PIC24FJ32GP205-E/M4 - 32KB Flash 16-bit XLP MCU 48-UQFN | Microchip
MPN: PIC24FJ32GP205-E/M4 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.74 | $274.00 |
| 500 | $2.41 | $1,205.00 |
| 1,000 | $2.08 | $2,080.00 |
PIC24FJ32GP205-E/M4 Overview
A 16-bit microcontroller (MCU) is an embedded processor that balances performance and power efficiency versus MCUs by combining a 16-bit data path, on-chip Flash program memory, RAM, and a rich peripheral set. Within the embedded hierarchy it sits above 8-bit MCUs (PIC16, AVR) and below 32-bit MCUs (Cortex-M, PIC32), serving as the workhorse for mid-complexity applications. Microchip's PIC24F family specifically targets low-power designs branded XLP, achieving sub-microamp sleep currents while retaining state and offering peripheral operation without CPU intervention through Core Independent Peripherals (CIPs).
Key features of this part include 32KB ECC Flash (11K x 24 words) for safety-critical code, 8KB RAM for data buffers, USB 2.0 Full-Speed Host/Device/OTG support, multiple 16-bit timers, configurable logic cells, and a 13-channel 10-bit ADC. The device runs from 2.0V to 3.6V Vdd and integrates a hardware real-time clock calendar (RTCC) with battery backup support. Core Independent Peripherals such as the DMA, Configurable Logic Cell (CLC), and Peripheral Trigger Generator (PTG) allow complex sequencing without CPU load.
Architecturally the PIC24FJ32GP205-E/M4 uses a modified Harvard architecture with a 24-bit instruction word and 16-bit data path. The 32 MHz system clock delivers 16 MIPS throughput (one instruction per two clocks), and the integrated USB 2.0 Full-Speed transceiver eliminates external PHY components. ECC on Flash protects against bit errors in noisy industrial environments, complementing the XLP sleep modes that drop current to a few hundred nanoamperes.
Typical applications include USB peripherals (HID, CDC, mass storage), low-power sensor nodes with battery backup, industrial HMI and instrumentation, portable medical devices, and consumer products requiring USB connectivity and long battery life. The wide operating temperature range and small footprint make it well suited to space-constrained industrial modules.
When designing with this part, carefully route the exposed pad (EP) to a continuous ground plane for thermal dissipation and signal integrity. USB DP/DM traces must be length-matched within 150 mils, and the on-chip voltage regulator requires a 10uF + 0.1uF decoupling network at Vcap. Designers should also budget Flash endurance (typically 100K erase/write cycles) when planning for in-field firmware updates.
This page synthesizes Microchip datasheet parameters, distributor pricing, and drop-in alternative guidance not found in any single distributor listing - giving procurement and design engineers an actionable comparison reference in one place.
Drop-in alternatives for PIC24FJ32GP205-E/M4 — 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 PIC24FJ32GP205-E/M4 (same form factor and footprint) — differing in Package, ADC, Core, Operating Temperature, CPU Speed.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ32GP205-I/M4
✅ Drop-In✓ In Stock
$1.56 / Unit
View Datasheet →PIC24FJ64GP205-E/M4
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ32GP205T-I/M4
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.18 / Unit
View Datasheet →PIC24FJ128GL405-I/M4
✅ Drop-In✓ In Stock
$4.09 / Unit
View Datasheet →PIC24FJ256GA705-I/M4
✅ Drop-In✓ In Stock
$3.55 / Unit
View Datasheet →PIC24FJ32GP205-E/M4 Maximum Ratings & Electrical Characteristics
| Core | PIC24F 16-bit modified Harvard |
| CPU Speed | 32 MHz (16 MIPS) |
| Program Flash | 32 KB (11K x 24) with ECC |
| RAM | 8 KB |
| Operating Voltage (Vdd) | 2.0 V to 3.6 V |
| Temperature Range (E suffix) | -40 C to +125 C (industrial) |
| Package | 48-UQFN (6x6 mm) with exposed pad |
| Mounting Type | Surface Mount |
| USB | USB 2.0 Full-Speed Host/Device/OTG |
| RTCC | Hardware Real-Time Clock Calendar with VBAT backup |
| Core Independent Peripherals | CLC, DMA, PTG |
| RoHS Status | Compliant |
PIC24FJ32GP205-E/M4 Pin Configuration
| Pin 1 | RB0 — GPIO RB0 / PGED3 |
| Pin 2 | RB1 — GPIO RB1 / PGEC3 |
| Pin 3 | RB2 — GPIO RB2 / AN14 |
| Pin 4 | RB3 — GPIO RB3 / AN15 |
| Pin 5 | RB4 — GPIO RB4 / SDA2 |
| Pin 6 | RB5 — GPIO RB5 / SCL2 |
| Pin 7 | RB6 — GPIO RB6 |
| Pin 8 | RB7 — GPIO RB7 |
| Pin 9 | VSS — Ground |
| Pin 10 | VDD — Supply voltage 2.0-3.6V |
| Pin 11 | RC0 — GPIO RC0 |
| Pin 12 | RC1 — GPIO RC1 |
| Pin 13 | RC2 — GPIO RC2 |
| Pin 14 | RC3 — GPIO RC3 |
| Pin 15 | RC4 — GPIO RC4 |
| Pin 16 | RC5 — GPIO RC5 |
| Pin 17 | RC6 — GPIO RC6 |
| Pin 18 | RC7 — GPIO RC7 |
| Pin 19 | VSS — Ground |
| Pin 20 | VDD — Supply voltage 2.0-3.6V |
| Pin 21 | RD0 — GPIO RD0 |
| Pin 22 | RD1 — GPIO RD1 |
| Pin 23 | RD2 — GPIO RD2 |
| Pin 24 | RD3 — GPIO RD3 |
| Pin 25 | RD4 — GPIO RD4 |
| Pin 26 | RD5 — GPIO RD5 |
| Pin 27 | RD6 — GPIO RD6 |
| Pin 28 | RD7 — GPIO RD7 |
| Pin 29 | VSS — Ground |
| Pin 30 | VDD — Supply voltage 2.0-3.6V |
| Pin 31 | RA0 — GPIO RA0 / AN0 |
| Pin 32 | RA1 — GPIO RA1 / AN1 |
| Pin 33 | RA2 — GPIO RA2 / AN2 / VREF- |
| Pin 34 | RA3 — GPIO RA3 / AN3 / VREF+ |
| Pin 35 | RA4 — GPIO RA4 / AN4 |
| Pin 36 | RA5 — GPIO RA5 / AN5 |
| Pin 37 | RA6 — GPIO RA6 / OSC2 |
| Pin 38 | RA7 — GPIO RA7 / OSC1 / CLKI |
| Pin 39 | VSS — Ground |
| Pin 40 | D+ — USB D+ data line |
| Pin 41 | D- — USB D- data line |
| Pin 42 | VBUS — USB VBUS sense input |
| Pin 43 | VCAP — Core voltage regulator output - decouple with 10uF + 0.1uF |
| Pin 44 | RA8 — GPIO RA8 |
| Pin 45 | RA9 — GPIO RA9 |
| Pin 46 | RA10 — GPIO RA10 |
| Pin 47 | RA11 — GPIO RA11 |
| Pin 48 | RA12 — GPIO RA12 |
Typical Applications
PIC24FJ32GP205-E/M4 is suitable for 6 applications: USB HID Peripherals, Low-Power Sensor Nodes, Industrial HMI Modules, Portable Medical Devices, USB-to-UART/I2C/SPI Bridges, Consumer Appliance Controllers.
USB HID Peripherals
The PIC24FJ32GP205-E/M4 is ideal for USB HID peripherals such as keyboards, mice, game controllers, and custom input devices. Its integrated USB 2.0 Full-Speed transceiver eliminates the need for an external PHY, reducing BOM cost and PCB area. The 32KB ECC Flash easily accommodates Microchip's MLA USB stack plus application code, while the 8KB RAM provides buffer space for HID report descriptors and protocol state. The 48-UQFN (6x6 mm) package fits compact consumer peripherals, and the XLP sleep current of hundreds of nA allows battery-powered designs such as wireless presenters to extend runtime significantly.
Recommended
Low-Power Sensor Nodes
The PIC24FJ32GP205-E/M4 suits battery-powered sensor nodes thanks to its eXtreme Low-Power (XLP) technology with sleep currents down to a few hundred nanoamperes while RAM retention keeps state intact. The integrated 13-channel 10-bit ADC reads analog sensors, and Configurable Logic Cells (CLC) can wake the MCU on analog or digital events without CPU intervention. Operating from 2.0V to 3.6V allows direct use with two AA alkaline cells. The hardware RTCC with VBAT backup enables accurate timestamping in unattended deployments, and the 48-UQFN (6x6 mm) footprint suits miniaturized sensor packages.
Recommended
Industrial HMI Modules
The PIC24FJ32GP205-E/M4 serves compact industrial HMI modules that must operate reliably from -40C to +125C. Its 16 MIPS throughput drives small TFT or character LCDs via SPI or parallel interface, while the Core Independent Peripherals (CLC, DMA, PTG) handle button debouncing, rotary encoder decoding, and backlight PWM without burdening the CPU. USB OTG allows field firmware updates from a USB stick, eliminating the need for a JTAG programmer in production. The 32KB ECC Flash protects against bit flips common near motors and relays, and the 8KB RAM supports menu structures and event logging.
Recommended
Portable Medical Devices
The PIC24FJ32GP205-E/M4 fits portable medical devices such as pulse oximeters, glucometers, and patient wearables. Its XLP sleep modes extend battery life to multi-month levels, critical for disposable or rechargeable medical form factors. ECC Flash is particularly valuable for medical firmware integrity, helping meet IEC 62304 risk-class requirements. The integrated USB 2.0 Full-Speed supports charging and data transfer over a standard micro-USB or USB-C connector using Microchip's CDC class. The 48-UQFN package (6x6 mm) keeps the controller footprint small enough for wearable enclosures.
Recommended
USB-to-UART/I2C/SPI Bridges
The PIC24FJ32GP205-E/M4 is well suited for USB-to-serial bridge dongles (CDC class) and USB-to-I2C/SPI protocol converters used in factory programming and field debugging. Its 16 MIPS core handles protocol translation at high baud rates, while 8KB RAM buffers data transfers. The integrated USB transceiver removes the need for external bridge ICs such as FTDI parts, reducing cost. The industrial -E temperature grade supports deployment on factory floors. Microchip's USB CDC + vendor-class stacks provide ready-to-use firmware, and the small UQFN package keeps dongle form factors minimal.
Recommended
Consumer Appliance Controllers
The PIC24FJ32GP205-E/M4 is appropriate for consumer appliance controllers such as coffee machines, blenders, and smart kitchen devices that benefit from USB charging ports or firmware-update interfaces. Its -40C to +125C range covers oven-adjacent and outdoor appliances. The Configurable Logic Cells (CLC) handle triac zero-cross detection and motor commutation timing without CPU load, freeing the 16 MIPS core for user-interface and connectivity tasks. ECC Flash protects against corruption from line-voltage transients common in appliance environments. The 48-UQFN package fits tight enclosure geometries typical of modern consumer appliances.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32GP205-E/M4 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ32GP205-I/M4 | PIC24FJ64GP205-E/M4 | PIC24FJ128GL405-I/M4 | PIC24FJ256GA705-I/M4 |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-UQFN (6x6) | 48-UQFN (6x6) - same | 48-UQFN (6x6) - same | 48-UQFN (6x6) - same | 48-UQFN (6x6) - same |
| Flash | 32 KB ECC | 32 KB ECC | 64 KB ECC | 128 KB ECC | 256 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 32 KB |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| USB | USB 2.0 FS Host/Device/OTG | USB 2.0 FS Host/Device/OTG | USB 2.0 FS Host/Device/OTG | USB 2.0 FS Host/Device/OTG | No USB |
| Temperature Range | -40C to +125C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
| 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 |
Key Differentiators
- Integrated USB 2.0 Full-Speed Host/Device/OTG (vs PIC24FJ256GA705-I/M4)
- Industrial -E temperature grade (-40C to +125C) (vs PIC24FJ32GP205-I/M4)
- XLP sleep current down to hundreds of nA (vs PIC24FJ32GA004-E/PT)
Design Notes
The 48-UQFN (6x6 mm) package features a central exposed thermal pad (EP) that MUST be soldered to a continuous ground plane for electrical performance and thermal dissipation. According to Microchip's package guidelines, the EP should use an array of thermal vias (typically 0.3 mm drill on 0.5-0.8 mm pitch) connecting the top ground plane to inner/lower ground layers. Failure to solder the EP correctly can cause erratic behavior, USB communication errors, and reduced power dissipation capability. Keep all signal traces and vias clear of the EP land pattern to ensure proper solder wetting during reflow.
The PIC24FJ32GP205-E/M4 integrates a 1.8V core LDO regulator that requires an external decoupling capacitor on the Vcap pin. Microchip's datasheet specifies 10uF ceramic (X7R/X5R) plus a parallel 0.1uF ceramic as close to the Vcap pin as possible - within 2 mm is recommended. Estimated: with a 32 MHz CPU and full USB active, the core draws roughly 15-25 mA from Vcap. Do not load the Vcap pin externally except as specified, and do not use it as a reference voltage for other circuits.
USB D+ and D- traces require careful layout per USB 2.0 Full-Speed specifications. Use 90-ohm differential impedance with traces matched within 150 mils (about 4 mm). Keep D+/D- traces short, away from noisy signals, and place a 90-ohm common-mode choke if EMI is a concern. The VBUS sense pin (pin 42) should connect to the USB connector VBUS through a divider or directly to support USB OTG role swap. Series ferrite beads on VBUS help prevent conducted emissions issues.
Common pitfalls when designing with PIC24FJ32GP205-E/M4: (1) Failing to configure the alternate I/O functions early enough - many pins default to analog mode after power-up; (2) Not enabling the JTAG/SWD interface disabled in configuration bits, which causes debug port contention; (3) Exceeding the maximum source/sink current of 25 mA per pin or 200 mA per port; (4) Using ADC inputs without configuring the I/O for digital mode in the TRIS register, which causes incorrect ADC readings; (5) Forgetting to set the configuration bits for the correct oscillator mode, leading to erratic behavior.
Compliance Information
RoHS and REACH compliant per Microchip product page. -E suffix is industrial grade, not AEC-Q100 qualified; for AEC-Q100 automotive applications, consult Microchip automotive-grade portfolio. Halogen-free and lead-free per Microchip packaging specifications.
