PIC32MX550F256L-V/PF - 32-bit MCU, 256KB Flash, USB/CAN | Microchip
MPN: PIC32MX550F256L-V/PF ✓ פעילPIC32MX550F256L-V/PF סקירה
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.
חלופות תחליף ישיר עבור PIC32MX550F256L-V/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 PIC32MX550F256L-V/PF (אותו גורם צורה וטביעת רגל) — שונים ב Core Architecture, ADC, Package, CAN, USB.
PIC32MX550F256LT-V/PF
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC32MX550F256L-V/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC32MX550F256L-50I/PF
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC32MX550F256L-50I/PT
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC32MX534F064L-V/PF
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC32MX450F256L-V/PF
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC32MX550F256L-V/PF דירוגים מרביים ומאפיינים חשמליים
| 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) |
| מארז | 100-pin TQFP (14x14 mm) |
| סוג הרכבה | Surface Mount |
| RoHS | Compliant |
תצורת פינים של PIC32MX550F256L-V/PF
| פין 1 | RG15 — Port RG15 I/O pin |
| פין 2 | VSS — Ground reference |
| פין 3 | RD0 — Port RD0 / PMD0 / INT0 |
| פין 4 | RD1 — Port RD1 / PMD1 |
| פין 5 | RD2 — Port RD2 / PMD2 |
| פין 6 | RD3 — Port RD3 / PMD3 |
| פין 7 | RD4 — Port RD4 / PMD4 |
| פין 8 | RD5 — Port RD5 / PMD5 |
| פין 9 | RD6 — Port RD6 / PMD6 |
| פין 10 | RD7 — Port RD7 / PMD7 |
| פין 11 | VSS — Ground reference |
| פין 12 | RC13 — Port RC13 I/O |
| פין 13 | RC14 — Port RC14 I/O |
| פין 14 | RB0 — Port RB0 / PGED3 / AN0 |
| פין 15 | RB1 — Port RB1 / PGEC3 / AN1 |
| פין 16 | RB2 — Port RB2 / AN2 |
| פין 17 | RB3 — Port RB3 / AN3 |
| פין 18 | RB4 — Port RB4 / AN4 |
| פין 19 | RB5 — Port RB5 / AN5 / VBUS |
| פין 20 | RB6 — Port RB6 / AN6 / OC1 |
| פין 21 | RB7 — Port RB7 / AN7 |
| פין 22 | VDD — Positive supply 2.3-3.6V |
| פין 23 | VSS — Ground reference |
| פין 24 | RA9 — Port RA9 I/O |
| פין 25 | RA10 — Port RA10 I/O |
| פין 26 | RA0 — Port RA0 / TMS |
| פין 27 | RA1 — Port RA1 / TCK |
| פין 28 | RA2 — Port RA2 / SDA2 |
| פין 29 | RA3 — Port RA3 / SCL2 |
| פין 30 | RA4 — Port RA4 I/O |
| פין 31 | RA5 — Port RA5 I/O |
| פין 32 | VDD — Positive supply 2.3-3.6V |
| פין 33 | VSS — Ground reference |
| פין 34 | RB8 — Port RB8 / OC2 |
| פין 35 | RB9 — Port RB9 / IC2 |
| פין 36 | RB10 — Port RB10 I/O |
| פין 37 | RB11 — Port RB11 I/O |
| פין 38 | RB12 — Port RB12 I/O |
| פין 39 | RB13 — Port RB13 I/O |
| פין 40 | RB14 — Port RB14 / VBUSON |
| פין 41 | RB15 — Port RB15 / OCFB |
| פין 42 | VSS — Ground reference |
| פין 43 | RF0 — Port RF0 |
| פין 44 | RF1 — Port RF1 |
| פין 45 | RF2 — Port RF2 / SDA1 |
| פין 46 | RF3 — Port RF3 / SCL1 |
| פין 47 | RF4 — Port RF4 / OC4 |
| פין 48 | RF5 — Port RF5 / SDO1 |
| פין 49 | VDD — Positive supply 2.3-3.6V |
| פין 50 | VSS — Ground reference |
| פין 51 | RF6 — Port RF6 / SCK1 |
| פין 52 | RF7 — Port RF7 / U1CTS |
| פין 53 | RF8 — Port RF8 / U1RTS |
| פין 54 | RF9 — Port RF9 / U2CTS |
| פין 55 | RF10 — Port RF10 / U2RTS |
| פין 56 | RF11 — Port RF11 / U3CTS |
| פין 57 | RF12 — Port RF12 / U3RTS |
| פין 58 | RF13 — Port RF13 / U4CTS |
| פין 59 | RF14 — Port RF14 / U4RTS |
| פין 60 | RF15 — Port RF15 / U5CTS |
| פין 61 | VSS — Ground reference |
| פין 62 | RG6 — Port RG6 / SCK2 |
| פין 63 | RG7 — Port RG7 / SDO2 |
| פין 64 | RG8 — Port RG8 / SDI2 |
| פין 65 | RG9 — Port RG9 / SS2 |
| פין 66 | VDD — Positive supply 2.3-3.6V |
| פין 67 | RC1 — Port RC1 / OC1 |
| פין 68 | RC2 — Port RC2 / OC2 |
| פין 69 | RC3 — Port RC3 / OC3 |
| פין 70 | RC4 — Port RC4 / SDI1 |
| פין 71 | VSS — Ground reference |
| פין 72 | RD8 — Port RD8 / PMA0 |
| פין 73 | RD9 — Port RD9 / PMA1 |
| פין 74 | RD10 — Port RD10 / PMA2 |
| פין 75 | RD11 — Port RD11 / PMA3 |
| פין 76 | RD12 — Port RD12 / PMA4 |
| פין 77 | RD13 — Port RD13 / PMA5 |
| פין 78 | RD14 — Port RD14 / PMA6 |
| פין 79 | RD15 — Port RD15 / PMA7 |
| פין 80 | VSS — Ground reference |
| פין 81 | RE0 — Port RE0 / PMRD |
| פין 82 | RE1 — Port RE1 / PMWR |
| פין 83 | RE2 — Port RE2 / CS1 |
| פין 84 | RE3 — Port RE3 / CS2 |
| פין 85 | RE4 — Port RE4 / AER |
| פין 86 | RE5 — Port RE5 / ALR |
| פין 87 | VDD — Positive supply 2.3-3.6V |
| פין 88 | VDD — Positive supply 2.3-3.6V |
| פין 89 | RG0 — Port RG0 / C1RX |
| פין 90 | RG1 — Port RG1 / C1TX |
| פין 91 | RG2 — Port RG2 / DMI |
| פין 92 | RG3 — Port RG3 / DPO |
| פין 93 | RA6 — Port RA6 / TRCLK |
| פין 94 | RA7 — Port RA7 / TRD0 |
| פין 95 | VSS — Ground reference |
| פין 96 | RG14 — Port RG14 / SDA3 |
| פין 97 | RG12 — Port RG12 / SCL3 |
| פין 98 | RG13 — Port RG13 / SDA4 |
| פין 99 | RG10 — Port RG10 / SCL4 |
| פין 100 | RG11 — Port RG11 / U5RTS |
יישומים טיפוסיים
PIC32MX550F256L-V/PF מתאים עבור 7 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC32MX550F256L-V/PF — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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) |
מבדילים עיקריים
- Higher Flash density in 100-pin TQFP (לעומתPIC32MX534F064L-V/PF)
- Integrated USB OTG controller (לעומתPIC32MX450F256L-V/PF)
- Wider industrial temperature range (לעומתPIC32MX550F256L-50I/PF)
הערות תכנון
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.
מידע על תאימות
RoHS compliant per Microchip product page. Standard V-temp variant is not AEC-Q100 qualified - look at PIC32MX5xx Q-grade parts for automotive.
