PIC32MX795F512LT-80V/PF - 80MHz 32-bit MCU 512KB Flash | Microchip
MPN: PIC32MX795F512LT-80V/PF ✓ Hoạt độngPIC32MX795F512LT-80V/PF Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals such as timers, ADCs, and communication interfaces. The PIC32 family from Microchip sits in the 32-bit MCU hierarchy: microcontroller -> 32-bit MCU -> MIPS-based MCU -> PIC32MX family, and is widely used in industrial control, IoT gateways, and USB-connected embedded products where deterministic real-time performance and a broad peripheral mix are required.
Key specifications include 512KB program Flash (plus 12KB auxiliary Flash), 128KB SRAM, a 5-channel DMA controller, sixteen 10-bit ADC inputs with up to 1Msps conversion, and a parallel master port for external bus expansion. The device supports 2.3V to 3.6V single-supply operation and includes a Fail-Safe Clock Monitor with multiple power management modes (Idle, Sleep, Deep Sleep) to optimize energy consumption in always-on designs.
Architecturally, the PIC32MX795F512L uses the MIPS32 M4K core with single-cycle hardware multiply/divide, a 5-stage pipeline, and tightly-coupled peripherals serviced through an 8-channel DMA engine. USB 2.0 Full-Speed OTG with integrated PHY, 10/100 Ethernet MAC, and dual CAN 2.0B controllers make this part well suited for protocol-rich industrial nodes. The 100-pin TQFP exposes 85 user I/O lines with flexible remappable peripheral pins via Peripheral Pin Select (PPS).
Typical applications include industrial Ethernet gateways, CAN-bus motor controllers, USB HID/CDC device controllers, building automation nodes, and graphics HMI panels using the parallel master port. The wide peripheral mix replaces multi-chip discrete designs in cost-sensitive industrial products.
When designing with this part, attention must be paid to the VCAP pin: a low-ESR 10uF ceramic capacitor (per datasheet) must be placed within 0.25 inch of the pin for the internal 1.8V regulator stability. Decouple every VDD/VSS pair with 0.1uF plus bulk capacitance, and route the 80MHz crystal traces as short and symmetric as possible to avoid EMI and startup failures.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX795F512LT-80V/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 PIC32MX795F512LT-80V/PF (cùng hình factor và footprint) — khác nhau ở Package, USB, ADC, DMA Channels, CAN.
PIC32MX795F512L-80V/PF
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PIC32MX775F512LT-80I/PF
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Xem tài liệu →PIC32MX795F512LT-80V/BG
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Xem tài liệu →PIC32MX795F512LT-80V/PF Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K |
| Bề rộng đường dữ liệu | 32-bit |
| Tần số xung maksimum | 80 MHz |
| Program Memory Size | 512 KB Flash (plus 12 KB auxiliary Flash) |
| SRAM Size | 128 KB |
| Supply Voltage Range | 2.3 V to 3.6 V |
| Khoảng nhiệt độ hoạt động | -40 C to +105 C (V-grade) |
| User I/O Pins | 85 |
| Number of I/O Ports | 51 |
| ADC | 10-bit, 16 channels, up to 1 Msps |
| DMA Channels | 8 |
| USB | USB 2.0 Full-Speed OTG with on-chip transceiver |
| Ethernet | 10/100 Mbit MAC (MII/RMII interface) |
| CAN | 2x CAN 2.0B controllers |
| UART | 6 |
| I2C | 5 |
| SPI | 4 |
| Hộp | 100-pin TQFP (14x14 mm), PF suffix |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant (Pb-free) |
| Cấp MSL | 3 |
| Lead-Free | Yes |
Hướng dẫn cấu hình chân PIC32MX795F512LT-80V/PF 100-pin tqfp (14x14 mm), pf suffix
Cấu hình chân cho PIC32MX795F512LT-80V/PF (100-pin tqfp (14x14 mm), pf suffix gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho PIC32MX795F512LT-80V/PF.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
PIC32MX795F512LT-80V/PF phù hợp cho 6 Áp dụngs: Industrial Ethernet Gateway, USB HID / CDC Device Controller, CAN-Bus Motor Controller Node, Building Automation Controller, Graphics HMI / Operator Panel, IoT Edge Sensor Hub.
Industrial Ethernet Gateway
The PIC32MX795F512LT-80V/PF is well suited for industrial Ethernet gateway designs requiring deterministic TCP/IP communication alongside legacy fieldbus bridging. Its integrated 10/100 MAC with MII/RMII interface connects to standard PHYs like the LAN8720, while the 80MHz MIPS32 M4K core runs Microchip's free TCP/IP stack with sufficient headroom for Modbus TCP, EtherNet/IP, or PROFINET slave protocols. The 128KB SRAM accommodates concurrent TCP socket buffers plus application logic, and the dual CAN 2.0B controllers enable gateway bridging to CANopen or DeviceNet networks. The V-grade temperature range (-40C to +105C) supports deployment in factory-floor enclosures without additional thermal management. Engineers typically pair this MCU with an external PHY, a 25MHz crystal, and isolated RS-485 transceivers for a complete substation or PLC communication module.
Được đề xuất
USB HID / CDC Device Controller
USB 2.0 Full-Speed OTG with on-chip transceiver makes this PIC32MX part ideal for USB HID keyboards/mice, CDC virtual COM ports, and USB audio class devices. The 80MHz core handles HID report parsing and CDC line-coding state machines without external PHY or bridge chips. With 512KB Flash, engineers can integrate USB stacks, command parsers, and application firmware in a single part. The on-chip pull-up resistors on D+/D- lines (configured via software) simplify BOM cost. Common designs include USB barcode scanners, custom test instruments, and configuration dongles. The 6 UARTs also support bridging USB-CDC to RS-232/RS-485 for industrial configuration tools, with the V-grade temperature range supporting field-deployed devices.
Được đề xuất
CAN-Bus Motor Controller Node
For multi-axis motor controllers and field-oriented control (FOC) drives, PIC32MX795F512LT-80V/PF delivers the 80MHz MIPS performance plus dual CAN 2.0B interfaces needed to communicate with industrial drives and inverters. The 16-channel 10-bit ADC at 1Msps samples current shunts and back-EMF signals, while dedicated PWM/OC peripherals generate complementary switching waveforms for 3-phase bridges. The 8 DMA channels offload repetitive ADC-to-PWM transfers, freeing the CPU for control loops. With 85 I/O lines via Peripheral Pin Select (PPS), designers can re-route UART, SPI, and I2C pins without package variant changes, simplifying PCB routing in compact DIN-rail enclosures. Typical applications include CNC spindle controllers, robotic arm nodes, and AGV drive controllers in industrial automation.
Được đề xuất
Building Automation Controller
Building automation systems combine multiple fieldbuses, and the PIC32MX795F512LT-80V/PF integrates Ethernet, dual CAN, and 6 UARTs to bridge BACnet/IP, KNX, and Modbus networks in a single chip. The 512KB Flash holds BACnet stack plus custom automation logic, and the 128KB SRAM manages concurrent socket buffers for trending and alarm notifications. The -40C to +105C operating range supports installation in unheated utility rooms. With 5 I2C and 4 SPI buses, the MCU also interfaces to HVAC sensors, light dimmers, and motorized valve actuators. The 80MHz MIPS32 M4K core processes PID loops for temperature and airflow control at sub-millisecond latency, making it a strong fit for rooftop unit controllers, VAV box controllers, and central plant management stations.
Được đề xuất
Graphics HMI / Operator Panel
The Parallel Master Port (PMP) on PIC32MX795F512LT-80V/PF interfaces directly to TFT LCD controllers and external graphics memory, supporting small to medium-resolution HMI panels used in industrial operator interfaces. The 80MHz core plus 128KB SRAM drives QVGA/WQVGA color displays with button and rotary encoder inputs. Engineers typically connect the PMP to an SSD1963, ILI9341, or RA8875 controller and overlay Modbus or CANopen communications for machine control. The USB OTG port enables firmware updates and configuration export via USB stick. The 85 I/O lines accommodate capacitive touch controllers, status LEDs, and keypad matrices. With 512KB Flash, HMI graphics libraries, font tables, and multilingual strings fit comfortably.
Được đề xuất
IoT Edge Sensor Hub
For IoT edge nodes aggregating multiple sensors and forwarding data to cloud services, PIC32MX795F512LT-80V/PF combines Ethernet, USB, and CAN connectivity with 16 ADC channels and rich serial interfaces in a single MCU. The 80MHz MIPS32 core runs TLS/DTLS handshake and lightweight MQTT clients, while 8 DMA channels autonomously sample ADC and forward data over Ethernet without CPU intervention. The 5 I2C buses connect multiple temperature, humidity, and pressure sensors simultaneously, and 4 SPI buses interface to higher-speed devices like accelerometers and gas sensors. Power management modes (Idle, Sleep, Deep Sleep) with the Fail-Safe Clock Monitor reduce average current consumption for battery-backed installations. Typical deployments include environmental monitoring stations, smart agriculture sensor hubs, and predictive maintenance gateways.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX795F512LT-80V/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 | PIC32MX795F512L-80V/PF | PIC32MX795F512LT-80I/PF | PIC32MX775F512LT-80I/PF |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-100 (14x14 mm) | TQFP-100 (14x14 mm) - same | TQFP-100 (14x14 mm) - same | TQFP-100 (14x14 mm) - same |
| Maximum Clock Frequency | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Program Flash | 512 KB | 512 KB | 512 KB | 512 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB |
| Ethernet MAC | 10/100 Mbit (MII/RMII) | 10/100 Mbit (MII/RMII) | 10/100 Mbit (MII/RMII) | Not integrated |
| USB | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG |
| CAN 2.0B Controllers | 2 | 2 | 2 | 2 |
| Operating Temperature | -40 C to +105 C (V-grade) | -40 C to +105 C (V-grade) | -40 C to +85 C (I-grade) | -40 C to +85 C (I-grade) |
Bảo phân biệt quan trọng
- Integrated Ethernet MAC plus USB OTG plus dual CAN in one MCU (vsPIC32MX775F512LT-80I/PF)
- V-grade operating temperature (-40C to +105C) (vsPIC32MX795F512LT-80I/PF)
- Tape and Reel packaging for high-volume SMT assembly (vsPIC32MX795F512L-80V/PF)
Ghi chú thiết kế
VCAP pin requires a low-ESR 10uF ceramic capacitor placed within 0.25 inch (6mm) of the pin to stabilize the internal 1.8V core regulator. Omitting this capacitor or using high-ESR types causes core voltage instability, brown-out resets, and erratic Flash programming. Decouple every VDD/VSS pair with a 0.1uF ceramic plus bulk capacitance, and tie all VSS pins to a continuous ground plane for lowest EMI.
Route the 80MHz primary crystal traces (POSC1/POSC2) as short and symmetric as possible, with ground guard traces on both sides and a ground plane below. Keep crystal traces away from switching signals and PWM outputs to avoid injection-locking or EMI. Place the load capacitors within 0.2 inch of the crystal pins and use a star-ground connection to the MCU ground pin to minimize ground bounce.
Do not leave PPS (Peripheral Pin Select) registers in their default state after programming - they reset to GPIO input on every POR. Always configure PPS in firmware immediately after each reset to ensure peripheral functions appear on the expected pins. Also, the Ethernet MAC requires a 25MHz reference clock on the ERCLK pin when using RMII; without it the PHY link will fail silently.
At 80MHz with both Ethernet and USB active, the PIC32MX795F512LT-80V/PF draws approximately 70-90mA from VDD, dissipating around 0.25-0.32W in the 100-pin TQFP. The TQFP-100 package with theta_JA ~45 C/W on a 4-layer PCB provides adequate cooling without heatsinks. For sealed enclosures with no airflow, derate ambient by 10-15C or reduce clock to 60MHz.
Thông tin tuân thủ
RoHS compliant per Microchip product page (PF suffix = Pb-free). V-grade temperature range supports industrial applications but is not AEC-Q100 qualified - for automotive designs use AEC-Q100 qualified PIC32MK or dsPIC33 families instead.
