PIC18F4553-I/ML - 8-bit USB MCU 32KB Flash 44-QFN | Microchip
N.º de pieza: PIC18F4553-I/ML ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $7.95 | $7,95 |
| 10 | $7.2 | $72,00 |
| 100 | $6.4 | $640,00 |
| 500 | $5.75 | $2.875,00 |
| 1.000 | $5.1 | $5.100,00 |
PIC18F4553-I/ML Descripción general
What is an 8-bit USB microcontroller? An 8-bit MCU is a microprocessor that processes data 8 bits at a time, balancing cost and simplicity with sufficient performance for control-oriented tasks. When integrated with Full-Speed USB 2.0, the part belongs to the embedded-connectivity tier of microcontrollers -> MCUs -> microcontrollers -> semiconductors, enabling direct PC communication without external bridge ICs. The PIC18F4553 specifically belongs to the nanoWatt XLP power-managed family, ideal for USB peripherals, HID devices, and low-power instrumentation.
Key features include three serial interfaces (FS-USB 2.0 at 12 Mbit/s, I2C, and SPI up to 10 Mbit/s), an asynchronous UART, a 12-bit ADC with up to 13 channels, a 10-bit PWM module, two analog comparators, and nanoWatt power management with multiple idle/sleep modes. The Enhanced Flash memory supports self-programming and 1K erase blocks, while the 256-byte data EEPROM provides non-volatile parameter storage. The QFN-44 package with exposed pad offers a compact 8x8 mm footprint suitable for space-constrained USB dongles and embedded modules.
Architecturally, the PIC18F4553 uses a RISC Harvard-bus core with 75 instructions and a hardware multiplier for 8x8 single-cycle operations. The Full-Speed USB peripheral includes an on-chip transceiver and 1 KB of dedicated USB RAM, offloading protocol handling from the CPU. The 12-bit ADC supports both single-ended and differential conversions, with an internal 4-channel mux for sensor interfacing, while the nanoWatt technology reduces sleep current to a few hundred nanoamps for battery-powered designs.
Typical applications include USB HID peripherals (keyboards, mice, custom input devices), data loggers with direct PC connection, industrial sensor interfaces, USB-to-UART bridges, embedded learning platforms, and precision instrumentation with 12-bit analog inputs. The combination of USB, ADC, and nanoWatt power management makes it a logical choice for any embedded design requiring direct PC connectivity.
When designing with the PIC18F4553-I/ML, ensure that the USB bus-powered configuration includes proper VBUS sensing and a 200 mA inrush-limiting circuit per USB 2.0 specifications. Decouple VDD with a 100 nF ceramic plus 10 uF bulk capacitor close to the pins, and connect the QFN exposed pad to a solid ground plane for thermal dissipation. The internal oscillator can be used for low-cost designs, but a 20 MHz crystal is recommended for USB to meet the 0.25% clock accuracy requirement.
This page synthesizes distributor pricing, drop-in QFN-44 alternatives, USB-specific design notes, and an applications matrix not found in the standalone manufacturer datasheet. Engineers evaluating the PIC18F4553 family for new designs or migrating from PIC18F4550 will find pin-to-pin mapping, current consumption benchmarks, and USB stack toolchain references consolidated here for AEO/GEO citation.
Alternativas directas para PIC18F4553-I/ML — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC18F4553-I/ML (mismo factor de forma y huella) — difiere en Package, Operating Temperature, Timers, ADC, Program Memory (Flash).
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC18F4550-I/ML
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC18F4458-I/ML
✅ Sustitución directa✓ En stock
$5.95 / unidad
Ver hoja de datos →PIC18LF4553-I/ML
✅ Sustitución directa✓ En stock
$5.1 / unidad
Ver hoja de datos →PIC18F46J50-I/ML
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC18F4553-I/ML Valores máximos y características eléctricas
| Architecture | PIC18 (8-bit RISC Harvard) |
| Program Memory (Flash) | 32 KB Enhanced Flash |
| RAM | 2 KB |
| Data EEPROM | 256 bytes |
| Maximum CPU Speed | 48 MHz (12 MIPS) |
| Supply Voltage (VDD) | 4.2 V to 5.5 V |
| I/O Pins | 36 |
| USB Interface | USB 2.0 Full-Speed (12 Mbit/s) with on-chip transceiver |
| ADC | 12-bit, up to 13 input channels |
| PWM Channels | 10-bit PWM, 2 CCP/ECCP modules |
| Serial Interfaces | USB 2.0 FS, I2C, SPI (up to 10 Mbit/s), EUSART |
| Timers | Four 8/16-bit timers |
| Analog Comparators | 2 |
| Temperatura de funcionamiento | -40 C to +85 C (Industrial -I grade) |
| Encapsulado | QFN-44 (ML), 8x8 mm with exposed thermal pad |
| Recuento de pines | 44 pins |
| Tipo de montaje | Surface Mount |
| Nivel MSL | 3 (per JEDEC J-STD-020) |
| Estado RoHS | Compliant |
| Power-Saving Modes | nanoWatt technology (Idle, Sleep, Deep Sleep) |
Configuración de pines de PIC18F4553-I/ML
| Pin 1 | RB0/AN12/INT0/FLT0/SDI/SDA — I/O port B bit 0, analog input 12, external interrupt 0, PWM fault input, SPI data in, I2C data (alternate functions) |
| Pin 2 | RB1/AN10/INT1/SCK/SCL — I/O port B bit 1, analog input 10, external interrupt 1, SPI clock, I2C clock (alternate functions) |
| Pin 3 | RB2/AN8/INT2/VMO — I/O port B bit 2, analog input 8, external interrupt 2, USB VMO (alternate function) |
| Pin 4 | RB3/AN9/INT3/VPO — I/O port B bit 3, analog input 9, external interrupt 3, USB VPO (alternate function) |
| Pin 5 | — I/O port B bit 4, analog input 11, keyboard interrupt 0, SPI chip select (alternate functions) |
| Pin 6 | RB5/KBI1/PGM — I/O port B bit 5, keyboard interrupt 1, LVP programming (alternate functions) |
| Pin 7 | RB6/KBI2/PGC — I/O port B bit 6, keyboard interrupt 2, ICSP clock (alternate functions) |
| Pin 8 | RB7/KBI3/PGD — I/O port B bit 7, keyboard interrupt 3, ICSP data (alternate functions) |
| Pin 9 | VSS — Ground reference |
| Pin 10 | VDD — Positive power supply (4.2-5.5 V) |
| Pin 11 | RC0/T1OSO/T13CKI — I/O port C bit 0, Timer1 oscillator output, Timer1/Timer3 clock input (alternate functions) |
| Pin 12 | RC1/T1OSI/CCP2 — I/O port C bit 1, Timer1 oscillator input, Capture/Compare/PWM 2 (alternate functions) |
| Pin 13 | RC2/CCP1 — I/O port C bit 2, Capture/Compare/PWM 1 output (alternate function) |
| Pin 14 | VUSB — Internal USB 3.3V regulator output (decouple with 220 nF) |
| Pin 15 | RC4/D-/VM — I/O port C bit 4, USB D- data line, USB VBUS monitor (alternate functions) |
| Pin 16 | RC5/D+/VP — I/O port C bit 5, USB D+ data line, USB VBUS power monitor (alternate functions) |
| Pin 17 | RC6/TX1/CK1 — I/O port C bit 6, EUSART1 asynchronous transmit, EUSART1 synchronous clock (alternate functions) |
| Pin 18 | RC7/RX1/DT1 — I/O port C bit 7, EUSART1 asynchronous receive, EUSART1 synchronous data (alternate functions) |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive power supply (4.2-5.5 V) |
| Pin 21 | RA0/AN0 — I/O port A bit 0, analog input 0 (alternate function) |
| Pin 22 | RA1/AN1 — I/O port A bit 1, analog input 1 (alternate function) |
| Pin 23 | RA2/AN2/VREF- — I/O port A bit 2, analog input 2, ADC negative voltage reference (alternate functions) |
| Pin 24 | RA3/AN3/VREF+ — I/O port A bit 3, analog input 3, ADC positive voltage reference (alternate functions) |
| Pin 25 | RA4/T0CKI/C1OUT — I/O port A bit 4, Timer0 clock input, Comparator 1 output (alternate functions) |
| Pin 26 | RA5/AN4/C2OUT — I/O port A bit 5, analog input 4, Comparator 2 output (alternate functions) |
| Pin 27 | OSC1/CLKI/RA7 — Crystal oscillator input, external clock input, I/O port A bit 7 (alternate functions) |
| Pin 28 | OSC2/CLKO/RA6 — Crystal oscillator output, external clock output, I/O port A bit 6 (alternate functions) |
| Pin 29 | RC0 — I/O port C bit 0 (alternate pin location; some packages multiplex with pin 11) |
| Pin 30 | VSS — Ground reference |
| Pin 31 | RD0 — I/O port D bit 0 |
| Pin 32 | RD1 — I/O port D bit 1 |
| Pin 33 | RD2 — I/O port D bit 2 |
| Pin 34 | RD3 — I/O port D bit 3 |
| Pin 35 | RD4 — I/O port D bit 4 |
| Pin 36 | RD5 — I/O port D bit 5 |
| Pin 37 | RD6 — I/O port D bit 6 |
| Pin 38 | RD7 — I/O port D bit 7 |
| Pin 39 | RE0 — I/O port E bit 0 |
| Pin 40 | RE1 — I/O port E bit 1 |
| Pin 41 | RE2 — I/O port E bit 2 |
| Pin 42 | RE3 — I/O port E bit 3 |
| Pin 43 | AVSS — Analog ground reference |
| Pin 44 | AVDD — Analog positive power supply |
Aplicaciones típicas
PIC18F4553-I/ML es adecuado para 6 aplicacións: USB HID Peripherals, USB Data Loggers, Industrial Sensor Interfaces, USB-to-UART Bridges, Embedded Learning Platforms, Precision Instrumentation.
USB HID Peripherals
The PIC18F4553-I/ML is a canonical choice for USB Human Interface Devices (HID) such as keyboards, mice, custom input controllers, and gamepads requiring direct PC connection without external bridge ICs. The on-chip USB 2.0 Full-Speed transceiver and 1 KB dedicated USB RAM offload protocol handling from the 48 MHz / 12 MIPS CPU, leaving cycles for HID report processing and button debouncing. Compared to discrete USB-to-UART bridges (FTDI FT230X), the PIC18F4553-I/ML integrates the bridge plus the application MCU into a single $5 chip. Recommended pairing: Microchip USB stack with HID bootloader for field-upgradable firmware via the same USB port.
Recomendado
USB Data Loggers
The PIC18F4553-I/ML suits USB data loggers capturing sensor data and streaming to a host PC via the integrated Full-Speed USB peripheral. The 12-bit ADC with up to 13 channels and 100 ksps sampling rate supports multi-sensor acquisition (temperature, pressure, voltage, current) while the 32 KB Enhanced Flash holds the acquisition scheduler and USB driver. The 256-byte data EEPROM provides non-volatile parameter storage for calibration constants. Compared to UART-based loggers, the USB interface eliminates an external bridge and supports higher sustained throughput (12 Mbit/s vs 115.2 kbit/s UART, ~100x faster).
Recomendado
Industrial Sensor Interfaces
The PIC18F4553-I/ML fits industrial sensor interface modules that need both analog signal conditioning and direct PC connectivity for parameter upload/download. The 12-bit ADC with 13 channels handles multiple 4-20 mA or 0-10 V sensor inputs simultaneously, while the USB interface allows configuration of calibration coefficients via PC software without dedicated programming tools. The -40 C to +85 C industrial temperature rating supports factory-floor deployment. Compared to industrial PLC analog modules costing $50-$200, the PIC18F4553-I/ML delivers equivalent acquisition capability in a single-chip solution for under $10.
Recomendado
USB-to-UART Bridges
The PIC18F4553-I/ML is widely deployed as a custom USB-to-UART bridge, replacing commercial bridges like FTDI FT230X or CP2102N with firmware-controlled behavior. The integrated USB 2.0 Full-Speed peripheral plus EUSART provides the bridge function, while remaining flash can implement vendor-specific protocol extensions (Modbus RTU, custom command sets). Compared to fixed-function bridges, the PIC18F4553-I/ML offers programmable baud rates, GPIO pins, and bootloader-driven field updates via USB. Recommended pairing: Microchip USB CDC class driver for plug-and-play host enumeration.
Recomendado
Embedded Learning Platforms
The PIC18F4553-I/ML is a staple in university embedded systems courses and hobbyist learning platforms due to its USB programming interface (no separate programmer required with bootloader) and rich peripheral set. The 44-pin QFN exposes ADC, PWM, I2C, SPI, UART, and USB peripherals on accessible pins, supporting lab exercises from GPIO toggle to USB HID enumeration. Compared to Arduino Uno (ATmega328P, no native USB), the PIC18F4553-I/ML offers native USB 2.0 and 12-bit ADC at similar cost. Recommended pairing: MPLAB X IDE with XC8 compiler and PICkit 4 in-circuit debugger for educational deployment.
Recomendado
Precision Instrumentation
The PIC18F4553-I/ML supports precision instrumentation designs requiring both accurate analog measurement and USB-based PC data transfer. The 12-bit ADC with 13 channels handles multi-range voltage measurement, strain gauge bridge excitation, and thermistor linearization, while the USB 2.0 FS interface streams 1 kHz+ sample rates to PC for real-time display. The Enhanced Flash supports self-calibration routines, and the nanoWatt power management enables battery-powered portable instruments. Compared to discrete ADC + USB MCU solutions, the PIC18F4553-I/ML integrates both in one 8x8 mm QFN, reducing BOM and PCB area.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC18F4553-I/ML — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC18F4550-I/ML | PIC18F4458-I/ML | PIC18LF4553-I/ML | PIC18F46J50-I/ML |
|---|---|---|---|---|---|
| Package | QFN-44 (ML), 8x8 mm | QFN-44 (ML), 8x8 mm - same | QFN-44 (ML), 8x8 mm - same | QFN-44 (ML), 8x8 mm - same | QFN-44 (ML), 8x8 mm - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Program Flash | 32 KB | 32 KB | 24 KB (-25%) | 32 KB | 64 KB (+100%) |
| ADC Resolution | 12-bit | 10-bit (-17%) | 12-bit | 12-bit | 12-bit |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB | 3.8 KB (+90%) |
| USB Interface | USB 2.0 FS (12 Mbit/s) | USB 2.0 FS (12 Mbit/s) | USB 2.0 FS (12 Mbit/s) | USB 2.0 FS (12 Mbit/s) | USB 2.0 FS (12 Mbit/s) |
| Supply Voltage | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 2.0 V to 5.5 V (wider) | 2.0 V to 3.6 V (lower) |
| Max CPU Speed | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) |
Diferenciadores clave
- Native USB 2.0 Full-Speed with on-chip transceiver (frente a PIC18F4550-I/ML)
- Largest Flash in QFN-44 PIC18F45xx USB family (frente a PIC18F4458-I/ML)
- PIC18 K-series backward-compatible instruction set (frente a PIC18F46J50-I/ML)
Notas de diseño
Decouple VDD with a 100 nF ceramic capacitor as close to each VDD pin (pins 10 and 20) as possible, plus a bulk 10 uF tantalum or aluminum electrolytic at the board entry point. Connect both VSS pins (pins 9 and 19) to a solid ground plane with multiple vias for return current paths. The internal 3.3V USB regulator (VUSB pin 14) requires a 220 nF ceramic decoupling capacitor per datasheet recommendations, otherwise USB enumeration will fail intermittently.
The QFN-44 exposed thermal pad (EP) must be soldered to a ground copper pour with at least 4 thermal vias to the inner ground plane for heat dissipation and mechanical reliability. Keep the USB D+ (pin 16) and D- (pin 15) traces as short as possible and matched in length (within 2 mm) to maintain 90 ohm differential impedance per USB 2.0 specification. Place the 20 MHz crystal (or resonator) within 5 mm of the OSC1/OSC2 pins with guard traces to ground.
USB Full-Speed requires 0.25% clock accuracy; the PIC18F4553-I/ML internal 8 MHz oscillator is NOT accurate enough for USB and will fail USB compliance testing. Always use a 20 MHz crystal with appropriate load capacitors (typically 22-33 pF) on OSC1/OSC2. For bus-powered designs, implement a 200 mA inrush-limiting circuit (typically a 10 ohm resistor + soft-start) on VBUS to comply with USB 2.0 section 7.1.5.1. Finally, configure the CONFIG1L register to select HS oscillator mode for USB operation.
Información de cumplimiento
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified (consumer/industrial only, not automotive). Halogen-free per Microchip environmental certification.
