PIC24FJ256GB206-I/PT - 16-Bit 32MHz 256KB Flash USB MCU | Microchip
MPN: PIC24FJ256GB206-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.1 | $9.10 |
| 10 | $8.55 | $85.50 |
| 100 | $7.62 | $762.00 |
| 500 | $6.83 | $3,415.00 |
| 1,000 | $6.04 | $6,040.00 |
PIC24FJ256GB206-I/PT Overview
A PIC24F microcontroller is a 16-bit reduced-instruction-set computing (RISC) MCU in the broader hierarchy microcontroller -> embedded processor -> integrated circuit -> semiconductor. The PIC24F family specifically targets low-power, USB-capable, and human-interface designs where cost-effective 16-bit performance is required. PIC24F parts sit between PIC16F/PIC18F 8-bit microcontrollers and dsPIC33 16-bit digital signal controllers, offering a balance of code density, peripherals, and power efficiency.
Key features of the PIC24FJ256GB206 include 256KB (85.5K x 24) of self-programmable Flash with ECC, 96KB SRAM, USB 2.0 OTG (host or device), up to 16 MIPS performance at 32 MHz, a 10-bit 500 ksps A/D converter with up to 16 channels, four UART modules, three SPI, three I2C, five 16-bit timers, two comparators, and a Parallel Master Port (PMP) for graphics or external memory. The integrated 32 kHz low-power secondary oscillator supports real-time clock operation in deep sleep.
The architecture uses a 16-bit modified Harvard core with a 24-bit instruction word, separate program and data buses, a 16-element register file, and a hardware multiply/divide unit. The integrated USB PHY and full OTG stack (with charge pump support) remove the need for an external transceiver, while CTMU (Charge Time Measurement Unit) enables touch and capacitive sensing. The peripheral pin-select (PPS) remapper simplifies PCB routing by allowing many digital functions to be assigned to a wide range of I/O pins.
Typical applications include USB peripherals such as mass storage, HID, CDC virtual COM ports and audio class devices, embedded human-machine interface (HMI) panels with graphics or segment displays, handheld instrumentation, point-of-sale terminals, medical data loggers, and industrial sensor nodes with USB diagnostics ports. The 96KB RAM is large enough to buffer USB isochronous traffic and hold graphic frame buffers for low-resolution TFTs.
When designing with this part, use the on-chip 3.3V LDO regulator with a 4.7uF output capacitor and add ESD protection on VBUS for host-mode robustness. For USB device firmware, the Microchip MLA or Harmony framework provides ready-validated class drivers. Verify the VUSB 3.3V rail remains stable under full OTG transient load.
This page synthesizes distributor pricing, drop-in 64-TQFP alternatives, and practical PCB/USB design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC24FJ256GB206-I/PT — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC24FJ256GB206-I/PT (same form factor and footprint) — differing in Package, ADC, MSL Level, USB Interface, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ256GB206T-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ256GB210-I/PT
✅ Drop-In✓ In Stock
$6.79 / Unit
View Datasheet →PIC24FJ256GB110-I/PT
✅ Drop-In✓ In Stock
$5.62 / Unit
View Datasheet →PIC24FJ256GB108-I/PT
✅ Drop-In✓ In Stock
$5.42 / Unit
View Datasheet →PIC24FJ256DA206-I/PT
✅ Drop-In✓ In Stock
$5.39 / Unit
View Datasheet →PIC24FJ256GB106-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ256GB206-I/PT Maximum Ratings & Electrical Characteristics
| Series | PIC24F |
| Core | PIC 16-bit RISC |
| Core Size | 16-bit, 24-bit instruction |
| Program Memory | 256 KB (85.5K x 24) Flash |
| RAM | 96 KB |
| Max CPU Frequency | 32 MHz (16 MIPS) |
| Supply Voltage | 2.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (industrial) |
| USB Interface | USB 2.0 FS On-The-Go (Host or Device) |
| A/D Converter | 10-bit, up to 16 channels, 500 ksps |
| UART | 4 |
| SPI | 3 |
| I2C | 3 |
| Timers | 5 x 16-bit |
| Comparators | 2 |
| Package | TQFP-64 (PT), 10x10 mm |
| I/O Pins | 52 |
| PMP | Yes (Parallel Master Port) |
| CTMU | Yes |
| PPS | Peripheral Pin Select |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC24FJ256GB206-I/PT Pin Configuration
| Pin 1 | RG15 — I/O port pin |
| Pin 2 | RG14 — I/O port pin |
| Pin 3 | RG13 — I/O port pin |
| Pin 4 | RG12 — I/O port pin |
| Pin 5 | RG11 — I/O port pin |
| Pin 6 | RG10 — I/O port pin |
| Pin 7 | RG9 — I/O port pin |
| Pin 8 | RG8 — I/O port pin |
| Pin 9 | RG7 — I/O port pin |
| Pin 10 | RG6 — I/O port pin |
| Pin 11 | RC1 — I/O port pin |
| Pin 12 | RC2 — I/O port pin |
| Pin 13 | RC3 — I/O port pin |
| Pin 14 | RC4 — I/O port pin |
| Pin 15 | VDD — Supply voltage (2.0V-3.6V) |
| Pin 16 | VSS — Ground reference |
| Pin 17 | RA0 — I/O port pin / AN0 |
| Pin 18 | RA1 — I/O port pin / AN1 |
| Pin 19 | RA2 — I/O port pin / AN2 |
| Pin 20 | RA3 — I/O port pin / AN3 |
| Pin 21 | RA4 — I/O port pin / AN4 |
| Pin 22 | RA5 — I/O port pin / AN5 |
| Pin 23 | RA6 — I/O port pin / AN6 |
| Pin 24 | RA7 — I/O port pin / AN7 |
| Pin 25 | AVDD — Analog supply voltage |
| Pin 26 | AVSS — Analog ground reference |
| Pin 27 | RB0 — I/O port pin / AN8 |
| Pin 28 | RB1 — I/O port pin / AN9 |
| Pin 29 | RB2 — I/O port pin / AN10 |
| Pin 30 | RB3 — I/O port pin / AN11 |
| Pin 31 | RB4 — I/O port pin / AN12 |
| Pin 32 | RB5 — I/O port pin / AN13 |
| Pin 33 | RB6 — I/O port pin / AN14 |
| Pin 34 | RB7 — I/O port pin / AN15 |
| Pin 35 | RC12 — I/O port pin |
| Pin 36 | RC13 — I/O port pin |
| Pin 37 | RC14 — I/O port pin |
| Pin 38 | RC15 — I/O port pin |
| Pin 39 | OSC1 — Crystal oscillator input |
| Pin 40 | OSC2 — Crystal oscillator output |
| Pin 41 | SOSCO — Secondary oscillator output (32 kHz) |
| Pin 42 | SOSCI — Secondary oscillator input (32 kHz) |
| Pin 43 | VDD — Supply voltage |
| Pin 44 | VSS — Ground reference |
| Pin 45 | RD0 — I/O port pin |
| Pin 46 | RD1 — I/O port pin |
| Pin 47 | RD2 — I/O port pin |
| Pin 48 | RD3 — I/O port pin |
| Pin 49 | RD4 — I/O port pin |
| Pin 50 | RD5 — I/O port pin |
| Pin 51 | RD6 — I/O port pin |
| Pin 52 | RD7 — I/O port pin |
| Pin 53 | RD8 — I/O port pin |
| Pin 54 | RD9 — I/O port pin |
| Pin 55 | RD10 — I/O port pin |
| Pin 56 | RD11 — I/O port pin |
| Pin 57 | RD12 — I/O port pin |
| Pin 58 | RD13 — I/O port pin |
| Pin 59 | RD14 — I/O port pin |
| Pin 60 | RD15 — I/O port pin |
| Pin 61 | RF4 — I/O port pin |
| Pin 62 | RF5 — I/O port pin |
| Pin 63 | VBUS — USB VBUS detect input |
| Pin 64 | VUSB — USB 3.3V LDO output |
Typical Applications
PIC24FJ256GB206-I/PT is suitable for 7 applications: USB Human Interface Device (HID) Peripherals, USB Mass Storage and CDC Devices, Embedded HMI and Graphic Display Panels, Portable Data Acquisition and Instrumentation, Industrial Sensor Nodes with USB Diagnostics, Medical and Wellness Connected Devices, Audio USB Streaming Devices.
USB Human Interface Device (HID) Peripherals
The PIC24FJ256GB206-I/PT is purpose-built for USB HID peripherals such as keyboards, mice, game controllers, and custom input devices. Its integrated USB 2.0 full-speed On-The-Go transceiver eliminates the need for an external PHY, and the 32 MHz/16 MIPS core easily handles HID report processing at the 1 ms polling rate. The 96KB RAM allows ample HID report buffering, while 256KB Flash stores USB stacks and application code comfortably. Designers should pair this MCU with the Microchip MLA or Harmony HID class driver and add ESD protection on VBUS/D+/D- for production reliability. The 2.0V-3.6V operating range allows direct bus-powered designs.
Recommended
USB Mass Storage and CDC Devices
USB mass storage and CDC virtual COM port designs benefit from the PIC24FJ256GB206-I/PT's 96KB RAM for sector buffering and integrated USB OTG controller. The MCU can directly drive an SD card or external SPI Flash for mass storage while presenting a USB MSC interface to the host, with the 16 MIPS core providing headroom for file system overhead (FAT12/16/32). For CDC applications, the 4 UARTs and 32 MHz core enable reliable virtual COM port bridging to RS-232/RS-485 devices. The industrial -40C to +85C range supports factory and field deployments.
Recommended
Embedded HMI and Graphic Display Panels
The PIC24FJ256GB206-I/PT drives small TFT or segment LCD HMI panels through its Parallel Master Port (PMP) and peripheral pin select (PPS). With 96KB RAM it can hold single-frame graphics buffers for low-resolution displays, while the 32 MHz core updates content smoothly. Designers commonly use this part with the Microchip Graphics library to render menus, gauges, and status icons. CTMU enables capacitive touch buttons without an external touch controller, reducing BOM cost. The 64-pin TQFP exposes enough I/O for display, keypad, and communication buses.
Recommended
Portable Data Acquisition and Instrumentation
Battery-powered data loggers and handheld instruments leverage the PIC24FJ256GB206-I/PT's 10-bit 500 ksps ADC (up to 16 channels), 96KB RAM for sample buffering, and USB device mode for charging/data offload. The on-chip 32 kHz secondary oscillator drives RTC operation in deep sleep, allowing multi-week battery life for periodic sampling applications. Industrial temperature rating supports outdoor and factory environments. The USB OTG port also serves as a charging input when paired with the on-chip LDO.
Recommended
Industrial Sensor Nodes with USB Diagnostics
Factory automation nodes use the PIC24FJ256GB206-I/PT to aggregate sensor data over UART/SPI/I2C and present a USB CDC diagnostics port to engineers. With 3 SPI, 3 I2C, and 4 UART interfaces, the MCU can bridge multiple sensor buses simultaneously while keeping a USB maintenance channel open. The industrial -40C to +85C rating tolerates cabinet environments, and the 256KB Flash supports Modbus, MQTT, or proprietary protocols. The CTMU enables capacitive front-panel buttons without extra ICs.
Recommended
Medical and Wellness Connected Devices
Connected medical devices such as glucose meters, pulse oximeters, and patient wearables use the PIC24FJ256GB206-I/PT for its low-power deep-sleep modes, USB device charging, and 96KB RAM for waveform buffering. The 32 kHz RTC oscillator enables accurate timestamping of medical events while keeping current draw in the microamp range. The 16 MIPS core performs basic signal conditioning algorithms in firmware, while USB device mode allows direct data transfer to a host PC for review. Industrial temperature range covers typical clinical and home environments.
Recommended
Audio USB Streaming Devices
USB audio class devices such as USB microphones, headsets, and audio adapters benefit from the PIC24FJ256GB206-I/PT's 96KB RAM and integrated USB OTG. The MCU can run a USB Audio Class 1.0 device stack while handling basic audio processing at 16 MIPS. Although not a DSP, the part handles mono 16-bit audio at standard sample rates comfortably. PPS simplifies routing of I2S or PCM interfaces to digital audio codecs, and the 2.0V-3.6V range aligns with codec supply rails.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ256GB206-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ256GB206T-I/PT | PIC24FJ256GB210-I/PT | PIC24FJ256GB110-I/PT |
|---|---|---|---|---|
| Package | TQFP-64 (PT) | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB |
| RAM | 96 KB | 96 KB | 96 KB | 96 KB |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| USB Interface | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG |
| I/O Pins | 52 | 52 | 52 | 85 |
| Operating Voltage | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Larger RAM (96KB) than most 8-bit Microchip MCUs (vs PIC24FJ256GA108-I/PT)
- On-chip USB OTG with integrated PHY and charge pump (vs PIC24FJ256DA206-I/PT)
- PPS flexibility for simplified PCB routing (vs PIC24FJ256GB210-I/PT)
- Industrial temperature range and 256KB Flash headroom (vs PIC24FJ256GB110-I/PT)
Design Notes
The PIC24FJ256GB206-I/PT has an on-chip 3.3V LDO regulator that powers the USB PHY. Place a 4.7uF low-ESR ceramic capacitor on the VUSB pin (pin 64) to stabilize the regulator output, as called out in the Microchip datasheet. For bus-powered designs, ensure VBUS has sufficient capacitance (typically 10uF) on the host side, and add ESD protection (e.g., USBLC6-2SC6) on D+/D- to survive hot-plug events. Decouple each VDD pin (15 and 43) with 100nF ceramic to local VSS.
Route USB D+ and D- as a 90-ohm differential pair with matched length (delta less than 150 mil) and keep them away from switching nodes or oscillators. Place the 27 ohm series termination resistors as close as possible to the MCU pins. Provide a continuous ground reference plane beneath the USB traces and stitch vias around the TQFP-64 perimeter to reduce EMI. Keep the 12 MHz crystal traces short and surround them with a ground ring.
Common pitfalls: (1) Forgetting the ENVREG capacitor on PIC24FJ devices causes USB PHY failure; consult the datasheet pin descriptions. (2) Programming requires VDD at 3.0V minimum during Flash writes. (3) The CTMU and PMP modules need careful peripheral pin-select configuration to avoid conflicts. (4) Deep-sleep current spec assumes the secondary 32 kHz oscillator is enabled and configured for RTC; otherwise RAM retention current rises significantly.
For reliable USB FS signaling at 12 Mbps, source-impedance match the D+/D- lines to 90 ohms differential. Use Microchip's MLA USB stack only with a validated 12 MHz crystal or active oscillator; frequency error must stay within +/- 0.25% (3000 ppm) to remain within USB spec. Series ferrite beads on VBUS add hot-plug noise suppression. When operating in USB host mode, provide at least 100mA of upstream current capacity on the 5V rail.
Compliance Information
RoHS and lead-free per Microchip product page. Industrial -40C to +85C temperature grade only - AEC-Q100 automotive grade parts exist in PIC24F family but require specific part numbers.