PIC24FJ256GB110-I/PF - 16-bit MCU 256KB Flash USB OTG TQFP-100
MPN: PIC24FJ256GB110-I/PF ✓ Hoạt độngPIC24FJ256GB110-I/PF Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC24FJ256GB110-I/PF — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC24FJ256GB110-I/PF (cùng hình factor và footprint) — khác nhau ở Timers, Package, Operating Temperature, ADC, Core Architecture.
PIC24FJ256GA110-I/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ128GB110-I/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ256GB110T-I/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC24FJ192GB110-I/PF
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC24FJ128GB110-I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC24FJ256GB110-I/PF Tỷ lệ tối đa & tính chất điện
| 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) |
| Nhiệt độ hoạt động | -40C to +85C (industrial grade, 'I' suffix) |
| Hộp | 100-pin TQFP (14x14 mm), 'PF' suffix |
| Kiểu lắp đặt | Surface Mount (SMD/SMT) |
| Trạng thái RoHS | Lead-free / Compliant |
Cấu hình chân PIC24FJ256GB110-I/PF
| Chân 1 | RG15 — I/O port RG15 |
| Chân 2 | VDD — Positive supply voltage |
| Chân 3 | RP5 — Remappable peripheral input 5 |
| Chân 4 | RP4 — Remappable peripheral input 4 |
| Chân 5 | RP3 — Remappable peripheral input 3 |
| Chân 6 | RP2 — Remappable peripheral input 2 |
| Chân 7 | RP1 — Remappable peripheral input 1 |
| Chân 8 | RP0 — Remappable peripheral input 0 |
| Chân 9 | VSS — Ground reference |
| Chân 10 | OSC1 — Crystal oscillator input / external clock input |
| Chân 11 | OSC2 — Crystal oscillator output |
| Chân 12 | SOSC1 — Secondary oscillator input for RTCC |
| Chân 13 | SOSC2 — Secondary oscillator output |
| Chân 14 | VCAP — Internal voltage regulator output (bypass with 10 uF cap) |
| Chân 15 | PGEC1 — ICSP clock 1 / ICD clock |
| Chân 16 | PGED1 — ICSP data 1 / ICD data |
| Chân 17 | PGEC2 — ICSP clock 2 (alternate) |
| Chân 18 | PGED2 — ICSP data 2 (alternate) |
| Chân 19 | RA0 — I/O port RA0 / analog AN0 |
| Chân 20 | RA1 — I/O port RA1 / analog AN1 |
| Chân 21 | RA2 — I/O port RA2 / analog AN2 |
| Chân 22 | RA3 — I/O port RA3 / analog AN3 |
| Chân 23 | RA4 — I/O port RA4 |
| Chân 24 | RA5 — I/O port RA5 |
| Chân 25 | RA6 — I/O port RA6 |
| Chân 26 | RA7 — I/O port RA7 |
| Chân 27 | RA9 — I/O port RA9 |
| Chân 28 | RA10 — I/O port RA10 |
| Chân 29 | AVDD — Analog positive supply |
| Chân 30 | AVSS — Analog ground |
| Chân 31 | RB0 — I/O port RB0 / analog AN4 |
| Chân 32 | RB1 — I/O port RB1 / analog AN5 |
| Chân 33 | RB2 — I/O port RB2 / analog AN6 |
| Chân 34 | RB3 — I/O port RB3 / analog AN7 |
| Chân 35 | RB4 — I/O port RB4 / analog AN8 |
| Chân 36 | RB5 — I/O port RB5 / analog AN9 |
| Chân 37 | RB6 — I/O port RB6 |
| Chân 38 | RB7 — I/O port RB7 |
| Chân 39 | RB8 — I/O port RB8 |
| Chân 40 | RB9 — I/O port RB9 |
| Chân 41 | RB10 — I/O port RB10 |
| Chân 42 | RB11 — I/O port RB11 |
| Chân 43 | RB12 — I/O port RB12 |
| Chân 44 | RB13 — I/O port RB13 |
| Chân 45 | RB14 — I/O port RB14 |
| Chân 46 | RB15 — I/O port RB15 |
| Chân 47 | RC1 — I/O port RC1 / analog AN10 |
| Chân 48 | RC2 — I/O port RC2 / analog AN11 |
| Chân 49 | RC3 — I/O port RC3 / analog AN12 |
| Chân 50 | RC4 — I/O port RC4 / analog AN13 |
| Chân 51 | RD0 — I/O port RD0 |
| Chân 52 | RD1 — I/O port RD1 |
| Chân 53 | RD2 — I/O port RD2 |
| Chân 54 | RD3 — I/O port RD3 |
| Chân 55 | RD4 — I/O port RD4 |
| Chân 56 | RD5 — I/O port RD5 |
| Chân 57 | RD6 — I/O port RD6 |
| Chân 58 | RD7 — I/O port RD7 |
| Chân 59 | VDD — Positive supply voltage |
| Chân 60 | VSS — Ground reference |
| Chân 61 | RC12 — I/O port RC12 |
| Chân 62 | RC13 — I/O port RC13 |
| Chân 63 | RC14 — I/O port RC14 |
| Chân 64 | RC15 — I/O port RC15 |
| Chân 65 | RD8 — I/O port RD8 |
| Chân 66 | RD9 — I/O port RD9 |
| Chân 67 | RD10 — I/O port RD10 |
| Chân 68 | RD11 — I/O port RD11 |
| Chân 69 | RD12 — I/O port RD12 |
| Chân 70 | RD13 — I/O port RD13 |
| Chân 71 | RD14 — I/O port RD14 |
| Chân 72 | RD15 — I/O port RD15 |
| Chân 73 | RF0 — I/O port RF0 |
| Chân 74 | RF1 — I/O port RF1 |
| Chân 75 | RG0 — I/O port RG0 |
| Chân 76 | RG1 — I/O port RG1 |
| Chân 77 | RG2 — I/O port RG2 |
| Chân 78 | RG3 — I/O port RG3 |
| Chân 79 | RE0 — I/O port RE0 |
| Chân 80 | RE1 — I/O port RE1 |
| Chân 81 | RE2 — I/O port RE2 |
| Chân 82 | RE3 — I/O port RE3 |
| Chân 83 | RE4 — I/O port RE4 |
| Chân 84 | RE5 — I/O port RE5 |
| Chân 85 | RE6 — I/O port RE6 |
| Chân 86 | RE7 — I/O port RE7 |
| Chân 87 | RF2 — I/O port RF2 |
| Chân 88 | RF3 — I/O port RF3 |
| Chân 89 | RF4 — I/O port RF4 |
| Chân 90 | RF5 — I/O port RF5 |
| Chân 91 | RF6 — I/O port RF6 |
| Chân 92 | RF7 — I/O port RF7 |
| Chân 93 | RF8 — I/O port RF8 |
| Chân 94 | D+ — USB D+ data line (integrated transceiver) |
| Chân 95 | D- — USB D- data line (integrated transceiver) |
| Chân 96 | VBUS — USB VBUS detect (5V tolerant) |
| Chân 97 | RG6 — I/O port RG6 |
| Chân 98 | RG7 — I/O port RG7 |
| Chân 99 | RG8 — I/O port RG8 |
| Chân 100 | RG9 — I/O port RG9 |
Ứng dụng tiêu biểu
PIC24FJ256GB110-I/PF phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC24FJ256GB110-I/PF — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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) |
Bảo phân biệt quan trọng
- 256 KB Flash / 16 KB SRAM with integrated USB OTG in TQFP-100 (vsPIC24FJ128GB110-I/PF)
- Integrated USB OTG eliminates external bridge IC BOM (vsPIC24FJ256GA110-I/PF)
- 100-pin TQFP-100 in 'PF' (14x14 mm) outline vs smaller 'PT' variants (vsPIC24FJ128GB110-I/PT)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
