PIC32MX795F512LT-80I/TL - 32-Bit 80MHz MCU 512KB | Microchip
料号： PIC32MX795F512LT-80I/TL ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $10.88 | $10.88 |
| 10 | $9.79 | $97.90 |
| 100 | $8.7 | $870.00 |
| 500 | $7.62 | $3,810.00 |
| 1,000 | $6.53 | $6,530.00 |
PIC32MX795F512LT-80I/TL 概述
A microcontroller unit (MCU) is a self-contained computer on a single chip that combines a processor core, program memory, data memory, and configurable peripherals. The PIC32MX795F512L sits in the 32-bit MCU class, above 8-bit and 16-bit devices, and below application processors such as the Cortex-A family. Within the Microchip PIC32MX5/6/7 series, it is the connectivity flagship, adding Ethernet MAC and dual CAN to the MIPS32 M4K pipeline.
Key differentiators include the integrated 10/100 Ethernet MAC with dedicated DMA, USB 2.0 full-speed OTG with an on-chip transceiver, dual CAN 2.0B modules, and 16-channel 10-bit ADC sampling at 1 Msps. The 512 KB Flash and 128 KB SRAM support RTOS-based applications and TCP/IP stacks without external memory.
The M4K core uses a 5-stage pipeline with a single-cycle 32x16 MAC, delivering 1.56 DMIPS/MHz. The peripheral pin select (PPS) feature remaps digital I/O to reduce PCB routing constraints, while the 8-channel DMA controller offloads data movement from the CPU.
Typical applications include industrial Ethernet gateways, CAN-to-Ethernet protocol bridges, motor control with field-oriented control, USB device/host instrumentation, and building automation controllers. The 2.3 V to 3.6 V operating range and -40C to +85C industrial temperature grade suit factory-floor environments.
When designing with this device, place the 0.1 uF decoupling capacitors within 5 mm of each VDD pin and keep the Ethernet differential pairs at 100 ohm impedance. The VTLA package requires a reflow profile matched to its exposed pad for reliable thermal and electrical grounding.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers a single reference for selection, replacement, and layout decisions.
直接替换替代料： PIC32MX795F512LT-80I/TL ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC32MX795F512LT-80I/TL （相同外形与封装尺寸） ——差异在于 ADC, USB, Package, Ethernet, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC32MX795F512L-80I/TL
✅ 直接替换✓ 有现货
$7.8 / 个
查看数据手册 →PIC32MX695F512LT-80I/TL
✅ 直接替换✓ 有现货
$8.45 / 个
查看数据手册 →PIC32MX795F512LT-80I/TL 最大额定值与电气特性
| Core Processor | MIPS32 M4K 32-bit RISC |
| Maximum CPU Speed | 80 MHz |
| Performance | 1.56 DMIPS/MHz |
| Program Memory (Flash) | 512 KB (512K x 8) |
| SRAM | 128 KB |
| Boot Flash | 12 KB |
| Operating Voltage | 2.3 V to 3.6 V |
| 工作温度 | -40C to +85C (industrial) |
| 封装 | 124-pin VTLA (TL) 9x9 mm |
| Ethernet | 10/100 Mbit MAC with DMA |
| USB | USB 2.0 Full-Speed OTG with on-chip transceiver |
| CAN | 2x CAN 2.0B controllers |
| ADC | 16-channel 10-bit, 1 Msps |
| Serial Interfaces | 6x UART, 4x SPI, 5x I2C |
| DMA Channels | 8 |
| Timers | 5x 16-bit, 2x 32-bit |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
PIC32MX795F512LT-80I/TL 引脚配置
| 引脚 1 | VDD — Power supply |
| 引脚 2 | VSS — Ground |
| 引脚 3 | RA0 — Port A bit 0 / analog input |
| 引脚 4 | RA1 — Port A bit 1 / analog input |
| 引脚 5 | RB0 — Port B bit 0 |
| 引脚 6 | RB1 — Port B bit 1 |
| 引脚 7 | RB2 — Port B bit 2 |
| 引脚 8 | RB3 — Port B bit 3 |
| 引脚 9 | RB4 — Port B bit 4 |
| 引脚 10 | RB5 — Port B bit 5 |
| 引脚 11 | RB6 — Port B bit 6 |
| 引脚 12 | RB7 — Port B bit 7 |
| 引脚 13 | RB8 — Port B bit 8 |
| 引脚 14 | RB9 — Port B bit 9 |
| 引脚 15 | RB10 — Port B bit 10 |
| 引脚 16 | RB11 — Port B bit 11 |
| 引脚 17 | RB12 — Port B bit 12 |
| 引脚 18 | RB13 — Port B bit 13 |
| 引脚 19 | RB14 — Port B bit 14 |
| 引脚 20 | RB15 — Port B bit 15 |
| 引脚 21 | RC1 — Port C bit 1 |
| 引脚 22 | RC2 — Port C bit 2 |
| 引脚 23 | RC3 — Port C bit 3 |
| 引脚 24 | RC4 — Port C bit 4 |
| 引脚 25 | RC5 — Port C bit 5 |
| 引脚 26 | RC6 — Port C bit 6 |
| 引脚 27 | RC7 — Port C bit 7 |
| 引脚 28 | RC8 — Port C bit 8 |
| 引脚 29 | RC9 — Port C bit 9 |
| 引脚 30 | VDD — Power supply |
| 引脚 31 | VSS — Ground |
| 引脚 32 | RD0 — Port D bit 0 |
| 引脚 33 | RD1 — Port D bit 1 |
| 引脚 34 | RD2 — Port D bit 2 |
| 引脚 35 | RD3 — Port D bit 3 |
| 引脚 36 | RD4 — Port D bit 4 |
| 引脚 37 | RD5 — Port D bit 5 |
| 引脚 38 | RD6 — Port D bit 6 |
| 引脚 39 | RD7 — Port D bit 7 |
| 引脚 40 | RD8 — Port D bit 8 |
| 引脚 41 | RD9 — Port D bit 9 |
| 引脚 42 | RD10 — Port D bit 10 |
| 引脚 43 | RD11 — Port D bit 11 |
| 引脚 44 | RD12 — Port D bit 12 |
| 引脚 45 | RD13 — Port D bit 13 |
| 引脚 46 | RD14 — Port D bit 14 |
| 引脚 47 | RD15 — Port D bit 15 |
| 引脚 48 | RE0 — Port E bit 0 |
| 引脚 49 | RE1 — Port E bit 1 |
| 引脚 50 | RE2 — Port E bit 2 |
| 引脚 51 | RE3 — Port E bit 3 |
| 引脚 52 | RE4 — Port E bit 4 |
| 引脚 53 | RE5 — Port E bit 5 |
| 引脚 54 | RE6 — Port E bit 6 |
| 引脚 55 | RE7 — Port E bit 7 |
| 引脚 56 | RF0 — Port F bit 0 |
| 引脚 57 | RF1 — Port F bit 1 |
| 引脚 58 | RF2 — Port F bit 2 |
| 引脚 59 | RF3 — Port F bit 3 |
| 引脚 60 | RF4 — Port F bit 4 |
| 引脚 61 | RF5 — Port F bit 5 |
| 引脚 62 | RF6 — Port F bit 6 |
| 引脚 63 | RF7 — Port F bit 7 |
| 引脚 64 | RF8 — Port F bit 8 |
| 引脚 65 | RF9 — Port F bit 9 |
| 引脚 66 | RF10 — Port F bit 10 |
| 引脚 67 | RF11 — Port F bit 11 |
| 引脚 68 | RF12 — Port F bit 12 |
| 引脚 69 | RF13 — Port F bit 13 |
| 引脚 70 | RF14 — Port F bit 14 |
| 引脚 71 | RF15 — Port F bit 15 |
| 引脚 72 | RG0 — Port G bit 0 |
| 引脚 73 | RG1 — Port G bit 1 |
| 引脚 74 | RG2 — Port G bit 2 |
| 引脚 75 | RG3 — Port G bit 3 |
| 引脚 76 | RG4 — Port G bit 4 |
| 引脚 77 | RG5 — Port G bit 5 |
| 引脚 78 | RG6 — Port G bit 6 |
| 引脚 79 | RG7 — Port G bit 7 |
| 引脚 80 | RG8 — Port G bit 8 |
| 引脚 81 | RG9 — Port G bit 9 |
| 引脚 82 | RG10 — Port G bit 10 |
| 引脚 83 | RG11 — Port G bit 11 |
| 引脚 84 | RG12 — Port G bit 12 |
| 引脚 85 | RG13 — Port G bit 13 |
| 引脚 86 | RG14 — Port G bit 14 |
| 引脚 87 | RG15 — Port G bit 15 |
| 引脚 88 | VDD — Power supply |
| 引脚 89 | VSS — Ground |
| 引脚 90 | AVDD — Analog power supply |
| 引脚 91 | AVSS — Analog ground |
| 引脚 92 | VREF+ — ADC positive reference |
| 引脚 93 | VREF- — ADC negative reference |
| 引脚 94 | MCLR — Master clear reset (active low) |
| 引脚 95 | OSC1 — Primary oscillator input |
| 引脚 96 | OSC2 — Primary oscillator output |
| 引脚 97 | SOSCI — Secondary oscillator input |
| 引脚 98 | SOSCO — Secondary oscillator output |
| 引脚 99 | PGEC1 — Programming clock / debug |
| 引脚 100 | PGED1 — Programming data / debug |
| 引脚 101 | USBDP — USB D+ signal |
| 引脚 102 | USBDM — USB D- signal |
| 引脚 103 | ETXEN — Ethernet transmit enable |
| 引脚 104 | ETXD0 — Ethernet transmit data 0 |
| 引脚 105 | ETXD1 — Ethernet transmit data 1 |
| 引脚 106 | ERXD0 — Ethernet receive data 0 |
| 引脚 107 | ERXD1 — Ethernet receive data 1 |
| 引脚 108 | ECRSDV — Ethernet carrier sense / receive data valid |
| 引脚 109 | ERXERR — Ethernet receive error |
| 引脚 110 | EREFCLK — Ethernet reference clock |
| 引脚 111 | EMDC — Ethernet management data clock |
| 引脚 112 | EMDIO — Ethernet management data I/O |
| 引脚 113 | C1TX — CAN1 transmit |
| 引脚 114 | C1RX — CAN1 receive |
| 引脚 115 | C2TX — CAN2 transmit |
| 引脚 116 | C2RX — CAN2 receive |
| 引脚 117 | U1TX — UART1 transmit |
| 引脚 118 | U1RX — UART1 receive |
| 引脚 119 | U2TX — UART2 transmit |
| 引脚 120 | U2RX — UART2 receive |
| 引脚 121 | SCL1 — I2C1 clock |
| 引脚 122 | SDA1 — I2C1 data |
| 引脚 123 | SCK1 — SPI1 clock |
| 引脚 124 | SDI1 — SPI1 data input |
典型应用
PIC32MX795F512LT-80I/TL 适用于 6 应用s: Industrial Ethernet Gateway, CAN-to-Ethernet Protocol Bridge, Motor Control with Field-Oriented Control, USB Device and Host Instrumentation, Building Automation Controller, Data Acquisition and Signal Processing.
Industrial Ethernet Gateway
The PIC32MX795F512LT-80I/TL fits industrial Ethernet gateways because its integrated 10/100 Mbit MAC with dedicated DMA handles packet traffic without CPU intervention, while 512 KB Flash and 128 KB SRAM accommodate a full TCP/IP stack and Modbus TCP server. The 80 MHz M4K core at 1.56 DMIPS/MHz processes protocol translation between Ethernet and serial fieldbus links. In a typical design, the MAC connects to an external PHY through the RMII interface, and the dual CAN controllers bridge to CANopen devices. The trade-off versus a Cortex-M7 gateway is lower raw throughput, but the on-chip Ethernet MAC eliminates an external controller and reduces BOM cost.
推荐
CAN-to-Ethernet Protocol Bridge
The PIC32MX795F512LT-80I/TL is ideal for CAN-to-Ethernet bridges because it integrates two CAN 2.0B controllers alongside the 10/100 Ethernet MAC, allowing simultaneous dual-bus CAN traffic and Ethernet uplink on one chip. The 8-channel DMA moves CAN and Ethernet frames without CPU load, and 128 KB SRAM buffers burst traffic during protocol conversion. In a bridge design, one CAN module connects to a vehicle bus and the other to a machine bus, while the Ethernet MAC forwards aggregated data to a supervisory system. The 2.3 V to 3.6 V supply and -40C to +85C rating suit factory-floor and automotive-adjacent environments.
推荐
Motor Control with Field-Oriented Control
The PIC32MX795F512LT-80I/TL supports motor control applications through its 16-channel 10-bit ADC sampling at 1 Msps, which captures three-phase current feedback for field-oriented control loops. The 80 MHz M4K core with single-cycle 32x16 MAC executes Park and Clarke transforms in real time, while the five 16-bit timers generate complementary PWM with dead-time insertion. In a typical servo drive, the ADC samples shunt currents synchronized to PWM, and the DMA transfers results to RAM without CPU overhead. The trade-off versus a dedicated motor-control MCU is the absence of on-chip op-amps, but the integrated Ethernet enables remote drive monitoring.
推荐
USB Device and Host Instrumentation
The PIC32MX795F512LT-80I/TL suits USB instrumentation because it integrates a USB 2.0 full-speed OTG controller with an on-chip transceiver, eliminating an external USB PHY. The 512 KB Flash stores firmware and data-logging buffers, while 128 KB SRAM supports USB endpoints and a command parser. In a data-acquisition instrument, the device enumerates as a CDC or HID device and streams ADC samples to a host PC. The 16-channel 10-bit ADC and 8-channel DMA allow continuous sampling without CPU intervention. The trade-off versus a dedicated USB MCU is higher power, but the integrated Ethernet and CAN add connectivity options.
推荐
Building Automation Controller
The PIC32MX795F512LT-80I/TL fits building automation controllers because it combines Ethernet, dual CAN, and six UART channels for BACnet/IP, CANopen, and Modbus RTU connectivity on a single chip. The 512 KB Flash holds a building management stack, and 128 KB SRAM buffers sensor and actuator data across multiple buses. In a typical HVAC controller, the Ethernet MAC connects to the building backbone while UARTs interface to zone sensors and CAN links to VAV boxes. The -40C to +85C industrial temperature range and 2.3 V to 3.6 V supply support reliable operation in mechanical rooms. The trade-off is higher cost than an 8-bit controller, justified by integrated networking.
推荐
Data Acquisition and Signal Processing
The PIC32MX795F512LT-80I/TL supports data acquisition because its 16-channel 10-bit ADC samples at 1 Msps and the 8-channel DMA streams results to SRAM without CPU intervention, enabling continuous multi-channel logging. The 80 MHz M4K core with single-cycle MAC executes FIR and IIR filters in real time, and 512 KB Flash stores calibration tables and firmware. In a typical DAQ node, the ADC digitizes sensor signals, DMA transfers blocks to RAM, and the core applies filtering before transmitting over Ethernet or USB. The trade-off versus a dedicated DSP is lower MIPS, but the integrated connectivity and memory reduce system cost.
推荐
推荐产品汇总
工程参考数据： PIC32MX795F512LT-80I/TL ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC32MX795F512L-80I/TL | PIC32MX795F512L-80V/PF | PIC32MX695F512LT-80I/TL | PIC32MX775F512LT-80I/PT | PIC32MX795F512LT-80I/BG |
|---|---|---|---|---|---|---|
| Package | 124-pin VTLA (TL) | 124-pin VTLA (TL) - same | 100-pin TQFP (PF) | 124-pin VTLA (TL) - same | 100-pin TQFP (PT) | 124-pin XBGA (BG) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| Ethernet MAC | 10/100 Mbit with DMA | 10/100 Mbit with DMA | 10/100 Mbit with DMA | None | 10/100 Mbit with DMA | 10/100 Mbit with DMA |
| CAN Controllers | 2x CAN 2.0B | 2x CAN 2.0B | 2x CAN 2.0B | 2x CAN 2.0B | 2x CAN 2.0B | 2x CAN 2.0B |
| USB | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +105C | -40C to +85C | -40C to +85C | -40C to +85C |
| Packaging | Tape & Reel | Tray | Tray | Tape & Reel | Tray | Tape & Reel |
关键差异点
- Integrated 10/100 Ethernet MAC with DMA （对比 PIC32MX695F512LT-80I/TL)
- Tape-and-reel packaging for automated assembly （对比 PIC32MX795F512L-80I/TL)
- Dual CAN 2.0B plus Ethernet on one die （对比 PIC32MX775F512LT-80I/PT)
设计说明
Decouple every VDD pin with a 0.1 uF ceramic capacitor placed within 5 mm of the pin, plus a 10 uF bulk capacitor near the package. The PIC32MX795F512LT-80I/TL draws transient current during 80 MHz operation; inadequate decoupling causes clock jitter and Ethernet packet errors. Use a solid ground plane under the device and connect the exposed pad to ground with multiple vias.
Route the Ethernet RMII signals (ETXD0/1, ERXD0/1, EREFCLK) as 50 ohm controlled-impedance traces and keep them matched in length within 5 mm. Place the external PHY within 25 mm of the MCU to minimize skew. Keep the USB D+/D- pair at 90 ohm differential impedance and avoid stubs. The 124-pin VTLA exposed pad must be soldered with adequate via stitching for thermal relief.
Do not exceed the 3.6 V maximum supply voltage; the PIC32MX795F512LT-80I/TL is not 5 V tolerant on all pins. Verify the VREF+ and VREF- connections for the ADC, as floating references cause inaccurate conversions. Ensure the MCLR pin has a 10 kohm pull-up and 0.1 uF capacitor to prevent spurious resets. Confirm the oscillator circuit matches the datasheet's recommended load capacitors for the selected crystal.
合规信息
RoHS compliant per Microchip product page. Not AEC-Q100 qualified; industrial temperature grade only.
