PIC24FJ16GA002-I/SP - 16KB Flash 16-Bit MCU 28-SPDIP | Microchip
MPN: PIC24FJ16GA002-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.95 | $3.95 |
| 10 | $3.62 | $36.20 |
| 100 | $3.18 | $318.00 |
| 500 | $2.84 | $1,420.00 |
| 1,000 | $2.55 | $2,550.00 |
PIC24FJ16GA002-I/SP Overview
A 16-bit microcontroller (MCU) is a single-chip processor that fetches and executes 16-bit wide instructions, giving roughly 2-4x the code density and arithmetic throughput of legacy 8-bit microcontrollers while remaining simpler than 32-bit ARM Cortex-M parts. Within the broader taxonomy, the PIC24FJ16GA002 belongs to the PIC24F family (16-bit) -> PIC microcontrollers -> microcontrollers -> integrated circuits -> semiconductors. The 'FJ' suffix indicates the eXtreme Low Power (XLP) variant with nanoWatt technology, while 'GA002' identifies the general-purpose analog variant with USB-free peripherals.
Key features include up to 16 MIPS performance at 32 MHz, hardware 17x17 multiplier and 32-bit by 16-bit hardware divider (single-cycle execution), 4 KB SRAM with separate DMA-free architecture, on-chip 2.5V/3.3V operation, an integrated RTCC, multiple serial interfaces, and nanoWatt XLP sleep modes drawing microampere-level standby current. Code-guard security and ICSP/In-Circuit Serial Programming are supported, and the device runs the MPLAB X IDE / XC16 toolchain.
Applications include industrial sensing and control modules, low-power consumer devices, sensor hubs, simple USB-less human-interface designs (keypads, displays, motor control loops), and educational / hobbyist platforms where through-hole SPDIP is preferred for breadboarding and rework. The device is also AEC-Q100 qualified in the automotive equivalent (PIC24FJ16GA002-E/SP), making it attractive for non-safety automotive subsystems such as body controllers and lighting.
A practical design consideration is the 2.0V-3.6V VDD range: 5V-tolerant I/O is NOT present, so level shifting is required if the design mixes 3.3V logic with 5V sensors or drivers. For new designs, prefer the smaller-footprint SOIC/SSOP/QFN variants (PIC24FJ16GA002-I/SO, -I/SS, -I/ML) when PCB real estate matters; the SPDIP is mainly chosen for prototyping and through-hole legacy boards.
Drop-in alternatives for PIC24FJ16GA002-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 PIC24FJ16GA002-I/SP (same form factor and footprint) — differing in Package, Core Architecture, Operating Temperature, ADC, I/O Pins.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ16GA002-I/SO
✅ Drop-In✓ In Stock
$2.27 / Unit
View Datasheet →PIC24FJ16GA002-E/SP
✅ Drop-In✓ In Stock
$2.85 / Unit
View Datasheet →PIC24FJ32GA002-I/SP
✅ Drop-In✓ In Stock
$2.31 / Unit
View Datasheet →PIC24FJ64GA002-I/SP
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24F32KA302-I/SP
✅ Drop-In✓ In Stock
$2.5 / Unit
View Datasheet →PIC24F16KA301-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ16GA002-I/SP Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F (16-bit RISC) |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Program Flash Memory | 16 KB (5.5K x 24 instructions) |
| RAM | 4 KB |
| Operating Voltage (VDD) | 2.0 V to 3.6 V |
| I/O Pins | 21 |
| A/D Converter | 10-bit, up to 9 channels |
| Comparators | Yes |
| UART | 2 |
| SPI (MSSP) | 2 |
| I2C (MSSP) | 2 |
| Timers | 5 x 16-bit, 1 x 32-bit |
| RTCC | Yes (Real-Time Clock/Calendar) |
| Hardware Multiplier | 17 x 17, single-cycle |
| Hardware Divider | 32 / 16 bit, single-cycle |
| Package | 28-pin SPDIP (SP) |
| Mounting Type | Through-Hole |
| Operating Temperature | -40 C to +85 C (Industrial, '-I' suffix) |
| ICSP / In-Circuit Programming | Yes |
| Code Guard Security | Yes |
| RoHS Status | Compliant |
PIC24FJ16GA002-I/SP Pin Configuration
| Pin 1 | MCLR — Master Clear (Reset) input, active low. Connect to VDD via 10 kohm pull-up. Also used as ICSP programming voltage input. |
| Pin 2 | RA0 — PORTA bit 0; analog AN0, comparator C1IN+, reference VREF+. |
| Pin 3 | RA1 — PORTA bit 1; analog AN1, comparator C2IN+. |
| Pin 4 | RA2 — PORTA bit 2; analog AN2, comparator C2IN-. |
| Pin 5 | RA3 — PORTA bit 3; analog AN3, comparator C1IN-. |
| Pin 6 | RA4 — PORTA bit 4; analog AN4, comparator C1OUT. |
| Pin 7 | RA5 — PORTA bit 5; analog AN5, comparator C2OUT. |
| Pin 8 | VSS — Ground reference (0 V). |
| Pin 9 | OSC1 — External oscillator input / crystal connection 1. |
| Pin 10 | OSC2 — External oscillator output / crystal connection 2. |
| Pin 11 | RC0 — PORTC bit 0; AN6, INT0. |
| Pin 12 | RC1 — PORTC bit 1; AN7, INT1. |
| Pin 13 | RC2 — PORTC bit 2; AN8, INT2. |
| Pin 14 | RC3 — PORTC bit 3; AN9, SCL digital. |
| Pin 15 | RC4 — PORTC bit 4; SDA digital. |
| Pin 16 | RC5 — PORTC bit 5; UART1 TX digital. |
| Pin 17 | RC6 — PORTC bit 6; UART1 RX digital. |
| Pin 18 | RC7 — PORTC bit 7; digital I/O. |
| Pin 19 | VSS — Ground reference (0 V, secondary). |
| Pin 20 | VDD — Positive supply voltage (2.0 V to 3.6 V). |
| Pin 21 | RB0 — PORTB bit 0; AN10, PGED3 (ICSP data). |
| Pin 22 | RB1 — PORTB bit 1; AN11, PGEC3 (ICSP clock). |
| Pin 23 | RB2 — PORTB bit 2; AN12. |
| Pin 24 | RB3 — PORTB bit 3; AN13. |
| Pin 25 | RB4 — PORTB bit 4; AN14. |
| Pin 26 | RB5 — PORTB bit 5; AN15. |
| Pin 27 | RB6 — PORTB bit 6; AN16, ICSPCLK (primary ICSP clock). |
| Pin 28 | RB7 — PORTB bit 7; AN17, ICSPDAT (primary ICSP data). |
Typical Applications
PIC24FJ16GA002-I/SP is suitable for 7 applications: Industrial Sensor Hub, Battery-Powered Consumer Device Controller, Automotive Body Control (Non-Safety), Hobbyist / Educational Development Platform, Low-Cost USB-less Human-Machine Interface (HMI), Small BLDC / DC Motor Control Loop, Data Logging / Environmental Monitoring.
Industrial Sensor Hub
The PIC24FJ16GA002-I/SP is well-suited to multi-sensor industrial nodes that aggregate slow analog signals and stream the data over UART or SPI. Its 10-bit ADC with up to 9 channels handles thermistors, 4-20mA loop transducers, and ratiometric bridges without an external MUX; the 32 MHz / 16 MIPS core plus hardware 17x17 multiplier lets the firmware run linearization, moving-average, and basic FFT filters in real time. The 16 KB Flash accommodates small TCP/IP or Modbus stacks, and the 4 KB SRAM buffers bursty packets. nanoWatt XLP sleep modes (deep sleep at <1 uA typical) let battery or solar-powered field sensors run for years on a single cell, with the RTCC providing scheduled wake-ups. Industrial-grade -40C to +85C operation tolerates factory floor temperatures, and the 28-SPDIP package simplifies field service and rework.
Recommended
Battery-Powered Consumer Device Controller
The PIC24FJ16GA002-I/SP powers small handheld consumer devices (e.g. e-reader buttons, IR remote controls, smart toothbrushes, and BLE HID bridges) thanks to its nanoWatt XLP technology. In deep sleep the device draws microampere-level standby current, allowing CR2032-powered products to last multiple years on a single coin cell. The 21 GPIO pins directly drive LEDs, capacitive-touch electrodes (via the on-chip CTMU), piezo buzzers, and low-power displays; the RTCC handles wake-on-time events without external components. Hardware cryptographic primitives are not present, but code-guard security prevents firmware cloning. Developers integrate it with the MPLAB X IDE and XC16 compiler for free, and the 28-SPDIP package simplifies breadboard prototypes and small-batch manufacturing through wave soldering.
Recommended
Automotive Body Control (Non-Safety)
In non-safety automotive subsystems - interior lighting, seat-position memory, mirror adjustment, HVAC blend doors, and accessory controllers - the PIC24FJ16GA002-I/SP provides enough MIPS for closed-loop PWM while surviving the harsh electrical environment. The industrial -I variant handles -40C to +85C cabin temperatures, but for under-hood or direct-sunlight dashboards, designers select the AEC-Q100-qualified PIC24FJ16GA002-E/SP in the same 28-SPDIP pinout. PWM channels at up to 16-bit resolution drive LEDs and small motors; the 10-bit ADC reads position feedback; and LIN/UART transceivers like MCP2003 connect to the in-vehicle network. The hardware multiplier handles ramp-rate calculations for soft-start and current limiting without burdening the main loop.
Recommended
Hobbyist / Educational Development Platform
The PIC24FJ16GA002-I/SP is a popular MCU on breadboards, Arduino-style PIC-based platforms, and university embedded systems courses. The 28-SPDIP package fits standard 0.1 inch pitch breadboards and IC sockets without adapter PCBs, allowing students to insert and remove the part hundreds of times. The free MPLAB X IDE + XC16 toolchain lowers the entry barrier, and the PICkit 3 or PICkit 4 in-circuit debugger provides real-time breakpoints, watch windows, and trace. Course topics such as ADC sampling theory, UART framing, I2C master/slave, and PWM motor control fit easily within the 16 MIPS budget and the 16 KB Flash limit. Replacement parts are inexpensive, encouraging hands-on experimentation.
Recommended
Low-Cost USB-less Human-Machine Interface (HMI)
The PIC24FJ16GA002-I/SP drives keypad-scanning, LCD-segment, character LCD, and small graphic OLED HMI panels. Its 21 GPIO can multiplex a 4x5 matrix keypad plus a 2x16 character LCD without external logic, and the 4 KB SRAM holds full-screen display buffers for OLED updates over SPI. The 10-bit ADC reads analog joysticks or rotary encoders through on-chip comparators. For larger displays or capacitive touch overlays, the MCU's SPI master drives controllers like SSD1306 or FT6206 with DMA-free polling. The nanoWatt XLP sleep modes wake on keypad interrupts or RTCC alarms, making the device suitable for battery-powered remote controls and thermostats where USB host connectivity is intentionally absent.
Recommended
Small BLDC / DC Motor Control Loop
The PIC24FJ16GA002-I/SP runs small brushed DC, sensored BLDC, or stepper motor control loops at moderate RPM. The 16 MIPS core, hardware multiplier, and on-chip 16-bit PWM (with up to 6 PWM channels in some PIC24F variants) provide closed-loop PI control at >20 kHz switching frequency. Back-EMF or Hall-sensor feedback is sampled through the 10-bit ADC, and the RTCC schedules slow background tasks like temperature monitoring. For higher-power or higher-RPM systems, designers migrate upward to PIC24EP motor-control families, but the GA002 remains a cost-optimized choice for fans, pumps, and small appliances. The 28-SPDIP package allows easy hand-soldered prototypes and field repairs.
Recommended
Data Logging / Environmental Monitoring
The PIC24FJ16GA002-I/SP is ideal for stand-alone data loggers that sample environmental sensors over I2C/SPI and store results to external EEPROM or SD cards. The 10-bit ADC reads analog channels (e.g. soil moisture, pH probe, light level) at up to 500 ksps, while the hardware UART/SPI interfaces connect to digital sensors like SHT21 (humidity/temperature) and BMP280 (pressure). The 16 KB Flash runs the logger firmware with file-system overhead, and the 4 KB SRAM acts as a sector buffer before flushing to external SPI Flash. nanoWatt XLP sleep modes and the RTCC enable periodic sampling at intervals from seconds to days, and the industrial -40C to +85C rating supports outdoor enclosures. SD-card SPI mode operates at up to 25 MHz, which the 32 MHz core handles with margin.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ16GA002-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ16GA002-I/SO | PIC24FJ16GA002-E/SP | PIC24FJ32GA002-I/SP | PIC24FJ64GA002-I/SP | PIC24F32KA302-I/SP |
|---|---|---|---|---|---|---|
| Package | 28-SPDIP (SP) | 28-SOIC (SO) | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same | 28-SPDIP (SP) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 16 KB | 16 KB - same | 16 KB - same | 32 KB (2x larger) | 64 KB (4x larger) | 32 KB (2x larger) |
| RAM | 4 KB | 4 KB - same | 4 KB - same | 8 KB (2x larger) | 8 KB (2x larger) | 2 KB (50% smaller) |
| CPU MIPS | 16 MIPS at 32 MHz | 16 MIPS - same | 16 MIPS - same | 16 MIPS - same | 16 MIPS - same | 8 MIPS at 32 MHz (50% slower) |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C - same | -40 C to +125 C (Extended/AEC-Q100) | -40 C to +85 C - same | -40 C to +85 C - same | -40 C to +85 C - same |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V - same | 2.0 V to 3.6 V - same | 2.0 V to 3.6 V - same | 2.0 V to 3.6 V - same | 1.8 V to 3.6 V (wider low-end) |
| Automotive Qualified | No (Industrial grade) | No | Yes (AEC-Q100) | No | No | No |
Key Differentiators
- True 28-SPDIP pin-compatible drop-in upgrade path within the same PIC24FJ16GA002 family (vs PIC24FJ16GA002-I/SO)
- Automotive-qualified variant available in the same 28-SPDIP footprint (vs PIC24FJ16GA002-E/SP)
- On-chip RTCC, CTMU, and 10-bit ADC for sensor and timing applications (vs PIC24F32KA302-I/SP)
Design Notes
Estimated: PIC24FJ16GA002-I/SP core current is roughly 8 mA/MIPS active (typical 11 mA at 32 MHz / 3.3V). Add another 5-10 mA for GPIO toggling and ADC sampling. A decoupling capacitor pair of 100 nF ceramic + 10 uF bulk placed within 5 mm of VDD (pin 20) and VSS (pin 19) is mandatory; pin 8 (VSS) should also be decoupled. For battery applications, leverage nanoWatt XLP sleep modes (deep sleep at <1 uA typical) and wake the MCU via RTCC alarm or external interrupt to extend battery life by orders of magnitude. Do not connect MCLR (pin 1) directly to VDD without a 10 kohm pull-up - the ICSP programmer requires the ability to pull MCLR low.
For 28-SPDIP layout, allow a 0.1 inch pitch through-hole footprint with at least 0.6 mm annular ring and 0.3 mm drill, plus a top-side copper pour under the package body for thermal relief (estimated 35 C/W theta-JA for SPDIP-28 in still air). Keep the 32 MHz crystal traces short (<5 mm) and guard them with a ground ring to reduce EMI. Reserve a 4-pin header (or test pads) for ICSP: MCLR, VDD, VSS, RB6/ICSPCLK, RB7/ICSPDAT - this lets you program the part on-board without removing it. If the design will ever see factory firmware updates, do not share RB6/RB7 with active drivers; route them as no-connects in production.
The PIC24FJ16GA002-I/SP GPIO are NOT 5 V tolerant - apply only signals in the 0 V to VDD range. Mixing 3.3 V MCU I/O with 5 V sensors or drivers requires a level shifter (e.g. TXS0108E for multi-channel, or a simple resistor divider for low-speed inputs). The 10-bit ADC input impedance is typically 10 kohm, so use an external buffer or keep source impedance below 2.5 kohm to avoid ADC droop. For SPI buses running above 10 MHz, add 33 ohm series resistors at the driver pins and keep traces matched in length to reduce ringing. I2C buses require external 4.7 kohm pull-ups to VDD even when using the internal weak pull-ups.
Common pitfalls with the PIC24FJ16GA002-I/SP include: (1) Forgetting that Configuration bits must be programmed to enable the oscillator and disable the watchdog - leaving the WDT enabled without an interrupt in firmware causes the part to reset unexpectedly. (2) Applying 5 V signals to GPIO pins, which damages the MCU - always level-shift 5 V inputs. (3) Using the internal 8 MHz FRC oscillator without calibrating against the 32.768 kHz RTCC crystal - the FRC drift of 2-3% may fail UART timing budgets. (4) Driving heavy loads directly from GPIO - each pin is rated at 25 mA source/sink, and the package total is 200 mA; use a MOSFET driver for motors and relays. (5) Forgetting to disable analog inputs on digital-only pins to save ~1 uA each in sleep.
Compliance Information
PIC24FJ16GA002-I/SP is industrial-grade (-40C to +85C), lead-free, and RoHS/REACH compliant per Microchip product environmental certifications. The -E/SP variant in the same family carries AEC-Q100 automotive qualification for under-hood/dashboard use. Halogen-free status was not explicitly stated in the verified web data; refer to Microchip's material declaration documents for definitive confirmation.
