PIC18LF27J53-I/SP - 8-bit 48MHz USB MCU, 128KB Flash | Microchip
MPN: PIC18LF27J53-I/SP ✓ فعالPIC18LF27J53-I/SP نمای کلی
An 8-bit microcontroller (MCU) is a programmable single-chip computer that processes data in 8-bit units and integrates CPU, RAM, non-volatile Flash memory, and peripherals such as timers, ADC, and communication interfaces. Within the broader semiconductor hierarchy, the PIC18LF27J53 belongs to the PIC18 family (8-bit PIC RISC architecture) -> microcontroller -> microcontrollers & processors -> integrated circuit. The 'LF' prefix designates the low-voltage (2.0-3.6 V) variant, suitable for battery-powered designs, while 'J53' marks the USB-enabled sub-family with nanoWatt XLP technology.
Key features include 128 KB self-programmable Flash, 4 KB RAM, an integrated USB 2.0 full-speed transceiver, 10-bit ADC with up to 13 channels, two comparators, three 16-bit timers, two UART, two SPI, two I2C, and nanoWatt XLP power management with deep sleep. The device supports up to 25 mA source/sink on I/O and includes CTMU for capacitive touch sensing.
The PIC18LF27J53 uses Microchip's enhanced Harvard RISC architecture with a modified 16-bit instruction word executed in two bytes of Flash, achieving 12 MIPS at 48 MHz while consuming only nanoWatts in sleep. The integrated USB 2.0 SIE eliminates external PHY requirements and the on-chip 3.3 V regulator simplifies dual-rail designs.
Typical applications include USB peripherals (HID, CDC, custom device classes), low-power sensor nodes with USB charging, capacitive touch user interfaces, industrial data loggers, and consumer electronics requiring USB connectivity with extended battery life.
When designing with this part, observe the 2.0-3.6 V supply constraint for the 'LF' variant and the 28-pin SPDIP footprint's through-hole clearance. For SMT designs, consider the SOIC-28 and QFN-28 package variants within the same PIC18LF27J53 family.
جایگزین‌های drop-in برای PIC18LF27J53-I/SP — 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 PIC18LF27J53-I/SP (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در ADC, Package, I/O Pins, Mounting Type, Core Architecture.
PIC18LF27J53-I/SO
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF26J53-I/SP
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC18LF27J13-I/SP
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF26J53-I/ML
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF46J53-I/SP
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC18LF26J13-I/SP
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC18LF27J53-I/SP حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core Architecture | PIC (8-bit RISC) |
| Family | PIC18FxxJxx (PIC18 J-series with USB) |
| Series | PIC18LF27J53 |
| CPU Speed | 48 MHz (12 MIPS) |
| Program Memory (Flash) | 128 KB |
| RAM | 4 KB |
| ولتاژ تغذیه | 2.0 V to 3.6 V |
| دمای کاری | -40C to +85C (Industrial) |
| I/O Pins | 25 (max digital I/O) |
| USB | USB 2.0 Full-Speed (12 Mbps) Device, integrated SIE |
| ADC | 10-bit, 13 channels |
| Comparators | 2 |
| Timers | 3 x 16-bit + 1 x 8-bit |
| UART | 2 |
| SPI | 2 |
| I2C (MSSP) | 2 |
| بسته‌بندی | 28-pin SPDIP (0.300") |
| نوع نصب | Through-Hole (DIP) |
| وضعیت RoHS | Compliant |
| سطح MSL | Not applicable (through-hole) |
پیکربندی پین PIC18LF27J53-I/SP
| پین 1 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| پین 2 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| پین 3 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| پین 4 | RA3/AN3 — Digital I/O / Analog input channel 3 |
| پین 5 | RA4/AN4 — Digital I/O / Analog input channel 4 / Timer0 clock |
| پین 6 | RA5/AN5 — Digital I/O / Analog input channel 5 |
| پین 7 | VSS — Ground reference |
| پین 8 | OSC1/CLKI/RA7 — External oscillator input / Digital I/O |
| پین 9 | OSC2/CLKO/RA6 — External oscillator output / Digital I/O |
| پین 10 | RC0 — Digital I/O / PWM output |
| پین 11 | RC1 — Digital I/O / PWM output |
| پین 12 | RC2 — Digital I/O / PWM output |
| پین 13 | VBUS — USB VBUS sensing input |
| پین 14 | VUSB — USB 3.3V regulator output (decoupling cap) |
| پین 15 | D+ — USB D+ data line |
| پین 16 | D- — USB D- data line |
| پین 17 | RC6 — Digital I/O / UART TX |
| پین 18 | RC7 — Digital I/O / UART RX |
| پین 19 | RB0 — Digital I/O / External interrupt |
| پین 20 | RB1 — Digital I/O |
| پین 21 | RB2 — Digital I/O |
| پین 22 | RB3 — Digital I/O |
| پین 23 | RB4 — Digital I/O / interrupt-on-change |
| پین 24 | RB5 — Digital I/O / interrupt-on-change |
| پین 25 | RB6 — Digital I/O / interrupt-on-change / ICSP |
| پین 26 | RB7 — Digital I/O / interrupt-on-change / ICSP |
| پین 27 | VDD — Positive supply (2.0-3.6 V) |
| پین 28 | MCLR/RE3 — Reset input / Digital I/O |
کاربردهای معمول
PIC18LF27J53-I/SP مناسب است برای 6 کاربردs: USB HID Peripheral Device, USB CDC Virtual COM Port, Battery-Powered Sensor Node, Capacitive Touch User Interface, Industrial Data Logger with USB, USB Charger / Power Bank Controller.
USB HID Peripheral Device
The PIC18LF27J53-I/SP is purpose-built for USB HID peripherals such as custom keyboards, mice, game controllers, and human-interface devices. Its integrated USB 2.0 full-speed SIE eliminates external PHY components, reducing BOM cost by $0.50-1.00. The 48 MHz CPU (12 MIPS) handles HID report processing at the USB 1 ms polling interval with margin. The 128 KB Flash hosts Microchip's USB stack plus HID class driver; 4 KB RAM is sufficient for 8-byte HID reports plus descriptor buffers. With 2.0-3.6 V supply and nanoWatt XLP, the part operates directly from a 3.3 V LDO for low-power USB peripherals.
پیشنهادی
USB CDC Virtual COM Port
The PIC18LF27J53-I/SP enables USB-to-UART replacement by emulating a virtual COM port over USB CDC, eliminating FTDI-style bridge chips. The 48 MHz CPU runs the CDC class driver while supporting up to 12 Mbps USB bandwidth, useful for debug consoles, firmware update channels, and industrial data acquisition. The on-chip 3.3 V regulator provides clean digital rail from USB VBUS. The 128 KB Flash accommodates the CDC stack plus application firmware, and the 4 KB RAM sustains CDC line-coding and endpoint buffers without dropping frames.
پیشنهادی
Battery-Powered Sensor Node
The PIC18LF27J53-I/SP fits low-power sensor nodes that require periodic USB charging or data dump. The nanoWatt XLP technology delivers deep-sleep currents below 1 uA with RAM retention, extending 2x AA battery life to multiple years in duty-cycled applications. The 2.0-3.6 V supply operates directly from alkaline or Li-ion chemistries. The 10-bit ADC with 13 channels supports multi-zone sensor reading, while the integrated USB enables battery charging and data offload without extra ICs. The 25 mA source/sink I/O directly drives relays or LEDs in industrial nodes.
پیشنهادی
Capacitive Touch User Interface
The PIC18LF27J53-I/SP's integrated Charge Time Measurement Unit (CTMU) and nanoWatt XLP make it an excellent fit for capacitive touch buttons, sliders, and proximity sensors. The CTMU enables touch measurement with simple RC network plus MCU capture, no dedicated touch IC required. The 13-channel ADC can scan 13 touch electrodes sequentially. The 48 MHz CPU handles touch decoding algorithms with sub-10 ms response time. The 128 KB Flash fits touch libraries plus HMI state machine, and the 28-SPDIP package suits through-hole hobby and prototype designs.
پیشنهادی
Industrial Data Logger with USB
The PIC18LF27J53-I/SP supports industrial data-logging applications that record sensor data to internal Flash or external EEPROM and dump logs via USB. The 128 KB Flash stores roughly 64 KB of firmware plus 32-64 KB for data logs depending on usage. The 10-bit ADC with 13 channels samples multi-sensor arrays; the integrated USB enables field engineers to extract logs via USB MSD or vendor class without a serial cable. The 2.0-3.6 V supply supports industrial 24V-bus-derived 3.3 V rails via buck regulators.
پیشنهادی
USB Charger / Power Bank Controller
The PIC18LF27J53-I/SP operates as a USB-aware charger or power-bank controller, leveraging its on-chip 3.3 V regulator and USB SIE. The MCU negotiates USB BC1.2 charging modes by toggling D+/D- lines through software, controlling charge current for Li-ion cells. The 13-channel ADC monitors cell voltage, current, and temperature with hardware comparators triggering over-current shutdown. The 128 KB Flash fits state-machine plus USB stack; the 4 KB RAM handles BC1.2 state plus a small display buffer.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC18LF27J53-I/SP — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC18LF27J53-I/SO | PIC18LF26J53-I/SP | PIC18LF27J13-I/SP | PIC18LF26J53-I/ML | PIC18LF46J53-I/SP | PIC18LF26J13-I/SP |
|---|---|---|---|---|---|---|---|
| Package | SPDIP-28 | SOIC-28 | SPDIP-28 - same | SPDIP-28 - same | QFN-28 | SPDIP-28 - same | SPDIP-28 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 128 KB | 128 KB | 64 KB | 128 KB | 64 KB | 64 KB | 64 KB |
| RAM | 4 KB | 4 KB | 4 KB | 1 KB | 4 KB | 8 KB | 4 KB |
| CPU Speed | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) |
| USB | USB 2.0 FS Device, integrated SIE | USB 2.0 FS Device, integrated SIE | USB 2.0 FS Device, integrated SIE | USB 2.0 FS Device, integrated SIE | USB 2.0 FS Device, integrated SIE | USB 2.0 FS Device, integrated SIE | USB 2.0 FS Device, integrated SIE |
| 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 | 2.0 V to 3.6 V |
| I/O Pins | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
تفاوت‌های کلیدی
- USB 2.0 integrated SIE eliminates external PHY (در مقابلPIC18F27J53 (same die, different voltage mode))
- nanoWatt XLP deep-sleep below 1 uA (در مقابلPIC18LF26J53 (lower-memory sibling))
- 48 MHz CPU at 2.0 V with 12 MIPS throughput (در مقابلPIC18LF25K50 (K-series, 48 MHz, smaller RAM))
یادداشت‌های طراحی
The PIC18LF27J53-I/SP operates at 2.0-3.6 V on the 'LF' core. Decouple VDD (pin 27) with a 100 nF ceramic capacitor as close to the pin as possible, plus a 4.7 uF bulk capacitor on the same rail. The on-chip 3.3 V regulator output (VUSB, pin 14) requires a 220 nF external capacitor. If USB is not used, leave VUSB decoupled to keep the regulator stable and minimize quiescent noise on the digital rail.
A common pitfall is treating 'LF' and 'F' variants as interchangeable: PIC18LF27J53 runs only at 2.0-3.6 V while PIC18F27J53 supports both 3.3 V (LF mode via REG) and 5 V (F mode). Using an 'LF' part on a 5 V rail will damage the device. Also verify the CONFIG3L fuse setting: CONFIG3L.REG<1:0> = 11 enables 5 V operation on PIC18F27J53 only. Do not exceed 5.5 V on any pin of the LF variant.
The 28-SPDIP package uses 0.100" (2.54 mm) pin pitch and is through-hole only. For surface-mount designs, use the same-die SOIC-28 (I/SO) or QFN-28 (I/ML) variants on identical pinout logic. For USB designs, route D+ (pin 15) and D- (pin 16) as a 90-ohm differential pair with matching trace lengths and an explicit ground reference plane - non-matched traces cause signal-integrity failures at USB enumeration.
اطلاعات انطباق
RoHS/REACH compliant per Microchip product page. Not AEC-Q100 qualified - industrial grade only. Halogen-free per Microchip product documentation.
