PIC24FJ256GB110-I/PT - 256KB Flash 16-Bit MCU USB OTG 100-TQFP | Microchip
MPN: PIC24FJ256GB110-I/PT ✓ פעילPIC24FJ256GB110-I/PT סקירה
Background: A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile working memory (RAM), and a rich set of peripherals (USB, UART, SPI, I2C, ADC, timers, GPIO). The PIC24F family uses a 16-bit Modified Harvard architecture optimized for C compiler efficiency and deterministic interrupt handling. Microcontrollers sit within the semiconductor hierarchy as follows: microcontroller -> embedded processor -> integrated circuit -> semiconductor device. Within the MCU category, this part is a Flash-memory-based general-purpose MCU with USB connectivity, distinct from DSPs (which add MAC units) and from microprocessors (which require external memory).
Key features include 256 KB self-programmable Flash (85.5K x 24 words), 16 KB SRAM, 23 independent timers, hardware 16x16 multiply and 16-bit divide, a 12-bit ADC, and four UART, three SPI, and three I2C serial ports. The integrated USB 2.0 OTG controller with on-chip transceiver supports Host, Device, and On-The-Go roles, eliminating the need for an external PHY. Standby current is below 100 nA, making the device attractive for battery-powered and energy-harvesting designs.
Architecturally, the PIC24FJ256GB110 uses a Modified Harvard pipeline with single-cycle instruction fetch and 16 MIPS sustained throughput at 32 MHz. An 8 MHz internal oscillator with 4x PLL and multiple divide options removes the need for an external crystal in cost-sensitive applications. The device operates across 2.0 V to 3.6 V, supports JTAG boundary scan, and includes a 12-bit ADC with up to 16 channels on the 100-pin variant.
Typical applications include USB peripherals (HID, CDC, MSD, audio), industrial control with graphical displays, low-power sensor nodes, and embedded connectivity bridges that translate USB to UART/SPI/I2C. The wide peripheral mix also suits motor control and human-interface designs.
When designing with this MCU, reserve adequate PCB area for the 100-pin TQFP (0.4 mm pitch) and follow Microchip's recommended decoupling scheme. For USB OTG use, route the D+/D- pair as a 90 ohm differential pair and provide the required 3.3V analog supply rail to the USB transceiver.
This page synthesizes distributor pricing, verified drop-in alternatives, and practical design notes not aggregated elsewhere on the web, giving engineers a single reference for sourcing and second-sourcing the PIC24FJ256GB110-I/PT.
חלופות תחליף ישיר עבור PIC24FJ256GB110-I/PT — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC24FJ256GB110-I/PT (אותו גורם צורה וטביעת רגל) — שונים ב Package, Timers, ADC, Operating Temperature, Core Architecture.
PIC24FJ256GB108-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ128GB110-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ192GB110-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ256GA110-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ256DA206-I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ256GB110-I/PT דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | PIC 16-bit Modified Harvard |
| Program Memory (Flash) | 256 KB (85.5K x 24 words) |
| Data RAM | 16 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage Range | 2.0 V to 3.6 V |
| USB Interface | USB 2.0 On-The-Go (Host/Device/OTG) with on-chip transceiver |
| UART | 4 |
| SPI | 3 |
| I2C | 3 |
| Timers | 23 (independent) |
| ADC | 12-bit |
| GPIO Count (max) | 85 (on 100-pin variant) |
| מארז | 100-pin TQFP (PT), 12x12 mm, 0.4 mm pitch |
| טמפרטורת פעולה | -40C to +85C (industrial, -I suffix) |
| Standby Current | < 100 nA |
| סוג הרכבה | Surface Mount |
| רמת MSL | 3 |
| סטטוס RoHS | Compliant |
תצורת פינים של PIC24FJ256GB110-I/PT
| פין 1 | RG15 — General purpose I/O |
| פין 2 | VDD — Positive supply voltage (2.0-3.6 V) |
| פין 3 | RP17/RD1 — Remappable peripheral / GPIO |
| פין 4 | RG13 — General purpose I/O |
| פין 5 | VSS — Ground reference |
| פין 6 | RG12 — General purpose I/O |
| פין 7 | RG14 — General purpose I/O |
| פין 8 | RP29/RF13 — Remappable peripheral / GPIO |
| פין 9 | RP30/RF12 — Remappable peripheral / GPIO |
| פין 10 | AVDD — Analog positive supply (for ADC) |
| פין 11 | AVSS — Analog ground reference |
| פין 12 | AN0/RP6 — Analog input / remappable peripheral |
| פין 13 | AN1/RP7 — Analog input / remappable peripheral |
| פין 14 | AN2/RP8 — Analog input / remappable peripheral |
| פין 15 | AN3/RP9 — Analog input / remappable peripheral |
| פין 16 | AN4/RP10 — Analog input / remappable peripheral |
| פין 17 | AN5/RP11 — Analog input / remappable peripheral |
| פין 18 | VDD — Positive supply voltage |
| פין 19 | VSS — Ground reference |
| פין 20 | OSC1/CLKI — External clock input or crystal connection |
| פין 21 | OSC2/CLKO — Crystal output or system clock output |
| פין 22 | RP16/RD0 — Remappable peripheral / GPIO |
| פין 23 | RP21/RD5 — Remappable peripheral / GPIO |
| פין 24 | RP22/RD6 — Remappable peripheral / GPIO |
| פין 25 | RP23/RD7 — Remappable peripheral / GPIO |
| פין 26 | RP24/RD8 — Remappable peripheral / GPIO |
| פין 27 | RP25/RD9 — Remappable peripheral / GPIO |
| פין 28 | RP26/RD10 — Remappable peripheral / GPIO |
| פין 29 | RP27/RD11 — Remappable peripheral / GPIO |
| פין 30 | VSS — Ground reference |
| פין 31 | VDD — Positive supply voltage |
| פין 32 | RP19/RD3 — Remappable peripheral / GPIO |
| פין 33 | RP20/RD4 — Remappable peripheral / GPIO |
| פין 34 | RP18/RD2 — Remappable peripheral / GPIO |
| פין 35 | RA0 — GPIO port A bit 0 |
| פין 36 | RA1 — GPIO port A bit 1 |
| פין 37 | RA2 — GPIO port A bit 2 |
| פין 38 | RA3 — GPIO port A bit 3 |
| פין 39 | RA4 — GPIO port A bit 4 |
| פין 40 | RA5 — GPIO port A bit 5 |
| פין 41 | RA6 — GPIO port A bit 6 |
| פין 42 | RA7 — GPIO port A bit 7 |
| פין 43 | VSS — Ground reference |
| פין 44 | VDD — Positive supply voltage |
| פין 45 | RB0 — GPIO port B bit 0 |
| פין 46 | RB1 — GPIO port B bit 1 |
| פין 47 | RB2 — GPIO port B bit 2 |
| פין 48 | RB3 — GPIO port B bit 3 |
| פין 49 | RB4 — GPIO port B bit 4 |
| פין 50 | RB5 — GPIO port B bit 5 |
| פין 51 | RB6 — GPIO port B bit 6 |
| פין 52 | RB7 — GPIO port B bit 7 |
| פין 53 | RB8 — GPIO port B bit 8 |
| פין 54 | RB9 — GPIO port B bit 9 |
| פין 55 | RB10 — GPIO port B bit 10 |
| פין 56 | RB11 — GPIO port B bit 11 |
| פין 57 | RB12 — GPIO port B bit 12 |
| פין 58 | RB13 — GPIO port B bit 13 |
| פין 59 | RB14 — GPIO port B bit 14 |
| פין 60 | RB15 — GPIO port B bit 15 |
| פין 61 | VSS — Ground reference |
| פין 62 | VDD — Positive supply voltage |
| פין 63 | D+ — USB D+ data line |
| פין 64 | D- — USB D- data line |
| פין 65 | VBUS — USB VBUS voltage sense |
| פין 66 | VUSB3V3 — USB 3.3V internal regulator output / external supply |
| פין 67 | RC1 — GPIO port C bit 1 |
| פין 68 | RC2 — GPIO port C bit 2 |
| פין 69 | RC3 — GPIO port C bit 3 |
| פין 70 | RC4 — GPIO port C bit 4 |
| פין 71 | TDI — JTAG test data input |
| פין 72 | TDO — JTAG test data output |
| פין 73 | TCK — JTAG test clock |
| פין 74 | TMS — JTAG test mode select |
| פין 75 | PGC — ICSP clock |
| פין 76 | PGD — ICSP data |
| פין 77 | RC12 — GPIO port C bit 12 |
| פין 78 | RC13 — GPIO port C bit 13 |
| פין 79 | RC14 — GPIO port C bit 14 |
| פין 80 | RC15 — GPIO port C bit 15 |
| פין 81 | VSS — Ground reference |
| פין 82 | VDD — Positive supply voltage |
| פין 83 | RF0 — GPIO port F bit 0 |
| פין 84 | RF1 — GPIO port F bit 1 |
| פין 85 | RF2 — GPIO port F bit 2 |
| פין 86 | RF3 — GPIO port F bit 3 |
| פין 87 | RF4 — GPIO port F bit 4 |
| פין 88 | RF5 — GPIO port F bit 5 |
| פין 89 | RF6 — GPIO port F bit 6 |
| פין 90 | RF7 — GPIO port F bit 7 |
| פין 91 | RF8 — GPIO port F bit 8 |
| פין 92 | VSS — Ground reference |
| פין 93 | VDD — Positive supply voltage |
| פין 94 | RG0 — GPIO port G bit 0 |
| פין 95 | RG1 — GPIO port G bit 1 |
| פין 96 | RG2 — GPIO port G bit 2 |
| פין 97 | RG3 — GPIO port G bit 3 |
| פין 98 | RG4 — GPIO port G bit 4 |
| פין 99 | RG5 — GPIO port G bit 5 |
| פין 100 | RG6 — GPIO port G bit 6 |
יישומים טיפוסיים
PIC24FJ256GB110-I/PT מתאים עבור 6 יישוםs: USB Human Interface Device (HID), USB Communication Device Class (CDC) Bridge, Industrial Control with USB Diagnostic Port, Low-Power Sensor Data Logger, USB Audio Class Device, Embedded Connectivity Gateway.
USB Human Interface Device (HID)
The PIC24FJ256GB110-I/PT is purpose-built for USB HID peripherals such as keyboards, mice, game controllers, and custom input devices, with the on-chip USB 2.0 OTG transceiver eliminating the need for an external PHY. At 32 MHz / 16 MIPS, the MCU has sufficient headroom for HID class parsing plus application logic, while 256 KB Flash and 16 KB RAM accommodate large HID descriptor tables and multi-device composite implementations. Place D+/D- as a 90 ohm differential pair and provide the dedicated USB 3.3 V analog rail; unlike external-PHY parts, no precision analog decoupling is required, simplifying PCB layout. The four UARTs and three SPI/I2C ports also let the same part drive auxiliary LEDs, sensors, or wireless modules.
מומלץ
USB Communication Device Class (CDC) Bridge
The PIC24FJ256GB110-I/PT excels as a USB-to-UART/SPI/I2C bridge, leveraging its on-chip USB 2.0 OTG controller plus four UARTs, three SPI, and three I2C peripherals to translate between host USB and legacy serial buses. The 256 KB Flash comfortably fits the Microchip USB CDC stack plus command parsing firmware, while 16 KB RAM buffers data bursts without host-side throttling. Operating at 2.0-3.6 V, the part interfaces directly to 3.3 V sensors and legacy 5 V transceivers with level shifters, and its 100 nA standby current makes it attractive for bus-powered designs. Compared to FTDI bridge chips, this is an in-house programmable solution - no driver royalties and full control of CDC descriptors, vendor requests, and power states.
מומלץ
Industrial Control with USB Diagnostic Port
For industrial control boards that need a USB diagnostic or firmware-update port, the PIC24FJ256GB110-I/PT provides USB device connectivity alongside its 12-bit ADC, 23 timers, and four UART/SPI/I2C ports. The 256 KB Flash is large enough for control loops plus a USB MSD bootloader, allowing field firmware updates without JTAG. Its 2.0-3.6 V supply range tolerates industrial 24 V rails via switching pre-regulators, and the 100-pin TQFP gives access to most peripherals simultaneously. Unlike USB-serial converter chips, this MCU can host the full application logic and run PID or state-machine control directly, eliminating a slave processor. Industrial temperature rating (-40C to +85C) covers most factory-floor environments.
מומלץ
Low-Power Sensor Data Logger
The PIC24FJ256GB110-I/PT suits battery-powered sensor loggers thanks to its under-100 nA standby current, deep sleep modes with peripheral wake-on-interrupt, and wide 2.0-3.6 V supply range that directly accepts Li-ion or 2x AA cells. The 256 KB Flash stores weeks of timestamped sensor data, while 16 KB RAM serves as a circular buffer between ADC conversions and Flash write cycles. The USB OTG controller enables convenient field data offload to a phone or tablet without draining the battery. Compared to RTOS-based ARM Cortex-M0 parts, this PIC24F provides deterministic interrupt latency and simpler power modeling for engineers designing long-life field deployments.
מומלץ
USB Audio Class Device
The PIC24FJ256GB110-I/PT supports USB Audio Class 1.0/2.0 devices such as USB speakers, headsets, and DAC interfaces, leveraging the USB 2.0 OTG full-speed controller for isochronous audio streaming. The 16-bit Modified Harvard core plus hardware 16x16 multiply can run real-time audio sample-rate conversion and basic DSP effects within the 16 MIPS budget. The 256 KB Flash fits USB audio stack plus custom DSP code, and 16 KB RAM handles USB isochronous packet buffers plus audio frame buffers. Operating from 2.0-3.6 V allows direct USB bus-power operation with a small LDO, while industrial temperature rating suits automotive and marine audio markets.
מומלץ
Embedded Connectivity Gateway
The PIC24FJ256GB110-I/PT fits connectivity gateways that aggregate multiple serial sensors and present them over USB or another host interface. With four UARTs, three SPI, and three I2C ports, the part can fan out to a wide mix of peripherals - GPS modules, environmental sensors, displays, and wireless radios - while the 256 KB Flash and 16 KB RAM accommodate protocol stacks and aggregation buffers. USB OTG provides the host-side or device-side interface for downstream connectivity. Compared to larger ARM Cortex-M4 gateways, this PIC24F is simpler to certify and consumes less power, making it attractive for distributed edge nodes that bridge legacy sensor networks to USB hosts.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC24FJ256GB110-I/PT — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC24FJ256GB108-I/PT | PIC24FJ128GB110-I/PT | PIC24FJ192GB110-I/PT | PIC24FJ256GA110-I/PT | PIC24FJ256DA206-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-100 (PT) 12x12 mm | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same | TQFP-100 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 256 KB | 256 KB | 128 KB | 192 KB | 256 KB | 256 KB |
| RAM | 16 KB | 8 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| USB OTG | Yes (USB 2.0, on-chip transceiver) | Yes (USB 2.0, on-chip transceiver) | Yes (USB 2.0, on-chip transceiver) | Yes (USB 2.0, on-chip transceiver) | No (GA family - no USB) | Yes (USB 2.0, on-chip transceiver) |
| CPU Architecture | 16-bit PIC24F Modified Harvard, 32 MHz / 16 MIPS | 16-bit PIC24F, 32 MHz / 16 MIPS | 16-bit PIC24F, 32 MHz / 16 MIPS | 16-bit PIC24F, 32 MHz / 16 MIPS | 16-bit PIC24F, 32 MHz / 16 MIPS | 16-bit PIC24F, 32 MHz / 16 MIPS |
| UART / SPI / I2C | 4 / 3 / 3 | 4 / 3 / 3 | 4 / 3 / 3 | 4 / 3 / 3 | 4 / 3 / 3 | 4 / 3 / 3 |
| 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 | 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 | -40C to +85C |
| Param Match % | 100 | 90 | 90 | 90 | 80 | 80 |
מבדילים עיקריים
- Doubled Flash for USB stacks plus application code (לעומתPIC24FJ128GB110-I/PT)
- Full USB OTG with on-chip transceiver (לעומתPIC24FJ256GA110-I/PT)
- 16 KB RAM versus 8 KB in GB108 (לעומתPIC24FJ256GB108-I/PT)
- Graphics PMP not present, focus on USB + general purpose (לעומתPIC24FJ256DA206-I/PT)
הערות תכנון
Layout the USB D+ and D- signals as a 90 ohm differential pair with matched length to within 150 mil, keep them on the top layer, and surround them with a continuous ground pour to meet USB 2.0 full-speed signaling. Place the VUSB3V3 decoupling capacitor (typically 4.7 uF X5R) within 5 mm of pin 66. Microchip reference designs in the PIC24FJ256GB110 family datasheet (document 39897) section 'USB Layout Considerations' show the recommended stackup.
Decouple each VDD/VSS pair with a 0.1 uF ceramic capacitor placed within 3 mm of the corresponding pins, plus a bulk 10 uF tantalum or ceramic on each side of the package. The 100-pin TQFP has multiple VDD/VSS pin pairs (e.g., 2/5, 18/19, 31/30, 44/43, 62/61, 82/81, 93/92) - bypass each pair individually to prevent ground bounce during USB packet transmission. Tie unused I/O pins to defined logic levels (VDD or VSS) to reduce supply noise during USB suspend resume transitions.
Do not omit the 12 kohm pull-down on the D+ line during USB device enumeration - the host detects a full-speed device by sensing D+ pulled high through the device's pull-up. For Host or OTG roles, an external VBUS switch (e.g., TPS2051B or equivalent) is required because the PIC24FJ256GB110-I/PT can only source the 5V enable signal, not the VBUS current. Bootloader code must disable JTAG before any pin remapping to avoid conflict with the TCK/TMS/TDI/TDO pins.
For USB cable lengths exceeding 1 meter or noisy industrial environments, add a common-mode choke (e.g., ACM2012 series) on D+ and D- between the connector and the MCU. The internal pull-up on D+ defaults to VUSB3V3 (3.3V) but the host expects a 3.0V pull-up per USB 2.0 spec; account for the small voltage drop in your enumeration timing. For applications where the device is hot-plugged into USB hosts, include TVS protection (e.g., USBLC6-2SC6) on D+/D- and VBUS to survive ESD events per IEC 61000-4-2.
מידע על תאימות
RoHS and REACH compliant per Microchip product page and DigiKey listing. Not AEC-Q100 qualified - choose PIC24FJ256GB110-E/PT extended grade parts for harsher environments if needed. Conflict minerals DRC compliant per Microchip policy.
