PIC18F4553T-I/PT - 8-Bit 48MHz USB MCU, 32KB Flash | Microchip
MPN: PIC18F4553T-I/PT ✓ نشطPIC18F4553T-I/PT نظرة عامة
A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and configurable peripherals. The PIC18 family is Microchip's enhanced 8-bit Harvard-architecture line, positioned in the broader taxonomy as: PIC18F -> 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. Within that hierarchy, the PIC18F4553 specifically targets USB-connected embedded designs that also need accurate analog measurements.
Key features include nanoWatt power management with multiple idle and sleep modes, a 12-bit ADC with up to 13 input channels, a 10-bit PWM module, two analog comparators, a programmable 31 kHz to 8 MHz internal oscillator, and a hardware USB transceiver compliant with USB 2.0 Full-Speed (12 Mbit/s). The 44-pin TQFP package exposes 35 digital I/O lines plus the USB D+/D- pins, and the 'T' suffix indicates Tape & Reel packaging.
Typical applications include USB HID peripherals (custom input devices, sensor bridges to PC), industrial data loggers with precision analog front-end, USB-to-UART/I2C/SPI bridges, low-power connected sensor nodes using nanoWatt modes, and educational/prototyping boards where PIC18 + USB simplifies firmware development.
When designing with this part, reserve at least one I/O pin for the MCLR reset (or use the internal MCLR disable configuration), add proper USB bus termination (per USB 2.0 spec), and provide adequate decoupling. Use MPLAB X IDE with the XC8 compiler for firmware development; an integrated USB stack is available in the Microchip Libraries for Applications (MLA).
بدائل مباشرة لـ PIC18F4553T-I/PT — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC18F4553T-I/PT (نفس عامل الشكل والبصمة) — يختلف في ADC, Timers, Operating Temperature, Package, Program Memory (Flash).
PIC18F4550-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F45K50-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F4553-I/PT
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC18F4553T-I/ML
تواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F4455-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F4480-I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC18F14K50-I/P
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC18F4553T-I/PT الحدود القصوى والخصائص الكهربائية
| Core | PIC18 8-bit RISC |
| Instruction Set | PIC18 (C-optimized, 16-bit instructions) |
| Maximum CPU Frequency | 48 MHz (12 MIPS) |
| Program Memory (Flash) | 32 KB (16K x 16 words) |
| Data RAM | 2 KB |
| Data EEPROM | 256 bytes |
| USB Peripheral | USB 2.0 Full-Speed (12 Mbit/s), device/host (limited) |
| ADC | 10/12-bit, up to 13 input channels |
| Digital I/O Pins | 35 (max) |
| Timers | 4 (Timer0/1/2/3) |
| Capture/Compare/PWM | 1 CCP + 1 ECCP (10-bit PWM) |
| Serial Interfaces | USB, I2C, SPI, USART (EUSART) |
| Operating Voltage | 4.2 V to 5.5 V (USB enabled); 2.0 V to 5.5 V (no USB) |
| درجة حرارة التشغيل | -40C to +85C (Industrial) |
| العلبة | 44-pin TQFP (PT), 10x10 mm |
| نوع التركيب | Surface Mount |
| Programming/Debug | ICSP (In-Circuit Serial Programming) via PGC/PGD |
| Power-Saving Modes | nanoWatt (Idle, Sleep, Deep Sleep, RC_RUN) |
تكوين أطراف PIC18F4553T-I/PT
| دبوس 1 | MCLR/RE3 — Master Clear (reset) input or digital input RE3 |
| دبوس 2 | RA0/AN0 — PORTA bit 0 / ADC input channel 0 |
| دبوس 3 | RA1/AN1 — PORTA bit 1 / ADC input channel 1 |
| دبوس 4 | RA2/AN2/VREF- — PORTA bit 2 / ADC input channel 2 / ADC negative reference |
| دبوس 5 | RA3/AN3/VREF+ — PORTA bit 3 / ADC input channel 3 / ADC positive reference |
| دبوس 6 | RA4/T0CKI/RCV — PORTA bit 4 / Timer0 clock input / PWM ECCP Fault input |
| دبوس 7 | RA5/AN4/SS1 — PORTA bit 5 / ADC input channel 4 / SPI1 slave select |
| دبوس 8 | RE0/RD — PORTE bit 0 / Parallel Port read control |
| دبوس 9 | RE1/WR — PORTE bit 1 / Parallel Port write control |
| دبوس 10 | RE2/CS — PORTE bit 2 / Parallel Port chip select |
| دبوس 11 | VDD — Digital supply voltage (2.0-5.5V; 4.2-5.5V with USB) |
| دبوس 12 | VSS — Digital ground |
| دبوس 13 | OSC1/CLKI — Crystal oscillator input / external clock input |
| دبوس 14 | OSC2/CLKO/RA6 — Crystal oscillator output / clock output / PORTA bit 6 |
| دبوس 15 | D-/RC4 — USB D- data line / PORTC bit 4 |
| دبوس 16 | D+/RC5 — USB D+ data line / PORTC bit 5 |
| دبوس 17 | RC6/TX1/CK1 — EUSART1 transmit / clock / PORTC bit 6 |
| دبوس 18 | RC7/RX1/DT1 — EUSART1 receive / data / PORTC bit 7 |
| دبوس 19 | RD0/PSP0 — PORTD bit 0 / Parallel Slave Port data 0 |
| دبوس 20 | RD1/PSP1 — PORTD bit 1 / Parallel Slave Port data 1 |
| دبوس 21 | RD2/PSP2 — PORTD bit 2 / Parallel Slave Port data 2 |
| دبوس 22 | RD3/PSP3 — PORTD bit 3 / Parallel Slave Port data 3 |
| دبوس 23 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / clock in |
| دبوس 24 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 I/O |
| دبوس 25 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM output |
| دبوس 26 | RC3/SCK1/SCL1 — PORTC bit 3 / SPI1 clock / I2C1 clock |
| دبوس 27 | RB0/AN12/INT0 — PORTB bit 0 / ADC channel 12 / External interrupt 0 |
| دبوس 28 | RB1/AN10/INT1 — PORTB bit 1 / ADC channel 10 / External interrupt 1 |
| دبوس 29 | RB2/AN8/INT2 — PORTB bit 2 / ADC channel 8 / External interrupt 2 |
| دبوس 30 | RB3/AN9/CCP2 — PORTB bit 3 / ADC channel 9 / CCP2 output |
| دبوس 31 | AVSS — Analog ground |
| دبوس 32 | AVDD — Analog supply voltage (must equal VDD) |
| دبوس 33 | RB4/AN11 — PORTB bit 4 / ADC channel 11 |
| دبوس 34 | RB5/AN13 — PORTB bit 5 / ADC channel 13 |
| دبوس 35 | RB6/ICSPCLK — PORTB bit 6 / In-Circuit Serial Programming clock |
| دبوس 36 | RB7/ICSPDAT — PORTB bit 7 / In-Circuit Serial Programming data |
| دبوس 37 | RD4/PSP4 — PORTD bit 4 / Parallel Slave Port data 4 |
| دبوس 38 | RD5/PSP5 — PORTD bit 5 / Parallel Slave Port data 5 |
| دبوس 39 | RD6/PSP6 — PORTD bit 6 / Parallel Slave Port data 6 |
| دبوس 40 | RD7/PSP7 — PORTD bit 7 / Parallel Slave Port data 7 |
| دبوس 41 | VUSB — USB internal transceiver supply (3.3V regulated; needs decoupling) |
| دبوس 42 | VSS — Digital ground |
| دبوس 43 | VDD — Digital supply voltage (2.0-5.5V; 4.2-5.5V with USB) |
| دبوس 44 | NC — Not connected (no internal bond; leave open or route as needed) |
التطبيقات النموذجية
PIC18F4553T-I/PT مناسب لـ 6 التطبيقs: USB HID Peripherals (Custom Input Devices), Industrial Data Loggers with Precision Analog, USB-to-Serial Protocol Bridges (UART/I2C/SPI), Low-Power Connected Sensor Nodes, Educational Development Boards and Prototypes, USB Audio Class 1 Device Headsets and Headphones.
USB HID Peripherals (Custom Input Devices)
The PIC18F4553T-I/PT excels in USB Human Interface Device (HID) applications thanks to its integrated USB 2.0 Full-Speed transceiver operating at 12 Mbit/s and a 48MHz core delivering 12 MIPS. Place the device between a button/sensor matrix and the USB bus; the on-chip USB engine handles framing, leaving firmware free to scan inputs. The 32KB Flash easily accommodates HID report descriptors plus custom application logic. The 12-bit ADC with up to 13 input channels adds analog potentiometer or joystick support without an external ADC. Operating at 4.2-5.5V from a USB-powered regulator simplifies bus-powered designs.
موصى به
Industrial Data Loggers with Precision Analog
The PIC18F4553T-I/PT is well suited to industrial data loggers because its 12-bit ADC and nanoWatt modes let the device sleep between samples, capturing sensor data and uploading it over USB for analysis. Use the 32KB Flash to buffer entries and the 256-byte EEPROM for configuration retention. Sample 4-20mA or 0-10V sensor signals with external dividers and run the readings through the on-chip ADC. The 48MHz core and 2KB of RAM support modest preprocessing and compression before USB transmission, while the industrial -40C to +85C operating range handles factory environments.
موصى به
USB-to-Serial Protocol Bridges (UART/I2C/SPI)
The PIC18F4553T-I/PT is a common choice for USB to UART, I2C, or SPI bridges used to bring legacy peripherals onto a PC. Its USB Full-Speed endpoint engine plus EUSART and MSSP (I2C/SPI) peripherals on the same die mean one chip replaces a separate USB bridge IC and host MCU. 32KB Flash holds CDC USB stack plus custom protocol glue; the 12-bit ADC is a free bonus when the downstream device exposes analog signals. Use 4.2-5.5V from the USB bus and the internal phase-locked-loop oscillator to drop the BOM to two ceramic caps.
موصى به
Low-Power Connected Sensor Nodes
The PIC18F4553T-I/PT serves low-power sensor nodes that need USB on-demand attachment for service or data offload, leveraging its nanoWatt technology: Idle, Sleep, Deep Sleep, and RC_RUN modes trim current draw between sensor reads. The 32KB Flash fits an RTOS-lite scheduler or a state machine, while 2KB RAM holds sample buffers. Wake on interrupt, gather data, then drop back into deep sleep; the USB peripheral stays quiescent until the user plugs in a service cable. Industrial -40 to +85C temperature supports outdoor and factory deployments.
موصى به
Educational Development Boards and Prototypes
The PIC18F4553T-I/PT is widely used in teaching labs because its TQFP-44 footprint, breadboard-friendly adaptor boards, USB HID class, and MPLAB X IDE/XC8 support make the entire toolchain accessible to students. 32KB Flash supports serial bootloaders and example USB stacks from the Microchip Libraries for Applications. The 12-bit ADC accommodates analog sensor labs, while PWM, I2C, and SPI peripherals cover motor and bus experiments on one chip. The 'I' industrial temperature grade tolerates student-bench abuse and 5V supply noise.
موصى به
USB Audio Class 1 Device Headsets and Headphones
The PIC18F4553T-I/PT can drive USB Audio Class 1 (1.0/Mbit Full-Speed) headsets using its integrated USB peripheral, EUSART, and a PWM-driven Class-D amplifier path or external CODEC hand-off. The 12-bit ADC enables microphone input for headsets, while 2KB RAM supports small sample buffers; larger buffers are typically held in an external SPI RAM. The 4.2-5.5V supply comes from the USB VBUS line, eliminating batteries. Industrial -40 to +85C supports ruggedized USB headsets. Use external CODECs (e.g., 16-bit DAC) when higher fidelity is required.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC18F4553T-I/PT — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC18F4550-I/PT | PIC18F45K50-I/PT | PIC18F4455-I/PT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (PT), 10x10 mm | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same |
| Flash Program Memory | 32 KB | 32 KB | 32 KB | 24 KB |
| RAM | 2 KB | 2 KB | 2 KB | 2 KB |
| ADC Resolution | 12-bit (up to 13 channels) | 10-bit (up to 13 channels) | 10/12-bit (up to 14 channels) | 10-bit |
| USB Peripheral | 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) |
| Maximum CPU Frequency | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) | 48 MHz (12 MIPS) |
| nanoWatt Power-Saving | Yes (Idle/Sleep/Deep Sleep/RC_RUN) | Yes (Idle/Sleep/RC_RUN) | Yes + XLP ultra-low-power | Yes (Idle/Sleep) |
| Operating Voltage (USB) | 4.2 V to 5.5 V | 4.2 V to 5.5 V | 2.0 V to 5.5 V | 4.2 V to 5.5 V |
| Unit Price (qty 1, as of 2026-09-27) | $6.85 | ~$6.40 | ~$7.10 | ~$6.20 |
أبرز الفروقات
- Higher-resolution 12-bit ADC over PIC18F4550 (مقابلPIC18F4550-I/PT)
- nanoWatt power-saving with USB integration (مقابلPIC18F45K50-I/PT)
- Higher memory headroom vs PIC18F4455 (مقابلPIC18F4455-I/PT)
ملاحظات التصميم
Use a stable 4.2-5.5V rail for USB operation. Add 100nF decoupling within 5mm of each VDD/VSS pin pair, plus a bulk 10uF tantalum or ceramic near the VUSB pin (pin 41) and a separate 470nF on VUSB to ensure USB transceiver supply is clean. According to the Microchip PIC18F4553 datasheet, VUSB has its own internal 3.3V regulator that requires external decoupling; bypassing is mandatory for USB Full-Speed compliance.
Route the 12 MHz crystal traces (OSC1/OSC2) short, symmetric, and guarded by GND to minimize jitter. Place the crystal, its load capacitors, and any series resistor within 7mm of pins 13/14. Keep D+/D- traces matched within 2mm and routed as 90 ohm differential (per USB 2.0 spec). Avoid routing high-speed digital lines parallel to the D+/D- pair, and provide a continuous ground reference below the USB section.
Estimated: at 48 MHz (HS oscillator), typical I_DD can reach 25-40 mA while USB active; ensure the VBUS regulator on the upstream USB connector can supply this plus USB inrush. Also confirm that the MCLR pin (1) is pulled high through 10 kohm (not left floating) so spurious resets are avoided, and disable the internal MCLR via configuration bits only after a reliable external reset strategy is in place. Source: PIC18F4553 datasheet electrical characteristics and configuration bits sections.
Program the CONFIG1L register to select the appropriate oscillator mode (HS for >4 MHz crystal, INTIO for internal 8 MHz with PLL). According to the Microchip PIC18F4553 datasheet, selecting HS-PLL enables 48 MHz operation with a 4 MHz external crystal. Enable the fail-safe clock monitor (FCMEN) and the internal/secondary oscillator (IESO) to gracefully recover from crystal faults; required for many USB stack implementations.
معلومات الامتثال
RoHS compliance per Microchip product page (PIC18F4553 family). This is an industrial-grade -40 to +85C part, not AEC-Q100 automotive grade. For automotive USB, use the PIC18F4553-I/PT extended-temperature variant or a Q100-qualified K-series replacement.