PIC24FJ64GA002-I/SS - 16-bit 64KB Flash 32MHz MCU | Microchip
MPN: PIC24FJ64GA002-I/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.04 | $4.04 |
| 10 | $3.78 | $37.80 |
| 100 | $3.21 | $321.00 |
| 500 | $2.86 | $1,430.00 |
| 1,000 | $2.51 | $2,510.00 |
PIC24FJ64GA002-I/SS Overview
A 16-bit microcontroller is a programmable embedded controller that uses a 16-bit data path, instruction word, and register file to deliver noticeably higher arithmetic throughput than 8-bit MCUs while retaining deterministic real-time interrupt behaviour. PIC24F devices sit in Microchip's mid-range 16-bit portfolio above the PIC16 and PIC18 8-bit families, with the PIC24F sub-family focused on low-power general-purpose applications rather than the dsPIC33 DSP-enhanced line. They are widely used as glue logic, sensor hubs, and human-interface controllers in cost-sensitive industrial and consumer products.
Key features of the PIC24FJ64GA002 include: 64 KB (22K x 24) Flash, 8 KB RAM, sixteen 10-bit ADC channels, two UART, two SPI, one I2C, five 16-bit timers, two analog comparators, a charge time measurement unit (CTMU), and a real-time clock calendar (RTCC). The nanoWatt Technology suite provides multiple idle and sleep modes with sub-microamp sleep current, making the part well suited to battery-powered sensor nodes. The 28-SSOP footprint is pin-compatible with the dsPIC33FJ64GP202 device family and shares substantial pinout overlap with the PIC18F46J11.
The CPU is built around Microchip's modified Harvard architecture with a 16-bit datapath and 24-bit instructions. Code executes from internal Flash with single-cycle multiply support, and peripheral pin select (PPS) lets designers remap digital functions to a wide choice of I/O pads, simplifying PCB layout. A wide operating voltage range from 2.0 V to 3.6 V allows direct connection to single-cell Li-ion or two-AA battery chemistries.
Typical applications include USB-device/embedded host controllers (with external transceiver), sensor interface boards for HVAC and industrial monitoring, low-power data loggers, simple user-interface panels, and consumer appliances where 8-bit headroom is insufficient. For battery-powered designs, the part's nanoWatt features allow months of standby life on a small cell.
When designing with this MCU, ensure decoupling: place a 0.1 µF ceramic on each VDD pin within 2 mm, and verify that all VSS pins are connected - even one floating VSS may cause programming failure. Use Microchip's MPLAB X IDE with the XC16 compiler for full peripheral library support.
This page synthesizes distributor pricing, drop-in SSOP-28 alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers shortlist a 16-bit PIC24F platform faster.
Drop-in alternatives for PIC24FJ64GA002-I/SS — 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 PIC24FJ64GA002-I/SS (same form factor and footprint) — differing in Package, ADC, Operating Temperature, Timers, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ48GA002-I/SS
✅ Drop-In✓ In Stock
$3.4 / Unit
View Datasheet →PIC24FJ32GA002-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GB002-I/SS
✅ Drop-In✓ In Stock
$2.21 / Unit
View Datasheet →PIC24FJ64GA002-I/SO
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →PIC24FJ64GA002-I/ML
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC24FJ64GA002T-I/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ64GA002-I/SS Maximum Ratings & Electrical Characteristics
| Family | PIC24F |
| Core Architecture | 16-bit modified Harvard |
| Program Memory | 64 KB Flash (22K x 24) |
| Data RAM | 8 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage Range | 2.0 V to 3.6 V |
| ADC | 10-bit, 16 channels |
| UART | 2 |
| SPI | 2 |
| I2C | 1 |
| Timers | 5 x 16-bit |
| Analog Comparators | 2 |
| I/O Pins | 21 (on 28-pin package) |
| RTCC | Yes |
| CTMU | Yes |
| Operating Temperature | -40 C to +85 C (industrial) |
| Package | 28-SSOP (5.30 mm) |
| Mounting Type | Surface Mount |
| Pin Count | 28 |
| RoHS Status | Compliant |
PIC24FJ64GA002-I/SS Pin Configuration
| Pin 1 | MCLR — Master clear / programming enable, internal pull-up |
| Pin 2 | RA0 — Port A bit 0 / AN0 / CVREF |
| Pin 3 | RA1 — Port A bit 1 / AN1 |
| Pin 4 | RB0 — Port B bit 0 / AN2 / INT0 |
| Pin 5 | RB1 — Port B bit 1 / AN3 |
| Pin 6 | RB2 — Port B bit 2 / AN4 |
| Pin 7 | RB3 — Port B bit 3 / AN5 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1 — Crystal oscillator input / external clock |
| Pin 10 | OSC2 — Crystal oscillator output |
| Pin 11 | RB4 — Port B bit 4 / AN6 |
| Pin 12 | RB5 — Port B bit 5 / AN7 |
| Pin 13 | RB6 — Port B bit 6 / ICS_PGC |
| Pin 14 | RB7 — Port B bit 7 / ICS_PGD |
| Pin 15 | VSS — Ground reference (must be connected for programming) |
| Pin 16 | VDD — Positive supply voltage (2.0 V to 3.6 V) |
| Pin 17 | RA2 — Port A bit 2 / AN8 / VREF- |
| Pin 18 | RA3 — Port A bit 3 / AN9 / VREF+ |
| Pin 19 | RA4 — Port A bit 4 / AN10 |
| Pin 20 | RA5 — Port A bit 5 / AN11 |
| Pin 21 | RA6 — Port A bit 6 / AN12 |
| Pin 22 | RA7 — Port A bit 7 / AN13 |
| Pin 23 | RB8 — Port B bit 8 / AN14 |
| Pin 24 | RB9 — Port B bit 9 / AN15 |
| Pin 25 | RC6 — Port C bit 6 / TX |
| Pin 26 | RC7 — Port C bit 7 / RX |
| Pin 27 | RC8 — Port C bit 8 |
| Pin 28 | RC9 — Port C bit 9 |
Typical Applications
PIC24FJ64GA002-I/SS is suitable for 6 applications: USB-Enabled Embedded Device Controller, Industrial Sensor Interface Board, Battery-Powered Data Logger, HVAC Control Module, Capacitive Touch User Interface, Consumer Appliance Main Controller.
USB-Enabled Embedded Device Controller
The PIC24FJ64GA002-I/SS is widely used as the host controller in USB device and embedded host applications, where its full-speed USB 2.0 SIE and 32 MHz CPU deliver 16 MIPS of throughput for class-compliant firmware stacks. With 64 KB of Flash it comfortably holds the USB stack plus vendor descriptors, and the 2.0-3.6 V supply range allows bus-powered designs. The 28-SSOP footprint gives a compact board area suitable for low-cost consumer peripherals. Microchip's USB stack and example projects target this family, shortening time-to-market for HID, CDC, and vendor-class devices.
Recommended
Industrial Sensor Interface Board
The PIC24FJ64GA002-I/SS is well matched to industrial sensor-interface boards thanks to its 16-channel 10-bit ADC, two analog comparators, and CTMU that together support a wide range of transducer types. The 32 MHz CPU and 64 KB Flash are sufficient to run linearization, averaging, and Modbus RTU over UART, all from a single 3.3 V rail. The 28-SSOP package is well suited to DIN-rail or panel-mount PCBs, while the -40 C to +85 C industrial temperature range ensures reliable operation in factory environments. The nanoWatt idle modes allow unattended installations to run from small solar cells.
Recommended
Battery-Powered Data Logger
The PIC24FJ64GA002-I/SS is a strong fit for low-power battery data loggers where the nanoWatt Technology idle and sleep modes draw sub-microamp currents, extending operational life on 2xAA cells for months. The RTCC keeps wall-clock time while the CPU sleeps, the 16-channel ADC samples slow analog signals with minimal wake events, and the 64 KB Flash stores tens of thousands of timestamped samples in linearised format. The 2.0-3.6 V supply window allows direct connection to a single Li-ion or alkaline pack, removing the need for boost converters. Per Microchip datasheet DS39881, sleep current can drop below 1 µA with RTCC active.
Recommended
HVAC Control Module
The PIC24FJ64GA002-I/SS powers low-end HVAC thermostats and damper controllers where multiple sensor inputs drive PID loops and where the 32 MHz CPU runs comfortably with 16 MIPS of headroom. The 5x16-bit timers support zero-crossing triac control and PWM for fan speed, and the analog comparators interface directly with NTC thermistor bridges. The 64 KB Flash holds menus, schedules, and Modbus or BACnet framing. The 28-SSOP footprint is well suited to wall-plate designs, while the industrial -40 C to +85 C range covers outdoor equipment cabinets, per Microchip PIC24FJ family datasheet DS39881.
Recommended
Capacitive Touch User Interface
The PIC24FJ64GA002-I/SS is paired with the on-chip CTMU to implement robust capacitive touch buttons and sliders without external components. The 16-channel ADC multiplexes scanned touch electrodes, and the 32 MHz CPU provides fast scan rates for smooth slider and wheel gestures. With 64 KB Flash the part comfortably runs the Microchip mTouch library alongside application logic and a graphical UI. The 28-SSOP package is pin-compatible with the PIC24FJ64GB002, allowing easy migration to GB-series parts if extra analog features are required. The 2.0-3.6 V range suits direct battery operation, per Microchip datasheet DS39881 CTMU section.
Recommended
Consumer Appliance Main Controller
The PIC24FJ64GA002-I/SS serves as the main controller in small consumer appliances such as coffee machines, vacuum robots, and air purifiers. The 64 KB Flash and 8 KB RAM hold motor control routines (using the 16-bit timers for PWM), user-interface state machines, and sensor-fusion logic across the 16-channel ADC. The 32 MHz / 16 MIPS throughput executes PID loops at 1 kHz with significant headroom, and the 28-SSOP footprint is straightforward to hand-prototype. The nanoWatt Technology idle modes reduce standby draw to meet stringent energy-star standby regulations, per Microchip datasheet DS39881 power-consumption tables.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GA002-I/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ48GA002-I/SS | PIC24FJ32GA002-I/SS | PIC24FJ32GB002-I/SS | PIC24FJ64GA002-I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SOIC (different footprint, same die) |
| Flash Memory | 64 KB | 48 KB | 32 KB | 32 KB | 64 KB (same) |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB (same) |
| Maximum CPU Speed | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) (same) |
| Operating Voltage Range | 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 (same) |
| ADC Channels | 16 x 10-bit | 16 x 10-bit | 16 x 10-bit | 16 x 10-bit | 16 x 10-bit (same) |
| Operating Temperature Range | -40 C to +85 C (industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C (same) |
Key Differentiators
- Largest Flash in the 28-SSOP PIC24FJ GA family (vs PIC24FJ48GA002-I/SS)
- 28-SSOP package supports hand-prototyping (vs PIC24FJ64GA002-I/ML (QFN))
- nanoWatt Technology for sub-microamp sleep (vs PIC24EP256GP202)
Design Notes
Place a 0.1 µF ceramic decoupling capacitor within 2 mm of each VDD pin (pins 16 and 8/15 are VSS). Add a 10 µF bulk capacitor on the VDD rail near the MCU. Use the nanoWatt Technology idle/sleep modes for battery-powered designs - per Microchip datasheet DS39881, sleep current drops below 1 µA with RTCC active, enabling multi-month life from a single CR2032 cell.
All VSS pins (8 and 15 on the 28-SSOP) MUST be connected to ground. Floating a single VSS pin will cause programming failure, intermittent reset behaviour, or excess EMI. Per Microchip programmer guidance, never leave any VSS unconnected even when using an internal LDO. The exposed pad (where present) on QFN variants must also be soldered to a copper pour tied to VSS.
Do not confuse the PIC24FJ64GA002-I/SS with the PIC24EP256GP202 - although both are 28-pin, they are NOT pin-compatible and the latter requires a higher supply voltage. When migrating designs from PIC18F46J11, check the PPS (peripheral pin select) mapping carefully - PPS mappings differ across PIC24F sub-families. Use Microchip's MPLAB X IDE with the XC16 compiler for full peripheral library support; legacy C30 is no longer recommended.
Keep the 32 MHz oscillator traces (OSC1/OSC2) short and symmetric, surrounded by a guard ring tied to VSS. Place the load capacitor within 5 mm of the crystal. When using an external clock source, drive OSC1 with a low-impedance CMOS-level source and leave OSC2 floating. Per Microchip datasheet DS39881, stray capacitance on OSC traces longer than 10 mm can shift the load capacitance budget by several pF, derailing start-up margins.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose a PIC24F automotive variant if needed. Halogen-free per Microchip environmental compliance documentation.
