PIC24FJ64GA108T-I/PT - 16-bit 32MHz 64KB Flash MCU | Microchip
MPN: PIC24FJ64GA108T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.58 | $55.80 |
| 100 | $4.95 | $495.00 |
| 500 | $4.45 | $2,225.00 |
| 1,000 | $3.99 | $3,990.00 |
PIC24FJ64GA108T-I/PT Overview
A microcontroller (MCU) is an integrated circuit containing a CPU, memory, and programmable peripherals on a single die. It is the central control element in embedded systems ranging from consumer appliances to industrial controllers. The PIC24F family specifically targets low-power and connectivity-rich applications, occupying the mid-range position in Microchip's 16-bit MCU portfolio between 8-bit PIC16/PIC18 and 32-bit PIC32 families.
Key features of the PIC24FJ64GA108T-I/PT include 64KB Flash for firmware storage, 16KB SRAM for data buffering, three I2C and three SPI serial interfaces, four UART modules, 23 independent timers, and the NanoWatt power-saving technology that drops quiescent current below 100 nA in sleep modes. The 80-pin TQFP package exposes a generous I/O count, making the part suitable for applications requiring multiple peripheral channels in parallel.
The PIC24FJ architecture combines a 16-bit modified Harvard CPU core with a wide range of digital and analog peripherals. On-chip debug, JTAG boundary scan, and ICSP (In-Circuit Serial Programming) simplify firmware development using Microchip's MPLAB X IDE and MPLAB Snap or PICkit programmers.
Typical applications include industrial control panels, smart energy metering, USB-enabled embedded devices, sensor hubs, and low-power IoT edge nodes. The wide peripheral set reduces external component count and the low standby current extends battery life in portable products.
When designing with this part, observe Microchip's recommended decoupling (one 100 nF ceramic per VDD pin plus a bulk 10 uF), keep analog and digital ground planes separated, and follow the datasheet's I/O-pin-mapped peripheral assignment tables to avoid pin-function conflicts.
This page synthesizes distributor pricing, parametric drop-in alternatives from the same PIC24FJ64GA family, and practical design notes that go beyond the manufacturer datasheet to support BOM decisions for industrial and connectivity applications.
Drop-in alternatives for PIC24FJ64GA108T-I/PT — 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 PIC24FJ64GA108T-I/PT (same form factor and footprint) — differing in Package, Standby Current, Timers, I/O Pins, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GA108-I/PT
✅ Drop-In✓ In Stock
$4.95 / Unit
View Datasheet →PIC24FJ128GA108T-I/PT
✅ Drop-In✓ In Stock
$4.45 / Unit
View Datasheet →PIC24FJ256GA108T-I/PT
✅ Drop-In✓ In Stock
$4.65 / Unit
View Datasheet →PIC24FJ64GA106T-I/PT
✅ Drop-In✓ In Stock
$2.95 / Unit
View Datasheet →PIC24FJ64GA108T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F (16-bit modified Harvard) |
| Maximum CPU Speed | 32 MIPS at 32 MHz |
| Program Flash Memory | 64 KB (22K x 24 instructions) |
| Data RAM | 16 KB |
| Package | 80-pin TQFP (PT), 12x12 mm, 0.5 mm pitch |
| Supply Voltage | 2.0 V to 3.6 V |
| I/O Pins | 69 (typical for 80-pin TQFP variant) |
| Timers | 23 independent timers |
| UART Modules | 4 |
| SPI Modules | 3 |
| I2C Modules | 3 |
| Operating Temperature | -40C to +85C (Industrial, -I suffix) |
| Standby Current | <100 nA (NanoWatt technology) |
| Programming/Debug | ICSP + JTAG, MPLAB Snap/PICkit compatible |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
PIC24FJ64GA108T-I/PT Pin Configuration
| Pin 1 | RP1/RB1 — Remappable I/O / I/O port B1 |
| Pin 2 | RP2/RB2 — Remappable I/O / I/O port B2 |
| Pin 3 | RP3/RB3 — Remappable I/O / I/O port B3 |
| Pin 4 | RP4/RB4 — Remappable I/O / I/O port B4 |
| Pin 5 | RP5/RB5 — Remappable I/O / I/O port B5 |
| Pin 6 | VDD — Digital logic supply (2.0V-3.6V) |
| Pin 7 | VSS — Digital logic ground |
| Pin 8 | RP6/RB6 — Remappable I/O / I/O port B6 (PGC) |
| Pin 9 | RP7/RB7 — Remappable I/O / I/O port B7 (PGD) |
| Pin 10 | RP8/RB8 — Remappable I/O / I/O port B8 |
| Pin 11 | RP9/RB9 — Remappable I/O / I/O port B9 |
| Pin 12 | RP10/RB10 — Remappable I/O / I/O port B10 |
| Pin 13 | RP11/RB11 — Remappable I/O / I/O port B11 |
| Pin 14 | RP12/RB12 — Remappable I/O / I/O port B12 |
| Pin 15 | RP13/RB13 — Remappable I/O / I/O port B13 |
| Pin 16 | RP14/RB14 — Remappable I/O / I/O port B14 |
| Pin 17 | VCAP — Decoupling cap for internal core regulator |
| Pin 18 | RP15/RB15 — Remappable I/O / I/O port B15 |
| Pin 19 | OSCI/CLKI — Crystal input / external clock |
| Pin 20 | OSCO/CLKO — Crystal output |
Typical Applications
PIC24FJ64GA108T-I/PT is suitable for 6 applications: Industrial Control Panels, Smart Energy Metering, Battery-Powered IoT Sensor Hubs, Human-Machine Interface (HMI) Displays, Medical Monitoring Devices, Automotive Body Electronics.
Industrial Control Panels
The PIC24FJ64GA108T-I/PT fits industrial control panels because of its 32 MIPS 16-bit core, 16 KB RAM, and 69 I/O pins, which allow direct drive of multiplexed keypads, LED indicators, and relay or SSR outputs without external expanders. The 80-pin TQFP package is footprint-compatible with the PIC24FJ128GA108 and PIC24FJ256GA108, giving designers an upward migration path when firmware outgrows 64 KB Flash. With four UART, three SPI, and three I2C peripherals, multiple isolated RS-485 ports and sensor buses connect concurrently. NanoWatt standby (<100 nA) and the wide 2.0V-3.6V supply range enable robust operation in 24 V industrial backplanes behind a step-down regulator.
Recommended
Smart Energy Metering
The PIC24FJ64GA108T-I/PT is widely used in single-phase and multi-function smart energy meters thanks to its 32 MIPS throughput, ample 16 KB RAM for metering buffers, and three SPI channels for ADC and current-sense ICs. The on-chip 16-bit timers with input capture accurately measure line frequency and zero-cross events for class-1 metering accuracy. The 64 KB Flash accommodates metrology algorithms plus optional DLMS/COSEM or IEC 62056 protocol stacks. NanoWatt deep sleep keeps standby current below 100 nA, supporting IEC 62053-21 idle-mode requirements, while the 2.0V-3.6V range allows direct battery backup during power outages.
Recommended
Battery-Powered IoT Sensor Hubs
IoT sensor hubs leverage the PIC24FJ64GA108T-I/PT's <100 nA NanoWatt standby current and rich peripheral mix (3x SPI, 3x I2C, 4x UART) to aggregate sensor data over BLE, LoRa, or sub-GHz radios and forward via Wi-Fi or cellular modules. The 16-bit core delivers 32 MIPS, sufficient to run small protocol stacks or edge filtering before transmission. With 16 KB RAM the MCU can buffer several seconds of sensor telemetry before uplink, reducing wake-time and saving power. The 2.0V-3.6V supply range lets the device run directly from a single Li-ion or 2xAA cell stack with no additional LDO complexity.
Recommended
Human-Machine Interface (HMI) Displays
The PIC24FJ64GA108T-I/PT drives small-to-mid-size HMI panels with TFT or character LCDs, leveraging its 69 I/O pins for parallel display data and resistive-touch AIN channels. At 32 MIPS the core can refresh QVGA displays while running keypad scanning and menu logic. 64 KB Flash accommodates LVGL/MCUFRIEND-style graphics libraries for graphical HMI. The four UART channels support isolated RS-485 or RS-232 host comms, while the three SPIs drive external flash for font/icon storage. The 80-pin TQFP package's 12x12 mm footprint fits compact panel enclosures, and migration to PIC24FJ256DA1xx is straightforward for USB-enabled HMI designs.
Recommended
Medical Monitoring Devices
Medical monitoring devices such as patient bedside terminals, pulse oximetry front-ends, and portable nebulizer controllers use the PIC24FJ64GA108T-I/PT for its deterministic 16-bit core, 32 MIPS throughput, and low standby current. The 16 KB RAM can buffer multiple vital-sign waveforms while 64 KB Flash holds sensor-fusion firmware (e.g., SpO2 + temperature + respiratory rate). With three I2C channels the MCU interfaces to PPG sensors, temperature ICs, and EEPROMs concurrently; with four UART channels it connects to Bluetooth modules for data uplink. The 2.0V-3.6V supply range simplifies Li-ion battery designs, and NanoWatt modes extend runtime during patient transport.
Recommended
Automotive Body Electronics
Within automotive body electronics - HVAC panels, mirror controllers, accessory modules - the PIC24FJ64GA108T-I/PT serves as the central logic controller when AEC-Q100 Grade 2 qualification is sufficient. Its wide 2.0V-3.6V supply range tolerates 12 V battery drops down to cranking voltages, and the four UARTs bridge LIN transceivers, K-line diagnostics, and accessory comms. The 69 I/O pins drive multiple LED matrices, keypads, and BLDC fan-tach feedback paths in parallel. The 80-pin TQFP provides an industrial-friendly footprint for retrofit designs; for full AEC-Q100 Grade 0/1 automotive programs, however, designers should move to the AEC-qualified PIC24FJxxx variants.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GA108T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GA108-I/PT | PIC24FJ128GA108T-I/PT | PIC24FJ256GA108T-I/PT | PIC24FJ64GA106T-I/PT |
|---|---|---|---|---|---|
| Package | TQFP-80 (PT) | TQFP-80 (PT) | TQFP-80 (PT) | TQFP-80 (PT) | TQFP-80 (PT) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash Memory | 64 KB | 64 KB | 128 KB | 256 KB | 64 KB |
| Data RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| CPU Speed | 32 MIPS / 32 MHz | 32 MIPS / 32 MHz | 32 MIPS / 32 MHz | 32 MIPS / 32 MHz | 32 MIPS / 32 MHz |
| Supply Voltage | 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 |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| Packaging Format | Tape & Reel (-T) | Tray (no -T) | Tape & Reel (-T) | Tape & Reel (-T) | Tape & Reel (-T) |
Key Differentiators
- Highest Flash within the GA108 pin-compatible family (vs PIC24FJ128GA108T-I/PT)
- Identical die and pinout in tray packaging (vs PIC24FJ64GA108-I/PT)
- Compact TQFP-80 footprint shared with higher-memory siblings (vs PIC24FJ64GP205-I/PT)
Design Notes
The PIC24FJ64GA108T-I/PT operates from 2.0V to 3.6V, but full 32 MIPS performance requires VDD >= ~3.0V. Place one 100 nF X7R ceramic decoupling capacitor close to each VDD pin and a single 10 uF bulk on the supply rail. For battery-powered designs, use a low-Iq LDO (e.g., MCP1700) to maintain sleep-mode current below 100 nA. Disable unused peripherals via PMD registers before entering sleep to achieve NanoWatt standby levels.
The 80-pin TQFP-80 (12x12 mm) has 0.5 mm lead pitch - use a PCB land pattern with 0.30 mm pad width and 0.55 mm length per IPC-7351 nominal. Keep trace length from the crystal (OSCI/OSCO) under 5 mm, and guard the VCAP pin with a 10 uF ceramic tied to ground, no closer than 1 mm to the pin to ensure regulator stability. Route ICSP signals PGC/PGD away from analog and RF traces to minimize programming glitches.
Common pitfalls when using the PIC24FJ64GA108T-I/PT include forgetting to configure remappable peripheral pins via the RPINRx/RPORx registers before using UART/SPI/I2C alternate functions, and leaving the JTAG-enabled pins floating in production - which can draw extra current or cause unintended triggers. Always clear the JTAGEN bit in the config word if JTAG is not used. Also, ensure the 16-bit timer input capture is configured for the correct edge polarity, or pulse-width measurements will be inverted.
Compliance Information
RoHS and REACH compliance per Microchip product page. The industrial -I temperature grade is -40C to +85C. The standard PIC24FJ64GA108T-I/PT is not AEC-Q100 qualified; for automotive designs use AEC-Q100-graded PIC24FJxxx variants.