PIC24FJ128GA110T-I/PF - 16-Bit MCU, 128KB Flash, 100-TQFP | Microchip
MPN: PIC24FJ128GA110T-I/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.42 | $9.42 |
| 10 | $8.71 | $87.10 |
| 100 | $7.55 | $755.00 |
| 500 | $6.62 | $3,310.00 |
| 1,000 | $5.93 | $5,930.00 |
PIC24FJ128GA110T-I/PF Overview
A 16-bit microcontroller (MCU) is a microprocessor core with a 16-bit data path and instruction set, sitting in the hierarchy between 8-bit MCUs (such as the PIC16 family) and 32-bit MCUs (such as PIC32 or ARM Cortex-M). The PIC24F family in particular uses a modified Harvard RISC architecture with hardware multiply/divide and is aimed at low-power, mixed-signal applications such as industrial control, sensor hubs, and Human Interface Devices (HID). Compared with 8-bit cores, 16-bit cores offer higher code density, larger linear memory maps, and richer peripheral integration while retaining deterministic interrupt response.
Key features of the PIC24FJ128GA110 include <100 nA standby current for battery-backed designs, hardware Real-Time Clock/Calendar (RTCC) with self-contained power domain, up to 85 I/O pins with 5V-tolerant inputs, 16-channel 10-bit ADC with 500 ksps conversion rate, and CTMU support for capacitive touch. The device operates from 2.0V to 3.6V across an industrial -40C to +85C temperature range and supports Microchip's nanoWatt XLP power-saving modes (Sleep, Deep Sleep, VBAT).
At the silicon level, the PIC24FJ128GA110 uses a flash-friendly CMOS process with on-chip voltage regulation that keeps the core running while I/O ports operate at higher voltages, eliminating the need for external level shifters in 5V-tolerant scenarios. The architecture combines a 16-bit ALU with a 24-bit instruction word for compact, orthogonal C-compiled code, and the integrated DMA controller offloads data movement from the CPU to peripheral endpoints such as the UART, SPI, ADC, and PMP.
Typical applications include industrial sensor interfaces, USB HID/CDC devices (when paired with an external transceiver), home automation controllers, low-power wireless sensor nodes, and battery-backed data loggers. The 100-pin TQFP package also gives designers enough I/O for parallel TFT displays, PMP/EPMP bus interfaces, and multi-UART gateway bridges.
When designing with this part, note that the PIC24FJ128GA110T-I/PF is the TQFP-packaged tape-and-reel variant, while the PIC24FJ128GA110-I/PF (tray) is identical silicon; choose the reel suffix for SMT assembly. Plan VBAT retention current carefully and add proper decoupling (100 nF + bulk) on each VDD/VSS pin pair to avoid noise-induced RTCC drift.
This page synthesizes distributor pricing for the 100-TQFP reel variant, drop-in TQFP-100 alternatives (PIC24FJ128GA110-I/PF, PIC24FJ128GA010-I/PF), and practical PCB layout notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for PIC24FJ128GA110T-I/PF — 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 PIC24FJ128GA110T-I/PF (same form factor and footprint) — differing in ADC, Package, Operating Temperature, Core Architecture, MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ128GA110-I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ128GA110-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.1 / Unit
View Datasheet →PIC24FJ128GA010-I/PF
✅ Drop-In✓ In Stock
$8.95 / Unit
View Datasheet →PIC24FJ128GA108-E/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$5.4 / Unit
View Datasheet →PIC24FJ128DA110T-I/BG
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.55 / Unit
View Datasheet →PIC24FJ128GA110T-I/PF Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit PIC24F (modified Harvard RISC) |
| Family | PIC24FJ eXtreme Low Power (XLP) |
| Program Memory (Flash) | 128 KB (43K x 24 words) |
| RAM | 16 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS at 3.3V) |
| Operating Voltage | 2.0 V to 3.6 V |
| Package | 100-TQFP (14 x 14 mm) |
| I/O Pins | Up to 85 |
| UART | 4 |
| SPI | 3 |
| I2C | 3 |
| Timers | 16/32-bit, 23 independent |
| ADC | 10-bit, 16-channel, 500 ksps |
| RTCC | Yes (hardware, with VBAT) |
| CTMU (Capacitive Touch) | Yes |
| DMA | 8-channel |
| Standby Current | <100 nA (XLP Sleep) |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Mounting Type | Surface Mount (TQFP) |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
PIC24FJ128GA110T-I/PF Pin Configuration
| Pin 1 | RP15/PMA0/CN11/RB15 — Remappable I/O, PMP address bit 0 |
| Pin 2 | RP14/PMA1/CN10/RB14 — Remappable I/O, PMP address bit 1 |
| Pin 3 | RP13/PMA2/CN9/RB13 — Remappable I/O, PMP address bit 2 |
| Pin 4 | RP12/PMA3/CN8/RB12 — Remappable I/O, PMP address bit 3 |
| Pin 5 | RP11/PMA4/CN7/RB11 — Remappable I/O, PMP address bit 4 |
| Pin 6 | RP10/PMA5/CN6/RB10 — Remappable I/O, PMP address bit 5 |
| Pin 7 | RP9/PMA6/CN5/RB9 — Remappable I/O, PMP address bit 6 |
| Pin 8 | RP8/PMA7/CN4/RB8 — Remappable I/O, PMP address bit 7 |
| Pin 9 | RP7/PMD7/CN3/RB7 — Remappable I/O, PMP data bit 7 |
| Pin 10 | RP6/PMD6/CN2/RB6 — Remappable I/O, PMP data bit 6 |
| Pin 11 | RP5/PMD5/CN1/RB5 — Remappable I/O, PMP data bit 5 |
| Pin 12 | RP4/PMD4/CN0/RB4 — Remappable I/O, PMP data bit 4 |
| Pin 13 | RP3/PMD3/RB3 — Remappable I/O, PMP data bit 3 |
| Pin 14 | RP2/PMD2/RB2 — Remappable I/O, PMP data bit 2 |
| Pin 15 | RP1/PMD1/RB1 — Remappable I/O, PMP data bit 1 |
| Pin 16 | RP0/PMD0/RB0 — Remappable I/O, PMP data bit 0 |
| Pin 17 | VSS — Ground reference |
| Pin 18 | VDD — Positive supply (2.0V-3.6V) |
| Pin 19 | RD9 — Remappable I/O port D bit 9 |
| Pin 20 | RD10 — Remappable I/O port D bit 10 |
| Pin 21 | RD11 — Remappable I/O port D bit 11 |
| Pin 22 | RD12 — Remappable I/O port D bit 12 |
| Pin 23 | RD13 — Remappable I/O port D bit 13 |
| Pin 24 | RD14 — Remappable I/O port D bit 14 |
| Pin 25 | RD15 — Remappable I/O port D bit 15 |
| Pin 26 | RC1/T2CK — Remappable I/O, Timer2 clock input |
| Pin 27 | RC2/T3CK — Remappable I/O, Timer3 clock input |
| Pin 28 | RC3/T4CK — Remappable I/O, Timer4 clock input |
| Pin 29 | RC4 — Remappable I/O port C bit 4 |
| Pin 30 | INT0/RF6 — External interrupt 0 / port F bit 6 |
| Pin 31 | RF7 — Port F bit 7 |
| Pin 32 | RF8 — Port F bit 8 |
| Pin 33 | RF3 — Port F bit 3 |
| Pin 34 | RF2 — Port F bit 2 |
| Pin 35 | RF5 — Port F bit 5 |
| Pin 36 | RF4 — Port F bit 4 |
| Pin 37 | RF1 — Port F bit 1 |
| Pin 38 | RF0 — Port F bit 0 |
| Pin 39 | VSS — Ground reference |
| Pin 40 | OSC1/CLKI/RA1 — Oscillator crystal input / port A bit 1 |
| Pin 41 | OSC2/CLKO/RA2 — Oscillator crystal output / port A bit 2 |
| Pin 42 | RA3 — Port A bit 3 |
| Pin 43 | RA4 — Port A bit 4 |
| Pin 44 | RA5 — Port A bit 5 |
| Pin 45 | VDD — Positive supply (2.0V-3.6V) |
| Pin 46 | RA7 — Port A bit 7 |
| Pin 47 | RA9 — Port A bit 9 |
| Pin 48 | RA10 — Port A bit 10 |
| Pin 49 | RA11 — Port A bit 11 |
| Pin 50 | RA12 — Port A bit 12 |
| Pin 51 | RA13 — Port A bit 13 |
| Pin 52 | RA14 — Port A bit 14 |
| Pin 53 | RA15 — Port A bit 15 |
| Pin 54 | VSS — Ground reference |
| Pin 55 | RG3 — Port G bit 3 |
| Pin 56 | RG2 — Port G bit 2 |
| Pin 57 | RG1 — Port G bit 1 |
| Pin 58 | RG0 — Port G bit 0 |
| Pin 59 | RG6 — Port G bit 6 |
| Pin 60 | RG7 — Port G bit 7 |
| Pin 61 | RG8 — Port G bit 8 |
| Pin 62 | RG9 — Port G bit 9 |
| Pin 63 | MCLR — Master Clear (reset) input |
| Pin 64 | RG15 — Port G bit 15 |
| Pin 65 | VDD — Positive supply (2.0V-3.6V) |
| Pin 66 | AVDD — Analog positive supply |
| Pin 67 | AVSS — Analog ground reference |
| Pin 68 | AN0/RA0 — Analog input 0 / port A bit 0 |
| Pin 69 | AN1/RA1 — Analog input 1 / port A bit 1 |
| Pin 70 | AN2/RA2 — Analog input 2 / port A bit 2 |
| Pin 71 | AN3/RA3 — Analog input 3 / port A bit 3 |
| Pin 72 | AN4/RA4 — Analog input 4 / port A bit 4 |
| Pin 73 | AN5/RA5 — Analog input 5 / port A bit 5 |
| Pin 74 | AN6/RA6 — Analog input 6 / port A bit 6 |
| Pin 75 | AN7/RA7 — Analog input 7 / port A bit 7 |
| Pin 76 | AN8/RB0 — Analog input 8 / port B bit 0 |
| Pin 77 | AN9/RB1 — Analog input 9 / port B bit 1 |
| Pin 78 | AN10/RB2 — Analog input 10 / port B bit 2 |
| Pin 79 | AN11/RB3 — Analog input 11 / port B bit 3 |
| Pin 80 | AN12/RB4 — Analog input 12 / port B bit 4 |
| Pin 81 | AN13/RB5 — Analog input 13 / port B bit 5 |
| Pin 82 | AN14/RB6 — Analog input 14 / port B bit 6 |
| Pin 83 | AN15/RB7 — Analog input 15 / port B bit 7 |
| Pin 84 | VREF+/CVREF+/AN23/RC0 — Voltage reference positive / comparator ref |
| Pin 85 | VREF-/CVREF-/AN22/RC1 — Voltage reference negative / comparator ref |
| Pin 86 | SDA3/RA14 — I2C3 data / port A bit 14 |
| Pin 87 | SCL3/RA15 — I2C3 clock / port A bit 15 |
| Pin 88 | SOSCI/RA0 — Secondary oscillator crystal input |
| Pin 89 | SOSCO/T1CK/CN0/RA1 — Secondary oscillator crystal output / Timer1 input |
| Pin 90 | RTCC/RA2 — Real-Time Clock output / port A bit 2 |
| Pin 91 | VBAT — RTCC backup battery supply input |
| Pin 92 | VSS — Ground reference |
| Pin 93 | RC2 — Port C bit 2 |
| Pin 94 | RC3 — Port C bit 3 |
| Pin 95 | RC4 — Port C bit 4 |
| Pin 96 | RC5 — Port C bit 5 |
| Pin 97 | RC6 — Port C bit 6 |
| Pin 98 | RC7 — Port C bit 7 |
| Pin 99 | RC8 — Port C bit 8 |
| Pin 100 | RC9 — Port C bit 9 |
Typical Applications
PIC24FJ128GA110T-I/PF is suitable for 6 applications: Industrial Sensor Interface Hub, USB HID / CDC Device Controller, Low-Power Wireless Sensor Node, Battery-Backed Data Logger, Home Automation Gateway Bridge, Human-Machine Interface (HMI) Display Controller.
Industrial Sensor Interface Hub
The PIC24FJ128GA110T-I/PF is well suited as an industrial sensor hub because its 16 MIPS throughput and 16 KB RAM can host Modbus RTU master stacks while servicing multiple SPI/I2C sensor front-ends simultaneously. The 4x UARTs handle RS-485/RS-232 transceiver links to PLCs, while the 16-channel 10-bit ADC aggregates analog transducers at up to 500 ksps. Its 2.0-3.6V supply range tolerates industrial 24V bus rails after a simple buck regulator, and XLP Sleep at <100 nA preserves battery backup during brownouts. Designers benefit from the 100-TQFP package, which exposes enough I/O for parallel keypad input plus 4-digit LED/LCD status displays without needing a second MCU.
Recommended
USB HID / CDC Device Controller
The PIC24FJ128GA110T-I/PF's 32 MHz core, 16 KB RAM, and four UARTs make it an excellent host for USB Human Interface Device or Communications Device Class firmware when paired with an external USB transceiver. The 128 KB Flash holds full USB stacks and custom HID report descriptors, while DMA offloads endpoint buffer management from the CPU for sustained throughput. The 5V-tolerant I/O simplifies co-existence with legacy USB bus-powered peripherals, and the 100-TQFP exposes dedicated PMP/EPMP bus pins if external parallel USB host silicon is added. XLP Sleep reduces standby current when the device is bus-suspended, meeting USB suspend current requirements.
Recommended
Low-Power Wireless Sensor Node
The PIC24FJ128GA110T-I/PF integrates well as the host MCU for sub-GHz or 2.4 GHz wireless sensor nodes, where its <100 nA XLP Sleep current dominates battery life. With RTCC ticking from a VBAT coin cell, the node can wake on a timer or external interrupt, sample a sensor over SPI/I2C, transmit via a paired radio, and return to sleep within milliseconds. The 16 KB RAM buffers transient burst data, and the 128 KB Flash holds OTA-capable application images with dual-partition firmware updates. Industrial -40 to +85 C operation covers outdoor and HVAC environments.
Recommended
Battery-Backed Data Logger
With RTCC, VBAT domain, and 16 KB RAM, the PIC24FJ128GA110T-I/PF forms the core of a battery-backed data logger for medical or environmental recording. The integrated 10-bit ADC captures analog channels at 500 ksps, while DMA streams conversions into RAM without CPU intervention. Flash can be partitioned for circular logging with wear-leveling, and XLP Sleep preserves coin-cell life for years between maintenance cycles. The 100-TQFP package also supports 4-wire SPI or SD card interfaces for removable storage expansion.
Recommended
Home Automation Gateway Bridge
The PIC24FJ128GA110T-I/PF works well as a multi-UART home automation gateway bridging Zigbee, Z-Wave, or Wi-Fi modules to a local RS-485 bus. Four UARTs let designers connect multiple wireless co-processors in parallel, while 3x I2C and 3x SPI handle sensor inputs and display panels. The 128 KB Flash fits full HomeKit/Matter bridge stacks, and CTMU capacitive touch inputs eliminate mechanical buttons on wall controllers. Wide 2.0-3.6V operation accepts regulated 3.3V from USB or PoE-derived supplies.
Recommended
Human-Machine Interface (HMI) Display Controller
For HMI panels with TFT or segment LCD, the PIC24FJ128GA110T-I/PF's PMP/EPMP parallel bus and CTMU touch inputs offer a single-chip controller solution. The 100-TQFP exposes enough pins for an 8-bit PMP bus plus dedicated control lines driving 320x240 TFTs without external bridge logic. The 16 MIPS throughput handles button debouncing, on-screen menu navigation, and serial command parsing concurrently. CTMU scans capacitive keypads without additional ICs, reducing BOM cost for appliance and instrument front panels.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ128GA110T-I/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ128GA110-I/PF | PIC24FJ128GA110-I/PT | PIC24FJ128GA010-I/PF |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) | 100-TQFP (12x12 mm) | 100-TQFP (14x14 mm) |
| Program Memory (Flash) | 128 KB | 128 KB | 128 KB | 128 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB |
| Maximum CPU Clock | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 16 MHz (16 MIPS) |
| 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 |
| UART Count | 4 | 4 | 4 | 4 |
| ADC Channels | 16 x 10-bit | 16 x 10-bit | 16 x 10-bit | 16 x 10-bit |
| Standby Current | <100 nA (XLP) | <100 nA (XLP) | <100 nA (XLP) | <100 nA (XLP) |
Key Differentiators
- Tape-and-reel carrier for SMT production (vs PIC24FJ128GA110-I/PF)
- 32 MHz full-speed execution vs 16 MHz (vs PIC24FJ128GA010-I/PF)
- eXtreme Low Power XLP standby at <100 nA (vs PIC24FJ128DA110T-I/BG)
Design Notes
The PIC24FJ128GA110T-I/PF integrates multiple VDD/VSS pin pairs (pins 18, 45, 65 for VDD; 17, 39, 54, 92 for VSS) plus a dedicated AVDD/AVSS pair on pins 66/67. Place a 100 nF decoupling capacitor within 5 mm of each VDD pin and a single 10 uF bulk capacitor near the package. For analog accuracy on ADC inputs, isolate AVDD with a ferrite bead or 10 ohm resistor from digital VDD, and decouple AVSS directly to the ground plane. The VBAT pin (91) requires its own 100 nF cap plus a series Schottky diode to the main 3.3V rail to prevent back-feed during normal operation.
Estimated: the MCLR pin (63) is bidirectional on PIC24F parts - if left unconnected it can drift into reset under noisy conditions. Tie MCLR to VDD through a 10 kohm pull-up and a 100 nF decoupling cap, or use the internal MCLR disable configuration if not using an external reset supervisor. Additionally, JTAG/PGDx pins must be left in their default high-impedance state during reset or the part may fail to enter ICSP mode. Use the CONFIG register bits to disable JTAG if not needed to free pins for GPIO.
The 100-TQFP has a 0.5 mm pitch and 14x14 mm body. Recommended land pattern follows IPC-7351 nominal density with 0.30 mm pad width and 0.45 mm pad length. Route the outer 85 I/O signals on the top layer with 0.15 mm trace/spacing to escape cleanly between TQFP pads; use inner layers for power and ground. Place the 32.768 kHz crystal (SOSCI/SOSCO, pins 88/89) within 5 mm of the package and guard the traces with a ground ring to avoid coupling digital noise into the RTCC domain.
Compliance Information
RoHS and lead-free per Microchip product page. Not AEC-Q100 qualified; for automotive designs use PIC24FJ series qualified parts. Conflict-minerals compliance per Microchip CMRT filings.
