PIC32MX550F256L-V/PF - 32-bit MCU, 256KB Flash, USB/CAN | Microchip
MPN: PIC32MX550F256L-V/PF ✓ نشطPIC32MX550F256L-V/PF نظرة عامة
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.
بدائل مباشرة لـ PIC32MX550F256L-V/PF — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC32MX550F256L-V/PF (نفس عامل الشكل والبصمة) — يختلف في Core Architecture, ADC, Package, CAN, USB.
PIC32MX550F256LT-V/PF
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC32MX550F256L-V/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC32MX550F256L-50I/PF
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC32MX550F256L-50I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC32MX534F064L-V/PF
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC32MX450F256L-V/PF
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC32MX550F256L-V/PF الحدود القصوى والخصائص الكهربائية
| 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) |
| العلبة | 100-pin TQFP (14x14 mm) |
| نوع التركيب | Surface Mount |
| RoHS | Compliant |
تكوين أطراف PIC32MX550F256L-V/PF
| دبوس 1 | RG15 — Port RG15 I/O pin |
| دبوس 2 | VSS — Ground reference |
| دبوس 3 | RD0 — Port RD0 / PMD0 / INT0 |
| دبوس 4 | RD1 — Port RD1 / PMD1 |
| دبوس 5 | RD2 — Port RD2 / PMD2 |
| دبوس 6 | RD3 — Port RD3 / PMD3 |
| دبوس 7 | RD4 — Port RD4 / PMD4 |
| دبوس 8 | RD5 — Port RD5 / PMD5 |
| دبوس 9 | RD6 — Port RD6 / PMD6 |
| دبوس 10 | RD7 — Port RD7 / PMD7 |
| دبوس 11 | VSS — Ground reference |
| دبوس 12 | RC13 — Port RC13 I/O |
| دبوس 13 | RC14 — Port RC14 I/O |
| دبوس 14 | RB0 — Port RB0 / PGED3 / AN0 |
| دبوس 15 | RB1 — Port RB1 / PGEC3 / AN1 |
| دبوس 16 | RB2 — Port RB2 / AN2 |
| دبوس 17 | RB3 — Port RB3 / AN3 |
| دبوس 18 | RB4 — Port RB4 / AN4 |
| دبوس 19 | RB5 — Port RB5 / AN5 / VBUS |
| دبوس 20 | RB6 — Port RB6 / AN6 / OC1 |
| دبوس 21 | RB7 — Port RB7 / AN7 |
| دبوس 22 | VDD — Positive supply 2.3-3.6V |
| دبوس 23 | VSS — Ground reference |
| دبوس 24 | RA9 — Port RA9 I/O |
| دبوس 25 | RA10 — Port RA10 I/O |
| دبوس 26 | RA0 — Port RA0 / TMS |
| دبوس 27 | RA1 — Port RA1 / TCK |
| دبوس 28 | RA2 — Port RA2 / SDA2 |
| دبوس 29 | RA3 — Port RA3 / SCL2 |
| دبوس 30 | RA4 — Port RA4 I/O |
| دبوس 31 | RA5 — Port RA5 I/O |
| دبوس 32 | VDD — Positive supply 2.3-3.6V |
| دبوس 33 | VSS — Ground reference |
| دبوس 34 | RB8 — Port RB8 / OC2 |
| دبوس 35 | RB9 — Port RB9 / IC2 |
| دبوس 36 | RB10 — Port RB10 I/O |
| دبوس 37 | RB11 — Port RB11 I/O |
| دبوس 38 | RB12 — Port RB12 I/O |
| دبوس 39 | RB13 — Port RB13 I/O |
| دبوس 40 | RB14 — Port RB14 / VBUSON |
| دبوس 41 | RB15 — Port RB15 / OCFB |
| دبوس 42 | VSS — Ground reference |
| دبوس 43 | RF0 — Port RF0 |
| دبوس 44 | RF1 — Port RF1 |
| دبوس 45 | RF2 — Port RF2 / SDA1 |
| دبوس 46 | RF3 — Port RF3 / SCL1 |
| دبوس 47 | RF4 — Port RF4 / OC4 |
| دبوس 48 | RF5 — Port RF5 / SDO1 |
| دبوس 49 | VDD — Positive supply 2.3-3.6V |
| دبوس 50 | VSS — Ground reference |
| دبوس 51 | RF6 — Port RF6 / SCK1 |
| دبوس 52 | RF7 — Port RF7 / U1CTS |
| دبوس 53 | RF8 — Port RF8 / U1RTS |
| دبوس 54 | RF9 — Port RF9 / U2CTS |
| دبوس 55 | RF10 — Port RF10 / U2RTS |
| دبوس 56 | RF11 — Port RF11 / U3CTS |
| دبوس 57 | RF12 — Port RF12 / U3RTS |
| دبوس 58 | RF13 — Port RF13 / U4CTS |
| دبوس 59 | RF14 — Port RF14 / U4RTS |
| دبوس 60 | RF15 — Port RF15 / U5CTS |
| دبوس 61 | VSS — Ground reference |
| دبوس 62 | RG6 — Port RG6 / SCK2 |
| دبوس 63 | RG7 — Port RG7 / SDO2 |
| دبوس 64 | RG8 — Port RG8 / SDI2 |
| دبوس 65 | RG9 — Port RG9 / SS2 |
| دبوس 66 | VDD — Positive supply 2.3-3.6V |
| دبوس 67 | RC1 — Port RC1 / OC1 |
| دبوس 68 | RC2 — Port RC2 / OC2 |
| دبوس 69 | RC3 — Port RC3 / OC3 |
| دبوس 70 | RC4 — Port RC4 / SDI1 |
| دبوس 71 | VSS — Ground reference |
| دبوس 72 | RD8 — Port RD8 / PMA0 |
| دبوس 73 | RD9 — Port RD9 / PMA1 |
| دبوس 74 | RD10 — Port RD10 / PMA2 |
| دبوس 75 | RD11 — Port RD11 / PMA3 |
| دبوس 76 | RD12 — Port RD12 / PMA4 |
| دبوس 77 | RD13 — Port RD13 / PMA5 |
| دبوس 78 | RD14 — Port RD14 / PMA6 |
| دبوس 79 | RD15 — Port RD15 / PMA7 |
| دبوس 80 | VSS — Ground reference |
| دبوس 81 | RE0 — Port RE0 / PMRD |
| دبوس 82 | RE1 — Port RE1 / PMWR |
| دبوس 83 | RE2 — Port RE2 / CS1 |
| دبوس 84 | RE3 — Port RE3 / CS2 |
| دبوس 85 | RE4 — Port RE4 / AER |
| دبوس 86 | RE5 — Port RE5 / ALR |
| دبوس 87 | VDD — Positive supply 2.3-3.6V |
| دبوس 88 | VDD — Positive supply 2.3-3.6V |
| دبوس 89 | RG0 — Port RG0 / C1RX |
| دبوس 90 | RG1 — Port RG1 / C1TX |
| دبوس 91 | RG2 — Port RG2 / DMI |
| دبوس 92 | RG3 — Port RG3 / DPO |
| دبوس 93 | RA6 — Port RA6 / TRCLK |
| دبوس 94 | RA7 — Port RA7 / TRD0 |
| دبوس 95 | VSS — Ground reference |
| دبوس 96 | RG14 — Port RG14 / SDA3 |
| دبوس 97 | RG12 — Port RG12 / SCL3 |
| دبوس 98 | RG13 — Port RG13 / SDA4 |
| دبوس 99 | RG10 — Port RG10 / SCL4 |
| دبوس 100 | RG11 — Port RG11 / U5RTS |
التطبيقات النموذجية
PIC32MX550F256L-V/PF مناسب لـ 7 التطبيقs: 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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
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.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC32MX550F256L-V/PF — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | 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) |
أبرز الفروقات
- Higher Flash density in 100-pin TQFP (مقابلPIC32MX534F064L-V/PF)
- Integrated USB OTG controller (مقابلPIC32MX450F256L-V/PF)
- Wider industrial temperature range (مقابلPIC32MX550F256L-50I/PF)
ملاحظات التصميم
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.
معلومات الامتثال
RoHS compliant per Microchip product page. Standard V-temp variant is not AEC-Q100 qualified - look at PIC32MX5xx Q-grade parts for automotive.
