4 ns and 20 ns. Series termination resistors are NOT required on the D+/D- pins as the MCU has internal impedance matching. Place the 15 kohm pull-down resistor on D- to bias the line during USB reset signaling. Add a 1 nF capacitor in parallel with VUSB (pin 23) to stabilize the internal USB voltage regulator output.
اطلاعات انطباق
RoHS compliant per Microchip product page and Besenchips distributor listing. Not AEC-Q100 qualified; for automotive applications consider PIC18F46J53T-I/ML or dedicated automotive MCUs. Halogen-free status not explicitly confirmed in verified data.
