PIC32MX550F256L-V/PF - 32-bit MCU, 256KB Flash, USB/CAN | Microchip
MPN: PIC32MX550F256L-V/PF ✓ فعالPIC32MX550F256L-V/PF نمای کلی
A 32-bit microcontroller (MCU) is a single-chip processor that integrates CPU, memory (Flash/RAM), and programmable peripherals. MCUs sit at the foundation of embedded systems, sitting hierarchically under the broader category of microcontrollers, then embedded processors, then semiconductors. The PIC32MX family specifically uses the MIPS32 instruction set, which differs architecturally from ARM Cortex-M cores while offering competitive code density and deterministic interrupt latency.
Key features include 50 MHz core with single-cycle multiply, hardware multiply/divide, 16-bit wide instruction path, 5-channel DMA, four 16-bit timers/captures, five UART modules, two comparators, CTMU (Charge Time Measurement Unit), RTCC, and an 8-bit Parallel Master Port. The PPS system remaps digital peripherals to most I/O pins, simplifying PCB layout.
Typical applications include industrial USB device controllers, CAN-based automotive node ECUs, low-cost HMI panels with PMP-driven LCDs, audio codecs bridging via I2S, and embedded point-of-sale terminals. The integrated USB OTG plus CAN combination is rare in this price tier and is the primary differentiator versus PIC32MX4xx/2xx parts that lack USB or CAN.
When designing with this device, observe the 100-pin TQFP land pattern, ensure 3.3V rail decoupling within 5 mm of every VDD/VSS pair, and reserve JTAG/PGD/PGC test access per the Microchip programming specification. For CAN bus termination, add a 120 ohm resistor at each node end.
جایگزین‌های drop-in برای PIC32MX550F256L-V/PF — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC32MX550F256L-V/PF (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Core Architecture, ADC, Package, CAN, USB.
PIC32MX550F256LT-V/PF
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC32MX550F256L-V/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC32MX550F256L-50I/PF
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC32MX550F256L-50I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC32MX534F064L-V/PF
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC32MX450F256L-V/PF
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC32MX550F256L-V/PF حداکثر مقادیر مجاز و مشخصات الکتریکی
| Core | MIPS32 M4K |
| Core Architecture | MIPS32 |
| Maximum Core Frequency | 50 MHz |
| DMIPS | 83 |
| Program Memory (Flash) | 256 KB |
| Data Memory (SRAM) | 32 KB |
| Operating Voltage | 2.3 V to 3.6 V |
| I/O Pins | 85 |
| USB | USB 2.0 Full-Speed OTG |
| CAN | CAN 2.0B with DeviceNet addressing |
| SPI Modules | 4 |
| I2S Modules | 2 |
| UART Modules | 5 |
| PMP (Parallel Master Port) | Yes, 8-bit with dual buffers |
| Timers | 5 x 16-bit |
| DMA Channels | 5 |
| PPS (Peripheral Pin Select) | Yes |
| CTMU | Yes |
| RTCC | Yes |
| Comparators | 2 |
| Temperature Grade | -40C to +105C (V grade) |
| بسته‌بندی | 100-pin TQFP (14x14 mm) |
| نوع نصب | Surface Mount |
| RoHS | Compliant |
پیکربندی پین PIC32MX550F256L-V/PF
| پین 1 | RG15 — Port RG15 I/O pin |
| پین 2 | VSS — Ground reference |
| پین 3 | RD0 — Port RD0 / PMD0 / INT0 |
| پین 4 | RD1 — Port RD1 / PMD1 |
| پین 5 | RD2 — Port RD2 / PMD2 |
| پین 6 | RD3 — Port RD3 / PMD3 |
| پین 7 | RD4 — Port RD4 / PMD4 |
| پین 8 | RD5 — Port RD5 / PMD5 |
| پین 9 | RD6 — Port RD6 / PMD6 |
| پین 10 | RD7 — Port RD7 / PMD7 |
| پین 11 | VSS — Ground reference |
| پین 12 | RC13 — Port RC13 I/O |
| پین 13 | RC14 — Port RC14 I/O |
| پین 14 | RB0 — Port RB0 / PGED3 / AN0 |
| پین 15 | RB1 — Port RB1 / PGEC3 / AN1 |
| پین 16 | RB2 — Port RB2 / AN2 |
| پین 17 | RB3 — Port RB3 / AN3 |
| پین 18 | RB4 — Port RB4 / AN4 |
| پین 19 | RB5 — Port RB5 / AN5 / VBUS |
| پین 20 | RB6 — Port RB6 / AN6 / OC1 |
| پین 21 | RB7 — Port RB7 / AN7 |
| پین 22 | VDD — Positive supply 2.3-3.6V |
| پین 23 | VSS — Ground reference |
| پین 24 | RA9 — Port RA9 I/O |
| پین 25 | RA10 — Port RA10 I/O |
| پین 26 | RA0 — Port RA0 / TMS |
| پین 27 | RA1 — Port RA1 / TCK |
| پین 28 | RA2 — Port RA2 / SDA2 |
| پین 29 | RA3 — Port RA3 / SCL2 |
| پین 30 | RA4 — Port RA4 I/O |
| پین 31 | RA5 — Port RA5 I/O |
| پین 32 | VDD — Positive supply 2.3-3.6V |
| پین 33 | VSS — Ground reference |
| پین 34 | RB8 — Port RB8 / OC2 |
| پین 35 | RB9 — Port RB9 / IC2 |
| پین 36 | RB10 — Port RB10 I/O |
| پین 37 | RB11 — Port RB11 I/O |
| پین 38 | RB12 — Port RB12 I/O |
| پین 39 | RB13 — Port RB13 I/O |
| پین 40 | RB14 — Port RB14 / VBUSON |
| پین 41 | RB15 — Port RB15 / OCFB |
| پین 42 | VSS — Ground reference |
| پین 43 | RF0 — Port RF0 |
| پین 44 | RF1 — Port RF1 |
| پین 45 | RF2 — Port RF2 / SDA1 |
| پین 46 | RF3 — Port RF3 / SCL1 |
| پین 47 | RF4 — Port RF4 / OC4 |
| پین 48 | RF5 — Port RF5 / SDO1 |
| پین 49 | VDD — Positive supply 2.3-3.6V |
| پین 50 | VSS — Ground reference |
| پین 51 | RF6 — Port RF6 / SCK1 |
| پین 52 | RF7 — Port RF7 / U1CTS |
| پین 53 | RF8 — Port RF8 / U1RTS |
| پین 54 | RF9 — Port RF9 / U2CTS |
| پین 55 | RF10 — Port RF10 / U2RTS |
| پین 56 | RF11 — Port RF11 / U3CTS |
| پین 57 | RF12 — Port RF12 / U3RTS |
| پین 58 | RF13 — Port RF13 / U4CTS |
| پین 59 | RF14 — Port RF14 / U4RTS |
| پین 60 | RF15 — Port RF15 / U5CTS |
| پین 61 | VSS — Ground reference |
| پین 62 | RG6 — Port RG6 / SCK2 |
| پین 63 | RG7 — Port RG7 / SDO2 |
| پین 64 | RG8 — Port RG8 / SDI2 |
| پین 65 | RG9 — Port RG9 / SS2 |
| پین 66 | VDD — Positive supply 2.3-3.6V |
| پین 67 | RC1 — Port RC1 / OC1 |
| پین 68 | RC2 — Port RC2 / OC2 |
| پین 69 | RC3 — Port RC3 / OC3 |
| پین 70 | RC4 — Port RC4 / SDI1 |
| پین 71 | VSS — Ground reference |
| پین 72 | RD8 — Port RD8 / PMA0 |
| پین 73 | RD9 — Port RD9 / PMA1 |
| پین 74 | RD10 — Port RD10 / PMA2 |
| پین 75 | RD11 — Port RD11 / PMA3 |
| پین 76 | RD12 — Port RD12 / PMA4 |
| پین 77 | RD13 — Port RD13 / PMA5 |
| پین 78 | RD14 — Port RD14 / PMA6 |
| پین 79 | RD15 — Port RD15 / PMA7 |
| پین 80 | VSS — Ground reference |
| پین 81 | RE0 — Port RE0 / PMRD |
| پین 82 | RE1 — Port RE1 / PMWR |
| پین 83 | RE2 — Port RE2 / CS1 |
| پین 84 | RE3 — Port RE3 / CS2 |
| پین 85 | RE4 — Port RE4 / AER |
| پین 86 | RE5 — Port RE5 / ALR |
| پین 87 | VDD — Positive supply 2.3-3.6V |
| پین 88 | VDD — Positive supply 2.3-3.6V |
| پین 89 | RG0 — Port RG0 / C1RX |
| پین 90 | RG1 — Port RG1 / C1TX |
| پین 91 | RG2 — Port RG2 / DMI |
| پین 92 | RG3 — Port RG3 / DPO |
| پین 93 | RA6 — Port RA6 / TRCLK |
| پین 94 | RA7 — Port RA7 / TRD0 |
| پین 95 | VSS — Ground reference |
| پین 96 | RG14 — Port RG14 / SDA3 |
| پین 97 | RG12 — Port RG12 / SCL3 |
| پین 98 | RG13 — Port RG13 / SDA4 |
| پین 99 | RG10 — Port RG10 / SCL4 |
| پین 100 | RG11 — Port RG11 / U5RTS |
کاربردهای معمول
PIC32MX550F256L-V/PF مناسب است برای 7 کاربردs: Industrial USB Device / HID Controller, CAN-Based Automotive / Industrial Node ECU, Low-Cost HMI Panel with Graphics LCD, Audio Codec Interface (I2S Bridge), Embedded Point-of-Sale Terminal, Sensor Hub with USB / CAN Aggregation, USB-to-CAN Gateway Bridge.
Industrial USB Device / HID Controller
The PIC32MX550F256L-V/PF is purpose-built for industrial USB peripherals thanks to its integrated USB 2.0 Full-Speed OTG controller, eliminating the need for an external USB PHY. The 50 MHz MIPS32 M4K core delivers 83 DMIPS, providing responsive HID report transfer throughput for barcode readers, USB-to-CAN gateways, and USB-connected data loggers. The -40C to +105C (V grade) operation handles factory-floor temperature swings. Use it between a USB host port and a downstream sensor array with 5-channel DMA offloading bulk transfers.
پیشنهادی
CAN-Based Automotive / Industrial Node ECU
The integrated CAN 2.0B module with DeviceNet addressing support makes this part ideal for in-vehicle networking nodes, body controllers, and industrial CANopen / DeviceNet slave devices. The 256 KB Flash accommodates CANopen or J1939 protocol stacks, while 32 KB SRAM handles CAN message buffering plus application code. Place the MCU on the CAN bus with a TJA1050 or MCP2551 transceiver; the on-chip CAN controller supports up to 1 Mbps bus speed. The 100-pin package enables fiber access via the TQFP footprint with 85 usable I/O pins.
پیشنهادی
Low-Cost HMI Panel with Graphics LCD
The 8-bit Parallel Master Port (PMP) with dual read/write buffers drives graphics TFT or character LCDs directly, eliminating external display controllers. Combined with Peripheral Pin Select (PPS), the design engineer can map data lines to convenient PCB locations, simplifying layout. The 50 MHz core sustains 60 fps display refreshes for small QVGA panels, while 256 KB Flash stores graphical assets. Place the MCU on a 4-layer PCB with the PMP data bus routed as 8-bit matched traces to the LCD connector.
پیشنهادی
Audio Codec Interface (I2S Bridge)
Two I2S modules plus four SPI modules make the PIC32MX550F256L-V/PF a flexible audio bridge, routing digital audio between I2S codecs, SPI DACs, and external DSPs. The 50 MHz core sustains 48 kHz / 24-bit stereo I2S streams with headroom for DSP effects. Use the DMA controller for double-buffered I2S transfers, freeing the CPU for filtering. The PPS system lets the design engineer reassign I2S clock/data lines to any GPIO pin, easing PCB constraints versus fixed-pin MCUs.
پیشنهادی
Embedded Point-of-Sale Terminal
Point-of-sale terminals benefit from USB device connectivity, CAN for terminal networking, and the integrated CTMU for capacitive keypad scanning. The 256 KB Flash stores transaction handlers, USB HID stacks, and LCD UI fonts. The CTMU eliminates external touch-scan ASICs, reducing BOM cost. Place the MCU between a USB-connected host terminal and a CAN-connected POS network backbone, with I2S delivering audio prompts through an external DAC. The V suffix enables stable operation in -40C to +105C environments.
پیشنهادی
Sensor Hub with USB / CAN Aggregation
Aggregate multiple SPI sensors, RTCC time stamping, and a CTMU-driven touch interface, then push the data upstream via USB or CAN. The 5-channel DMA offloads sensor reads from the CPU, while the dual I2S modules route audio cues. The 32 KB SRAM holds time-stamped sensor buffers. Use the RTCC for data logging timestamps, and PPS to map interrupt-capable GPIO pins for sensor event triggers. The 100-pin TQFP gives 85 usable I/O for sensor fan-out.
پیشنهادی
USB-to-CAN Gateway Bridge
Combine the USB 2.0 Full-Speed OTG controller with the CAN 2.0B module to build a USB-to-CAN gateway used in automotive diagnostics, industrial protocol conversion, and CANopen bridges. The 50 MHz core sustains full-speed USB 12 Mbps throughput with CAN bus traffic. The 32 KB SRAM buffers USB packets during CAN bus contention. Place a TJA1050 or MCP2551 CAN transceiver on the bus, and route USB D+/D- to a USB Type-B connector with proper 15 kohm pull-down resistors.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC32MX550F256L-V/PF — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | PIC32MX550F256LT-V/PF | PIC32MX550F256L-50I/PF | PIC32MX534F064L-V/PF | PIC32MX450F256L-V/PF | PIC32MX550F256L-V/PT |
|---|---|---|---|---|---|---|
| Package | 100-pin TQFP (14x14) | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same | 100-pin TQFP (14x14) - same | 64-pin TQFP - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash | 256 KB | 256 KB | 256 KB | 64 KB | 256 KB | 256 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 8 KB | 32 KB | 32 KB |
| Core Frequency | 50 MHz | 50 MHz | 50 MHz | 80 MHz | 50 MHz | 50 MHz |
| USB | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | No USB | No USB | USB 2.0 Full-Speed OTG |
| CAN | CAN 2.0B with DeviceNet | CAN 2.0B with DeviceNet | CAN 2.0B with DeviceNet | CAN 2.0B with DeviceNet | CAN 2.0B with DeviceNet | CAN 2.0B with DeviceNet |
| Temperature Grade | -40C to +105C (V) | -40C to +105C (V) | -40C to +85C (I) | -40C to +105C (V) | -40C to +105C (V) | -40C to +105C (V) |
تفاوت‌های کلیدی
- Higher Flash density in 100-pin TQFP (در مقابلPIC32MX534F064L-V/PF)
- Integrated USB OTG controller (در مقابلPIC32MX450F256L-V/PF)
- Wider industrial temperature range (در مقابلPIC32MX550F256L-50I/PF)
یادداشت‌های طراحی
The PIC32MX550F256L-V/PF operates from 2.3V to 3.6V and requires multiple bulk decoupling capacitors on each VDD/VSS pair. Per the Microchip datasheet section on Power Requirements, place one 0.1 uF ceramic capacitor within 5 mm of every VDD pin (the 100-pin TQFP has VDD on pins 22, 32, 49, 66, 87, 88), plus a 10 uF tantalum bulk capacitor near the MCU. For USB applications, the VBUS pin (RB5) needs a 1 uF capacitor and the internal voltage regulator requires VDD/VBUSON handling for USB self-powered setups.
The PIC32MX550F256L-V/PF in 100-pin TQFP has a junction-to-ambient thermal resistance of approximately 50 C/W, so at 50 MHz full activity with all peripherals active, the die dissipates well under 100 mW and no heatsink is required. Estimated: at 70 mA active current at 3.3V, the chip dissipates 0.23 W, yielding roughly 12 C junction rise above 25 C ambient - well within the -40C to +105C operating range.
Route the USB D+ (RG2) and D- (RG3) differential pair with 90 ohm differential impedance and equal trace lengths within 2 mm of each other to comply with USB 2.0 Full-Speed signal-integrity requirements. Place the 12 MHz (or 8 MHz depending on PLL) crystal close to the OSC1/OSC2 pins with matching-trace layout, and add 22 pF load capacitors to ground. The PMP data bus (RD0-RD7, RD8-RD15) should be routed as byte-aligned matched traces to the LCD connector.
Common mistakes with the PIC32MX550F256L-V/PF include forgetting the ICSP programming connections (PGED1/PGEC1 on RG13/RG14), failing to set the correct PLL configuration for 50 MHz from an external 8 MHz crystal, and overlooking the VBUS-on handling required when running USB in self-powered mode. Also verify that the JTAG TMS/TCK pins (RA0/RA1) are not pulled low at reset if JTAG is not used. Programming requires a Microchip PICkit, ICD, or MPLAB Snap debugger.
اطلاعات انطباق
RoHS compliant per Microchip product page. Standard V-temp variant is not AEC-Q100 qualified - look at PIC32MX5xx Q-grade parts for automotive.
