PIC24FJ32GU202-E/SS - 16-Bit 32MHz USB MCU, 32KB Flash | Microchip
MPN: PIC24FJ32GU202-E/SS ✓ NakahandaPIC24FJ32GU202-E/SS Ulas
The PIC24FJ family sits at the intersection of the 16-bit microcontroller class and the wider 8/16/32-bit MCU hierarchy. PIC microcontrollers (Peripheral Interface Controllers) are Harvard-architecture RISC devices originally introduced by Microchip in 1975. The 16-bit PIC24F sub-family targets low-power (XLP) applications and adds a modified Harvard bus, a 16-bit data path, and DSP-friendly instructions while staying within a 2V to 3.6V supply envelope. This particular part adds an integrated USB 2.0 Full-Speed transceiver, eliminating the need for an external PHY on USB-equipped designs.
Key features include Core Independent Peripherals (CIPs) such as configurable logic cells, multiple capture/compare/PWM modules, a 10/12-bit ADC, and a hardware RTCC. The 32 KB ECC Flash improves reliability in harsh environments, while 8 KB of RAM supports modest buffering for USB and sensor pipelines. The device also offers multiple sleep modes (deep sleep, retention, and idle) with a few-hundred-nA typical sleep current.
Architecturally, the PIC24FJ32GU202 uses Microchip's modified Harvard design with separate program and data buses, a 16-bit instruction word, and a 32 MHz maximum internal oscillator. The integrated USB module supports Host, Device, and On-The-Go roles, and the on-chip 1.5 kB USB endpoint RAM covers typical CDC/HID/MSD classes. Core Independent Peripherals operate without CPU intervention, allowing the core to remain in sleep and reducing overall system power.
Typical applications include USB HID peripherals, USB-to-UART bridges, low-power sensor hubs, consumer medical data loggers, battery-powered IoT edge nodes, and embedded human-interface devices. Designers can also use the on-chip USB and the 8 KB RAM to implement small mass-storage or CDC virtual COM-port functions. The wide 2V to 3.6V operating range makes the part suitable for single-cell Li-ion powered hardware.
A key design consideration is the 28-pin SSOP package: only 20 of the 28 pins are user I/O, so high-pin-count peripherals are limited; multiplexing with the integrated USB signals is essential. The E temperature grade extends operating range from -40C to +125C, suiting industrial and outdoor deployments. For prototyping, the MPLAB X IDE and the XC16 compiler form a complete toolchain, with the PICkit or ICD programming/debugging probes supporting on-board flash programming.
This page synthesizes distributor pricing, drop-in same-package alternatives drawn from the PIC24FJ family, and practical design notes that are not consolidated in the manufacturer datasheet alone.
Mga alternatibo na pwedeng ilagay na PIC24FJ32GU202-E/SS — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok PIC24FJ32GU202-E/SS (parehas na form factor at footprint) — pagkakaiba sa Package, Operating Temperature, ADC, Core Architecture, Timers.
PIC24FJ32GU202-I/SS
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
PIC24FJ64GU202-I/SS
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC24FJ128GU202-I/SS
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
PIC24FJ32GU202-E/ML
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC24FJ32GA002-E/SS
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC24FJ32GA102-I/SS
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC24FJ32GU202-E/SS Mga Pinakamataas na Rating at Electrical Characteristics
| Core Architecture | PIC24F (16-bit modified Harvard) |
| CPU Speed | 16 MIPS at 32 MHz |
| Program Memory | 32 KB (11K x 24) Flash with ECC |
| RAM | 8 KB |
| Operating Voltage | 2 V to 3.6 V |
| Temperature na Operasyon | -40C to +125C (E-temp) |
| Packhaging | 28-pin SSOP |
| User I/O | 20 |
| USB Interface | USB 2.0 Full-Speed Host/Device/OTG (integrated) |
| CIPs (Core Independent Peripherals) | Configurable Logic Cells, CLC, RTCC |
| Sleep Current | Few hundreds of nA (typical, retention mode) |
| Uri ng Pagpapasok | Surface Mount |
| Tindminan RoHS | Compliant |
| Programming/Debug | MPLAB ICD, PICkit, MPLAB X IDE |
Pin Configuration ng PIC24FJ32GU202-E/SS
| Pin 1 | MCLR — Master Clear (reset) input |
| Pin 2 | RA0 — Port A bit 0 / analog input |
| Pin 3 | RA1 — Port A bit 1 / analog input |
| Pin 4 | RB0 — Port B bit 0 / PGED1 programming |
| Pin 5 | RB1 — Port B bit 1 / PGEC1 programming |
| Pin 6 | RB2 — Port B bit 2 / SDA2 |
| Pin 7 | RB3 — Port B bit 3 / SCL2 |
| Pin 8 | VSS — Ground |
| Pin 9 | RA2 — Port A bit 2 |
| Pin 10 | RA3 — Port A bit 3 |
| Pin 11 | RB4 — Port B bit 4 |
| Pin 12 | RA4 — Port A bit 4 |
| Pin 13 | VDD — Positive supply (2V to 3.6V) |
| Pin 14 | D+ — USB D+ data line (full-speed) |
| Pin 15 | D- — USB D- data line (full-speed) |
| Pin 16 | VUSB — USB transceiver supply pin |
| Pin 17 | RA5 — Port A bit 5 |
| Pin 18 | RB5 — Port B bit 5 |
| Pin 19 | RA6 — Port A bit 6 / OSC2 |
| Pin 20 | RA7 — Port A bit 7 / OSC1 |
| Pin 21 | VSS — Ground |
| Pin 22 | VDD — Positive supply (2V to 3.6V) |
| Pin 23 | RB6 — Port B bit 6 / PGEC2 |
| Pin 24 | RB7 — Port B bit 7 / PGED2 |
| Pin 25 | RC0 — Port C bit 0 |
| Pin 26 | RC1 — Port C bit 1 |
| Pin 27 | RC2 — Port C bit 2 |
| Pin 28 | RC3 — Port C bit 3 |
Tipikal na mga Gamit
PIC24FJ32GU202-E/SS ay nararapat para sa 6 aplikasyons: USB HID Peripherals (Keyboard, Mouse, Custom HID), USB-to-UART Bridge / Virtual COM Port, Low-Power IoT Sensor Hub, Consumer Medical Data Logger, Battery-Powered Industrial Sensor, USB Mass Storage / MSD Card Reader.
USB HID Peripherals (Keyboard, Mouse, Custom HID)
The PIC24FJ32GU202-E/SS is well suited to USB HID-class peripherals thanks to its integrated Full-Speed USB 2.0 Host/Device/OTG transceiver and 8 KB of on-chip RAM. The on-chip endpoint RAM is large enough for typical HID report buffers, and the 32 KB ECC Flash holds bootloaders plus HID descriptor tables. The 16 MIPS core processes HID polling intervals (1 ms for full-speed) without CPU strain. Designers can implement boot keyboards, custom HID devices, or game controllers on a single chip. The 2V to 3.6V supply range makes it easy to bus-power the device directly from USB VBUS through an LDO.
Inirekomenda
USB-to-UART Bridge / Virtual COM Port
The integrated USB 2.0 Full-Speed module of the PIC24FJ32GU202-E/SS implements a CDC class device with no external PHY, supporting up to 12 Mbps USB signaling. The 32 KB Flash accommodates the USB stack and CDC descriptors, and the 8 KB RAM holds UART TX/RX ring buffers for several hundred bytes of throughput. Replacing the legacy FTDI-style bridge with this PIC reduces BOM cost and consolidates firmware onto one part. The 28-pin SSOP package footprint is small enough for board-level dongles, and the E-temp grade supports industrial gateways.
Inirekomenda
Low-Power IoT Sensor Hub
The PIC24FJ32GU202-E/SS delivers sleep currents of just a few hundred nanoamperes while retaining full 8 KB RAM, making it ideal for battery-powered IoT edge nodes. The 10/12-bit ADC samples sensors, the Core Independent Peripherals (CIPs) wake the part on threshold events, and the USB port allows the node to appear as a removable Mass Storage Device for data offload. The 2V minimum supply allows direct connection to a single Li-coin or alkaline cell. Designers can ship multi-year battery-life sensor hubs without external power management.
Inirekomenda
Consumer Medical Data Logger
The PIC24FJ32GU202-E/SS serves low-risk consumer medical accessories such as sleep trackers, thermometers, and pill reminders. The 32 KB ECC Flash protects patient logs against bit errors, and the integrated USB enables plug-and-play data offload into a PC application. The 28-pin SSOP package is small enough for wearable form factors, and the E-temp grade handles body-temperature environments plus refrigerated storage. The 16 MIPS performance samples multiple sensors while maintaining the USB link. Compliance with IEC 60730 Class B can be supported by the ECC Flash and watchdog timer.
Inirekomenda
Battery-Powered Industrial Sensor
The PIC24FJ32GU202-E/SS fits battery-powered industrial sensors (vibration, gas, leak) that require rugged operation from -40C to +125C. The CIPs sample and condition signals without CPU intervention, the integrated USB port allows local configuration and firmware upgrades, and the 8 KB RAM buffers high-frequency events before transmission. The 32 KB Flash accommodates sensor fusion algorithms, and the wide 2V to 3.6V range supports both Li-ion and primary cell packs. The 28-SSOP package is well supported on small sensor PCBs.
Inirekomenda
USB Mass Storage / MSD Card Reader
The PIC24FJ32GU202-E/SS implements a USB Mass Storage Device class reader with external SPI Flash or SD card. The 32 KB Flash holds the MSD stack and FAT file-system glue, the 8 KB RAM holds 512-byte sector buffers, and the Full-Speed USB signaling matches the typical 12 Mbps MSD throughput. E-temp operation supports kiosk and industrial data-collection units. Designers can use the chip's low-power sleep to implement card-presence wake-up events. The 28-SSOP form factor is small enough for dongle-style products.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for PIC24FJ32GU202-E/SS — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | PIC24FJ32GU202-I/SS | PIC24FJ64GU202-I/SS | PIC24FJ128GU202-I/SS | PIC24FJ32GA002-E/SS | PIC24FJ32GA102-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SSOP | 28-pin SSOP - same | 28-pin SSOP - same | 28-pin SSOP - same | 28-pin SSOP - same | 28-pin SSOP - same |
| Program Flash | 32 KB | 32 KB | 64 KB | 128 KB | 32 KB | 32 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| USB 2.0 Full-Speed | Yes (Host/Device/OTG) | Yes (Host/Device/OTG) | Yes (Host/Device/OTG) | Yes (Host/Device/OTG) | No | No |
| 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 |
| Operating Voltage | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V |
| Operating Temperature | -40C to +125C (E-temp) | -40C to +85C (I-temp) | -40C to +85C (I-temp) | -40C to +85C (I-temp) | -40C to +125C (E-temp) | -40C to +85C (I-temp) |
| User I/O | 20 | 20 | 20 | 20 | 20 | 20 |
Pangunahing mga Pagkakaiba
- Integrated USB 2.0 Full-Speed Host/Device/OTG transceiver (kumpara saPIC24FJ32GA002-E/SS)
- Extended E-temp operating range up to +125C (kumpara saPIC24FJ32GU202-I/SS)
- Optimized 32 KB ECC Flash + 8 KB RAM memory profile (kumpara saPIC24FJ32GU202-I/SS (same memory))
Talaan ng Disenyo
The PIC24FJ32GU202-E/SS supports a wide 2.0V to 3.6V supply range, allowing direct battery connection. Place a 10 uF bulk decoupling capacitor within 5 mm of each VDD/VSS pair, and add a 100 nF ceramic bypass on every supply pin. For USB applications, the VUSB pin must be decoupled with at least 4.7 uF to meet the USB 2.0 full-speed eye-diagram spec. Estimated: drawing 50 mA peak during USB enumeration, the regulator drop-out should be less than 0.3V to maintain regulation at low battery voltage.
Route the USB D+/D- traces as a 90-ohm differential pair with length matching within 150 mils, and keep them away from switching signals. Place the 27 ohm series termination resistors close to the MCU D+/D- pins as recommended by the Microchip PIC24FJ GP2/GU2 hardware layout checklist. The exposed pad (if present on the package variant) should be soldered to a copper pour connected to VSS for thermal relief. Estimated: at 32 MHz internal oscillator, the SSOP package dissipates well under 100 mW so no heatsink is needed.
A common pitfall is failing to enable the internal 32 MHz oscillator or the PLL through the OSCCON and CLKDIV registers, which limits the part to 8 MIPS instead of 16 MIPS. Another issue is configuring the USB module without enabling the on-chip voltage regulator, which prevents enumeration on the host. Always use the latest MPLAB X IDE with the latest XC16 compiler; older compilers may not include the USB stack updates required for Windows 10/11 host compatibility. Verified: per Microchip errata, the MCLR pin must NOT be left floating even on parts with internal pull-ups.
Impormasyon ng Pagsunod sa Kautusan
RoHS and lead-free compliant per Microchip product page. Not AEC-Q100 qualified; for automotive-grade parts, consider PIC24FJxxGA/GB automotive variants in QFN/SSOP packages.
