PIC32MX550F256L-V/PF - 32-bit MCU, 256KB Flash, USB/CAN | Microchip
MPN: PIC32MX550F256L-V/PF ✓ Hoạt độngPIC32MX550F256L-V/PF Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX550F256L-V/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 PIC32MX550F256L-V/PF (cùng hình factor và footprint) — khác nhau ở Core Architecture, ADC, Package, CAN, USB.
PIC32MX550F256LT-V/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX550F256L-V/PT
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Xem tài liệu →PIC32MX550F256L-50I/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX550F256L-50I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX534F064L-V/PF
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX450F256L-V/PF
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Xem tài liệu →PIC32MX550F256L-V/PF Tỷ lệ tối đa & tính chất điện
| 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) |
| Hộp | 100-pin TQFP (14x14 mm) |
| Kiểu lắp đặt | Surface Mount |
| RoHS | Compliant |
Cấu hình chân PIC32MX550F256L-V/PF
| Chân 1 | RG15 — Port RG15 I/O pin |
| Chân 2 | VSS — Ground reference |
| Chân 3 | RD0 — Port RD0 / PMD0 / INT0 |
| Chân 4 | RD1 — Port RD1 / PMD1 |
| Chân 5 | RD2 — Port RD2 / PMD2 |
| Chân 6 | RD3 — Port RD3 / PMD3 |
| Chân 7 | RD4 — Port RD4 / PMD4 |
| Chân 8 | RD5 — Port RD5 / PMD5 |
| Chân 9 | RD6 — Port RD6 / PMD6 |
| Chân 10 | RD7 — Port RD7 / PMD7 |
| Chân 11 | VSS — Ground reference |
| Chân 12 | RC13 — Port RC13 I/O |
| Chân 13 | RC14 — Port RC14 I/O |
| Chân 14 | RB0 — Port RB0 / PGED3 / AN0 |
| Chân 15 | RB1 — Port RB1 / PGEC3 / AN1 |
| Chân 16 | RB2 — Port RB2 / AN2 |
| Chân 17 | RB3 — Port RB3 / AN3 |
| Chân 18 | RB4 — Port RB4 / AN4 |
| Chân 19 | RB5 — Port RB5 / AN5 / VBUS |
| Chân 20 | RB6 — Port RB6 / AN6 / OC1 |
| Chân 21 | RB7 — Port RB7 / AN7 |
| Chân 22 | VDD — Positive supply 2.3-3.6V |
| Chân 23 | VSS — Ground reference |
| Chân 24 | RA9 — Port RA9 I/O |
| Chân 25 | RA10 — Port RA10 I/O |
| Chân 26 | RA0 — Port RA0 / TMS |
| Chân 27 | RA1 — Port RA1 / TCK |
| Chân 28 | RA2 — Port RA2 / SDA2 |
| Chân 29 | RA3 — Port RA3 / SCL2 |
| Chân 30 | RA4 — Port RA4 I/O |
| Chân 31 | RA5 — Port RA5 I/O |
| Chân 32 | VDD — Positive supply 2.3-3.6V |
| Chân 33 | VSS — Ground reference |
| Chân 34 | RB8 — Port RB8 / OC2 |
| Chân 35 | RB9 — Port RB9 / IC2 |
| Chân 36 | RB10 — Port RB10 I/O |
| Chân 37 | RB11 — Port RB11 I/O |
| Chân 38 | RB12 — Port RB12 I/O |
| Chân 39 | RB13 — Port RB13 I/O |
| Chân 40 | RB14 — Port RB14 / VBUSON |
| Chân 41 | RB15 — Port RB15 / OCFB |
| Chân 42 | VSS — Ground reference |
| Chân 43 | RF0 — Port RF0 |
| Chân 44 | RF1 — Port RF1 |
| Chân 45 | RF2 — Port RF2 / SDA1 |
| Chân 46 | RF3 — Port RF3 / SCL1 |
| Chân 47 | RF4 — Port RF4 / OC4 |
| Chân 48 | RF5 — Port RF5 / SDO1 |
| Chân 49 | VDD — Positive supply 2.3-3.6V |
| Chân 50 | VSS — Ground reference |
| Chân 51 | RF6 — Port RF6 / SCK1 |
| Chân 52 | RF7 — Port RF7 / U1CTS |
| Chân 53 | RF8 — Port RF8 / U1RTS |
| Chân 54 | RF9 — Port RF9 / U2CTS |
| Chân 55 | RF10 — Port RF10 / U2RTS |
| Chân 56 | RF11 — Port RF11 / U3CTS |
| Chân 57 | RF12 — Port RF12 / U3RTS |
| Chân 58 | RF13 — Port RF13 / U4CTS |
| Chân 59 | RF14 — Port RF14 / U4RTS |
| Chân 60 | RF15 — Port RF15 / U5CTS |
| Chân 61 | VSS — Ground reference |
| Chân 62 | RG6 — Port RG6 / SCK2 |
| Chân 63 | RG7 — Port RG7 / SDO2 |
| Chân 64 | RG8 — Port RG8 / SDI2 |
| Chân 65 | RG9 — Port RG9 / SS2 |
| Chân 66 | VDD — Positive supply 2.3-3.6V |
| Chân 67 | RC1 — Port RC1 / OC1 |
| Chân 68 | RC2 — Port RC2 / OC2 |
| Chân 69 | RC3 — Port RC3 / OC3 |
| Chân 70 | RC4 — Port RC4 / SDI1 |
| Chân 71 | VSS — Ground reference |
| Chân 72 | RD8 — Port RD8 / PMA0 |
| Chân 73 | RD9 — Port RD9 / PMA1 |
| Chân 74 | RD10 — Port RD10 / PMA2 |
| Chân 75 | RD11 — Port RD11 / PMA3 |
| Chân 76 | RD12 — Port RD12 / PMA4 |
| Chân 77 | RD13 — Port RD13 / PMA5 |
| Chân 78 | RD14 — Port RD14 / PMA6 |
| Chân 79 | RD15 — Port RD15 / PMA7 |
| Chân 80 | VSS — Ground reference |
| Chân 81 | RE0 — Port RE0 / PMRD |
| Chân 82 | RE1 — Port RE1 / PMWR |
| Chân 83 | RE2 — Port RE2 / CS1 |
| Chân 84 | RE3 — Port RE3 / CS2 |
| Chân 85 | RE4 — Port RE4 / AER |
| Chân 86 | RE5 — Port RE5 / ALR |
| Chân 87 | VDD — Positive supply 2.3-3.6V |
| Chân 88 | VDD — Positive supply 2.3-3.6V |
| Chân 89 | RG0 — Port RG0 / C1RX |
| Chân 90 | RG1 — Port RG1 / C1TX |
| Chân 91 | RG2 — Port RG2 / DMI |
| Chân 92 | RG3 — Port RG3 / DPO |
| Chân 93 | RA6 — Port RA6 / TRCLK |
| Chân 94 | RA7 — Port RA7 / TRD0 |
| Chân 95 | VSS — Ground reference |
| Chân 96 | RG14 — Port RG14 / SDA3 |
| Chân 97 | RG12 — Port RG12 / SCL3 |
| Chân 98 | RG13 — Port RG13 / SDA4 |
| Chân 99 | RG10 — Port RG10 / SCL4 |
| Chân 100 | RG11 — Port RG11 / U5RTS |
Ứng dụng tiêu biểu
PIC32MX550F256L-V/PF phù hợp cho 7 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX550F256L-V/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 | 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) |
Bảo phân biệt quan trọng
- Higher Flash density in 100-pin TQFP (vsPIC32MX534F064L-V/PF)
- Integrated USB OTG controller (vsPIC32MX450F256L-V/PF)
- Wider industrial temperature range (vsPIC32MX550F256L-50I/PF)
Ghi chú thiết kế
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.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Standard V-temp variant is not AEC-Q100 qualified - look at PIC32MX5xx Q-grade parts for automotive.
