PIC24FJ64GA002-E/SP - 16-bit MCU 64KB Flash 28-SPDIP | Microchip
MPN: PIC24FJ64GA002-E/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.1 | $6.10 |
| 10 | $5.55 | $55.50 |
| 100 | $4.85 | $485.00 |
| 500 | $4.3 | $2,150.00 |
| 1,000 | $3.92 | $3,920.00 |
PIC24FJ64GA002-E/SP Overview
A microcontroller (MCU) is an integrated circuit that combines a CPU, memory, and programmable I/O peripherals on a single die, allowing embedded systems to perform sensing, control, and communication tasks without external logic. The PIC24F sits in the hierarchy of microcontrollers -> 16-bit MCU -> RISC microcontroller -> embedded processor -> semiconductor, providing more computational headroom than 8-bit PIC18 devices while consuming less power than 32-bit PIC32 parts.
Key features include 64 KB Flash (22K x 24 words), 8 KB SRAM, integrated 16-channel 10-bit ADC, four 16-bit timers, two UART, two SPI, two I2C peripherals, a Real-Time Clock/Calendar (RTCC) with calendar mode, and a Charge Time Measurement Unit (CTMU) for capacitive touch sensing. It also offers five PWM/Output Compare modules, a Parallel Master Port (PMP), and a 4-wire programming/debug interface (ICSP) that supports Microchip's MPLAB X IDE and PICkit programmers.
The device uses Microchip's modified Harvard architecture with a 16-bit wide data path and 24-bit instruction word, giving it strong C-compiler efficiency through the MPLAB XC16 toolchain. Internal RC oscillators and a 32 kHz secondary oscillator reduce external component count, while the nanoWatt XLP features bring sleep currents down to roughly 20 nA in Deep Sleep mode, enabling multi-year battery life in periodic-sampling sensor nodes.
Typical applications include industrial sensor hubs, handheld instrumentation, USB/HID peripherals, building automation, low-power wireless sensor nodes, motor control front-ends, and consumer white goods where the 28-SPDIP package simplifies hand-soldered prototypes and field-replaceable modules.
When designing with this part, budget for decoupling (100 nF on each VDD/AVDD pair plus a bulk 10 uF), keep analog and digital grounds separated until they join at the MCU, and remember that the PIC24FJ64GA002-E/SP is the Extended (E) temperature grade -40C to +125C, so the -I variant is preferred for benign consumer-only environments.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the bare manufacturer datasheet, supporting engineers making sourcing and second-source decisions.
Drop-in alternatives for PIC24FJ64GA002-E/SP — 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-E/SP (same form factor and footprint) — differing in ADC, Package, Operating Temperature, Timers, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GA002-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ64GA002-E/SO
✅ Drop-In✓ In Stock
$3.81 / Unit
View Datasheet →PIC24FJ64GA002-I/ML
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$2.45 / Unit
View Datasheet →PIC24FJ64GA002T-I/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ64GA002T-E/SO
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ64GA004-E/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ64GA002-E/SP Maximum Ratings & Electrical Characteristics
| Core | PIC24F (16-bit RISC, modified Harvard) |
| CPU Speed | 32 MHz / 16 MIPS |
| Program Flash Memory | 64 KB (22K x 24 words) |
| RAM | 8 KB |
| Operating Voltage | 2.0 V to 3.6 V |
| Package | 28-pin SPDIP (Skinny DIP, 7.62 mm / 0.300 in row spacing) |
| I/O Pins | 21 |
| ADC | 10-bit, up to 10 channels |
| Timers | Five 16-bit timers |
| Communication | 2x UART, 2x SPI, 2x I2C |
| PWM / Output Compare | 5 channels |
| RTCC | Yes (Real-Time Clock/Calendar) |
| CTMU | Yes (Charge Time Measurement Unit, for capacitive touch) |
| Operating Temperature | -40 C to +125 C (Extended grade) |
| RoHS Status | Compliant |
| Programming/Debug | ICSP (4-wire) / JTAG boundary scan |
PIC24FJ64GA002-E/SP Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active low |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog input 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog input 1 |
| Pin 4 | VSS — Ground reference |
| Pin 5 | RA2/AN2 — PORTA bit 2 / analog input 2 |
| Pin 6 | RA3/AN3 — PORTA bit 3 / analog input 3 |
| Pin 7 | RA4 — PORTA bit 4 (open-drain capable) |
| Pin 8 | RA5/AN4 — PORTA bit 5 / analog input 4 |
| Pin 9 | VDD — Positive supply (2.0V to 3.6V) |
| Pin 10 | RA6/OSC2 — PORTA bit 6 / secondary oscillator output |
| Pin 11 | RA7/OSC1 — PORTA bit 7 / primary oscillator input |
| Pin 12 | RB0/PGED3 — PORTB bit 0 / ICSP data |
| Pin 13 | RB1/PGEC3 — PORTB bit 1 / ICSP clock |
| Pin 14 | RB2 — PORTB bit 2 |
| Pin 15 | RB3 — PORTB bit 3 |
| Pin 16 | RB4/SDA2 — PORTB bit 4 / I2C2 data |
| Pin 17 | RB5/SCL2 — PORTB bit 5 / I2C2 clock |
| Pin 18 | RB6/PGEC1 — PORTB bit 6 / ICSP clock primary |
| Pin 19 | RB7/PGED1 — PORTB bit 7 / ICSP data primary |
| Pin 20 | VSS — Ground reference |
| Pin 21 | RC0 — PORTC bit 0 |
| Pin 22 | RC1 — PORTC bit 1 |
| Pin 23 | RC2 — PORTC bit 2 |
| Pin 24 | RC3 — PORTC bit 3 |
| Pin 25 | RC4 — PORTC bit 4 |
| Pin 26 | RC5 — PORTC bit 5 |
| Pin 27 | RC6 — PORTC bit 6 |
| Pin 28 | RC7 — PORTC bit 7 |
Typical Applications
PIC24FJ64GA002-E/SP is suitable for 6 applications: Industrial Sensor Hub, Handheld Test Instrument, Low-Power Wireless Sensor Node, Building Automation Controller, USB HID Peripheral (via External Bridge), Capacitive Touch Control Panel.
Industrial Sensor Hub
The PIC24FJ64GA002-E/SP is well matched to multi-channel industrial sensor hubs where 64 KB of Flash and 8 KB of RAM run a Modbus RTU slave, schedule periodic ADC scans, and store calibration tables. Its 10-bit ADC with up to 10 analog inputs covers thermocouple-amplifier outputs, 4-20 mA loop receivers, and bridge sensors simultaneously. The nanoWatt XLP deep-sleep current near 20 nA lets a battery-backed hub survive months between service intervals, while two UARTs handle RS-485 plus debug logging. The 28-SPDIP through-hole package simplifies hand-soldered field-replaceable modules in junction boxes.
Recommended
Handheld Test Instrument
A handheld DMM or process calibrator benefits from the PIC24FJ64GA002-E/SP's 32 MHz / 16 MIPS throughput to drive a 128x64 graphical LCD over SPI, debounce a 4x4 keypad, and run autoranging algorithms without lag. The integrated RTCC timestamps logged measurements with year/month/day accuracy. With 8 KB of RAM, the device buffers hundreds of samples before flushing to external EEPROM over I2C. Its 28-SPDIP package is easy to assemble in low-volume, while the Extended -40 C to +125 C grade ensures accurate readings in field cabinets from cold mornings to hot rooftops.
Recommended
Low-Power Wireless Sensor Node
In a battery-powered wireless sensor node, the PIC24FJ64GA002-E/SP spends most of its life in nanoWatt XLP Deep Sleep at approximately 20 nA, waking periodically to take an ADC reading and transmit via an attached sub-1 GHz or 2.4 GHz transceiver. The integrated CTMU peripheral provides capacitive touch wake-up without external ASICs, enabling door/window contact and water-leak detectors that last 5+ years on a CR2032. The 64 KB Flash hosts a small Contiki-like MAC plus over-the-air firmware update loader, while two UARTs and two SPI ports connect to radios and sensors in parallel. The 28-SPDIP footprint keeps prototype rework trivial.
Recommended
Building Automation Controller
The PIC24FJ64GA002-E/SP serves as a room or floor controller in building automation, executing BACnet MS-TP or LonTalk schedules, driving TRIAC outputs for lighting, and reading 0-10 V dimmer inputs. Five PWM/Output Compare channels directly control LED drivers and small DC fans, while 21 I/O pins cover buttons, status LEDs, and a rotary encoder. The 2.0-3.6 V supply aligns with 24 V bus regulators that step down to 3.3 V for the MCU. Extended -40 C to +125 C operation handles unheated electrical closets, and the 28-SPDIP package suits long-life industrial controllers where field replacement is expected.
Recommended
USB HID Peripheral (via External Bridge)
Although the PIC24FJ64GA002-E/SP has no native USB, it can implement a USB HID peripheral by pairing with an MCP2200 or MCP2221 USB-UART/I2C bridge IC. The MCU's two UARTs and two I2C buses let it act as the application processor while the bridge handles USB enumeration and HID reports, keeping firmware simple. With 64 KB Flash and 8 KB RAM, the MCU can store user configuration, debounce matrix keypads, and drive status LEDs. The Extended temperature grade supports ruggedized industrial input devices, and the 28-SPDIP package simplifies through-hole assembly in low-volume products.
Recommended
Capacitive Touch Control Panel
The PIC24FJ64GA002-E/SP integrates Microchip's CTMU peripheral, which measures capacitance charge time to detect touch on up to 16 buttons or a small slider without external touch ASICs. Combined with the 32 MHz CPU core, it debounces, applies hysteresis, and drives PWM-controlled LED backlighting in real time. The 8 KB RAM comfortably supports an RTCC for schedule-based lighting plus a UART for DMX-512 or DALI bridge communication. The Extended -40 C to +125 C temperature range supports kitchen appliances and outdoor kiosks, while the 28-SPDIP package is friendly to low-volume appliance runs.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GA002-E/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GA002-I/SP | PIC24FJ64GA002-E/SO | PIC24FJ64GA004-E/SP |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SPDIP | 28-SPDIP (same) | 28-SOIC wide body (requires land-pattern swap) | 28-SPDIP (same, plus 44-pin upgrade path) |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB |
| CPU Speed | 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 |
| Temperature Range | -40 C to +125 C (Extended) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | -40 C to +125 C (Extended) |
| USB Peripheral | No | No | No | No |
| Approx Unit Price (1 pc) | ~$6.10 | ~$5.85 | ~$5.95 | ~$6.20 |
Key Differentiators
- Extended -40 C to +125 C operating range over the standard -I variant (vs PIC24FJ64GA002-I/SP)
- Through-hole 28-SPDIP package for hand-soldered prototypes (vs PIC24FJ64GA002-E/ML (QFN-28))
- nanoWatt XLP deep-sleep current near 20 nA typical (vs PIC24FJ64GA004-E/SP)
Design Notes
Place a 100 nF ceramic decoupling capacitor within 5 mm of every VDD/VSS pair on the PIC24FJ64GA002-E/SP, plus a shared 10 uF bulk capacitor near pin 9. For ADC accuracy, power AVDD through a ferrite bead from VDD and decouple AVSS directly to VSS at the IC. The MCU draws roughly 1 mA per MIPS at 3.3 V; at full 16 MIPS this is about 16 mA plus peripheral current. Budget quiescent carefully - even small leak paths on unused I/O pins can defeat nanoWatt XLP Deep Sleep, so set unused pins to digital outputs low or inputs with internal pull-downs.
The PIC24FJ64GA002-E/SP is specified from -40 C to +125 C junction, but Extended-grade testing adds design margin above standard industrial ratings. The 28-SPDIP package has a theta_JA of approximately 60 C/W in still air, rising at higher altitudes or sealed enclosures. For continuous 32 MHz operation in a sealed industrial enclosure at 60 C ambient, verify with a thermocouple on pin 1 (MCLR) that the die temperature stays below 110 C. If the design is borderline, downgrade to 16 MIPS or use the 44-pin TQFP variant of GA004 for better thermal spreading.
Keep the 32 kHz secondary oscillator crystal traces short (<5 mm) and symmetric to minimize duty-cycle distortion on the RTCC. Place the ICSP programming header (PGED1/PGEC1 on RB6/RB7) on a 0.1 inch-pitch 5-pin header that is accessible without removing the enclosure. Route the MCLR line with a 10 kohm pull-up to VDD and a 100 nF cap to ground for clean resets. If the PCB also carries an external 32.768 kHz crystal, leave guard traces grounded around it to attenuate coupled noise from nearby DC-DC converters.
Common pitfalls with the PIC24FJ64GA002-E/SP include: (1) forgetting that the ADC reference voltage defaults to AVDD/AVSS rather than an internal 1.2V bandgap, which can introduce noise on noisy rails; (2) configuring the CTMU for capacitive touch but omitting the calibration sequence from mTouch; (3) using the analog-capable pins RA0-RA5 with internal pull-ups enabled, which corrupts ADC readings; (4) enabling the on-chip voltage regulator (DISVREG pin) incorrectly during prototyping, causing brownouts; and (5) treating the device as 5V tolerant - the absolute maximum on any I/O is VDD + 0.3V, so level-shift any 5V signal with a resistor divider or external translator.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified (PIC24FJ64GA002 is general-purpose industrial, not automotive-grade); for automotive designs choose PIC24FJ64GA002-E/SP only if the design falls outside AEC-Q100 scope, otherwise pick a Q100-qualified alternative. Halogen-free per Microchip packaging spec.
