PIC24FJ64GA102-I/SP - 16-bit 32MHz 64KB Flash MCU | Microchip
MPN: PIC24FJ64GA102-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.35 | $335.00 |
| 500 | $3 | $1,500.00 |
| 1,000 | $2.66 | $2,660.00 |
PIC24FJ64GA102-I/SP Overview
A 16-bit microcontroller (MCU) is an embedded computing device that uses a 16-bit data path, registers, and ALU to balance arithmetic throughput and code density versus 8-bit and 32-bit cores. In the broader taxonomy, this PIC24F device sits within the PIC microcontroller family (Microchip proprietary architecture) -> 16-bit MCU -> embedded microcontroller -> semiconductor IC. Its eXtreme Low Power (XLP) lineage adds deep sleep currents below 1 uA, peripheral power gating, and multiple low-power operating modes that target battery-powered edge devices.
Key features include 21 digital I/O pins, two UART/SPI/I2C configurable serial interfaces, a 10-bit 1.1 Msps ADC with up to 10 channels, five 16-bit timers, a 16-bit PWM with multiple modes, and an on-chip 32kHz low-power oscillator. The 64KB self-programmable Flash supports ICSP (In-Circuit Serial Programming) and an on-chip charge time measurement unit (CTMU) for capacitive touch and basic sensor front-ends. RTCC (Real-Time Clock and Calendar) hardware is integrated for timekeeping.
The architecture uses a modified Harvard structure with separate program and data buses, a 16 x 16-bit register file, hardware multiplier/divider, and a deterministic instruction set that runs at 32MHz with 16 MIPS throughput. Internal oscillator options and on-chip PLLs enable flexible clocking while the nanoWatt XLP technology provides sleep modes below 1 uA. Hardware-level code protection and a unique 64-bit device ID support firmware IP security.
Typical applications include low-power IoT sensor nodes, USB-less human-interface devices, industrial sensor signal conditioning, battery-powered handheld instruments, and consumer appliances requiring capacitive touch. Designers also deploy the PIC24FJ64GA102 in low-cost motor control, white-goods user interfaces, and remote controls.
Design consideration: at 32MHz operation power consumption can exceed 15 mA, so enabling sleep modes during idle periods and using the on-chip LPRC oscillator yields significant battery-life gains. Place a 100 nF decoupling capacitor on every VDD pin and route analog references (AVDD/VREF+) away from switching traces for ADC noise immunity.
This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC24FJ family, and practical design notes that go beyond the manufacturer datasheet to help engineers evaluate and substitute the part quickly.
Drop-in alternatives for PIC24FJ64GA102-I/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 PIC24FJ64GA102-I/SP (same form factor and footprint) — differing in Package, ADC, Core Architecture, Operating Temperature, Mounting Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GA002-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ64GA102-I/ML
✅ Drop-In✓ In Stock
$2.42 / Unit
View Datasheet →PIC24FJ64GA002-I/ML
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC24FJ64GA002-I/SS
✅ Drop-In✓ In Stock
$2.51 / Unit
View Datasheet →PIC24FJ64GA002-I/SO
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →PIC24FJ64GA102-I/SP Maximum Ratings & Electrical Characteristics
| Core Processor | PIC |
| Core Size | 16-Bit |
| CPU Speed | 32MHz (16 MIPS) |
| Program Memory | 64KB (22K x 24) Flash |
| RAM | 8KB |
| Supply Voltage | 2.0V to 3.6V |
| Operating Temperature | -40C to +85C (Industrial) |
| I/O Pins | 21 |
| ADC | 10-bit, 1.1 Msps |
| ADC Channels | 10 |
| Serial Interfaces | 2x UART/SPI/I2C |
| Timers | 5 x 16-bit |
| PWM | 16-bit, multiple modes |
| Package | 28-SPDIP (Skinny Plastic DIP) |
| Mounting Type | Through-Hole |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Technology Family | PIC XLP 24F (eXtreme Low Power) |
| Oscillator | Internal 8MHz + PLL, 32kHz LPRC |
| In-Circuit Programming | ICSP |
| RTCC (Real-Time Clock) | Yes |
PIC24FJ64GA102-I/SP Pin Configuration
| Pin 1 | MCLR — Master Clear (reset) input, active-low |
| Pin 2 | RA0 — Port A bit 0 / analog AN0 / VREF+ |
| Pin 3 | RA1 — Port A bit 1 / analog AN1 / VREF- |
| Pin 4 | RA2 — Port A bit 2 / analog AN2 |
| Pin 5 | RA3 — Port A bit 3 / analog AN3 |
| Pin 6 | RA4 — Port A bit 4 / analog AN4 |
| Pin 7 | RA5 — Port A bit 5 / analog AN5 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1 — Crystal oscillator input / CLKI |
| Pin 10 | OSC2 — Crystal oscillator output / CLKO |
| Pin 11 | RB0 — Port B bit 0 / PGED1 / AN6 |
| Pin 12 | RB1 — Port B bit 1 / PGEC1 / AN7 |
| Pin 13 | RB2 — Port B bit 2 / AN8 |
| Pin 14 | RB3 — Port B bit 3 / AN9 |
| Pin 15 | RA6 — Port A bit 6 / OSCI / PGEC2 |
| Pin 16 | RA7 — Port A bit 7 / OSCO / PGED2 |
| Pin 17 | AVDD — Analog power supply |
| Pin 18 | AVSS — Analog ground |
| Pin 19 | RB4 — Port B bit 4 |
| Pin 20 | RB5 — Port B bit 5 |
| Pin 21 | RB6 — Port B bit 6 / ICSPCLK |
| Pin 22 | RB7 — Port B bit 7 / ICSPDAT |
| Pin 23 | RC0 — Port C bit 0 |
| Pin 24 | RC1 — Port C bit 1 |
| Pin 25 | RC2 — Port C bit 2 |
| Pin 26 | RC3 — Port C bit 3 |
| Pin 27 | RC4 — Port C bit 4 |
| Pin 28 | VDD — Digital power supply |
Typical Applications
PIC24FJ64GA102-I/SP is suitable for 6 applications: Low-Power IoT Sensor Node, Capacitive Touch User Interface, Industrial Sensor Signal Conditioning, Battery-Powered Handheld Instruments, Consumer Appliance Control, Low-Cost Motor Control (Brushed DC).
Low-Power IoT Sensor Node
The PIC24FJ64GA102-I/SP's nanoWatt XLP sleep currents below 1 uA combined with its 32MHz 16 MIPS core and 10-bit ADC make it ideal for battery-powered IoT sensor nodes that must run for years on a single cell. With 64KB Flash and 8KB RAM the device can hold a full sensor-fusion stack plus a BLE/MQTT-friendly firmware image. The 28-SPDIP package simplifies hand-soldered prototyping of energy-harvesting nodes where component choice prioritizes power, not footprint. The on-chip RTCC enables scheduled sampling at multi-year intervals. Designers can pair this MCU with an external Sub-GHz or MCU BLE module to publish temperature, humidity, or motion data while maintaining extreme low-power idle states.
Recommended
Capacitive Touch User Interface
The PIC24FJ64GA102-I/SP integrates the Charge Time Measurement Unit (CTMU) that enables hardware-based capacitive touch sensing without an external capacitive controller. With up to 21 I/O pins and on-chip timers, the MCU can directly scan a 4x4 or larger matrix of capacitive buttons, sliders, or wheel interfaces. The 16 MIPS throughput keeps scan latency under 5 ms per channel while the 8KB RAM accommodates debounce and gesture recognition state machines. Industrial-grade operation to +85C and low sleep currents extend battery life in remote-control and home-appliance touch panels. The SPDIP package is especially convenient for prototyping capacitive touch front panels where iterative hardware changes are common.
Recommended
Industrial Sensor Signal Conditioning
The PIC24FJ64GA102-I/SP integrates a 1.1 Msps 10-bit ADC with up to 10 channels, five 16-bit timers, and configurable UART/SPI/I2C - the complete feature set needed to condition and digitize analog signals from industrial transducers. Its 32MHz core can run PID or Kalman control loops on thermistor, strain gauge, or process-current loops at 1 kHz update rates. The 2.0V to 3.6V supply range accommodates standard 3.3V industrial backplanes. With hardware RTCC and on-chip EEPROM emulation it supports time-stamped data logging for SCADA nodes. Through-hole SPDIP packaging simplifies legacy retrofits in factory automation where rework and field service are common.
Recommended
Battery-Powered Handheld Instruments
The PIC24FJ64GA102-I/SP suits handheld multimeters, environmental meters, and medical diagnostic tools thanks to its nanoWatt XLP low-power operation and integrated 10-bit ADC. Designers can power the MCU from a single Li-ion cell via a 3.3V LDO, and rely on the CTMU for capacitive buttons that replace mechanical keys in sealed enclosures. The 64KB Flash supports complex UI state machines and stored calibration constants in EEPROM emulation. Real-time-clock hardware allows accurate timestamping of measurement logs. Industrial temperature tolerance to +85C and robust Flash retention support field-grade reliability across portable instruments.
Recommended
Consumer Appliance Control
The PIC24FJ64GA102-I/SP is well-matched to consumer appliance control boards that need capacitive touch, PWM motor control, and serial communication within tight BOM constraints. Its 16-bit PWM with multiple modes can drive brushless DC fans, small pumps, or solenoid valves directly via gate drivers, while the UART/SPI/I2C peripherals interface to BLDC controllers, displays, or Wi-Fi modules. Industrial temperature grade and on-chip Flash protection support reliable operation across coffee machines, washing machines, and HVAC thermostats. Through-hole SPDIP packaging eases field repair and aftermarket servicing.
Recommended
Low-Cost Motor Control (Brushed DC)
The PIC24FJ64GA102-I/SP delivers 16 MIPS throughput and a 16-bit PWM module that can drive brushed DC motors up to a few hundred milliamps through external MOSFET half-bridges. The integrated 10-bit ADC samples current-sense shunt resistors for closed-loop torque or speed control, and the RTCC schedules maintenance events. With 8KB RAM, the MCU can implement PI control loops for small robotics, toys, and hobby servos without external logic. The SPDIP-28 package and Microchip's free MPLAB XC16 toolchain accelerate prototyping for educational and maker platforms.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GA102-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GA002-I/SP | PIC24FJ64GA102-I/ML | PIC24FJ64GA002-I/ML | PIC24FJ64GA002-I/SS | PIC24FJ64GA002-I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SPDIP (through-hole) | 28-SPDIP (same) | 28-QFN (surface-mount) | 28-QFN (surface-mount) | 28-SSOP (surface-mount) | 28-SOIC (surface-mount) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | 16-bit PIC24F | 16-bit PIC24F | 16-bit PIC24F | 16-bit PIC24F | 16-bit PIC24F | 16-bit PIC24F |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| nanoWatt XLP Sleep | Yes (<1 uA) | No | Yes (<1 uA) | No | No | No |
| CTMU (Capacitive Touch) | Yes | No | Yes | No | No | No |
| I/O Pins | 21 | 21 | 21 | 21 | 21 | 21 |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C | Industrial -40C to +85C |
Key Differentiators
- nanoWatt XLP technology and CTMU on the GA102 vs GA002 (vs PIC24FJ64GA002-I/SP)
- Through-hole SPDIP-28 package for prototype-friendly assembly (vs PIC24FJ64GA102-I/ML)
- Industrial temperature grade and 64KB Flash at low BOM cost (vs PIC24FJ64GA004-I/PT (TQFP-44))
Design Notes
The PIC24FJ64GA102-I/SP nanoWatt XLP technology provides multiple low-power modes including Sleep (<1 uA typical) and Deep Sleep (~0.6 uA). Configure unused peripherals via PMD (Peripheral Module Disable) registers to eliminate their bias current. Estimate: with PMD on all unused peripherals and Sleep mode active between ADC samples, average current can fall below 5 uA for an IoT sensor node sampling once per minute.
Place 100 nF decoupling capacitors on every VDD pin (pin 28) and a single 10 uF bulk capacitor on AVDD (pin 17) for ADC reference stability. Route the analog AVSS trace directly back to a star-ground point near pin 18 to minimize ADC noise coupling from digital switching on the Port B/C pins. For through-hole SPDIP prototypes keep crystal traces short and guard with a ground ring.
Do not program the internal FRC oscillator trimmer value without first enabling the FRC self-calibration routine, or the CPU may start at an unexpected frequency. The MCLR pin (pin 1) requires a 10 kohm pull-up to VDD; leaving it floating causes intermittent reset behavior. For ICSP, ensure the PGEC1/PGED1 (RB1/RB0) pins are isolated from external circuitry that could load them during programming.
Estimated: with the ADC sampling at 1.1 Msps the input impedance on the analog channels drops below 1.7 kohm. Add an external op-amp buffer (e.g., MCP6022) if the source impedance exceeds 2.5 kohm, otherwise ADC accuracy suffers. Place the op-amp within 5mm of the MCU analog pin to minimize parasitic capacitance on the input node.
Compliance Information
RoHS and lead-free compliance per Microchip product page. Not AEC-Q100 qualified - this is a general-purpose industrial MCU; for automotive, choose a PIC24 Q100 variant.
