PIC24FJ256GA610T-I/PT - 16-bit MCU 256KB Flash 32MHz TQFP-100 | Microchip
MPN: PIC24FJ256GA610T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.86 | $4.86 |
| 10 | $4.37 | $43.70 |
| 100 | $3.88 | $388.00 |
| 500 | $3.5 | $1,750.00 |
| 1,000 | $3.12 | $3,120.00 |
| 3,000 | $2.78 | $8,340.00 |
PIC24FJ256GA610T-I/PT Overview
A PIC24FJ-series MCU is a 16-bit modified Harvard RISC microcontroller in the broader PIC® microcontroller family. It belongs to the eXtreme Low Power (XLP) sub-family and integrates a high-performance 16-bit DSP-enhanced core with on-chip Flash, SRAM, USB On-The-Go, and a rich peripheral set (UART, SPI, I2C, ADC, timers, RTCC). The hierarchy is: microcontroller -> embedded MCU -> semiconductor IC, with the PIC24F sitting between 8-bit PIC16/PIC18 devices and 32-bit PIC32 devices.
Key features include 256 KB Flash with dual-partition Live Update for in-field firmware upgrades without downtime, 32 KB SRAM, 16 MIPS performance at 32 MHz, USB On-The-Go with integrated PHY, a 12-bit A/D converter with up to 16 channels, and multiple serial interfaces (UART/SPI/I2C). The 100-pin TQFP exposes a wide I/O count suitable for parallel buses, displays, and multi-sensor designs.
The PIC24FJ256GA610T-I/PT is built on a CMOS process and is optimized for ultra-low-power operation, supporting Sleep modes down to sub-1 uA. The dual-partition Flash architecture (256 KB total split into two 128 KB partitions) enables fail-safe firmware updates: the new image is written to the inactive partition while the active partition continues running, then a swap brings the new firmware online atomically.
Typical applications include industrial HMI panels, USB peripherals, portable medical/fitness devices, low-power data loggers, and any battery-powered design requiring in-field firmware upgrades. The combination of XLP, USB-OTG, and Live Update makes it well suited to designs that must remain deployed for years without service windows.
Design consideration: a 100-pin TQFP requires a 12x12 mm land pattern with 0.5 mm lead pitch; route USB DP/DN as a 90 ohm differential pair with controlled impedance, and reserve the VUSB3V3 pin even when USB is unused to prevent floating-pin leakage.
This page synthesizes verified distributor pricing, drop-in alternatives, application circuits, and design notes not found in the standalone manufacturer datasheet.
Drop-in alternatives for PIC24FJ256GA610T-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 PIC24FJ256GA610T-I/PT (same form factor and footprint) — differing in Package, Core Architecture, ADC, Program Memory (Flash), Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ1024GA610T-I/PT
✅ Drop-In✓ In Stock
$5.85 / Unit
View Datasheet →PIC24FJ256GA610T-I/BG
✅ Drop-In✓ In Stock
$5.36 / Unit
View Datasheet →PIC24FJ256GA610-I/PT
✅ Drop-In✓ In Stock
$3.61 / Unit
View Datasheet →PIC24FJ256GA610-I/BG
✅ Drop-In✓ In Stock
$3.41 / Unit
View Datasheet →PIC24FJ1024GA610T-I/BG
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ128GA610-I/PT
✅ Drop-In✓ In Stock
$4.85 / Unit
View Datasheet →PIC24FJ256GA610T-I/PT Maximum Ratings & Electrical Characteristics
| Core | PIC24F 16-bit RISC (modified Harvard) |
| CPU Speed | 32 MHz (16 MIPS) |
| Program Flash | 256 KB (85.5K x 24) dual-partition with Live Update |
| SRAM | 32 KB |
| Operating Voltage | 2.0 V to 3.6 V |
| USB | USB On-The-Go (OTG) with integrated transceiver |
| ADC | 12-bit, up to 16 channels |
| Package | 100-pin TQFP (12x12 mm, 0.40 mm pitch) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial grade) |
| Timers | Multiple 16-bit and 32-bit timers |
| Serial Interfaces | UART, SPI, I2C (multiple instances) |
| RTCC | Real-Time Clock and Calendar |
| Low-Power Modes | XLP - Sleep, Deep Sleep, Retention modes |
| Process Technology | CMOS |
| RoHS Status | Compliant |
| MSL Level | 3 (168 hours) |
| Lead-Free | Yes |
| Family Series | PIC24FJ256GA610 family |
PIC24FJ256GA610T-I/PT Pin Configuration
| Pin 1 | SDA3/RG15 — I2C3 data or general I/O RG15 |
| Pin 2 | SCL3/RG14 — I2C3 clock or general I/O RG14 |
| Pin 3 | RG13 — General purpose I/O RG13 |
| Pin 4 | RG12 — General purpose I/O RG12 |
| Pin 5 | RG11 — General purpose I/O RG11 |
| Pin 6 | RG10 — General purpose I/O RG10 |
| Pin 7 | RG9 — General purpose I/O RG9 |
| Pin 8 | RG8 — General purpose I/O RG8 |
| Pin 9 | RG7 — General purpose I/O RG7 |
| Pin 10 | RG6 — General purpose I/O RG6 |
| Pin 11 | RG5 — General purpose I/O RG5 |
| Pin 12 | RG4 — General purpose I/O RG4 |
| Pin 13 | RG3 — General purpose I/O RG3 |
| Pin 14 | RG2 — General purpose I/O RG2 |
| Pin 15 | VSS — Ground reference |
| Pin 16 | VDD — Digital supply voltage 2.0-3.6 V |
| Pin 17 | RB15 — General purpose I/O RB15 |
| Pin 18 | RB14 — General purpose I/O RB14 |
| Pin 19 | RB13 — General purpose I/O RB13 |
| Pin 20 | RB12 — General purpose I/O RB12 |
| Pin 21 | RB11 — General purpose I/O RB11 |
| Pin 22 | RB10 — General purpose I/O RB10 |
| Pin 23 | RB9 — General purpose I/O RB9 |
| Pin 24 | RB8 — General purpose I/O RB8 |
| Pin 25 | RB7 — General purpose I/O RB7 |
| Pin 26 | RB6 — General purpose I/O RB6 / programming PGD |
| Pin 27 | RB5 — General purpose I/O RB5 / programming PGC |
| Pin 28 | RB4 — General purpose I/O RB4 |
| Pin 29 | RB3 — General purpose I/O RB3 |
| Pin 30 | RB2 — General purpose I/O RB2 |
| Pin 31 | RB1 — General purpose I/O RB1 |
| Pin 32 | RB0 — General purpose I/O RB0 |
| Pin 33 | VSS — Ground reference |
| Pin 34 | VDD — Digital supply voltage 2.0-3.6 V |
| Pin 35 | RF15 — General purpose I/O RF15 |
| Pin 36 | RF14 — General purpose I/O RF14 |
| Pin 37 | RF13 — General purpose I/O RF13 |
| Pin 38 | RF12 — General purpose I/O RF12 |
| Pin 39 | RF11 — General purpose I/O RF11 |
| Pin 40 | RF10 — General purpose I/O RF10 |
| Pin 41 | RF9 — General purpose I/O RF9 |
| Pin 42 | RF8 — General purpose I/O RF8 |
| Pin 43 | RF7 — General purpose I/O RF7 |
| Pin 44 | RF6 — General purpose I/O RF6 |
| Pin 45 | RF5 — General purpose I/O RF5 |
| Pin 46 | RF4 — General purpose I/O RF4 |
| Pin 47 | RF3 — General purpose I/O RF3 |
| Pin 48 | RF2 — General purpose I/O RF2 |
| Pin 49 | SDA2/RF1 — I2C2 data or general I/O RF1 |
| Pin 50 | SCL2/RF0 — I2C2 clock or general I/O RF0 |
| Pin 51 | VSS — Ground reference |
| Pin 52 | VDD — Digital supply voltage 2.0-3.6 V |
| Pin 53 | RD15 — General purpose I/O RD15 |
| Pin 54 | RD14 — General purpose I/O RD14 |
| Pin 55 | RD13 — General purpose I/O RD13 |
| Pin 56 | RD12 — General purpose I/O RD12 |
| Pin 57 | RD11 — General purpose I/O RD11 |
| Pin 58 | RD10 — General purpose I/O RD10 |
| Pin 59 | RD9 — General purpose I/O RD9 |
| Pin 60 | RD8 — General purpose I/O RD8 |
| Pin 61 | RD7 — General purpose I/O RD7 |
| Pin 62 | RD6 — General purpose I/O RD6 |
| Pin 63 | RD5 — General purpose I/O RD5 |
| Pin 64 | RD4 — General purpose I/O RD4 |
| Pin 65 | SDA1/RD3 — I2C1 data or general I/O RD3 |
| Pin 66 | SCL1/RD2 — I2C1 clock or general I/O RD2 |
| Pin 67 | RD1 — General purpose I/O RD1 |
| Pin 68 | RD0 — General purpose I/O RD0 |
| Pin 69 | VSS — Ground reference |
| Pin 70 | VDD — Digital supply voltage 2.0-3.6 V |
| Pin 71 | RC15 — General purpose I/O RC15 |
| Pin 72 | RC14 — General purpose I/O RC14 |
| Pin 73 | RC13 — General purpose I/O RC13 |
| Pin 74 | RC12 — General purpose I/O RC12 |
| Pin 75 | RC11 — General purpose I/O RC11 |
| Pin 76 | RC10 — General purpose I/O RC10 |
| Pin 77 | RC9 — General purpose I/O RC9 |
| Pin 78 | RC8 — General purpose I/O RC8 |
| Pin 79 | RC7 — General purpose I/O RC7 |
| Pin 80 | RC6 — General purpose I/O RC6 |
| Pin 81 | RC5 — General purpose I/O RC5 |
| Pin 82 | RC4 — General purpose I/O RC4 |
| Pin 83 | RC3 — General purpose I/O RC3 |
| Pin 84 | RC2 — General purpose I/O RC2 |
| Pin 85 | RC1 — General purpose I/O RC1 |
| Pin 86 | RC0 — General purpose I/O RC0 |
| Pin 87 | OSC1/CLKI/RA0 — External clock input or crystal connection |
| Pin 88 | OSC2/CLKO/RA1 — Crystal output or general I/O RA1 |
| Pin 89 | RA2 — General purpose I/O RA2 |
| Pin 90 | RA3 — General purpose I/O RA3 |
| Pin 91 | RA4 — General purpose I/O RA4 |
| Pin 92 | RA5 — General purpose I/O RA5 |
| Pin 93 | VSS — Ground reference |
| Pin 94 | VDD — Digital supply voltage 2.0-3.6 V |
| Pin 95 | RA6 — General purpose I/O RA6 |
| Pin 96 | RA7 — General purpose I/O RA7 |
| Pin 97 | RA9 — General purpose I/O RA9 |
| Pin 98 | RA10 — General purpose I/O RA10 |
| Pin 99 | D+/RG1 — USB OTG D+ data line or I/O RG1 |
| Pin 100 | D-/RG0 — USB OTG D- data line or I/O RG0 |
Typical Applications
PIC24FJ256GA610T-I/PT is suitable for 7 applications: Industrial HMI Control Panels, USB-OTG Peripherals and Data Loggers, Portable Medical and Fitness Devices, Battery-Powered IoT Sensor Hubs, Automotive Aftermarket Accessories, Educational and Prototyping Platforms, Low-Power Wireless Sensor Nodes.
Industrial HMI Control Panels
The PIC24FJ256GA610T-I/PT fits industrial HMI panels because its 100-pin TQFP exposes a wide I/O count for direct connection to character/graphic LCDs, keypads, and parallel peripherals without external bus expander ICs. The 32 KB SRAM provides sufficient buffer space for menu structures and command parsing while the 256 KB dual-partition Flash supports over-the-air feature upgrades on deployed panels without service downtime. The 12-bit ADC handles analog sensor inputs like temperature, pressure, or potentiometer feedback, and the XLP Sleep modes drop quiescent current to sub-uA levels during display idle, helping panels meet industrial EMC and energy budgets.
Recommended
USB-OTG Peripherals and Data Loggers
The PIC24FJ256GA610T-I/PT integrates a USB On-The-Go transceiver, eliminating the need for an external USB PHY and reducing BOM cost for USB peripherals, data loggers, and tethered industrial sensors. The 32 KB SRAM buffers incoming/outgoing USB packets while the 256 KB Flash stores firmware plus logged data tables. Live Update dual-partition Flash lets field-deployed loggers receive firmware updates without bricking the device. Route the DP/DN pair as a 90 ohm controlled-impedance differential and place a 0.1 uF decoupling cap within 5 mm of the VUSB3V3 pin to meet USB 2.0 signal-integrity requirements.
Recommended
Portable Medical and Fitness Devices
The PIC24FJ256GA610T-I/PT suits battery-powered medical and fitness devices because of its XLP eXtreme Low Power architecture: Sleep currents below 1 uA extend coin-cell or Li-Po runtime to weeks or months, while the 16 MIPS core handles sensor fusion and BLE/USB sync tasks. The 12-bit ADC digitizes biometric signals like heart rate, SpO2 current sensing, or temperature with adequate resolution, and the 256 KB Flash accommodates full USB protocol stacks plus application code. The -40C to +85C industrial temperature grade meets consumer-medical device thermal requirements.
Recommended
Battery-Powered IoT Sensor Hubs
The PIC24FJ256GA610T-I/PT serves as a sensor hub in battery-powered IoT deployments thanks to its combination of XLP Sleep modes, USB-OTG, and multiple serial interfaces (UART, SPI, I2C) for connecting radios, environmental sensors, and memory cards. The 32 KB SRAM allows buffering of sensor bursts before low-power wireless transmission, while the 256 KB dual-partition Flash ensures secure OTA firmware upgrades over the air. Designers should route unused I/O to defined states and use the RTCC for time-stamped wake events to maximize battery life across years of deployment.
Recommended
Automotive Aftermarket Accessories
The PIC24FJ256GA610T-I/PT powers aftermarket automotive accessories such as OBD-II loggers, USB charging hubs, and digital instrument clusters because its 100-pin TQFP package handles wide -40C to +85C operation, the 12-bit ADC reads battery voltage and sensor inputs precisely, and the USB-OTG enables tethered diagnostics to mobile apps. The 256 KB Flash with Live Update is ideal for adding vehicle-protocol features post-deployment. Note that the -I/PT suffix is the industrial temperature grade; for OEM under-hood designs, an AEC-Q100-qualified PIC24 variant must be selected instead.
Recommended
Educational and Prototyping Platforms
The PIC24FJ256GA610T-I/PT is well suited as the main MCU on educational and prototyping platforms because it combines generous 256 KB Flash and 32 KB SRAM for student firmware projects, USB-OTG for direct debugging via MPLAB X IDE, and a 100-pin TQFP that exposes every peripheral pin for breadboard-friendly breakout boards. The Microchip Explorer 16 development board natively supports this family via 100-pin PIM modules. Wide compiler support (MPLAB XC16, free version available) lowers the barrier for student adoption.
Recommended
Low-Power Wireless Sensor Nodes
The PIC24FJ256GA610T-I/PT anchors low-power wireless sensor nodes by waking from Sleep on RTCC or external interrupt, sampling sensors via the 12-bit ADC, transmitting over an attached sub-GHz or 2.4 GHz radio through SPI/UART, then returning to deep sleep. Its 32 KB SRAM buffers multi-sample averages, while 256 KB Flash stores radio stacks (e.g., MiWi, LoRa driver) plus application logic. Live Update dual-partition Flash enables secure in-network firmware patches on nodes deployed in inaccessible locations.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ256GA610T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ1024GA610T-I/PT | PIC24FJ256GA610T-I/BG | PIC24FJ256GA610-I/PT | PIC24FJ128GA610-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-pin TQFP (12x12 mm) | 100-pin TQFP (12x12 mm) - same | 100-pin TQFP (12x12 mm) - same | 100-pin TQFP (12x12 mm) - same | 100-pin TQFP (12x12 mm) - same |
| Core / Family | PIC24F 16-bit XLP | PIC24F 16-bit XLP - same | PIC24F 16-bit XLP - same | PIC24F 16-bit XLP - same | PIC24F 16-bit XLP - same |
| CPU Speed | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) |
| Program Flash | 256 KB (dual-partition Live Update) | 1024 KB (dual-partition) | 256 KB (dual-partition) | 256 KB (dual-partition) | 128 KB (single or dual-partition) |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| USB | USB On-The-Go with integrated PHY | USB On-The-Go with integrated PHY | USB On-The-Go with integrated PHY | USB On-The-Go with integrated PHY | USB On-The-Go with integrated PHY |
| Operating 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 | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Dual-partition Flash with Live Update firmware upgrades (vs PIC24FJ128GA610-I/PT)
- Integrated USB On-The-Go transceiver (vs PIC24FJ256GA110T-I/PT)
- Higher Flash density option on same footprint (vs PIC24FJ1024GA610T-I/PT)
Design Notes
Estimated: Place a 10 uF bulk tantalum or ceramic + 0.1 uF decoupling capacitor within 5 mm of each VDD pin and one 0.01 uF within 2 mm. The PIC24FJ256GA610T-I/PT has six VDD/VDDCORE/VUSB3V3 supply domains; grouping all six returns to a single ground star reduces digital switching noise coupling into the on-chip 1.8 V LDO. For USB applications, add a 1 uF + 0.1 uF pair on VUSB3V3 and a ferrite bead between VDD and VUSB3V3 to suppress switching noise.
The 100-pin TQFP (12x12 mm, 0.40 mm lead pitch) requires a 4-layer PCB at minimum to route the USB 90 ohm differential pair cleanly. Two coils must include a continuous ground plane on the layer directly beneath the part to provide both thermal dissipation (the die can dissipate ~1 W peak) and a reference for the DP/DN pair. For high-EMI environments, add a guard ring around the 32 kHz crystal load capacitors (pins 87-88) to suppress radiation of oscillator harmonics.
Do not leave the VUSB3V3 pin floating even if USB is unused - leave a 4.7 uF capacitor to ground to prevent the internal USB regulator from oscillating. Always configure unused I/O as outputs driven low rather than inputs, since floating inputs can draw tens of microamps each and silently exceed Sleep current budgets. When using Live Update, the BTSEQ (boot sequence) bits in the NVMCON register must be configured per the family datasheet; an incorrect sequence can brick the dual-partition swap logic.
Route the USB DP/DN pair on the top layer over a continuous ground plane, keep total length under 50 mm, and match differential impedance to 90 ohms ±10% to meet USB 2.0 full-speed signal-integrity masks. Series ferrite beads are not recommended on DP/DN unless you have measured EMI compliance issues. The 12-bit ADC accuracy depends on keeping the analog supply (AVDD) quiet - a ferrite bead between AVDD and VDD plus dedicated decoupling caps on AVDD/AVSS pairs is mandatory for 12 ENOB performance.
Compliance Information
RoHS compliant per Microchip product page. The -I temperature grade is industrial (-40C to +85C) and is NOT AEC-Q100 qualified - select an AEC-Q100 qualified variant (separate MPN) for OEM automotive under-hood deployments.
