PIC24FJ64GA202T-I/SO - 16-bit 32MHz 64KB Flash MCU | Microchip
MPN: PIC24FJ64GA202T-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.85 | $3.85 |
| 10 | $3.47 | $34.70 |
| 100 | $3.08 | $308.00 |
| 500 | $2.76 | $1,380.00 |
| 1,000 | $2.47 | $2,470.00 |
PIC24FJ64GA202T-I/SO Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and a rich set of programmable peripherals on one die. The PIC24F family occupies the 16-bit tier of Microchip's PIC portfolio above the 8-bit PIC16/PIC18 families and below the 32-bit PIC32 families, offering higher computational throughput than 8-bit MCUs while retaining a low power envelope and a deterministic Harvard architecture optimized for real-time control.
Key features of the PIC24FJ64GA202 include a 16-channel 10/12-bit ADC with up to 500 ksps conversion rate, multiple serial interfaces (UART, SPI, I2C), five 16-bit timers, hardware crypto acceleration (AES, DES, 3DES, SHA, MD5, RNG), and Microchip's eXtreme Low-Power (XLP) technology that delivers sleep currents below 1 uA. The integrated crypto engine and secure key storage eliminate the need for an external security IC in many IoT edge nodes, simplifying BOM and shrinking PCB area.
Typical applications include low-power IoT sensor nodes with secure wireless uplinks, battery-powered smart locks and access controllers, secure medical wearables, industrial sensor hubs with authenticated telemetry, and consumer devices requiring firmware authentication. The wide 2.0V-3.6V input range enables direct connection to single-cell Li-ion (2.7V-4.2V regulated) or 2xAA battery stacks (2.0V-3.2V direct).
When designing with this device, allocate one dedicated I/O pin as the ICSP programming interface (PGDx/PGECx) and reserve the MCLR reset pin as an input-only or as a controlled reset. The on-chip crypto peripherals consume additional code space and RAM; reserve at least 6KB of Flash for a typical application using AES + RNG + a real-time RTOS or state machine.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet. Compare the PIC24FJ64GA202 against the PIC24FJ64GA002, PIC24FJ32GA102, and PIC24FJ128GB202 to weigh Flash density, peripheral count, and crypto features before committing to a design.
Drop-in alternatives for PIC24FJ64GA202T-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 PIC24FJ64GA202T-I/SO (same form factor and footprint) — differing in ADC, Package, Core Architecture, Operating Temperature, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GA202-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ64GA002-I/SO
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →PIC24FJ64GA002-E/SO
✅ Drop-In✓ In Stock
$3.81 / Unit
View Datasheet →PIC24FJ128GB202T-I/SO
✅ Drop-In✓ In Stock
$4.42 / Unit
View Datasheet →PIC24FJ64GA202T-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F (16-bit Harvard) |
| Family | PIC® XLP™ 24F |
| Flash Program Memory | 64 KB (64K x 8) |
| SRAM Data Memory | 8 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage Range | 2.0 V to 3.6 V |
| Operating Temperature Range | -40 °C to +85 °C (Industrial) |
| Package | 28-pin SOIC (7.50 mm width) |
| Pin Count | 28 |
| ADC | 10/12-bit, 16-channel, up to 500 ksps |
| Crypto Engine | AES, DES, 3DES, SHA, MD5, RNG |
| Timers | 5 x 16-bit |
| Communication Interfaces | UART, SPI, I2C |
| eXtreme Low-Power (XLP) | Yes, sleep current < 1 uA |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
PIC24FJ64GA202T-I/SO Pin Configuration
| Pin 1 | RA0 — PORTA bit 0 / ICSP programming data |
| Pin 2 | RA1 — PORTA bit 1 / ICSP programming clock |
| Pin 3 | RA2 — PORTA bit 2 |
| Pin 4 | RA3 — PORTA bit 3 |
| Pin 5 | RA4 — PORTA bit 4 |
| Pin 6 | RA5 — PORTA bit 5 |
| Pin 7 | RA6 — PORTA bit 6 |
| Pin 8 | RA7 — PORTA bit 7 |
| Pin 9 | VSS — Ground reference |
| Pin 10 | OSC1 — Crystal oscillator input or external clock input |
| Pin 11 | OSC2 — Crystal oscillator output |
| Pin 12 | RB0 — PORTB bit 0 / programming enable |
| Pin 13 | RB1 — PORTB bit 1 |
| Pin 14 | RB2 — PORTB bit 2 |
| Pin 15 | RB3 — PORTB bit 3 |
| Pin 16 | RB4 — PORTB bit 4 |
| Pin 17 | RB5 — PORTB bit 5 |
| Pin 18 | RB6 — PORTB bit 6 / ICSP programming clock |
| Pin 19 | RB7 — PORTB bit 7 / ICSP programming data |
| 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
PIC24FJ64GA202T-I/SO is suitable for 6 applications: Secure IoT Sensor Node with Battery Power, Smart Lock and Secure Access Controller, Battery-Powered Wearable Health Device, Industrial Sensor Hub with Authenticated Telemetry, Consumer Device with Authenticated Firmware, Smart Home Sensor and Actuator Node.
Secure IoT Sensor Node with Battery Power
The PIC24FJ64GA202T-I/SO fits battery-powered IoT sensor nodes because its integrated hardware crypto engine (AES, SHA, RNG) eliminates the need for an external security IC, reducing BOM cost and PCB area. Its 64KB Flash is sufficient for a typical sensor stack (sensor drivers + crypto library + TCP/IP or LoRaWAN stack + OTA bootloader), and 8KB SRAM supports RTOS or state-machine implementations. Operating from 2.0V to 3.6V, it runs directly from a 2xAA cell (2.0V-3.2V) or regulated Li-ion (3.3V). XLP sleep currents below 1 uA extend battery life to multiple years on duty-cycled measurements.
Recommended
Smart Lock and Secure Access Controller
Smart lock and electronic access control designs benefit from the PIC24FJ64GA202T-I/SO's secure key storage and hardware crypto engine, which protect PIN codes, biometric templates, and access logs from firmware extraction attacks. The 16-channel 10/12-bit ADC reads multiple keypad, position, and tamper-detection sensors without external multiplexers, while five 16-bit timers drive motor control PWM and deadbolt positioning. Operating at 32 MHz (16 MIPS) the device can complete AES authentication in under 1 ms per challenge-response cycle, keeping access latency under user-perceivable limits.
Recommended
Battery-Powered Wearable Health Device
Wearable medical and fitness devices such as glucose monitors, pulse oximeters, and continuous thermometer patches benefit from the PIC24FJ64GA202T-I/SO's XLP architecture delivering sleep currents below 1 uA, allowing multi-month battery life from a single coin cell. The 32 MHz core provides enough throughput to run on-chip DSP for heart-rate or SpO2 calculation in real time. The integrated crypto engine secures patient-identifiable health data before wireless transmission, supporting HIPAA-style requirements. The wide 2.0V-3.6V supply range accommodates direct CR2032 (3.0V nominal) and rechargeable Li-Po designs.
Recommended
Industrial Sensor Hub with Authenticated Telemetry
Industrial sensor hubs in factory automation require authenticated telemetry to prevent data spoofing; the PIC24FJ64GA202T-I/SO's hardware AES and SHA engines perform message authentication codes (MAC) at line speed without loading the CPU. The 16-channel ADC reads multiple analog sensors (pressure, flow, temperature, level) at 500 ksps aggregate rate. UART, SPI, and I2C peripherals connect to RS-485 transceivers, wireless modules, or local displays. The -40C to +85C industrial temperature rating and 2.0V-3.6V supply tolerance suit 24V industrial bus systems with onboard regulation.
Recommended
Consumer Device with Authenticated Firmware
Consumer products such as smart appliances, connected toys, and aftermarket automotive accessories benefit from secure firmware boot, which the PIC24FJ64GA202T-I/SO supports via on-chip AES decryption and SHA verification during startup. This prevents malicious firmware injection and protects OEM brand integrity. The 64KB Flash is adequate for application firmware plus a small encrypted bootloader, while 8KB SRAM supports UI state and protocol stacks. The 28-SOIC package (7.50mm body) is widely accepted in consumer electronics manufacturing lines using pick-and-place equipment.
Recommended
Smart Home Sensor and Actuator Node
Smart-home sensor and actuator nodes (door/window sensors, water leak detectors, smart valves) need to run for years on a coin cell while occasionally encrypting transmissions to a gateway. The PIC24FJ64GA202T-I/SO's XLP sleep mode and hardware AES engine deliver both: <1 uA idle current plus sub-millisecond AES for authenticated transmissions. The 16-channel ADC monitors battery voltage and sensor signals; multiple timers wake the MCU at scheduled intervals. The 2.0V-3.6V supply range operates directly from a CR2477 (3.0V) coin cell without boost conversion.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GA202T-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GA202-I/SO | PIC24FJ64GA002-I/SO | PIC24FJ64GA002-E/SO | PIC24FJ128GB202T-I/SO |
|---|---|---|---|---|---|
| Package | 28-SOIC (7.50mm) | 28-SOIC (7.50mm) - same | 28-SOIC (7.50mm) - same | 28-SOIC (7.50mm) - same | 28-SOIC (7.50mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Flash Memory | 64 KB | 64 KB - same | 64 KB - same | 64 KB - same | 128 KB |
| SRAM | 8 KB | 8 KB - same | 8 KB - same | 8 KB - same | 8 KB - same |
| Maximum CPU Speed | 32 MHz (16 MIPS) | 32 MHz - same | 32 MHz - same | 32 MHz - same | 32 MHz - same |
| Hardware Crypto Engine | Yes (AES, DES, SHA, MD5, RNG) | Yes - same | No - crypto removed | No - crypto removed | No - crypto removed |
| USB Interface | No | No - same | No - same | No - same | Yes (USB 2.0 Full-Speed) |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C - same | -40 °C to +85 °C - same | -40 °C to +125 °C (extended) | -40 °C to +85 °C - same |
Key Differentiators
- Integrated hardware crypto engine with secure key storage (vs PIC24FJ64GA002-I/SO)
- Same footprint scalability to 128KB Flash with USB (vs PIC24FJ128GB202T-I/SO)
- Extended-temperature variant available in same package (vs PIC24FJ64GA002-E/SO)
Design Notes
Place a 100 nF decoupling capacitor as close as physically possible to the VDD pin (pin on the 28-SOIC pinout is typically shared with AVdd). Add a 10 uF bulk capacitor near the MCU VDD node to handle peak digital load transients. Route the ICSP programming clock and data lines (typically RB6 and RB7 on PIC24F devices) with traces under 100 mm to maintain reliable in-circuit programming. Keep the MCLR pin pulled up through a 10 kohm resistor; do not leave it floating, or the device may randomly reset.
Do not assume that the same MPLAB X project will compile unchanged when migrating between PIC24FJ64GA202 and PIC24FJ64GA002, because the crypto peripheral register map differs. If firmware uses the AES or RNG peripheral, it will not run on the GA002 variant. Conversely, removing all crypto calls and using the GA002 as a drop-in yields significant BOM savings. Also reserve dedicated I/O for the JTAG/ICSP interface (PGECx/PGEDx), because re-routing these later forces PCB rework.
When running the 28-SOIC at 32 MHz, route the external crystal traces (OSC1/OSC2) symmetrically with the load capacitors (typically 15-33 pF) placed immediately adjacent to the IC pins. Keep crystal traces short (< 10 mm), surrounded by a ground pour, and away from high-current switching nodes like motor drivers. If using the internal FRC oscillator instead, calibrate against the 32.768 kHz LPRC secondary to keep UART baud-rate error below 2%.
Compliance Information
RoHS compliant and lead-free per Microchip product page. Not AEC-Q100 qualified; for automotive designs use AEC-Q100 qualified parts from the PIC24FJ family.
