PIC24FJ256GA110-I/PT - 32MHz 256KB Flash 16-bit MCU | Microchip
MPN: PIC24FJ256GA110-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.84 | $8.84 |
| 10 | $7.92 | $79.20 |
| 100 | $7.04 | $704.00 |
| 500 | $6.33 | $3,165.00 |
| 1,000 | $5.61 | $5,610.00 |
PIC24FJ256GA110-I/PT Overview
A 16-bit microcontroller (MCU) is a class of embedded processor with a 16-bit data path and 16-bit instruction width that balances the throughput of 32-bit devices with the code density and cost of 8-bit devices. Within the broader taxonomy: MCU -> 16-bit MCU -> PIC24 family -> PIC24F sub-family (Flash, low-power). PIC24F parts use a modified Harvard architecture with a 24-bit instruction word, making them well-suited to mixed-signal control applications that exceed 8-bit capability but do not require a DSP.
Key features include 256 KB self-programmable Flash with ECC, 16 KB SRAM, three 16-bit timers plus five 16-bit Timer/Counter modules, four UART, three SPI, three I2C, an 8-channel hardware DMA, a 10/12-bit ADC with up to 500 ksps, two analog comparators, and a Real-Time Clock Calendar (RTCC) with less than 100 nA standby current. The hardware multiplier performs 16x16-bit signed operations in a single cycle. Integrated peripherals include a Parallel Master Port (PMP) for graphics and a 16-bit PMP for external memory/display interfaces.
Architecturally the PIC24FJ256GA110 uses a 5-stage pipeline, a 24-bit instruction bus, dual-port SRAM, and a Peripheral Pin Select engine that remaps digital peripherals to any of the 85 I/O pins at runtime. eXtreme Low Power (XLP) technology, deep-sleep gating of unused peripherals, and an on-chip LDO regulator keep active current in the low single-digit mA range and standby current below 100 nA. The CTMU peripheral provides touch sensing and time-of-flight measurement.
Typical applications include low-power connected sensors, industrial HMI panels, USB/HID bridges, point-of-sale terminals, automotive body controllers, portable medical instrumentation, and graphics/text TFT displays driven by the integrated PMP interface. The 256 KB Flash and 16 KB RAM are well sized for IPv4/IPv6 stacks, USB device class drivers, and small RTOS kernels such as FreeRTOS or Micrium.
When designing with this device, place a 10 uF + 0.1 uF bulk-decoupling pair near VDD/AVDD pins and ensure the PPS mapping is locked in the configuration bits before runtime, since PPS registers are write-protected after the first write. Configure the integrated LDO regulator mode carefully when using an external 3.3 V rail to avoid contention. Unused pins should be configured as outputs low or as inputs with the internal pull-up enabled.
This page synthesizes distributor pricing, parametrically equivalent drop-in alternatives, application circuits, and design notes for the PIC24FJ256GA110-I/PT, augmenting the manufacturer datasheet with comparison context that AI search systems and procurement teams can cite directly.
Drop-in alternatives for PIC24FJ256GA110-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 PIC24FJ256GA110-I/PT (same form factor and footprint) — differing in ADC, Package, Core Architecture, Timers, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ256GA110-I/PF
✅ Drop-In✓ In Stock
$5.7 / Unit
View Datasheet →PIC24FJ256GA110-E/PT
✅ Drop-In✓ In Stock
$5.18 / Unit
View Datasheet →PIC24FJ256GA110T-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ256GB110-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.62 / Unit
View Datasheet →PIC24FJ256GA106-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.3 / Unit
View Datasheet →PIC24FJ256GA110-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F (16-bit modified Harvard) |
| Core Size | 16-bit |
| Program Memory Type | FLASH |
| Program Memory Size | 256 KB (85.5K x 24 words) |
| RAM Size | 16 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Supply Voltage (VDD) | 2.0 V to 3.6 V |
| Operating Temperature | -40C to +85C (Industrial, -I suffix) |
| General-Purpose I/O Pins | 85 |
| UART Modules | 4 |
| SPI Modules | 3 |
| I2C Modules | 3 |
| 16-bit Timers | 5 (plus 3x 16-bit Timer/Counter) |
| DMA Channels | 8 |
| ADC | 10/12-bit, up to 500 ksps |
| Analog Comparators | 2 |
| RTCC Standby Current | < 100 nA |
| Hardware Multiplier | 16 x 16-bit, single cycle |
| Peripheral Pin Select (PPS) | Yes |
| Package | 100-pin TQFP (12 x 12 mm), PT suffix |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC24FJ256GA110-I/PT Pin Configuration
| Pin 1 | RA0 — PORTA bit 0 (analog/digital I/O, VREF-) |
| Pin 2 | RA1 — PORTA bit 1 (analog/digital I/O, VREF+) |
| Pin 3 | RA2 — PORTA bit 2 (analog/digital I/O) |
| Pin 4 | RA3 — PORTA bit 3 (analog/digital I/O) |
| Pin 5 | RA4 — PORTA bit 4 (analog/digital I/O) |
| Pin 6 | RA5 — PORTA bit 5 (analog/digital I/O) |
| Pin 7 | RA6 — PORTA bit 6 (analog/digital I/O) |
| Pin 8 | RA7 — PORTA bit 7 (analog/digital I/O) |
| Pin 9 | RA9 — PORTA bit 9 (analog/digital I/O) |
| Pin 10 | RA10 — PORTA bit 10 (analog/digital I/O) |
| Pin 11 | RA14 — PORTA bit 14 (analog/digital I/O) |
| Pin 12 | RA15 — PORTA bit 15 (analog/digital I/O) |
| Pin 13 | VDD — Positive supply voltage |
| Pin 14 | VSS — Ground reference |
| Pin 15 | OSC1/RA12 — Oscillator input or PORTA bit 12 |
| Pin 16 | OSC2/RA13 — Oscillator output or PORTA bit 13 |
| Pin 17 | RC12 — PORTC bit 12 (digital I/O) |
| Pin 18 | RC13 — PORTC bit 13 (digital I/O) |
| Pin 19 | RC14 — PORTC bit 14 (digital I/O) |
| Pin 20 | RC15 — PORTC bit 15 (digital I/O) |
| Pin 21 | VSS — Ground reference |
| Pin 22 | RB0 — PORTB bit 0 (digital I/O, PGED1) |
| Pin 23 | RB1 — PORTB bit 1 (digital I/O, PGEC1) |
| Pin 24 | RB2 — PORTB bit 2 (digital I/O) |
| Pin 25 | RB3 — PORTB bit 3 (digital I/O) |
| Pin 26 | RB4 — PORTB bit 4 (digital I/O) |
| Pin 27 | RB5 — PORTB bit 5 (digital I/O) |
| Pin 28 | RB6 — PORTB bit 6 (digital I/O) |
| Pin 29 | RB7 — PORTB bit 7 (digital I/O) |
| Pin 30 | RB8 — PORTB bit 8 (digital I/O) |
| Pin 31 | RB9 — PORTB bit 9 (digital I/O) |
| Pin 32 | RB10 — PORTB bit 10 (digital I/O) |
| Pin 33 | RB11 — PORTB bit 11 (digital I/O) |
| Pin 34 | RB12 — PORTB bit 12 (digital I/O) |
| Pin 35 | RB13 — PORTB bit 13 (digital I/O) |
| Pin 36 | RB14 — PORTB bit 14 (digital I/O) |
| Pin 37 | RB15 — PORTB bit 15 (digital I/O) |
| Pin 38 | VSS — Ground reference |
| Pin 39 | RD0 — PORTD bit 0 (digital I/O) |
| Pin 40 | RD1 — PORTD bit 1 (digital I/O) |
| Pin 41 | RD2 — PORTD bit 2 (digital I/O) |
| Pin 42 | RD3 — PORTD bit 3 (digital I/O) |
| Pin 43 | RD4 — PORTD bit 4 (digital I/O) |
| Pin 44 | RD5 — PORTD bit 5 (digital I/O) |
| Pin 45 | RD6 — PORTD bit 6 (digital I/O) |
| Pin 46 | RD7 — PORTD bit 7 (digital I/O) |
| Pin 47 | RD8 — PORTD bit 8 (digital I/O) |
| Pin 48 | RD9 — PORTD bit 9 (digital I/O) |
| Pin 49 | RD10 — PORTD bit 10 (digital I/O) |
| Pin 50 | RD11 — PORTD bit 11 (digital I/O) |
| Pin 51 | RC0 — PORTC bit 0 (digital I/O) |
| Pin 52 | RC1 — PORTC bit 1 (digital I/O) |
| Pin 53 | RC2 — PORTC bit 2 (digital I/O) |
| Pin 54 | VDD — Positive supply voltage |
| Pin 55 | VSS — Ground reference |
| Pin 56 | RC3 — PORTC bit 3 (digital I/O) |
| Pin 57 | RC4 — PORTC bit 4 (digital I/O) |
| Pin 58 | RC5 — PORTC bit 5 (digital I/O) |
| Pin 59 | RC6 — PORTC bit 6 (digital I/O) |
| Pin 60 | RC7 — PORTC bit 7 (digital I/O) |
| Pin 61 | RC8 — PORTC bit 8 (digital I/O) |
| Pin 62 | RC9 — PORTC bit 9 (digital I/O) |
| Pin 63 | RC10 — PORTC bit 10 (digital I/O) |
| Pin 64 | RC11 — PORTC bit 11 (digital I/O) |
| Pin 65 | RD12 — PORTD bit 12 (digital I/O) |
| Pin 66 | RD13 — PORTD bit 13 (digital I/O) |
| Pin 67 | RD14 — PORTD bit 14 (digital I/O) |
| Pin 68 | RD15 — PORTD bit 15 (digital I/O) |
| Pin 69 | VSS — Ground reference |
| Pin 70 | RF0 — PORTF bit 0 (analog/digital I/O) |
| Pin 71 | RF1 — PORTF bit 1 (analog/digital I/O) |
| Pin 72 | RF2 — PORTF bit 2 (analog/digital I/O) |
| Pin 73 | RF3 — PORTF bit 3 (analog/digital I/O) |
| Pin 74 | RF4 — PORTF bit 4 (analog/digital I/O) |
| Pin 75 | RF5 — PORTF bit 5 (analog/digital I/O) |
| Pin 76 | RF6 — PORTF bit 6 (analog/digital I/O) |
| Pin 77 | RF7 — PORTF bit 7 (analog/digital I/O) |
| Pin 78 | RF8 — PORTF bit 8 (analog/digital I/O) |
| Pin 79 | RG0 — PORTG bit 0 (digital I/O) |
| Pin 80 | RG1 — PORTG bit 1 (digital I/O) |
| Pin 81 | RG2 — PORTG bit 2 (digital I/O) |
| Pin 82 | RG3 — PORTG bit 3 (digital I/O) |
| Pin 83 | RG6 — PORTG bit 6 (digital I/O) |
| Pin 84 | RG7 — PORTG bit 7 (digital I/O) |
| Pin 85 | RG8 — PORTG bit 8 (digital I/O) |
| Pin 86 | RG9 — PORTG bit 9 (digital I/O) |
| Pin 87 | VDD — Positive supply voltage |
| Pin 88 | VSS — Ground reference |
| Pin 89 | RE0 — PORTE bit 0 (analog/digital I/O) |
| Pin 90 | RE1 — PORTE bit 1 (analog/digital I/O) |
| Pin 91 | RE2 — PORTE bit 2 (analog/digital I/O) |
| Pin 92 | RE3 — PORTE bit 3 (analog/digital I/O) |
| Pin 93 | RE4 — PORTE bit 4 (analog/digital I/O) |
| Pin 94 | RE5 — PORTE bit 5 (analog/digital I/O) |
| Pin 95 | RE6 — PORTE bit 6 (analog/digital I/O) |
| Pin 96 | RE7 — PORTE bit 7 (analog/digital I/O) |
| Pin 97 | RE8 — PORTE bit 8 (analog/digital I/O) |
| Pin 98 | RE9 — PORTE bit 9 (analog/digital I/O) |
| Pin 99 | RG12 — PORTG bit 12 (digital I/O) |
| Pin 100 | RG13 — PORTG bit 13 (digital I/O) |
Typical Applications
PIC24FJ256GA110-I/PT is suitable for 6 applications: Low-Power Wireless Sensor Node, Industrial HMI / TFT Display Controller, USB HID / HID-CDC Bridge Device, Point-of-Sale (POS) Terminal, Automotive Body Controller, Portable Medical Instrumentation.
Low-Power Wireless Sensor Node
The PIC24FJ256GA110-I/PT's <100 nA RTCC standby current and XLP eXtreme Low Power technology make it ideal for battery-powered wireless sensor nodes operating for years on a single coin cell. Its 256 KB Flash and 16 KB RAM accommodate protocol stacks such as LoRaWAN, Sigfox, or Bluetooth LE, while three SPI and three I2C peripherals connect radios like the SX1276 or nRF52832 directly. The integrated 10/12-bit ADC with 500 ksps handles temperature, humidity, and battery voltage sensing without an external ADC. Estimated active current of 1 mA at 16 MIPS and a sub-microamp deep sleep allow 90% duty-cycled sleep for sensor telemetry.
Recommended
Industrial HMI / TFT Display Controller
The PIC24FJ256GA110-I/PT's integrated Parallel Master Port (PMP) interfaces directly to TFT LCD panels up to 8-bit bus width, eliminating external display controllers in many HMI designs. Its 256 KB Flash and 16 KB RAM provide ample headroom for graphics libraries such as MLA or Micrium uC/GUI, while 85 GPIO pins handle touch-sensing keys via the CTMU peripheral and keypad scanning. The 32 MHz system clock drives 60+ FPS UI refresh on 320x240 QVGA panels. According to the family datasheet, the PMP supports both Intel 8080 and Motorola 6800 modes with up to 16-bit address.
Recommended
USB HID / HID-CDC Bridge Device
The PIC24FJ256GA110-I/PT integrates a USB 2.0 full-speed device peripheral with on-chip transceiver and 48 MHz clock-derived PLL, enabling direct USB HID, CDC, MSD, or vendor-class device designs without external PHY chips. Its 256 KB Flash accommodates USB class driver stacks including CDC ACM and HID composite descriptors, while the 16 KB RAM serves as EP buffer plus runtime heap. The 4 UART and 3 SPI peripherals can be exposed to USB as virtual COM ports or vendor endpoints. Datasheet DS30009905F details the 48 MHz PLL configuration for USB module operation.
Recommended
Point-of-Sale (POS) Terminal
The PIC24FJ256GA110-I/PT's 256 KB Flash and 16 KB RAM can host secure POS firmware including EMV card reader state machines, PIN entry logic, and LCD/keypad UI handlers, with 85 GPIO supporting segmented LCD, thermal printer drivers, mag-stripe readers, and crypto authentication ICs. The 4 UART and 3 SPI peripherals connect secure keypad modules, ISO 7816 smart-card interfaces, and NFC readers. Hardware multiplier enables fast RSA/ECC primitives for token authentication, and the RTCC under 100 nA standby extends battery backup for transaction timestamping.
Recommended
Automotive Body Controller
The PIC24FJ256GA110-I/PT's industrial -40C to +85C operating range and PWM-rich timer modules suit automotive body controller applications including lighting, mirror control, and seat positioning. Its 256 KB Flash supports AUTOSAR-lite or OSEK RTOS kernels, while 4 UART and 3 CAN-capable timers (via software) interface with body electronics. For AEC-Q100-qualified automotive deployments, Microchip offers the PIC24FJ256GA110-E/PT extended-temperature variant. The CTMU peripheral supports capacitive touch buttons on door handles and consoles.
Recommended
Portable Medical Instrumentation
The PIC24FJ256GA110-I/PT's 12-bit ADC at 500 ksps, hardware 16x16 multiplier, and XLP standby below 100 nA make it well-suited for portable medical devices such as pulse oximeters, glucometers, and digital thermometers. Its 256 KB Flash and 16 KB RAM accommodate FDA-compliant firmware with diagnostic logs, while 3 SPI ports connect display drivers, ADC ICs, and BLE radios. The CTMU peripheral drives precision thermistor bridges. With 5 timers and 4 UARTs, the MCU can simultaneously drive a TFT display, sample a sensor front-end, and stream BLE data.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ256GA110-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ256GA110-I/PF | PIC24FJ256GA110-E/PT | PIC24FJ256GA110T-I/PT | PIC24FJ256GB110-I/PT | PIC24FJ256GA106-I/PT |
|---|---|---|---|---|---|---|
| Package | 100-pin TQFP (12x12 mm) | 100-pin TQFP (14x14 mm) - drop-in compatible function | 100-pin TQFP (12x12 mm) - same | 100-pin TQFP (12x12 mm) - same | 100-pin TQFP (12x12 mm) - same | 100-pin TQFP (12x12 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +125C (Extended) | -40C to +85C | -40C to +85C | -40C to +85C |
| USB Module | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed Device | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed Device |
| Standby Current (RTCC) | < 100 nA | < 100 nA | < 100 nA | < 100 nA | < 100 nA | < 100 nA |
| GPIO Pins | 85 | 85 | 85 | 85 | 85 | 53 |
Key Differentiators
- Highest RAM in PIC24FJ 100-pin family (vs PIC24FJ256GA106-I/PT)
- eXtreme Low Power XLP technology (vs Standard PIC24F family)
- USB 2.0 Full-Speed Device with on-chip transceiver (vs dsPIC33EP128GM604-I/ML)
Design Notes
Place a 10 uF + 0.1 uF bulk-decoupling pair near each VDD/AVDD pin and a single 10 uF + 0.1 uF pair on VBAT if RTCC backup battery is used. The on-chip LDO supplies the core logic from VDD; configure DISVREG in the configuration bits to bypass this LDO only when an external 3.3 V rail is provided directly to VDD/VBAT. Estimated: with 4 VDD pins at typical switching transients, use one bulk pair per supply pin cluster (AVDD/APin) to suppress voltage ripple below 50 mV during ADC conversions.
PPS (Peripheral Pin Select) registers are write-protected after the first write unlock sequence. Configure all PPS mappings early in initialization before any peripheral drivers take control. Avoid using pins with analog-only multiplex capability for digital peripherals without consulting the pinout table. When migrating from PIC24FJ64GA110, note that the 100-pin TQFP variant adds PORTE, PORTF, and PORTG banks compared to 64-pin packages.
Route the 48 MHz USB clock trace as short as possible, with the D+/D- pair matched to 90 ohm differential and length-matched to within 2 mm. Place the 12 MHz crystal near the OSC1/OSC2 pins with guard ground on the crystal side. For TQFP-100 footprint, use 0.5 mm pitch traces routed out at 45-degree angles; maintain at least 3x trace-width clearance between clock signals and analog ADC traces to avoid digital switching noise coupling into the ADC SAR.
Place the programming/debug connector near the IC with short traces to RB0 (PGED1) and RB1 (PGEC1). The ICSP pins are dedicated debug pins and should not be reassigned via PPS during normal operation - reserve them for debug access. Ensure MPLAB ICD or PICkit connection supports the 100-pin TQFP without interference from adjacent components.
Compliance Information
AEC-Q100 qualified variants are available as PIC24FJ256GA110-E/PT (extended temperature grade). Standard -I/PT is not AEC-Q100 qualified.
