PIC24FJ64GB110T-I/PT - 16-bit 64KB Flash USB OTG MCU | Microchip
MPN: PIC24FJ64GB110T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.4 | $5.40 |
| 10 | $4.95 | $49.50 |
| 100 | $4.45 | $445.00 |
| 500 | $3.85 | $1,925.00 |
| 1,000 | $3.45 | $3,450.00 |
PIC24FJ64GB110T-I/PT Overview
A PIC microcontroller (MCU) is a compact, low-power programmable processor built on Harvard architecture, integrating CPU core, Flash program memory, RAM, and peripherals onto a single silicon die. PIC24F devices are 16-bit variants optimized for low-power (<100 nA standby) and connectivity-rich applications, sitting between the 8-bit PIC16/PIC18 families and 32-bit PIC32MX devices in Microchip's portfolio. They are widely deployed in embedded systems requiring USB connectivity, mixed-signal I/O, and deterministic real-time performance.
Key features include a modified Harvard architecture with 17-bit single-cycle hardware multiplier and 16-bit hardware divider, an 8 MHz internal oscillator with 4x PLL option and multiple divide options, and a C-compiler-optimized instruction set. The part supports a wide operating voltage range and integrates peripherals suited for USB device, host, and OTG roles without external PHY circuitry. Its 16-bit working register array enables efficient C code generation, while the dedicated USB OTG module eliminates the need for companion interface chips.
Typical applications include USB peripherals such as HID-class devices, human-interface devices, point-of-sale terminals, and consumer electronics requiring embedded host capability. The combination of low standby current, ample RAM buffering, and multiple serial channels also makes it suitable for industrial sensor hubs, data loggers, and battery-powered IoT bridges. Industrial-grade temperature rating supports silicon design through the -40C to +85C range, while the 100-pin TQFP provides generous I/O headroom.
When designing with this device, ensure that the USB OTG pin configuration matches the target role (device, host, or OTG) and that decoupling capacitors are placed close to the VDD/VSS pairs. The TQFP-100 footprint allows easy routing on 2-layer PCBs but a 4-layer stack-up with a dedicated ground plane is recommended for USB signal-integrity compliance.
This page synthesizes distributor pricing, drop-in PIC24F alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC24FJ64GB110T-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 PIC24FJ64GB110T-I/PT (same form factor and footprint) — differing in Package, Timers, Core Architecture, Operating Temperature, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GB110-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ128GB110-I/PT
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →PIC24FJ192GB110T-I/PT
✅ Drop-In✓ In Stock
$5.42 / Unit
View Datasheet →PIC24FJ64GA110T-I/PT
✅ Drop-In✓ In Stock
$3.4 / Unit
View Datasheet →PIC24FJ256GB110-I/PT
✅ Drop-In✓ In Stock
$5.62 / Unit
View Datasheet →PIC24FJ64GB106T-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.86 / Unit
View Datasheet →PIC24FJ64GB110T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC 16-bit (Modified Harvard) |
| Program Memory (Flash) | 64 KB (22K x 24) |
| RAM | 16 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage | 2.0 V to 3.6 V |
| Supply Voltage (DC) | 2.0 V (min) |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 100-pin TQFP (PT) 12x12 mm |
| Mounting Type | Surface Mount |
| USB Peripheral | USB On-The-Go (OTG), Full-Speed |
| I2C Interfaces | 3 |
| SPI Interfaces | 3 |
| UART Interfaces | 4 |
| Timers | 23 independent timers |
| Internal Oscillator | 8 MHz with 4x PLL option |
| Hardware Multiplier | 17-bit single-cycle |
| Hardware Divider | 16-bit |
| RoHS Status | Compliant |
PIC24FJ64GB110T-I/PT Pin Configuration
| Pin 1 | RP15/CN15/PMD15/OCFA/RB15 — I/O port / remappable peripheral |
| Pin 2 | RP14/CN14/PMD14/RB14 — I/O port / remappable peripheral |
| Pin 3 | RP13/CN13/PMD13/RB13 — I/O port / remappable peripheral |
| Pin 4 | RP12/CN12/PMD12/RB12 — I/O port / remappable peripheral |
| Pin 5 | RP11/CN11/PMD11/RB11 — I/O port / remappable peripheral |
| Pin 6 | RP10/CN10/PMD10/RB10 — I/O port / remappable peripheral |
| Pin 7 | RP9/CN9/PMD9/RB9 — I/O port / remappable peripheral |
| Pin 8 | RP8/CN8/PMD8/RB8 — I/O port / remappable peripheral |
| Pin 9 | RP7/CN7/PMD7/RB7 — I/O port / remappable peripheral |
| Pin 10 | RP6/CN6/PMD6/OC6/RB6 — I/O port / remappable peripheral |
| Pin 11 | RP5/CN5/PMD5/OC5/RB5 — I/O port / remappable peripheral |
| Pin 12 | RP4/CN4/PMD4/OC4/RB4 — I/O port / remappable peripheral |
| Pin 13 | RP3/CN3/PMD3/OC3/RB3 — I/O port / remappable peripheral |
| Pin 14 | RP2/CN2/PMD2/OC2/RB2 — I/O port / remappable peripheral |
| Pin 15 | RP1/CN1/PMD1/OC1/RB1 — I/O port / remappable peripheral |
| Pin 16 | RP0/CN0/PMD0/OC0/RB0 — I/O port / remappable peripheral |
| Pin 17 | VSS — Ground reference |
| Pin 18 | VDD — Positive supply voltage |
| Pin 19 | OSC1/CLKI/RA0 — Oscillator input / I/O port |
| Pin 20 | OSC2/CLKO/RA1 — Oscillator output / I/O port |
| Pin 21 | RA2 — I/O port |
| Pin 22 | RA3 — I/O port |
| Pin 23 | RA4 — I/O port |
| Pin 24 | RA5 — I/O port |
| Pin 25 | RA6 — I/O port |
| Pin 26 | RA7 — I/O port |
| Pin 27 | RA8 — I/O port |
| Pin 28 | RA9 — I/O port |
| Pin 29 | RA10 — I/O port |
| Pin 30 | VSS — Ground reference |
| Pin 31 | VDD — Positive supply voltage |
| Pin 32 | RC0 — I/O port |
| Pin 33 | RC1 — I/O port |
| Pin 34 | RC2 — I/O port |
| Pin 35 | RC3 — I/O port |
| Pin 36 | RC4 — I/O port |
| Pin 37 | RC5 — I/O port |
| Pin 38 | RC6 — I/O port |
| Pin 39 | RC7 — I/O port |
| Pin 40 | RC8 — I/O port |
| Pin 41 | RC9 — I/O port |
| Pin 42 | RD0 — I/O port |
| Pin 43 | RD1 — I/O port |
| Pin 44 | RD2 — I/O port |
| Pin 45 | RD3 — I/O port |
| Pin 46 | RD4 — I/O port |
| Pin 47 | RD5 — I/O port |
| Pin 48 | RD6 — I/O port |
| Pin 49 | RD7 — I/O port |
| Pin 50 | RD8 — I/O port |
| Pin 51 | RD9 — I/O port |
| Pin 52 | RD10 — I/O port |
| Pin 53 | RD11 — I/O port |
| Pin 54 | VSS — Ground reference |
| Pin 55 | VDD — Positive supply voltage |
| Pin 56 | RD12 — I/O port |
| Pin 57 | RD13 — I/O port |
| Pin 58 | RD14 — I/O port |
| Pin 59 | RD15 — I/O port |
| Pin 60 | RE0 — I/O port |
| Pin 61 | RE1 — I/O port |
| Pin 62 | RE2 — I/O port |
| Pin 63 | RE3 — I/O port |
| Pin 64 | RE4 — I/O port |
| Pin 65 | RE5 — I/O port |
| Pin 66 | RE6 — I/O port |
| Pin 67 | RE7 — I/O port |
| Pin 68 | RF0 — I/O port |
| Pin 69 | RF1 — I/O port |
| Pin 70 | RF2 — I/O port |
| Pin 71 | RF3 — I/O port |
| Pin 72 | RF4 — I/O port |
| Pin 73 | RF5 — I/O port |
| Pin 74 | RF6 — I/O port |
| Pin 75 | RF7 — I/O port |
| Pin 76 | RG0 — I/O port |
| Pin 77 | RG1 — I/O port |
| Pin 78 | RG2 — I/O port |
| Pin 79 | RG3 — I/O port |
| Pin 80 | VSS — Ground reference |
| Pin 81 | VDD — Positive supply voltage |
| Pin 82 | RG6 — I/O port |
| Pin 83 | RG7 — I/O port |
| Pin 84 | RG8 — I/O port |
| Pin 85 | RG9 — I/O port |
| Pin 86 | RG10 — I/O port |
| Pin 87 | RG11 — I/O port |
| Pin 88 | RG12 — I/O port |
| Pin 89 | RG13 — I/O port |
| Pin 90 | RG14 — I/O port |
| Pin 91 | RG15 — I/O port |
| Pin 92 | D+/RG2 — USB D+ (shared with RG2 on some variants) |
| Pin 93 | D-/RG3 — USB D- (shared with RG3 on some variants) |
| Pin 94 | VBUS — USB VBUS sense input |
| Pin 95 | VUSB — USB transceiver supply |
| Pin 96 | MCLR — Master clear / reset input |
| Pin 97 | PGED2/AN6/RC0 — ICSP data / analog / I/O |
| Pin 98 | PGEC2/AN7/RC1 — ICSP clock / analog / I/O |
| Pin 99 | PGED1/AN8/RC2 — ICSP data / analog / I/O |
| Pin 100 | PGEC1/AN9/RC3 — ICSP clock / analog / I/O |
Typical Applications
PIC24FJ64GB110T-I/PT is suitable for 6 applications: USB HID Peripherals (Keyboard, Mouse, Custom HID), USB Host Devices (Flash Drive Readers, Point-of-Sale), Industrial Sensor Hubs with USB Logging, Battery-Powered IoT Bridges (USB-C Charging + Sensor Uplink), Consumer Audio USB Accessories (Headset Dongles, MIDI), Medical Device Data Loggers (USB Offload to PC).
USB HID Peripherals (Keyboard, Mouse, Custom HID)
The PIC24FJ64GB110T-I/PT fits USB HID applications because it integrates a full-speed USB OTG controller and 16 KB of RAM - sufficient to buffer HID reports without external memory. The 16 MIPS performance from the 32 MHz core handles HID class drivers plus application logic concurrently. Placed on the device side of a USB cable with the on-chip transceiver driving D+/D- lines, it eliminates external PHY cost. Compared to a discrete MCU + FTDI bridge solution, the integrated approach saves PCB area and BOM cost.
Recommended
USB Host Devices (Flash Drive Readers, Point-of-Sale)
The PIC24FJ64GB110T-I/PT supports USB host mode via its OTG controller, enabling embedded products to read/write USB mass-storage devices without a companion host processor. The 64 KB Flash holds FAT file-system stacks (e.g., Microchip's MDD library) plus application firmware, while the 16 KB RAM provides sector-buffer space. Operating from 2.0 V to 3.6 V allows direct Li-ion battery powering for portable POS terminals. Designers should add a USB power-switch IC for VBUS current limiting.
Recommended
Industrial Sensor Hubs with USB Logging
The PIC24FJ64GB110T-I/PT fits industrial sensor hubs because it combines 3x I2C, 3x SPI, and 4x UART interfaces - sufficient for multi-sensor aggregation - with USB OTG for data offload. The industrial temperature rating (-40C to +85C) supports factory-floor deployment. Operating at 32 MHz delivers deterministic real-time response for control loops while the USB port streams logs to a host PC. Add a USB isolator for galvanic isolation in high-noise industrial environments.
Recommended
Battery-Powered IoT Bridges (USB-C Charging + Sensor Uplink)
The PIC24FJ64GB110T-I/PT suits battery-powered IoT bridges because the PIC24F family's <100 nA standby current extends battery life, while the integrated USB OTG handles both charging and data on a single USB-C connector. The 16 KB RAM buffers sensor data between acquisition events and USB transfers. At 32 MHz the core handles BLE pass-through firmware (via UART to a companion BLE module) plus USB CDC enumeration concurrently. Pair with a Li-ion charger IC and a high-efficiency LDO for the 3.3 V rail.
Recommended
Consumer Audio USB Accessories (Headset Dongles, MIDI)
The PIC24FJ64GB110T-I/PT works well in consumer audio USB accessories because the USB OTG controller supports USB Audio class 1.0 device operation, while the 32 MHz core processes MIDI messages or audio control commands with low latency. The 64 KB Flash fits USB Audio class descriptors plus vendor-specific extensions. For USB headset dongles, add a companion audio codec (e.g., Microchip's WM8904) on the I2S bus. The TQFP-100 footprint allows compact PCB designs.
Recommended
Medical Device Data Loggers (USB Offload to PC)
The PIC24FJ64GB110T-I/PT fits medical data loggers because it integrates USB device mode for patient-data offload to a clinician's PC, while the 16 KB RAM buffers samples between acquisition cycles. The industrial temperature rating supports clinical environments. Operating from 2.0 V to 3.6 V enables direct coin-cell or Li-Po battery power for portable monitors. Add a real-time clock (e.g., MCP79410) on I2C for timestamped logs and comply with IEC 60601-1 for medical EMC.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GB110T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GB110-I/PT | PIC24FJ128GB110-I/PT | PIC24FJ192GB110T-I/PT | PIC24FJ64GA110T-I/PT | PIC24FJ256GB110-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-100 (PT) | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same |
| Flash Memory | 64 KB | 64 KB (same) | 128 KB (+100%) | 192 KB (+200%) | 64 KB (same) | 256 KB (+300%) |
| RAM | 16 KB | 16 KB (same) | 16 KB (same) | 16 KB (same) | 16 KB (same) | 16 KB (same) |
| USB OTG | Yes (integrated) | Yes (same) | Yes (same) | Yes (same) | No (no USB) | Yes (same) |
| Maximum Frequency | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS (same) | 32 MHz / 16 MIPS (same) | 32 MHz / 16 MIPS (same) | 32 MHz / 16 MIPS (same) | 32 MHz / 16 MIPS (same) |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V (same) | 2.0 V to 3.6 V (same) | 2.0 V to 3.6 V (same) | 2.0 V to 3.6 V (same) | 2.0 V to 3.6 V (same) |
| Operating Temperature | -40C to +85C | -40C to +85C (same) | -40C to +85C (same) | -40C to +85C (same) | -40C to +85C (same) | -40C to +85C (same) |
| I/O Count (approx.) | 85 | 85 (same) | 85 (same) | 85 (same) | 85 (same) | 85 (same) |
Key Differentiators
- Integrated USB OTG with on-chip transceiver (vs PIC24FJ64GA110T-I/PT)
- Triple Flash headroom via same-family upgrade path (vs PIC24FJ64GB110-I/PT)
- Best-in-class RAM for USB buffer handling (vs PIC24FJ64GP205-I/PT)
Design Notes
The PIC24FJ64GB110T-I/PT operates from 2.0 V to 3.6 V and draws <100 nA in standby mode. Place a 100 nF decoupling capacitor within 5 mm of each VDD/VSS pin pair (the TQFP-100 has multiple VDD/VSS pairs distributed across the package). Add a 4.7 uF bulk capacitor on the main 3.3 V rail. For USB applications, the VUSB pin requires its own 100 nF decoupling capacitor plus a ferrite bead on the VUSB-to-VDD path per Microchip datasheet recommendations.
For USB Full-Speed signal integrity on the TQFP-100 PCB, route the D+ and D- traces as a 90-ohm differential pair with length matching to within 2 mm. Place the 15 kohm pull-down resistor on D- (for full-speed device) as close to the MCU pin as possible. Use a 4-layer PCB with a continuous ground plane beneath the USB traces. The USB connector shield should be tied to chassis ground through a ferrite bead and 4.7 nF cap to meet ESD and EMI requirements.
Estimated: The TQFP-100 package has a thermal pad behavior dependent on PCB copper area; with the standard 2 oz copper pour connected to VSS pins, theta_JA is approximately 40-50 C/W. For designs operating near maximum 32 MHz and high I/O toggle rates, provide at least 1 square inch of ground copper. Keep the 32 MHz crystal traces short (under 10 mm) and guard them with a ground ring to reduce EMI radiation.
Do not leave the MCLR pin floating - it requires a 10 kohm pull-up to VDD for normal operation. The USB D+ pin must have a software-controlled 1.5 kohm pull-up to 3.3 V for device mode enumeration; this is enabled by the USB module configuration bits, not an external resistor. When migrating from PIC24FJ64GA110 to PIC24FJ64GB110, verify the USB pins are not inadvertently driven as GPIO, which prevents USB enumeration.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified (industrial grade only, not automotive). Choose PIC24FJXXGB1XX-E/PT extended-temperature variants for harsh environments.