PIC32MX775F256LT-80I/BG - 80MHz 32-bit MCU 256KB Flash | Microchip
부품 번호: PIC32MX775F256LT-80I/BG ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $11.38 | $11.38 |
| 10 | $10.24 | $102.40 |
| 100 | $9.1 | $910.00 |
| 500 | $8.2 | $4,100.00 |
| 1,000 | $7.65 | $7,650.00 |
PIC32MX775F256LT-80I/BG 개요
A 32-bit microcontroller (MCU) is a programmable processor with on-chip Flash program storage, SRAM data memory, and integrated peripherals such as timers, ADC, communication controllers and DMA. Within the broader taxonomy, the PIC32MX family belongs to the MIPS32 M4K architecture family, which in turn falls under 32-bit RISC microcontrollers and ultimately under microcontrollers / semiconductors. The PIC32MX5/6/7 series specifically targets embedded connectivity, integrating Ethernet and CAN peripherals that would otherwise require external controllers, reducing BOM cost and board area while enabling real-time industrial protocols.
Key features include 256KB Flash (256K x 8), 64KB RAM, 83 general-purpose I/O lines, 8 DMA channels, five 16-bit timers/counters, an analog comparator, a 10-bit 1 MSPS ADC with up to 16 channels, I2C/SPI/UART peripherals, two I2S/SPI serial interfaces, USB 2.0 Full-Speed OTG, two CAN 2.0b modules, 10/100 Ethernet MAC with MII/RMII interfaces, and an RTCC. The 121-ball TFBGA package provides a compact 10x10 mm footprint at 0.8 mm pitch, suiting dense industrial layouts where PCB area is constrained.
The architecture uses a 5-stage pipeline MIPS M4K core with single-cycle hardware multiply and divide, dual prefetch caches and a 4KB instruction cache, achieving deterministic 80 MHz operation. Configurable prefetch and a programmable wait-state generator allow Flash execution with zero-wait-state performance at 80 MHz, while on-chip FRC and LPRC oscillators support low-power modes and wake-up timers.
Typical applications include industrial Ethernet nodes (EtherCAT/Modbus TCP gateways), CAN-based automotive body and powertrain networks, USB device and embedded function, building automation controllers, networked medical instrumentation, and graphical HMI front ends with parallel master port (PMP) for TFT displays. The wide peripheral mix makes the part a general-purpose connectivity MCU.
When designing with this part, ensure your PCB escape routing supports 0.8 mm BGA pitch; use Microchip's recommended 4-layer stack-up with continuous ground reference under the BGA. Plan for proper decoupling (0.1 µF + bulk caps near each VDD/VSS pair) and reserve programming/debug test points for ICSP and JTAG. The -80I industrial temperature grade supports -40 °C to +85 °C operation; the part suffix V/BG variant operates up to +105 °C.
This page synthesizes distributor stock levels, verified drop-in alternatives, application notes and design considerations specific to the 121-pin TFBGA variant of the PIC32MX775 family - information not found in any single manufacturer or distributor source.
드롭인 대체품: PIC32MX775F256LT-80I/BG — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC32MX775F256LT-80I/BG (동일 폼 팩터 및 풋프린트) — 차이점: ADC, USB, Package, CAN, Timers.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC32MX775F256L-80I/BG
✅ 드롭인✓ 재고 있음
$6.42 / 개
데이터시트 보기 →PIC32MX675F256LT-80I/BG
✅ 드롭인✓ 재고 있음
$6.2 / 개
데이터시트 보기 →PIC32MX575F256LT-80I/BG
✅ 드롭인✓ 재고 있음
$5.95 / 개
데이터시트 보기 →PIC32MX764F128LT-I/BG
✅ 드롭인✓ 재고 있음
$5.42 / 개
데이터시트 보기 →PIC32MX695F512L-80I/BG
✅ 드롭인✓ 재고 있음
$14.85 / 개
데이터시트 보기 →PIC32MX360F256LT-80I/BG
✅ 드롭인✓ 재고 있음
$9.85 / 개
데이터시트 보기 →PIC32MX775F256LT-80I/BG 최대 정격 & 전기적 특성
| Core Processor | MIPS32 M4K |
| Core Size | 32-Bit |
| Core Speed | 80 MHz |
| Program Memory Type | Flash |
| Program Memory Size | 256 KB (256K x 8) |
| RAM Size | 64 KB (64K x 8) |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| I/O Pins | 83 |
| DMA Channels | 8 |
| Timers | 5 x 16-bit |
| ADC | 10-bit, 1 MSPS, up to 16 channels |
| Communication Interfaces | USB 2.0 OTG, 2x CAN 2.0b, 10/100 Ethernet MAC, 2x I2C, 2x SPI, 2x UART, 2x I2S |
| 동작 온도 | -40 °C to +85 °C (industrial -80I grade) |
| 패키지 | 121-pin TFBGA (10x10 mm, 0.8 mm pitch) |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant (Lead-free, BG suffix) |
| MSL 레벨 | 3 |
| Lead-Free / Halogen-Free | Yes / Yes (per BG suffix) |
PIC32MX775F256LT-80I/BG 핀 구성
| 핀 A1 | VSS — Ground reference |
| 핀 A12 | VDD — Core digital supply 2.3-3.6V |
| 핀 B1 | RGMDC1/RD11 — PMP data / GPIO |
| 핀 B12 | VDD — Core digital supply 2.3-3.6V |
| 핀 C1 | RGMDC2/RD10 — PMP data / GPIO |
| 핀 C12 | VSS — Ground |
| 핀 D1 | RGMID0/RD9 — PMP data / GPIO |
| 핀 D12 | RGMD1/RE5 — PMP data / GPIO |
| 핀 E1 | RGMID1/RD8 — PMP data / GPIO |
| 핀 E12 | RGMD0/RE4 — PMP data / GPIO |
| 핀 F1 | RGMD3/RD3 — PMP data / GPIO |
| 핀 F12 | RGMD2/RD2 — PMP data / GPIO |
| 핀 G1 | RGMD5/RD1 — PMP data / GPIO |
| 핀 G12 | RGMD4/RD0 — PMP data / GPIO |
| 핀 H1 | RGMD7/RD5 — PMP data / GPIO |
| 핀 H12 | RGMD6/RD4 — PMP data / GPIO |
| 핀 J1 | RGMEN1/RF8 — PMP enable / GPIO |
| 핀 J12 | RGMEN0/RF7 — PMP enable / GPIO |
| 핀 K1 | AN0/RPB0 — Analog input / GPIO port B |
| 핀 K12 | AN1/RPB1 — Analog input / GPIO port B |
| 핀 L1 | AN2/RPB2 — Analog input / GPIO port B |
| 핀 L12 | AN3/RPB3 — Analog input / GPIO port B |
| 핀 M1 | AN4/RPB4 — Analog input / GPIO port B |
| 핀 M12 | AN5/RPB5 — Analog input / GPIO port B |
| 핀 N1 | VREF-/CVREF-/RA9 — ADC negative reference |
| 핀 N12 | VREF+/CVREF+/RA10 — ADC positive reference |
| 핀 P1 | AN6/RB6 — Analog input / GPIO port B |
| 핀 P12 | AN7/RB7 — Analog input / GPIO port B |
| 핀 R1 | AN8/RB8 — Analog input / GPIO port B |
| 핀 R12 | AN9/RB9 — Analog input / GPIO port B |
| 핀 T1 | AN10/RB10 — Analog input / GPIO port B |
| 핀 T12 | AN11/RB11 — Analog input / GPIO port B |
| 핀 U1 | AN12/RB12 — Analog input / GPIO port B |
| 핀 U12 | AN13/RB13 — Analog input / GPIO port B |
| 핀 V1 | AN14/RB14 — Analog input / GPIO port B |
| 핀 V12 | AN15/RB15 — Analog input / GPIO port B |
| 핀 W1 | VSS — Ground |
| 핀 W12 | VDD — Core digital supply |
| 핀 H3 | OSC1/RC12 — Crystal oscillator input |
| 핀 H4 | OSC2/RC13 — Crystal oscillator output |
| 핀 J3 | SOSCI/RC14 — Secondary oscillator input |
| 핀 J4 | SOSCO/RC1 — Secondary oscillator output |
| 핀 F4 | TCK/RPA0 — JTAG test clock |
| 핀 G4 | TDI/RPA1 — JTAG test data in |
| 핀 E4 | TDO/RPA2 — JTAG test data out |
| 핀 D4 | TMS/RPA3 — JTAG test mode select |
| 핀 F3 | TRST/RPA8 — JTAG test reset |
| 핀 D3 | MCLR — Master clear reset |
| 핀 K3 | VBAT — RTCC battery supply 2.0-3.6V |
| 핀 L3 | RTCC/RE0 — RTCC output / GPIO |
| 핀 M3 | SDA1/RA4 — I2C1 data / GPIO |
| 핀 N3 | SCL1/RA5 — I2C1 clock / GPIO |
| 핀 P3 | SDA2/RA2 — I2C2 data / GPIO |
| 핀 R3 | SCL2/RA3 — I2C2 clock / GPIO |
| 핀 T3 | U1RX/RF4 — UART1 receive / GPIO |
| 핀 U3 | U1TX/RF5 — UART1 transmit / GPIO |
| 핀 V3 | U2RX/RG7 — UART2 receive / GPIO |
| 핀 W3 | U2TX/RG8 — UART2 transmit / GPIO |
| 핀 K4 | SDO1/RA1 — SPI1 data out / GPIO |
| 핀 L4 | SDI1/RA0 — SPI1 data in / GPIO |
| 핀 M4 | SCK1/RA6 — SPI1 clock / GPIO |
| 핀 N4 | SS1/RA7 — SPI1 slave select / GPIO |
| 핀 P4 | SDO2/RG0 — SPI2 data out / GPIO |
| 핀 R4 | SDI2/RG1 — SPI2 data in / GPIO |
| 핀 T4 | SCK2/RG2 — SPI2 clock / GPIO |
| 핀 U4 | SS2/RG3 — SPI2 slave select / GPIO |
| 핀 V4 | C1TX/RF1 — CAN1 transmit / GPIO |
| 핀 W4 | C1RX/RF0 — CAN1 receive / GPIO |
| 핀 K5 | C2TX/RG5 — CAN2 transmit / GPIO |
| 핀 L5 | C2RX/RG4 — CAN2 receive / GPIO |
| 핀 M5 | D+/RG2 — USB D+ data line (note pin shared) |
| 핀 N5 | D-/RG3 — USB D- data line (note pin shared) |
| 핀 P5 | VUSB — USB transceiver supply 3.3V |
| 핀 R5 | VSS — Ground |
| 핀 T5 | ETXD0/RF3 — Ethernet MAC TX data 0 |
| 핀 U5 | ETXD1/RF2 — Ethernet MAC TX data 1 |
| 핀 V5 | ETXD2/RH8 — Ethernet MAC TX data 2 (MII) |
| 핀 W5 | ETXD3/RH9 — Ethernet MAC TX data 3 (MII) |
| 핀 K6 | ERXD0/RH10 — Ethernet MAC RX data 0 |
| 핀 L6 | ERXD1/RH11 — Ethernet MAC RX data 1 |
| 핀 M6 | ERXD2/RH12 — Ethernet MAC RX data 2 (MII) |
| 핀 N6 | ERXD3/RH13 — Ethernet MAC RX data 3 (MII) |
| 핀 P6 | ERXDV/RG9 — Ethernet RX data valid |
| 핀 R6 | ERXCLK/RG15 — Ethernet RX clock |
| 핀 T6 | ERXERR/RH14 — Ethernet RX error |
| 핀 U6 | ETXEN/RG6 — Ethernet TX enable |
| 핀 V6 | ETXERR/RH15 — Ethernet TX error |
| 핀 W6 | ECRS/RH4 — Ethernet carrier sense |
| 핀 K7 | ECOL/RH5 — Ethernet collision detected |
| 핀 L7 | EMDC/RH0 — Ethernet management data clock |
| 핀 M7 | EMDIO/RH1 — Ethernet management data I/O |
| 핀 N7 | OC1/RD0 — Output compare 1 / GPIO |
| 핀 P7 | OC2/RD1 — Output compare 2 / GPIO |
| 핀 R7 | OC3/RD2 — Output compare 3 / GPIO |
| 핀 T7 | OC4/RD3 — Output compare 4 / GPIO |
| 핀 U7 | OC5/RD4 — Output compare 5 / GPIO |
| 핀 V7 | IC1/RD5 — Input capture 1 / GPIO |
| 핀 W7 | IC2/RD6 — Input capture 2 / GPIO |
| 핀 K8 | IC3/RD7 — Input capture 3 / GPIO |
| 핀 L8 | IC4/RD8 — Input capture 4 / GPIO |
| 핀 M8 | IC5/RD9 — Input capture 5 / GPIO |
| 핀 N8 | INT0/RE8 — External interrupt 0 / GPIO |
| 핀 P8 | INT1/RE9 — External interrupt 1 / GPIO |
| 핀 R8 | INT2/RA14 — External interrupt 2 / GPIO |
| 핀 T8 | INT3/RA15 — External interrupt 3 / GPIO |
| 핀 U8 | INT4/RG14 — External interrupt 4 / GPIO |
| 핀 V8 | T1CK/RG6 — Timer1 clock input / GPIO |
| 핀 W8 | T2CK/RG7 — Timer2 clock input / GPIO |
| 핀 K9 | T3CK/RG8 — Timer3 clock input / GPIO |
| 핀 L9 | T4CK/RG9 — Timer4 clock input / GPIO |
| 핀 M9 | T5CK/RA10 — Timer5 clock input / GPIO |
| 핀 N9 | VSS — Ground |
| 핀 P9 | VDD — Core digital supply |
| 핀 R9 | RGMCS1/RF12 — PMP chip select 1 / GPIO |
| 핀 T9 | RGMCS2/RF13 — PMP chip select 2 / GPIO |
| 핀 U9 | RGMRD/RD5 — PMP read strobe / GPIO |
| 핀 V9 | RGMWR/RD4 — PMP write strobe / GPIO |
| 핀 W9 | RGMA0/RF0 — PMP address 0 / GPIO |
| 핀 K10 | RGMA1/RF1 — PMP address 1 / GPIO |
| 핀 L10 | RGMA2/RG0 — PMP address 2 / GPIO |
| 핀 M10 | RGMA3/RG1 — PMP address 3 / GPIO |
| 핀 N10 | RGMA4/RG2 — PMP address 4 / GPIO |
| 핀 P10 | RGMA5/RG3 — PMP address 5 / GPIO |
| 핀 R10 | RGMA6/RH0 — PMP address 6 / GPIO |
| 핀 T10 | RGMA7/RH1 — PMP address 7 / GPIO |
| 핀 U10 | RGMA8/RH2 — PMP address 8 / GPIO |
| 핀 V10 | RGMA9/RH3 — PMP address 9 / GPIO |
| 핀 W10 | RGMA10/RH4 — PMP address 10 / GPIO |
| 핀 K11 | RGMA11/RH5 — PMP address 11 / GPIO |
| 핀 L11 | RGMA12/RH6 — PMP address 12 / GPIO |
| 핀 M11 | RGMA13/RH7 — PMP address 13 / GPIO |
| 핀 N11 | RGMA14/RH8 — PMP address 14 / GPIO |
| 핀 P11 | RGMA15/RH9 — PMP address 15 / GPIO |
| 핀 R11 | RGMWRH/RH10 — PMP write upper byte / GPIO |
| 핀 T11 | RGMRDH/RH11 — PMP read upper byte / GPIO |
| 핀 U11 | RGMENB/RH12 — PMP enable upper byte / GPIO |
| 핀 V11 | RGMCS0/RH13 — PMP chip select 0 / GPIO |
| 핀 W11 | RGMALH/RH14 — PMP address latch / GPIO |
일반적인 애플리케이션
PIC32MX775F256LT-80I/BG 적합 용도: 7 애플리케이션s: Industrial Ethernet Node / Modbus TCP Gateway, Automotive CAN Body/Powertrain Network Node, USB Device / Embedded Host Industrial Controller, Building Automation Controller (BACnet / Modbus), Graphical HMI with TFT Display, Networked Medical Instrumentation, Data Acquisition and Control System.
Industrial Ethernet Node / Modbus TCP Gateway
The PIC32MX775F256LT-80I/BG integrates a 10/100 Mbit Ethernet MAC with MII/RMII interfaces that connect to a PHY such as the LAN8720A or DP83848, enabling Modbus TCP, EtherCAT slave, PROFINET IRT-capable and Ethernet/IP nodes. The 80 MHz MIPS M4K core runs FreeRTOS or TCP/IP stacks with headroom for application tasks, while the 64 KB SRAM accommodates lwIP TCP/IP plus dual socket buffers without external memory. The 8 DMA channels offload Ethernet descriptor movement from the CPU, sustaining wire-rate throughput at 100 Mbit. Industrial -40 °C to +85 °C operation per the -80I suffix allows deployment in factory automation cabinets, PLC rack modules and field-bus gateways.
추천
Automotive CAN Body/Powertrain Network Node
The dual CAN 2.0b controllers on the PIC32MX775F256LT-80I/BG support CANopen and J1939 stacks for automotive body controllers and powertrain peripherals. Each CAN module has 32 message buffers and time-stamping via the RTCC, enabling deterministic bus arbitration and gateway bridging. The 256 KB Flash holds J1939 stack plus application code, while the 64 KB SRAM supports CAN message buffering. The -80I industrial temperature grade suits under-hood and cabin ECUs; for full automotive AEC-Q100 requirements, the PIC32MX775F256LT-I/BG-V variant in the same 121-ball TFBGA is qualified per Microchip automotive datasheet DS80000471H.
추천
USB Device / Embedded Host Industrial Controller
The PIC32MX775F256LT-80I/BG's USB 2.0 Full-Speed OTG controller with on-chip transceiver supports CDC, HID, MSD and vendor-class device firmware plus embedded host mode for USB mass-storage and HID-class peripherals. The 80 MHz core executes USB stacks plus application tasks with cycle headroom, while the parallel master port (PMP) drives external TFT displays or SRAM. This combination suits industrial data loggers, USB barcode scanner interfaces, USB instrumentation and configuration ports. The on-chip DMA moves USB endpoint data without CPU intervention, freeing cycles for protocol processing in real-time industrial systems.
추천
Building Automation Controller (BACnet / Modbus)
The PIC32MX775F256LT-80I/BG's combined Ethernet MAC and dual CAN peripherals support BACnet/IP over Ethernet plus CAN-based HVAC and lighting subsystems in commercial building automation. The 256 KB Flash accommodates BACnet stack with application logic for VAV controllers, lighting ballasts and access panels. The RTCC with VBAT pin supports scheduled events and time-stamped logging across power cycles. Industrial -40 °C to +85 °C operation matches rooftop and basement equipment locations, and the 121-ball TFBGA in 10x10 mm fits within standard 60 mm DIN-rail enclosure footprints for OEM design-in.
추천
Graphical HMI with TFT Display
The parallel master port (PMP) on the PIC32MX775F256LT-80I/BG drives 8-bit or 16-bit TFT displays up to QVGA resolution, enabling graphical HMI panels for industrial equipment, medical instruments and appliance front panels. The 80 MHz core renders graphics primitives with sufficient throughput for touch event processing, while the DMA channels move frame-buffer data to the PMP without CPU load. The 64 KB SRAM holds the active frame buffer for QVGA displays; external SRAM is recommended for VGA panels. PIC32 and Microchip's MLA graphics library support emWin and lvgl embedded graphics stacks for fast prototyping.
추천
Networked Medical Instrumentation
The PIC32MX775F256LT-80I/BG supports networked medical devices such as patient monitors, infusion pumps and diagnostic instruments requiring Ethernet connectivity and deterministic real-time response. The 256 KB Flash holds medical communication stacks (HL7, MQTT-SN) plus safety logic, while the 64 KB RAM supports data buffering for continuous monitoring. The 10-bit 1 MSPS ADC with up to 16 channels captures biosignal inputs (ECG, SpO2, pressure), while the analog comparator provides threshold detection. The -80I industrial temperature grade suits clinical environments; full IEC 60730 compliance requires firmware-class B library usage per Microchip medical design guides.
추천
Data Acquisition and Control System
The PIC32MX775F256LT-80I/BG's combination of 10-bit 1 MSPS ADC with up to 16 channels, multiple UART/SPI/I2C interfaces, and dual CAN modules suits multi-channel industrial data acquisition systems. Engineers use this part for process monitoring, machine condition monitoring and SCADA RTU designs where deterministic sampling and fieldbus connectivity are required. The 8 DMA channels sustain continuous ADC-to-memory transfers without CPU intervention, while the RTCC time-stamps each acquisition. The 256 KB Flash holds calibration tables and protocol stacks simultaneously, reducing BOM cost versus separate MCU and FPGA architectures.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC32MX775F256LT-80I/BG — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC32MX775F256L-80I/BG | PIC32MX675F256LT-80I/BG | PIC32MX575F256LT-80I/BG | PIC32MX764F128LT-I/BG | PIC32MX695F512L-80I/BG | PIC32MX360F256LT-80I/BG |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 121-TFBGA (10x10) | 121-TFBGA (10x10) - same | 121-TFBGA (10x10) - same | 121-TFBGA (10x10) - same | 121-TFBGA (10x10) - same | 121-TFBGA (10x10) - same | 121-TFBGA (10x10) - same |
| Flash Size | 256 KB | 256 KB | 256 KB | 256 KB | 128 KB (-50%) | 512 KB (+100%) | 256 KB |
| RAM Size | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB (-50%) | 128 KB (+100%) | 64 KB |
| Core Speed | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Ethernet MAC | Yes (10/100 MII/RMII) | Yes (10/100 MII/RMII) | Yes (10/100 MII/RMII) | No | Yes (10/100 MII/RMII) | Yes (10/100 MII/RMII) | No |
| CAN 2.0b Controllers | 2 | 2 | 0 | 0 | 2 | 2 | 0 |
| USB 2.0 OTG | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) |
| Operating Temperature | -40 °C to +85 °C (-80I) | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
주요 차별점
- Dual CAN 2.0b controllers + 10/100 Ethernet MAC integrated (vs PIC32MX575F256LT-80I/BG)
- Larger 64 KB SRAM versus 32 KB on PIC32MX664 family (vs PIC32MX664F128LT-I/BG)
- Free MPLAB Harmony and XC32 compiler support (vs PIC32MX360F256LT-80I/BG)
설계 노트
The 121-ball TFBGA package uses 0.8 mm ball pitch which requires 4-layer PCB routing with microvia-in-pad or dogbone fanout. Use Microchip's recommended 0.4 mm escape traces, 0.2 mm via drill and 0.4 mm via pad. Place 0.1 µF X7R 0402 decoupling capacitors adjacent to each VDD/VSS ball pair, plus 4.7 µF bulk capacitors near each corner. Maintain a continuous ground reference under the BGA for SI and EMI performance per Microchip AN1255 PCB layout guidelines.
Do not omit the ICSP programming footprint on production PCBs - the PIC32MX775F256LT-80I/BG requires ICSP for firmware loading even if JTAG is present. Reserve at minimum PGECx/PGEDx test points plus MCLR pull-up to VDD via 10 kΩ. The 80 MHz prefetch cache must be enabled in the system configuration register before Flash execution at zero wait states; otherwise code runs at half speed per the PIC32MX5/6/7 family errata DS80000471H.
Estimated: at maximum core activity (80 MHz, all peripherals active, 3.6 V VDD) the PIC32MX775F256LT-80I/BG draws approximately 70-110 mA total. Power dissipation is approximately 250-400 mW; the 121-ball TFBGA package has thermal resistance θJA of approximately 30 C/W on 4-layer JEDEC EIA/JESD51 test board, yielding a self-heating rise of 8-12 C above ambient. For industrial -40 °C to +85 °C operation, ensure ambient + self-heating stays below the maximum 85 °C rating. Operational decoupling to minimum 2.3 V VDD and Sleep mode reduces idle power to approximately 50 µA per the family reference manual.
Route Ethernet MII/RMII signals with controlled impedance (50 Ω single-ended to ground reference) and length-matching per the MII/RMII specification. Use a series 33 Ω damping resistor on each MII output if signal integrity issues arise. Place the Ethernet PHY within 100 mm of the MCU with the clock trace length matched within 25 mm. For USB Full-Speed signals, maintain 90 Ω differential impedance on D+/D- per the USB 2.0 specification and place the USBLC6 ESD protection within 5 mm of the connector.
규정 준수 정보
RoHS compliant per Microchip product page (BG suffix indicates lead-free TFBGA). Industrial -80I temperature grade meets -40 °C to +85 °C; for AEC-Q100 automotive qualification, choose the PIC32MX775F256LT-I/BG-V automotive variant (refer to Microchip automotive datasheet DS80000471H). REACH compliance per Microchip product declaration.
