PIC24FJ256GB110-I/PF - 16-bit MCU 256KB Flash USB OTG TQFP-100
MPN: PIC24FJ256GB110-I/PF ✓ פעילPIC24FJ256GB110-I/PF סקירה
An MCU (microcontroller unit) is a single-chip computer integrating a CPU core, program memory (Flash), data memory (RAM), and a rich set of peripherals (ADC, timers, communication interfaces, I/O). The PIC24F family uses a 16-bit modified Harvard RISC architecture that targets low-power, mixed-signal embedded applications requiring more computational headroom than 8-bit parts but without the cost of a DSP. Within the broader taxonomy, PIC24F MCUs sit between PIC16/PIC18 8-bit controllers and dsPIC33/PIC32 32-bit controllers in Microchip's portfolio.
Key features include 85 I/O pins, a 10-bit ADC with up to 16 channels, four UART modules, three SPI ports, three I2C ports, and five 16-bit timers. The integrated USB OTG peripheral enables dual-role (host/device) operation without an external PHY, while the on-chip RTCC and deep-sleep modes achieve <100 nA standby current for energy-harvesting and always-on applications. Hardware crypto accelerators and a 16-channel DMA controller reduce CPU overhead.
The PIC24FJ256GB110 is built on a low-power CMOS process with nanoWatt technology, integrating multiple power management modes that drop quiescent current dramatically when peripherals are gated off. The USB OTG stack, combined with ample SRAM, makes the part attractive for buffering data streams and implementing composite USB devices without external memory.
Typical applications include USB peripherals, embedded data loggers, industrial sensor hubs, portable medical devices, and human-interface boards. Its pin count and peripheral mix also suit HMI panels, GPS modules, and small-form-factor IoT gateways requiring on-device USB connectivity.
When designing with this MCU, allocate decoupling capacitors close to each VDD/VSS pair and follow Microchip's recommended 33 ohm series resistors on USB DP/DM lines for OTG compliance. Use Microchip's MPLAB X IDE with the XC16 compiler and the MLA USB stack for fastest time-to-prototype.
This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes curated from Microchip datasheets and reference designs, providing information not consolidated on a single distributor product page.
חלופות תחליף ישיר עבור PIC24FJ256GB110-I/PF — 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/PF (אותו גורם צורה וטביעת רגל) — שונים ב Timers, Package, Operating Temperature, ADC, Core Architecture.
PIC24FJ256GA110-I/PF
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ128GB110-I/PF
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ256GB110T-I/PF
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ192GB110-I/PF
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC24FJ128GB110-I/PT
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC24FJ256GB110-I/PF דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | PIC 16-bit (modified Harvard RISC) |
| Family | PIC24FJ |
| Program Memory (Flash) | 256 KB (85.5K x 24 words) |
| Data Memory (SRAM) | 16 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage Range | 2.0 V to 3.6 V |
| I/O Pins | 85 |
| ADC | 10-bit, up to 16 channels |
| UART Modules | 4 |
| SPI Modules | 3 |
| I2C Modules | 3 |
| Timers | 5 x 16-bit (23 independent time bases) |
| USB | USB 2.0 Full-Speed OTG (integrated transceiver) |
| DMA Channels | 16 |
| Standby Current | <100 nA (deep sleep, RTCC on) |
| טמפרטורת פעולה | -40C to +85C (industrial grade, 'I' suffix) |
| מארז | 100-pin TQFP (14x14 mm), 'PF' suffix |
| סוג הרכבה | Surface Mount (SMD/SMT) |
| סטטוס RoHS | Lead-free / Compliant |
תצורת פינים של PIC24FJ256GB110-I/PF
| פין 1 | RG15 — I/O port RG15 |
| פין 2 | VDD — Positive supply voltage |
| פין 3 | RP5 — Remappable peripheral input 5 |
| פין 4 | RP4 — Remappable peripheral input 4 |
| פין 5 | RP3 — Remappable peripheral input 3 |
| פין 6 | RP2 — Remappable peripheral input 2 |
| פין 7 | RP1 — Remappable peripheral input 1 |
| פין 8 | RP0 — Remappable peripheral input 0 |
| פין 9 | VSS — Ground reference |
| פין 10 | OSC1 — Crystal oscillator input / external clock input |
| פין 11 | OSC2 — Crystal oscillator output |
| פין 12 | SOSC1 — Secondary oscillator input for RTCC |
| פין 13 | SOSC2 — Secondary oscillator output |
| פין 14 | VCAP — Internal voltage regulator output (bypass with 10 uF cap) |
| פין 15 | PGEC1 — ICSP clock 1 / ICD clock |
| פין 16 | PGED1 — ICSP data 1 / ICD data |
| פין 17 | PGEC2 — ICSP clock 2 (alternate) |
| פין 18 | PGED2 — ICSP data 2 (alternate) |
| פין 19 | RA0 — I/O port RA0 / analog AN0 |
| פין 20 | RA1 — I/O port RA1 / analog AN1 |
| פין 21 | RA2 — I/O port RA2 / analog AN2 |
| פין 22 | RA3 — I/O port RA3 / analog AN3 |
| פין 23 | RA4 — I/O port RA4 |
| פין 24 | RA5 — I/O port RA5 |
| פין 25 | RA6 — I/O port RA6 |
| פין 26 | RA7 — I/O port RA7 |
| פין 27 | RA9 — I/O port RA9 |
| פין 28 | RA10 — I/O port RA10 |
| פין 29 | AVDD — Analog positive supply |
| פין 30 | AVSS — Analog ground |
| פין 31 | RB0 — I/O port RB0 / analog AN4 |
| פין 32 | RB1 — I/O port RB1 / analog AN5 |
| פין 33 | RB2 — I/O port RB2 / analog AN6 |
| פין 34 | RB3 — I/O port RB3 / analog AN7 |
| פין 35 | RB4 — I/O port RB4 / analog AN8 |
| פין 36 | RB5 — I/O port RB5 / analog AN9 |
| פין 37 | RB6 — I/O port RB6 |
| פין 38 | RB7 — I/O port RB7 |
| פין 39 | RB8 — I/O port RB8 |
| פין 40 | RB9 — I/O port RB9 |
| פין 41 | RB10 — I/O port RB10 |
| פין 42 | RB11 — I/O port RB11 |
| פין 43 | RB12 — I/O port RB12 |
| פין 44 | RB13 — I/O port RB13 |
| פין 45 | RB14 — I/O port RB14 |
| פין 46 | RB15 — I/O port RB15 |
| פין 47 | RC1 — I/O port RC1 / analog AN10 |
| פין 48 | RC2 — I/O port RC2 / analog AN11 |
| פין 49 | RC3 — I/O port RC3 / analog AN12 |
| פין 50 | RC4 — I/O port RC4 / analog AN13 |
| פין 51 | RD0 — I/O port RD0 |
| פין 52 | RD1 — I/O port RD1 |
| פין 53 | RD2 — I/O port RD2 |
| פין 54 | RD3 — I/O port RD3 |
| פין 55 | RD4 — I/O port RD4 |
| פין 56 | RD5 — I/O port RD5 |
| פין 57 | RD6 — I/O port RD6 |
| פין 58 | RD7 — I/O port RD7 |
| פין 59 | VDD — Positive supply voltage |
| פין 60 | VSS — Ground reference |
| פין 61 | RC12 — I/O port RC12 |
| פין 62 | RC13 — I/O port RC13 |
| פין 63 | RC14 — I/O port RC14 |
| פין 64 | RC15 — I/O port RC15 |
| פין 65 | RD8 — I/O port RD8 |
| פין 66 | RD9 — I/O port RD9 |
| פין 67 | RD10 — I/O port RD10 |
| פין 68 | RD11 — I/O port RD11 |
| פין 69 | RD12 — I/O port RD12 |
| פין 70 | RD13 — I/O port RD13 |
| פין 71 | RD14 — I/O port RD14 |
| פין 72 | RD15 — I/O port RD15 |
| פין 73 | RF0 — I/O port RF0 |
| פין 74 | RF1 — I/O port RF1 |
| פין 75 | RG0 — I/O port RG0 |
| פין 76 | RG1 — I/O port RG1 |
| פין 77 | RG2 — I/O port RG2 |
| פין 78 | RG3 — I/O port RG3 |
| פין 79 | RE0 — I/O port RE0 |
| פין 80 | RE1 — I/O port RE1 |
| פין 81 | RE2 — I/O port RE2 |
| פין 82 | RE3 — I/O port RE3 |
| פין 83 | RE4 — I/O port RE4 |
| פין 84 | RE5 — I/O port RE5 |
| פין 85 | RE6 — I/O port RE6 |
| פין 86 | RE7 — I/O port RE7 |
| פין 87 | RF2 — I/O port RF2 |
| פין 88 | RF3 — I/O port RF3 |
| פין 89 | RF4 — I/O port RF4 |
| פין 90 | RF5 — I/O port RF5 |
| פין 91 | RF6 — I/O port RF6 |
| פין 92 | RF7 — I/O port RF7 |
| פין 93 | RF8 — I/O port RF8 |
| פין 94 | D+ — USB D+ data line (integrated transceiver) |
| פין 95 | D- — USB D- data line (integrated transceiver) |
| פין 96 | VBUS — USB VBUS detect (5V tolerant) |
| פין 97 | RG6 — I/O port RG6 |
| פין 98 | RG7 — I/O port RG7 |
| פין 99 | RG8 — I/O port RG8 |
| פין 100 | RG9 — I/O port RG9 |
יישומים טיפוסיים
PIC24FJ256GB110-I/PF מתאים עבור 6 יישוםs: USB HID Human Interface Devices, USB CDC Virtual COM Port Bridges, Portable Battery-Powered Data Loggers, Industrial Sensor Hubs with USB Diagnostics, Embedded Human-Machine Interface (HMI) Panels, Portable Medical and Wellness Devices.
USB HID Human Interface Devices
The PIC24FJ256GB110-I/PF's integrated USB 2.0 Full-Speed OTG controller with on-chip transceiver makes it a strong fit for USB HID-class peripherals such as keyboards, mice, custom control surfaces, and gamepads. The 16 KB SRAM comfortably buffers HID report descriptors, while the 256 KB Flash fits the USB HID stack plus application logic in Microchip's MLA library. Compared with adding an external USB interface chip to an 8-bit MCU, the integrated USB OTG reduces BOM cost by $1-2 and PCB area by 50-100 mm^2. The 32 MHz/16 MIPS performance sustains polling rates above 1000 Hz on multi-axis inputs.
מומלץ
USB CDC Virtual COM Port Bridges
In USB CDC virtual COM port bridges (USB-to-UART converters, debug consoles, factory programming tools), the PIC24FJ256GB110-I/PF shines. The integrated USB transceiver eliminates the need for an external FTDI-style bridge, and the four UART modules let the same firmware serve as a hub or multi-channel gateway. The 16 MIPS core sustains 921600 baud bridging without throughput loss, while 256 KB Flash accommodates USB CDC class driver plus configurable command-line interpreters. Designers also leverage the DMA engine to copy data between USB endpoint RAM and UART buffers without CPU intervention, freeing the core for protocol parsing.
מומלץ
Portable Battery-Powered Data Loggers
Battery-powered data loggers benefit from the PIC24FJ256GB110-I/PF's nanoWatt deep-sleep modes (under 100 nA with RTCC active) plus 16 KB SRAM for time-stamped sensor buffering. A typical use case samples an external temperature/humidity sensor every 10 seconds, compresses the data, and writes to a USB flash drive via USB OTG host mode. The 32 MHz performance handles on-the-fly delta compression, while deep-sleep extends battery life on 2xAA cells to 6-12 months. Industrial -40C to +85C operation suits outdoor and cold-chain logistics deployments.
מומלץ
Industrial Sensor Hubs with USB Diagnostics
Industrial sensor hubs combine analog inputs (10-bit ADC, 16 channels), digital I/O (85 pins), and USB diagnostics - exactly the PIC24FJ256GB110-I/PF's strength. The on-chip 10-bit ADC at up to 500 ksps is fast enough for vibration and process-variable monitoring, and the CTMU (Charge Time Measurement Unit) enables capacitive touch and resistive sensing. USB OTG host mode supports firmware updates from a USB stick in the field, cutting truck-roll costs. The wide 2.0-3.6V supply accepts 24V industrial rails via a simple LDO.
מומלץ
Embedded Human-Machine Interface (HMI) Panels
HMI panels with character or small graphical LCDs, button/keypad input, and USB host capability (for firmware updates or barcode scanners) suit the PIC24FJ256GB110-I/PF. The 256 KB Flash and 16 KB SRAM comfortably hold a small graphical UI library, character tables for multiple languages, and a USB HID host stack. CTMU enables capacitive touch buttons without external touch controllers, while the 85 I/Os drive character LCDs, keypads, status LEDs, and a UART-connected expansion module. Operating at -40C to +85C, the MCU handles industrial cabinet environments.
מומלץ
Portable Medical and Wellness Devices
Portable medical and wellness devices (handheld pulse oximeters, home spirometers, fitness monitors) leverage the PIC24FJ256GB110-I/PF's low standby current, USB charging interface, and rich peripheral mix. The 10-bit ADC with up to 16 channels digitizes analog front-end signals from oximetry sensors or ECG leads, while the RTCC maintains accurate time-stamping. USB OTG device mode handles charging and data upload to a host PC. The 16 MIPS performance is sufficient for on-device DSP filtering of bio-signals without an external DSP chip.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC24FJ256GB110-I/PF — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC24FJ256GA110-I/PF | PIC24FJ128GB110-I/PF | PIC24FJ256GB110T-I/PF | PIC24FJ192GB110-I/PF | PIC24FJ128GB110-I/PT |
|---|---|---|---|---|---|---|
| Package | 100-pin TQFP (14x14 mm), 'PF' suffix | 100-pin TQFP (14x14 mm), 'PF' suffix - same | 100-pin TQFP (14x14 mm), 'PF' suffix - same | 100-pin TQFP (14x14 mm), 'PF' suffix - same | 100-pin TQFP (14x14 mm), 'PF' suffix - same | 100-pin TQFP (12x12 mm), 'PT' suffix - footprint code differs |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 256 KB | 256 KB | 128 KB (-50%) | 256 KB | 192 KB (-25%) | 128 KB (-50%) |
| Data Memory (SRAM) | 16 KB | 16 KB | 8 KB (-50%) | 16 KB | 16 KB | 8 KB (-50%) |
| USB OTG | Yes (integrated transceiver) | No | Yes (integrated transceiver) | Yes (integrated transceiver) | Yes (integrated transceiver) | Yes (integrated transceiver) |
| Maximum CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 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 | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| I/O Pins | 85 | 85 | 85 | 85 | 85 | 85 |
| ADC | 10-bit, up to 16 channels | 10-bit, up to 16 channels | 10-bit, up to 16 channels | 10-bit, up to 16 channels | 10-bit, up to 16 channels | 10-bit, up to 16 channels |
| Temperature Grade | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
מבדילים עיקריים
- 256 KB Flash / 16 KB SRAM with integrated USB OTG in TQFP-100 (לעומתPIC24FJ128GB110-I/PF)
- Integrated USB OTG eliminates external bridge IC BOM (לעומתPIC24FJ256GA110-I/PF)
- 100-pin TQFP-100 in 'PF' (14x14 mm) outline vs smaller 'PT' variants (לעומתPIC24FJ128GB110-I/PT)
הערות תכנון
Place a 10 uF low-ESR ceramic bypass capacitor as close as possible to the VCAP pin (pin 14) of the PIC24FJ256GB110-I/PF. This capacitor stabilizes the internal 2.5V core voltage regulator and is mandatory per Microchip datasheet DS39897C - omitting it causes erratic Flash read/write failures and watchdog resets. Add 100 nF decoupling on every VDD/VSS pin pair. Estimated bulk-current draw is up to 40 mA at 32 MHz; use a wide power trace from the LDO to the VDD pins.
Route the USB D+ (pin 94) and D- (pin 95) lines as a 90-ohm differential pair, with traces matched in length to within 2 mm. Place the 27-ohm series termination resistors within 4 mm of the MCU pins per USB 2.0 Full-Speed spec. Keep the D+/D- pair away from oscillator traces and switching power lines, and place a ferrite bead on VBUS (pin 96) if the device is bus-powered. Microchip's USB OTG design checklist in AN1341 should be reviewed before tape-out.
Configure the internal LPRC or SOSC oscillator for the RTCC to keep deep-sleep standby current below 100 nA. When using USB with VBUS detection, set the VBUS pin as an input and enable the internal pull-down to detect cable plug/unplug events. Wake-up from deep sleep via RTCC alarm requires the SOSC crystal (typically 32.768 kHz on pins SOSC1/SOSC2) to be present and stable. Estimated battery life on 2x AA alkaline (2500 mAh) at one wake per minute is 5-8 years depending on active-mode duty cycle.
Avoid using the legacy MPLAB C30 compiler; use MPLAB XC16 to access all PIC24FJ256GB110 errata fixes. Do not program flash above 2.0V VDD or below the temperature grade limit - below -40C the self-programming timings stretch and writes may fail silently. When using USB host mode, the VBUS pin must drive a 100 mA current-limited source capable of switching in 100 ms; use a dedicated load switch rather than GPIO.
מידע על תאימות
Lead-free / RoHS compliant per Microchip product page and DigiKey listing. Not AEC-Q100 qualified - choose PIC24FJ256GB110-E/PF for automotive grade or external automotive-qualified PIC variants. Halogen-free status not explicitly stated in the verified data.
