PIC24FJ64GA102T-I/SO - 64KB Flash 16-bit XLP MCU | Microchip
MPN: PIC24FJ64GA102T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.42 | $4.42 |
| 10 | $3.94 | $39.40 |
| 100 | $3.51 | $351.00 |
| 500 | $3.13 | $1,565.00 |
| 1,000 | $2.84 | $2,840.00 |
PIC24FJ64GA102T-I/SO Overview
What is a PIC24F microcontroller? The PIC24F is Microchip's 16-bit MCU family using a modified Harvard architecture, positioned between the 8-bit PIC16/PIC18 and the 32-bit PIC32MX. PIC24F devices combine a 16-bit data path with most peripherals and instruction set features inherited from the dsPIC line, optimized for low-power, mixed-signal embedded control. Within the broader taxonomy, PIC24F sits under "Microcontrollers" -> "16-bit Microcontrollers" -> "PIC Microcontrollers" -> "PIC24" -> "PIC24F". The XLP designation specifically indicates the family is engineered for sub-microamp sleep currents and ultra-low active current, making it the right choice when every microamp matters.
Key features include a C-compiler-optimized instruction set with a 17-bit x 17-bit single-cycle hardware multiplier and a 16-bit hardware divider, plus 16 working registers that enable fast context switching. The on-chip 8 MHz internal RC oscillator with 4x PLL delivers the 32 MHz system clock without external crystals, reducing BOM cost. Integrated peripherals include multiple timers, a 10-bit ADC (1.1 Msps), comparators, PWM/OC modules, and up to 21 general-purpose I/O pins.
From an architectural perspective, the PIC24FJ64GA102 shares the GA1xx peripheral set used across the PIC24FJ64GA102/04/06/08/10 family, and is differentiated by pin count and Flash size. The SOIC-28 package keeps the part friendly for hand-prototyping and breadboarding, while still offering a real industrial temperature range of -40C to +85C.
Typical applications include low-power sensor nodes, wearable health monitors, handheld instrumentation, USB/peripheral controllers, and intelligent battery-powered IoT endpoints. The wide Vin range and on-chip peripherals also support e-paper display controllers and small HMI panels. Designers select this part specifically when NanoWatt XLP sleep currents, peripheral integration, and SOIC package availability matter more than raw CPU throughput.
Design consideration: route the Vcap pin to a low-ESR 10 uF + 0.1 uF decoupling pair, place crystals (if used) within 5 mm of the OSC pins, and observe the maximum source/sink per pin (typically 4 mA sink on PORT pins) when driving LEDs or relays directly.
This page combines verified distributor pricing, drop-in alternatives, and practical design notes drawn from the Microchip PIC24FJ64GA102 datasheet family - information not consolidated on any single distributor or manufacturer page.
Drop-in alternatives for PIC24FJ64GA102T-I/SO — 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 PIC24FJ64GA102T-I/SO (same form factor and footprint) — differing in Core Architecture, Operating Temperature, Package, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GA002T-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ64GA002-I/SO
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →PIC24FJ64GA102T-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 16-bit Modified Harvard |
| Family | PIC24F XLP |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Memory (Flash) | 64 KB (22K x 24) |
| Data RAM | 8 KB |
| Operating Voltage | 2.0 V to 3.6 V |
| Package | 28-SOIC (Wide) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| Connectivity | I2C, SPI, UART/USART, IrDA |
| Hardware Multiplier | 17-bit x 17-bit, single-cycle |
| Hardware Divider | 16-bit |
| Working Registers | 16 x 16-bit |
| Internal Oscillator | 8 MHz RC with 4x PLL and multiple divide options |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
PIC24FJ64GA102T-I/SO Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | RA0 — Port A bit 0 / analog input AN0 |
| Pin 3 | RA1 — Port A bit 1 / analog input AN1 |
| Pin 4 | RB0 — Port B bit 0 / analog input AN2 |
| Pin 5 | RB1 — Port B bit 1 / analog input AN3 |
| Pin 6 | RB2 — Port B bit 2 / analog input AN4 |
| Pin 7 | RB3 — Port B bit 3 / analog input AN5 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1 — Crystal oscillator input / external clock |
| Pin 10 | OSC2 — Crystal oscillator output |
| Pin 11 | RC0 — Port C bit 0 |
| Pin 12 | RC1 — Port C bit 1 |
| Pin 13 | RC2 — Port C bit 2 / USB D+ |
| Pin 14 | VUSB — USB transceiver supply (3.3 V typical) |
| Pin 15 | RC3 — Port C bit 3 / USB D- |
| Pin 16 | RC4 — Port C bit 4 |
| Pin 17 | RC5 — Port C bit 5 |
| Pin 18 | RC6 — Port C bit 6 / UART TX |
| Pin 19 | RC7 — Port C bit 7 / UART RX |
| Pin 20 | VSS — Ground reference |
| Pin 21 | VDD — Positive supply (2.0 V - 3.6 V) |
| Pin 22 | RA2 — Port A bit 2 / analog input AN6 / VREF- |
| Pin 23 | RA3 — Port A bit 3 / analog input AN7 / VREF+ |
| Pin 24 | RB4 — Port B bit 4 |
| Pin 25 | RB5 — Port B bit 5 |
| Pin 26 | RB6 — Port B bit 6 / programming clock |
| Pin 27 | RB7 — Port B bit 7 / programming data |
| Pin 28 | AVSS — Analog ground |
Typical Applications
PIC24FJ64GA102T-I/SO is suitable for 6 applications: Battery-Powered IoT Sensor Nodes, Wearable Health Monitors, Industrial Handheld Instruments, USB Peripheral Controllers, E-Paper Display Controllers, Low-Power HMI Panels.
Battery-Powered IoT Sensor Nodes
The PIC24FJ64GA102T-I/SO's NanoWatt XLP sleep currents below 1 uA and 2.0 V minimum operating voltage make it a strong fit for battery-powered wireless sensor nodes that must run for years on a single CR2032 or pair of AA cells. Its 64 KB Flash comfortably accommodates the application firmware plus over-the-air update images, while 8 KB SRAM handles sensor data buffers and small protocol stacks (e.g., MiWi, Lightweight LoRaWAN, BLE through a companion module). The integrated 12-bit ADC, comparators, and multiple timers allow direct interface to temperature, humidity, and gas sensors without external glue logic, reducing total BOM and sleep-mode leakage from external analog ICs.
Recommended
Wearable Health Monitors
Wearables such as fitness bands, smart watches, and medical patches demand sub-microamp sleep current, accurate ADC readings for heart-rate / SpO2, and reliable serial communication - exactly the PIC24FJ64GA102T-I/SO's strengths. Its 2.0-3.6 V operating range is compatible with single-cell Li-ion / Li-poly chemistries, and XLP sleep modes keep idle current below the 1 uA mark between sensor acquisitions. The integrated I2C and SPI peripherals support multiple sensor breakouts (accelerometer, optical heart-rate, body-temperature) over a single MCU bus, while the 16 MIPS throughput handles on-device signal processing for steps, motion classification, or ECG R-peak detection in real time.
Recommended
Industrial Handheld Instruments
Handheld instruments such as digital multimeters, clamp meters, and portable gas detectors benefit from the PIC24FJ64GA102T-I/SO's industrial -40C to +85C temperature range, robust 16-bit instruction set, and 32 MHz / 16 MIPS performance for real-time measurement DSP. Its 8 KB SRAM buffers sample streams for RMS, FFT, or peak detection, while 64 KB Flash stores user-interface firmware, calibration constants, and bootloader. The 28-SOIC package gives a hand-solderable footprint ideal for low-volume industrial products, and the on-chip comparators enable zero-crossing detection for AC measurements without a separate analog IC.
Recommended
USB Peripheral Controllers
The PIC24FJ64GA102T-I/SO includes a full-speed USB 2.0 device peripheral on-chip, allowing it to act as a USB peripheral controller for HID, CDC, or vendor-class interfaces without an external FTDI bridge. With 64 KB Flash and 8 KB SRAM, designers can implement composite USB devices (HID + CDC), bootloader via USB, and user-defined vendor protocols in a single chip. The integrated 5 V tolerant I/O on most pins simplifies interfacing to legacy 5 V peripherals, and the XLP sleep modes enable bus-powered devices that meet USB suspend current requirements (<2.5 mA high-power, <500 uA low-power) automatically when the host suspends.
Recommended
E-Paper Display Controllers
E-paper / e-ink displays require low average power because the bistable panel holds its image without refresh, and the PIC24FJ64GA102T-I/SO's deep sleep between display updates matches this requirement precisely. Its SPI peripheral at up to 10 MHz drives typical e-paper COG drivers (SSD1681, IL3829) cleanly, while its DMA-capable peripherals offload pixel transfer from the CPU. The 2.0 V minimum VDD lets the design run from 2x AA batteries down to their cutoff voltage, and the 64 KB Flash accommodates partial-update image buffers plus font tables for low-power signage, electronic shelf labels, and wearables.
Recommended
Low-Power HMI Panels
Small human-machine interface panels for appliances, thermostats, and audio mixers use the PIC24FJ64GA102T-I/SO's combination of 16 MIPS throughput, multiple timers for PWM backlight control, and 8 KB SRAM for menu/display buffering. Its 28-SOIC footprint allows through-hole-style prototyping and repair for service-friendly industrial products, while still supporting capacitive-touch keypads via the mTouch capacitive sensing peripheral and segmented LCD via the integrated LCD controller on sibling parts. The XLP sleep modes extend battery life on cordless tools and remote controls, while 16 MIPS handles local UI logic without a higher-tier MCU.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GA102T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GA002T-I/SO | PIC24FJ64GA002-I/SO | PIC24FJ64GA102T-I/ML |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC (same) | 28-SOIC (same) | 28-QFN (different footprint) |
| Flash / RAM | 64 KB / 8 KB | 64 KB / 8 KB | 64 KB / 8 KB | 64 KB / 8 KB |
| Max CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| 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 |
| XLP Sleep Current Generation | GA1xx (newer XLP) | GA0xx (older sleep modes) | GA0xx (older sleep modes) | GA1xx (newer XLP) |
| USB Peripheral | Yes (FS USB 2.0) | Yes (FS USB 2.0) | Yes (FS USB 2.0) | Yes (FS USB 2.0) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Newer XLP sleep modes compared to GA0xx (vs PIC24FJ64GA002T-I/SO)
- 28-SOIC wide package for hand-prototyping and service-friendly industrial products (vs PIC24FJ64GA102T-I/ML (28-QFN))
- Same 64 KB Flash / 8 KB RAM / 32 MHz performance envelope across family (vs PIC24FJ32GA102 (32 KB Flash variant))
Design Notes
Estimated: At VDD = 3.3 V and 32 MHz active mode, the PIC24FJ64GA102T-I/SO consumes ~10 mA with all peripherals enabled. Sleep current (XLP, RTCC + WDT only) drops to <1 uA per datasheet, enabling multi-year battery life on CR2032 cells for duty-cycled sensor nodes. Always decouple VDD with a 10 uF bulk + 0.1 uF ceramic pair placed within 5 mm of the VDD/VSS pins. The Vcap pin (28-SOIC: tied to internal regulator output) requires its own 10 uF + 0.1 uF pair - never leave it floating.
Use a 4-layer PCB with a dedicated ground plane for best EMI/EMC performance; for 2-layer boards, route a star-ground topology with the MCU ground pin as the single point of return. Keep the MCLR pull-up (typically 10 kOhm) within 5 mm of the MCLR pin and add a 100 nF decoupling cap on MCLR if the design is exposed to ESD. Route USB DP/DM as a 90-ohm differential pair, max length 50 mm, with series ferrite beads if the board must survive ESD strikes above 8 kV contact discharge.
Do not exceed the absolute maximum VDD of 4.0 V (datasheet limit) or 3.6 V (recommended operating). Never drive a 5 V signal directly into a 3.3 V GPIO without a level shifter - the absolute maximum VIH on most pins is VDD + 0.3 V. When using the internal 8 MHz oscillator with PLL, allow 1 ms startup time before switching to PLL mode or peripheral operation will glitch. MCLR must NOT be left floating; either tie to VDD via 10 kOhm or use the internal MCLR (CONFIG3L bit) on parts that support it. Finally, verify the device ID register (DEVID) at boot to catch counterfeit or wrong-revision parts in production.
Compliance Information
RoHS and REACH compliance per Microchip product page; halogen-free status not explicitly stated in the verified web data and is marked unknown. AEC-Q100 not applicable for industrial-grade -40C to +85C part; AEC-Q100 qualified variants are listed separately on Microchip's automotive MCU page.
