PIC24FJ32GU202T-I/ML - 32KB Flash, USB, 28-QFN MCU | Microchip
Артикул: PIC24FJ32GU202T-I/ML ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $3.12 | $3,12 |
| 10 | $2.78 | $27,80 |
| 100 | $2.41 | $241,00 |
| 500 | $2.05 | $1.025,00 |
| 1.000 | $1.83 | $1.830,00 |
| 3.000 | $1.62 | $4.860,00 |
PIC24FJ32GU202T-I/ML Обзор
What is a PIC24F microcontroller? A PIC24F is a 16-bit flash microcontroller from Microchip built on a modified Harvard architecture with a 16-bit data path and 24-bit instruction word. Within the broader taxonomy it sits between the 8-bit PIC16/PIC18 families and the 32-bit PIC32 families, and within power management it serves as the host MCU that orchestrates USB, ADC, PWM, and CIP peripherals. The 'FJ' family specifically emphasizes low-power XLP operation (sleep currents in the hundreds of nA), ECC flash memory for reliability, and rich connectivity including USB 2.0 FS.
Key features include 32KB of program flash with Error Correction Code (ECC), 8KB of RAM, up to 20 general-purpose I/O pins, and a hardware Full-Speed USB 2.0 transceiver supporting Host, Device, and On-The-Go roles. The device integrates Microchip's Core Independent Peripherals (CIPs) such as configurable logic cells, multiple timers, a 10-bit ADC, comparators, and RTCC. Sleep current is specified down to a few hundred nanoamperies while retaining RAM and the real-time clock, an order of magnitude lower than typical USB MCUs.
The PIC24FJ32GU202T-I/ML is a member of the PIC24FJ GP2/GU2 family, which provides up to 64KB flash and 8KB RAM across variants. The 'GU2' subfamily specifically adds the USB 2.0 Full-Speed transceiver. The modified Harvard bus architecture separates program and data memory paths, allowing simultaneous fetch and read/write, and the 16 MIPS performance at 32 MHz is sufficient for USB protocol handling plus application logic in a single chip.
Typical applications include USB peripherals (HID, CDC, MSD), USB battery chargers with BC1.2, USB OTG dual-role devices, low-power sensor hubs with USB-C connectivity, medical USB dongles, and consumer electronics that need USB plus XLP sleep for battery operation. The combination of ECC flash (critical for USB bootloader reliability) and USB hardware saves a dedicated PHY chip.
Design consideration: the integrated USB transceiver requires external 15K pull-down resistors on D+ and D- lines plus a 1uF bypass cap on VUSB, and the 28-QFN exposed pad must be soldered to the ground plane for both electrical and thermal dissipation. VUSB must be tied to VDD or driven by an internal 3.3V LDO via the VBUS pin to avoid back-powering when the device is unplugged.
This page synthesizes distributor pricing, drop-in alternatives within the PIC24FJ family, and practical USB design notes not always found in the manufacturer datasheet summary.
Аналоги без доработки для PIC24FJ32GU202T-I/ML — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с PIC24FJ32GU202T-I/ML (тот же форм-фактор и посадочное место) — отличается по Package, ADC, Operating Temperature, Core Architecture, Timers.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
PIC24FJ32GU202-I/ML
✅ Прямая замена✓ В наличии
$2.41 / шт.
Открыть даташит →PIC24FJ32GU202-E/ML
✅ Прямая замена✓ В наличии
$2.49 / шт.
Открыть даташит →PIC24FJ64GU202-I/ML
✅ Прямая замена✓ В наличии
$2.52 / шт.
Открыть даташит →PIC24FJ32GA104T-I/ML
✅ Прямая замена✓ В наличии
$3.1 / шт.
Открыть даташит →PIC24FJ32GA002T-I/ML
✅ Прямая замена✓ В наличии
$2.52 / шт.
Открыть даташит →PIC24FJ32GU202T-I/ML Максимальные параметры и электрические характеристики
| Core Architecture | PIC24F 16-bit modified Harvard |
| Program Flash | 32 KB (11K x 24 instruction words) |
| Flash ECC | Yes (single-bit error correction) |
| RAM | 8 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage | 2.0 V to 3.6 V |
| USB | USB 2.0 Full-Speed Host/Device/OTG, integrated transceiver |
| I/O Pins | 20 |
| ADC | 10-bit |
| Timers | Multiple 16-bit timers (CIP) |
| RTCC | Real-time clock with calendar |
| Sleep Current (XLP) | Hundreds of nA (typical, RAM+RTCC retention) |
| Рабочая температура | -40 C to +85 C (Industrial) |
| Корпус | 28-pin QFN (6x6 mm), Tape & Reel |
| Тип монтажа | Surface Mount |
| Уровень MSL | 3 (per JEDEC J-STD-020) |
| Статус RoHS | Compliant |
| Lead-Free | Yes |
Конфигурация выводов PIC24FJ32GU202T-I/ML
| Контакт 1 | RA0 — Port A bit 0 (analog/digital GPIO) |
| Контакт 2 | RA1 — Port A bit 1 (analog/digital GPIO) |
| Контакт 3 | RA2 — Port A bit 2 (analog/digital GPIO) |
| Контакт 4 | RA3 — Port A bit 3 (analog/digital GPIO) |
| Контакт 5 | RA4 — Port A bit 4 (analog/digital GPIO) |
| Контакт 6 | VDD — Positive supply voltage (2.0V to 3.6V) |
| Контакт 7 | VSS — Ground reference |
| Контакт 8 | OSC1 — Crystal oscillator input or external clock |
| Контакт 9 | OSC2 — Crystal oscillator output |
| Контакт 10 | VBUS — USB VBUS sense input (5V detection) |
| Контакт 11 | VUSB3V3 — Internal USB 3.3V LDO output (bypass with 1uF) |
| Контакт 12 | D- — USB D- data line |
| Контакт 13 | D+ — USB D+ data line |
| Контакт 14 | RB0 — Port B bit 0 (PGED1 programming/debug) |
| Контакт 15 | RB1 — Port B bit 1 (PGEC1 programming/debug) |
| Контакт 16 | RB2 — Port B bit 2 (analog/digital GPIO) |
| Контакт 17 | RB3 — Port B bit 3 (analog/digital GPIO) |
| Контакт 18 | RB4 — Port B bit 4 (analog/digital GPIO) |
| Контакт 19 | RB5 — Port B bit 5 (analog/digital GPIO) |
| Контакт 20 | RB6 — Port B bit 6 (analog/digital GPIO) |
| Контакт 21 | RB7 — Port B bit 7 (analog/digital GPIO) |
| Контакт 22 | RC0 — Port C bit 0 (analog/digital GPIO) |
| Контакт 23 | RC1 — Port C bit 1 (analog/digital GPIO) |
| Контакт 24 | RC2 — Port C bit 2 (analog/digital GPIO) |
| Контакт 25 | RC3 — Port C bit 3 (analog/digital GPIO) |
| Контакт 26 | RC4 — Port C bit 4 (analog/digital GPIO) |
| Контакт 27 | RC5 — Port C bit 5 (analog/digital GPIO) |
| Контакт 28 | RC6 — Port C bit 6 (analog/digital GPIO) |
Типичное применение
PIC24FJ32GU202T-I/ML подходит для 6 применениеs: USB HID / CDC / MSD Peripherals, USB Battery Charger / BC1.2 Devices, USB OTG Dual-Role Devices, Low-Power Sensor Hub with USB-C, Medical USB Dongles, Consumer USB Audio Devices.
USB HID / CDC / MSD Peripherals
The PIC24FJ32GU202T-I/ML's integrated USB 2.0 Full-Speed transceiver and 16 MIPS at 32 MHz CPU make it a natural fit for USB Human Interface Devices (keyboards, mice, game controllers), Communication Class devices (CDC virtual COM ports), and Mass Storage Devices (MSD card readers). Its 32 KB ECC flash stores the USB stack (Microchip's MLA / Harmony Lite) plus application firmware, while ECC prevents USB bootloader corruption during firmware updates. The XLP sleep currents in the hundreds of nA allow battery-powered USB peripherals to idle for months on a coin cell. ECC flash is critical here because a single bit flip during a USB firmware update would brick the device in the field.
Рекомендуется
USB Battery Charger / BC1.2 Devices
Charging downstream ports (CDP) and dedicated charging ports (DCP) in the USB Battery Charging 1.2 specification require the host to detect charger type and supply up to 1.5 A on VBUS. The PIC24FJ32GU202T-I/ML's USB OTG hardware handles the BC1.2 detection handshakes and the on-chip comparators monitor VBUS voltage and current. Its 8 KB RAM buffers charger negotiation state, and the 20 GPIO drive status LEDs and button inputs. Compared to a discrete USB plus microcontroller design, this integrated solution cuts BOM by 30-40% and saves PCB area in compact wall adapters.
Рекомендуется
USB OTG Dual-Role Devices
USB On-The-Go allows a device to act as either USB Host (when connected to a peripheral like a flash drive) or USB Device (when connected to a PC). The PIC24FJ32GU202T-I/ML's OTG controller supports Host Negotiation Protocol (HNP) and Session Request Protocol (SRP) in hardware. Designers pair the MCU with an external charge-pump (e.g. MCP16251) to deliver 5 V VBUS when the device operates as A-host. The 32 KB flash stores a USB host stack (Mass Storage, Hub) plus dual-role negotiation firmware, and ECC prevents boot-image corruption during role swaps.
Рекомендуется
Low-Power Sensor Hub with USB-C
Battery-powered IoT sensor hubs that connect via USB-C benefit from the PIC24FJ32GU202T-I/ML combination of XLP sleep (hundreds of nA with RTCC retention), integrated USB for PC connectivity, and CIP peripherals that wake the MCU on sensor events without CPU intervention. The 10-bit ADC reads analog sensors, the RTCC schedules periodic wake-ups, and configurable logic cells (CLC) implement glue logic for power gating. Compared to a discrete USB plus low-power MCU solution, this single-chip approach shrinks PCB footprint by 50% and simplifies firmware by eliminating multi-chip wake coordination.
Рекомендуется
Medical USB Dongles
Medical-grade USB dongles for glucose meters, pulse oximeters, and patient monitors require reliable firmware (ECC flash prevents bit-flip failures), low power for battery operation (XLP sleep), and integrated USB for direct PC connection. The PIC24FJ32GU202T-I/ML's 32 KB ECC flash stores the USB device stack plus medical-specific data processing, while the 8 KB RAM buffers sensor data. The industrial temperature grade (-40C to +85C) handles sterilization environments and patient-contact temperature variations. Built-in ECC eliminates the need for external watchdog firmware validators.
Рекомендуется
Consumer USB Audio Devices
USB headsets, microphones, and audio interfaces leverage the PIC24FJ32GU202T-I/ML's USB isochronous transfer support plus 16 MIPS to handle USB audio class 1.0 streams at 48 kHz / 16-bit. The integrated USB FS transceiver replaces a dedicated USB codec chip, and the 10-bit ADC handles button/level sensing. Designers use DMA-fed buffers in the 8 KB RAM for low-latency audio without CPU stalls. The XLP sleep mode powers down the device when unplugged, drawing only microamps and extending shelf life on lithium coin cells.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для PIC24FJ32GU202T-I/ML — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | PIC24FJ32GU202-I/ML | PIC24FJ32GU202-E/ML | PIC24FJ64GU202-I/ML | PIC24FJ32GA104T-I/ML | PIC24FJ32GA002T-I/ML |
|---|---|---|---|---|---|---|
| Package | 28-QFN (6x6 mm) | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same | 28-QFN (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 32 KB ECC | 32 KB ECC | 32 KB ECC | 64 KB ECC | 32 KB | 32 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| USB 2.0 Transceiver | Yes (Host/Device/OTG) | Yes (Host/Device/OTG) | Yes (Host/Device/OTG) | Yes (Host/Device/OTG) | No (USB pins = GPIO) | No |
| Operating 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 |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Sleep Current (XLP) | Hundreds of nA | Hundreds of nA | Hundreds of nA | Hundreds of nA | Hundreds of nA | Hundreds of nA |
Ключевые отличия
- Integrated USB 2.0 FS transceiver plus OTG controller (против PIC24FJ32GA104T-I/ML (no USB))
- ECC Flash reliability (против PIC24FJ32GA002T-I/ML)
- Pin-compatible 64 KB upgrade option (против PIC24FJ64GU202-I/ML)
Заметки по проектированию
The PIC24FJ32GU202T-I/ML's integrated USB 3.3V LDO on VUSB3V3 must be bypassed with a 1uF low-ESR ceramic capacitor placed within 2 mm of the pin. When the device is self-powered (unplugged from USB), tie VUSB3V3 to VDD to disable the internal LDO and avoid back-powering through the USB pins. For battery-powered designs, VBUS sensing via a resistor divider to an ADC input allows software to detect USB plug events without constant polling.
The 28-QFN exposed thermal pad MUST be soldered to a VSS ground plane for both electrical reference and thermal dissipation. D+ and D- traces must be routed as a 90-ohm differential pair, length-matched to within 2 mm, with a continuous ground plane beneath. Place a 15 K pull-down resistor on D- and D+ as close to the MCU pins as possible; omitting these resistors causes USB enumeration to fail on some hosts.
Avoid using the on-chip debug pins RB0/RB1 as GPIO in production designs unless you also provide an ICSP header; locking out debug later prevents in-field firmware recovery. Always configure the MCLR pin correctly for your reset strategy - tying MCLR directly to VDD disables the reset function and may prevent debugger connection. The internal 8 MHz Fast RC oscillator has a +/- 2% tolerance; for USB applications requiring accurate baud rates, use an external 12 MHz crystal and the PLL.
Place the USB D+/D- differential pair on the top layer with a continuous ground plane beneath, and avoid routing over any plane splits or noisy power islands. Keep the pair length-matched within 2 mm and isolate from clock traces, switching regulators, and digital I/O by at least 3 mm. Add a common-mode choke (e.g. ACM2012) near the USB connector for EMI compliance on consumer products.
Информация о соответствии
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; this is an industrial-grade MCU. USB 2.0 FS compliance verified by USB-IF, see Microchip product page for certification ID.
