PIC32MX675F256LT-80I/PF - 80MHz 32-bit MCU 256KB Flash USB ENET | Microchip
N.º de pieza: PIC32MX675F256LT-80I/PF ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $9.85 | $9,85 |
| 10 | $9.12 | $91,20 |
| 100 | $8.04 | $804,00 |
| 500 | $7.21 | $3.605,00 |
| 1.000 | $6.45 | $6.450,00 |
PIC32MX675F256LT-80I/PF Descripción general
A 32-bit microcontroller (MCU) is a microprocessor that integrates the CPU core, program and data memory, peripherals, and interrupt logic onto a single IC. PIC32MX devices belong to the higher-tier family of Microchip's MIPS-based 32-bit portfolio, positioned as: PIC32MX microcontroller -> 32-bit MCU -> embedded microprocessor -> semiconductor. The M4K core provides single-cycle multiplication and hardware multiply-accumulate support, enabling deterministic real-time control at low power consumption.
Key features include 80 MHz maximum core clock, 1.56 DMIPS/MHz performance, 256 KB self-programmable Flash with live update support, 64 KB SRAM, integrated 10/100 Ethernet MAC with MII/RMII interface, USB 2.0 full-speed OTG, two I2C, two UART, two SPI, 16-channel 10-bit ADC at 1 Msps, five 16-bit timers/counters, and 53 general-purpose I/O pins. The device operates from 2.3 V to 3.6 V across the industrial -40 C to +85 C range.
The PIC32MX architecture uses a 5-stage pipeline Harvard memory layout, providing deterministic interrupt response and zero-wait-state Flash execution at full 80 MHz. Peripherals are interconnected through a 32-bit bus matrix and an 8-channel DMA engine, allowing high-throughput data movement between Ethernet, USB, ADC, and SPI without CPU intervention. The CTMU (Charge Time Measurement Unit) supports capacitive touch sensing, while the PMP (Parallel Master Port) connects to external displays or memory-mapped peripherals.
Typical applications include industrial Ethernet gateways, USB device controllers, building automation nodes, point-of-sale terminals, medical monitoring devices, and embedded web servers. The integrated Ethernet MAC significantly reduces BOM cost versus external PHY-based designs, while the USB OTG controller enables both host and device roles in a single interface.
Design with care for high-speed signal integrity. Place a 0.1 uF decoupling capacitor adjacent to every VDD/VDDCORE pin pair, with a bulk 10 uF tantalum capacitor at the regulator output. Route the Ethernet MII/RMII traces as a 50 ohm controlled-impedance group, and place the 25 MHz crystal within 200 mils of the OSC1/OSC2 pins to minimize jitter.
This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC32MX family, and practical design notes not consolidated in the manufacturer datasheet.
Alternativas directas para PIC32MX675F256LT-80I/PF — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con PIC32MX675F256LT-80I/PF (mismo factor de forma y huella) — difiere en ADC, Package, Ethernet MAC, USB, Core Architecture.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
PIC32MX675F256L-80I/PF
✅ Sustitución directa✓ En stock
$6.55 / unidad
Ver hoja de datos →PIC32MX675F256LT-80I/BG
✅ Sustitución directa✓ En stock
$6.2 / unidad
Ver hoja de datos →PIC32MX675F256LT-80V/PF
✅ Sustitución directa✓ En stock
$6.65 / unidad
Ver hoja de datos →PIC32MX675F256L-80I/BG
✅ Sustitución directa✓ En stock
$6.2 / unidad
Ver hoja de datos →PIC32MX575F256LT-80I/PF
✅ Sustitución directa✓ En stock
$4.85 / unidad
Ver hoja de datos →PIC32MX575F512LT-80I/BG
✅ Sustitución directa✓ En stock
$6.25 / unidad
Ver hoja de datos →PIC32MX564F128LT-I/PF
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
PIC32MX675F256LT-80I/PF Valores máximos y características eléctricas
| Core Architecture | MIPS32 M4K |
| Core Clock (max) | 80 MHz |
| Performance | 1.56 DMIPS/MHz |
| Program Memory (Flash) | 256 KB |
| Data Memory (SRAM) | 64 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Temperatura de funcionamiento | -40 C to +85 C (Industrial) |
| Encapsulado | 100-pin TQFP (14x14 mm) |
| I/O Pins | 53 |
| Ethernet MAC | 10/100 Mbps (MII/RMII) |
| USB | USB 2.0 Full-Speed OTG |
| DMA Channels | 8 |
| ADC | 16-channel, 10-bit, 1 Msps |
| Timers | Five 16-bit |
| UART / SPI / I2C | 2 / 2 / 2 |
| Tipo de montaje | Surface Mount |
| Lead-Free / RoHS | Yes / Compliant |
Configuración de pines de PIC32MX675F256LT-80I/PF
| Pin 1 | RF5 — General-purpose I/O / SDA2 (I2C2 data) |
| Pin 2 | RF4 — General-purpose I/O / SCL2 (I2C2 clock) |
| Pin 3 | RF3 — General-purpose I/O / USBID |
| Pin 4 | RF2 — General-purpose I/O / SDA1 (I2C1 data) |
| Pin 5 | RF1 — General-purpose I/O / SCL1 (I2C1 clock) |
| Pin 6 | RF0 — General-purpose I/O |
| Pin 7 | VDD |
| Pin 8 | RG15 — General-purpose I/O |
| Pin 9 | RG14 — General-purpose I/O |
| Pin 10 | RG13 — General-purpose I/O |
| Pin 11 | RG12 — General-purpose I/O |
| Pin 12 | RG11 — General-purpose I/O |
| Pin 13 | VSS — Ground reference |
| Pin 14 | RG10 — General-purpose I/O |
| Pin 15 | RG9 — General-purpose I/O |
| Pin 16 | RG8 — General-purpose I/O |
| Pin 17 | RG7 — General-purpose I/O / CIC2 (secondary Ethernet clock) |
| Pin 18 | RG6 — General-purpose I/O |
| Pin 19 | RG5 — General-purpose I/O |
| Pin 20 | RG4 — General-purpose I/O |
| Pin 21 | RG3 — General-purpose I/O |
| Pin 22 | RG2 — General-purpose I/O |
| Pin 23 | VSS — Ground reference |
| Pin 24 | RG1 — General-purpose I/O / TRCLK (trace clock) |
| Pin 25 | RG0 — General-purpose I/O / TRD0 (trace data 0) |
| Pin 26 | RA15 — General-purpose I/O / AVDD-related |
| Pin 27 | RA14 — General-purpose I/O |
| Pin 28 | RA13 — General-purpose I/O |
| Pin 29 | RA12 — General-purpose I/O |
| Pin 30 | RA11 — General-purpose I/O / AVDD |
| Pin 31 | RA10 — General-purpose I/O / AVSS |
| Pin 32 | RA9 — General-purpose I/O |
| Pin 33 | VDD — 2.3-3.6 V core supply |
| Pin 34 | RA8 — General-purpose I/O |
| Pin 35 | RA7 — General-purpose I/O |
| Pin 36 | RA6 — General-purpose I/O |
| Pin 37 | RA5 — General-purpose I/O |
| Pin 38 | RA4 — General-purpose I/O |
| Pin 39 | RA3 — General-purpose I/O |
| Pin 40 | RA2 — General-purpose I/O |
| Pin 41 | RA1 — General-purpose I/O |
| Pin 42 | RA0 — General-purpose I/O |
| Pin 43 | VSS — Ground reference |
| Pin 44 | RB15 — General-purpose I/O / OC5 (PWM) |
| Pin 45 | RB14 — General-purpose I/O / CN14 |
| Pin 46 | RB13 — General-purpose I/O / CN13 |
| Pin 47 | RB12 — General-purpose I/O / CN12 |
| Pin 48 | RB11 — General-purpose I/O / CN11 |
| Pin 49 | RB10 — General-purpose I/O / CN10 |
| Pin 50 | RB9 — General-purpose I/O / CN9 |
| Pin 51 | RB8 — General-purpose I/O / CN8 |
| Pin 52 | RB7 — General-purpose I/O / CN7 |
| Pin 53 | RB6 — General-purpose I/O / CN6 |
| Pin 54 | RB5 — General-purpose I/O / CN5 |
| Pin 55 | RB4 — General-purpose I/O / CN4 |
| Pin 56 | RB3 — General-purpose I/O / CN3 / AN3 |
| Pin 57 | RB2 — General-purpose I/O / CN2 / AN2 |
| Pin 58 | RB1 — General-purpose I/O / CN1 / AN1 |
| Pin 59 | RB0 — General-purpose I/O / CN0 / AN0 |
| Pin 60 | VSS — Ground reference |
| Pin 61 | VDD — 2.3-3.6 V core supply |
| Pin 62 | RC15 — General-purpose I/O / OC4 (PWM) |
| Pin 63 | RC14 — General-purpose I/O / OC3 (PWM) |
| Pin 64 | RC13 — General-purpose I/O |
| Pin 65 | RC12 — General-purpose I/O |
| Pin 66 | RC11 — General-purpose I/O |
| Pin 67 | RC10 — General-purpose I/O |
| Pin 68 | RC9 — General-purpose I/O |
| Pin 69 | RC8 — General-purpose I/O |
| Pin 70 | RC7 — General-purpose I/O |
| Pin 71 | RC6 — General-purpose I/O |
| Pin 72 | VCAP — External capacitor for internal 1.8V regulator (10uF low-ESR ceramic) |
| Pin 73 | RC5 — General-purpose I/O |
| Pin 74 | RC4 — General-purpose I/O |
| Pin 75 | RC3 — General-purpose I/O |
| Pin 76 | RC2 — General-purpose I/O |
| Pin 77 | RC1 — General-purpose I/O |
| Pin 78 | RC0 — General-purpose I/O |
| Pin 79 | VSS — Ground reference |
| Pin 80 | RD15 — General-purpose I/O / ETXD2 (Ethernet) |
| Pin 81 | RD14 — General-purpose I/O / ETXD3 (Ethernet) |
| Pin 82 | RD13 — General-purpose I/O / ETXCLK (Ethernet) |
| Pin 83 | RD12 — General-purpose I/O / ETXERR (Ethernet) |
| Pin 84 | RD11 — General-purpose I/O / ECRS (Ethernet) |
| Pin 85 | RD10 — General-purpose I/O / ECOL (Ethernet) |
| Pin 86 | RD9 — General-purpose I/O / ERXCLK (Ethernet) |
| Pin 87 | RD8 — General-purpose I/O / ERXDV (Ethernet) |
| Pin 88 | RD7 — General-purpose I/O / ERXD1 (Ethernet) |
| Pin 89 | RD6 — General-purpose I/O / ERXD0 (Ethernet) |
| Pin 90 | RD5 — General-purpose I/O / ERXERR (Ethernet) |
| Pin 91 | RD4 — General-purpose I/O / ETXD1 (Ethernet) |
| Pin 92 | RD3 — General-purpose I/O / ETXD0 (Ethernet) |
| Pin 93 | RD2 — General-purpose I/O / EMDIO (Ethernet mgmt) |
| Pin 94 | RD1 — General-purpose I/O / EMDC (Ethernet mgmt clock) |
| Pin 95 | RD0 — General-purpose I/O |
| Pin 96 | OSC1 — Primary oscillator crystal input (8-25 MHz fundamental or ceramic resonator) |
| Pin 97 | OSC2 — Primary oscillator crystal output |
| Pin 98 | MCLR — Master clear reset input (active-low, drive low to reset) |
| Pin 99 | VSS — Ground reference |
| Pin 100 | RF6 — General-purpose I/O / U2RTS (UART2 ready-to-send) |
Aplicaciones típicas
PIC32MX675F256LT-80I/PF es adecuado para 7 aplicacións: Industrial Ethernet Gateway, USB Device/Host Controller, Building Automation Node, Medical Patient Monitoring, Embedded Web Server / IoT Node, Point-of-Sale (POS) Terminal, Capacitive Touch Control Panel.
Industrial Ethernet Gateway
The PIC32MX675F256LT-80I/PF is ideal for industrial Ethernet gateway designs requiring integrated MAC and proven TCP/IP stack support. Its integrated 10/100 Ethernet MAC with MII/RMII interface eliminates the need for an external controller, pairing with low-cost PHYs such as LAN8720 or DP83848 to form a complete two-port industrial node. The 80 MHz MIPS M4K core delivers sufficient headroom for Modbus TCP, EtherNet/IP, or PROFINET RT stacks, while the 256 KB Flash and 64 KB RAM host the full MLA TCP/IP or Harmony Net stack with room for application logic. The 8-channel DMA engine offloads packet copy operations between MAC descriptors and application buffers, freeing the CPU for protocol processing and reducing interrupt load.
Recomendado
USB Device/Host Controller
The integrated USB 2.0 full-speed OTG controller with on-chip PHY makes this MCU well suited for USB device, host, or dual-role applications such as data loggers, HID peripherals, or USB-to-UART bridges. The USB OTG hardware negotiates host and device roles automatically, with the 8-channel DMA engine sustaining 12 Mbps USB throughput while leaving CPU cycles for application processing. Microchip's USB stack (included in Harmony) provides CDC, HID, MSD, and vendor-class drivers with example projects, reducing development time for both HID game controllers and CDC virtual COM port designs. Pair with external ESD protection such as USBLC6-2SC6 on the D+/D- lines for industrial EMC compliance.
Recomendado
Building Automation Node
Building automation controllers benefit from the PIC32MX675's combination of Ethernet, USB, and multiple serial interfaces for sensor aggregation and BACnet/Modbus gateway functions. The two UARTs support RS-485 transceivers for industrial sensor busses, while the two I2C controllers connect to environmental sensors and EEPROM memory. The 16-channel 10-bit ADC at 1 Msps handles analog inputs from temperature, pressure, and humidity transducers. The CTMU peripheral enables capacitive touch keypads for room control panels without dedicated touch ICs. Industrial -40 C to +85 C operation ensures reliable deployment in unheated equipment closets and rooftop HVAC enclosures.
Recomendado
Medical Patient Monitoring
The deterministic MIPS M4K core and 80 MHz processing power make the PIC32MX675F256LT-80I/PF suitable for low-to-mid complexity medical monitoring peripherals such as pulse oximeter front-ends, blood-pressure cuffs, and portable diagnostic data loggers. The integrated 16-channel ADC supports multiple sensor inputs, while the Ethernet MAC enables connectivity to hospital networks for bedside data collection. Note that this device does not carry IEC 60730/medical safety certifications by default; designs targeting FDA-cleared medical devices must perform their own compliance validation and consider the medical-grade PIC32MK or PIC32MM families for higher-integrity applications. The 256 KB Flash supports secure bootloaders for field firmware updates.
Recomendado
Embedded Web Server / IoT Node
The integrated Ethernet MAC and 64 KB SRAM enable self-contained embedded web servers for IoT nodes, sensor hubs, and remote telemetry units. Microchip's MLA TCP/IP or Harmony Net stacks provide HTTP, TCP, UDP, and DHCP servers with example firmware for web-based configuration UIs and SNMP monitoring. The PIC32MX675F256LT-80I/PF serves as the IoT node's main MCU and networking co-processor in a single chip, reducing BOM cost versus multi-chip Ethernet solutions. The PMP (Parallel Master Port) connects to a small TFT LCD for local status display, and the dual SPI controllers support external Flash for data logging or WiFi modules for hybrid Ethernet/WiFi redundancy.
Recomendado
Point-of-Sale (POS) Terminal
POS terminals benefit from the PIC32MX675's combined Ethernet, USB, and high-performance 32-bit core for payment processing peripherals and receipt printers. The USB OTG controller supports USB barcode scanners, magnetic-stripe readers, and customer-facing displays over USB HID or CDC classes. The integrated Ethernet MAC connects to store networks for transaction authorization, while the 80 MHz core runs cryptographic libraries for end-to-end encryption. The 256 KB Flash stores the bootloader and main application, and the dual UART controllers drive the receipt printer and serial cash drawer. The 53 GPIO pins interface to keypads, displays, and customer-facing indicator LEDs.
Recomendado
Capacitive Touch Control Panel
The PIC32MX675's CTMU (Charge Time Measurement Unit) provides hardware-based capacitive touch sensing across up to 16 channels, enabling glass-fronted control panels without dedicated touch ICs. The on-chip CTMU measures the discharge time of a reference capacitor through a sense pin, allowing reliable touch detection even with thick overlay glass up to 5 mm. Combined with the Ethernet MAC, designers can implement networked touch panels for smart-home, industrial, and appliance control applications. The 256 KB Flash stores the touch algorithm and communication stack, while the 64 KB RAM buffers the web page assets for remote configuration.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para PIC32MX675F256LT-80I/PF — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | PIC32MX675F256L-80I/PF | PIC32MX575F256LT-80I/PF | PIC32MX575F512LT-80I/BG |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-pin TQFP (14x14 mm) | 100-pin TQFP (14x14 mm) - same | 100-pin TQFP (14x14 mm) - same | 100-pin TQFP (14x14 mm) - same |
| Core Clock (max) | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 512 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB |
| Ethernet MAC | 10/100 (MII/RMII) | 10/100 (MII/RMII) | Not integrated | Not integrated |
| 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 |
| I/O Pins | 53 | 53 | 53 | 53 |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| Unit Price @1000 | 6.45 USD | 6.45 USD | Lower (no Ethernet MAC) | Higher (more Flash) |
Diferenciadores clave
- Integrated 10/100 Ethernet MAC versus MX575 series (frente a PIC32MX575F256LT-80I/PF)
- Lower unit cost than 512KB Flash variant (frente a PIC32MX575F512LT-80I/BG)
- Tape-and-reel versus tray packaging variant (frente a PIC32MX675F256L-80I/PF)
Notas de diseño
Estimated: at 80 MHz full activity with all peripherals enabled, core current consumption is approximately 70 mA from the 2.3-3.6 V supply. Decouple every VDD pin pair with a 0.1 uF X7R ceramic capacitor placed within 50 mils (1.27 mm) of the pin pair, and add a single 10 uF bulk tantalum or ceramic capacitor at the regulator output. The internal 1.8 V regulator requires a low-ESR 10 uF ceramic on pin 72 (VCAP) for stability; do not use Y5V dielectric at this capacitor as ESR/temperature variation can cause regulator instability at high core load.
The 100-pin TQFP at 0.5 mm pitch requires 12 mil (0.30 mm) traces and 8 mil solder mask web. Use a 4-layer PCB with continuous VDD and VSS planes to minimize supply inductance for the 80 MHz switching core. Place the 8 MHz or 25 MHz primary crystal within 200 mils (5 mm) of OSC1/OSC2 pins, surrounded by a grounded copper guard ring to attenuate radiated noise coupling into adjacent analog signals such as ADC inputs.
Route Ethernet MII traces as a matched 50 ohm impedance group on the top layer over a continuous ground plane, keeping all 16 MII signals within 1 cm of matched lengths (within 25 mil skew). For RMII mode, the 50 MHz reference clock must be routed with controlled impedance and terminated at the PHY if trace length exceeds 50 mm. Place the PHY within 50 mm of the MCU and use series resistors near the PHY RX inputs to dampen reflections if cable ESD transients are anticipated.
A frequent mistake is leaving the MCLR pin floating. Always tie MCLR to VDD through a 10 kohm pull-up resistor and add a 100 nF decoupling capacitor to ground for noise immunity; without this, spurious resets will occur from EMI events. Another common error is configuring the ADC without a delay between channel switches - the 16-channel ADC requires a minimum 200 ns acquisition time, and reading immediately after a channel change introduces up to 1 LSB error in the conversion result.
Información de cumplimiento
RoHS and lead-free per Microchip product declaration. Not AEC-Q100 qualified - for automotive designs consider the PIC32MK family. Halogen-free status should be confirmed against the latest Microchip material declaration certificate.
