PIC32MX675F256L-80V/BG - 80MHz 256KB Flash MCU | Microchip
MPN: PIC32MX675F256L-80V/BG ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.85 | $11.85 |
| 10 | $10.67 | $106.70 |
| 100 | $9.48 | $948.00 |
| 500 | $8.55 | $4,275.00 |
| 1,000 | $7.92 | $7,920.00 |
PIC32MX675F256L-80V/BG Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), data memory (SRAM), and integrated peripherals. The PIC32MX family specifically targets embedded connectivity applications, sitting within the broader taxonomy: 32-bit MCU -> embedded controller -> semiconductor. MIPS-based MCUs offer deterministic performance, competitive code density, and strong compiler support through GCC and MPLAB XC32. Microchip's MPLAB Harmony framework provides royalty-free middleware (TCP/IP stacks, USB, graphics, file systems) to accelerate development on this part.
The integrated Ethernet MAC and USB-OTG controller distinguish this part from lower-end PIC32 variants, eliminating the need for external PHY-less MAC expanders in many designs. The 83 GPIO pins support up to five 16-bit timers with capture/compare/PWM, plus an input capture module and output compare module for waveform synthesis. The 16-channel 1 Msps 10-bit ADC enables direct sensor interfacing without an external ADC. A 4-channel DMA controller offloads memory transfers, freeing the CPU for application logic.
The 121-ball TFBGA package provides a compact footprint while exposing the parallel master port (PMP) for external bus interfacing to memories or graphics controllers. With industrial temperature grade and 3.3V single-supply operation, the part suits factory automation, point-of-sale terminals, building automation controllers, and networked sensor hubs where wired connectivity is required.
When designing with this part, ensure the 3.3V supply is well-decoupled with 100nF ceramic plus 10uF bulk capacitors near each VDD/VSS pair, and that the Ethernet PHY uses the RMII interface correctly. The TFBGA requires X-ray or rework station inspection for prototype rework.
Drop-in alternatives for PIC32MX675F256L-80V/BG — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC32MX675F256L-80V/BG (same form factor and footprint) — differing in ADC, Package, DMA Channels, USB, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX675F256L-80I/BG
✅ Drop-In✓ In Stock
$6.2 / Unit
View Datasheet →PIC32MX675F256H-80V/BG
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX795F512L-80V/BG
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX775F256L-80V/BG
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$6.55 / Unit
View Datasheet →PIC32MX575F512L-80V/BG
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX664F128L-V/BG
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$7.41 / Unit
View Datasheet →PIC32MX675F256L-80V/BG Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Data Bus Width | 32-bit |
| Max Clock Frequency | 80 MHz |
| Program Memory Size | 256 KB Flash |
| RAM Size | 64 KB |
| Package Type | 121-ball TFBGA (10x10mm) |
| Pitch | 0.8 mm |
| Operating Supply Voltage | 2.3 V to 3.6 V |
| Operating Temperature Range | -40C to +105C |
| I/O Pins | 83 |
| ADC | 10-bit, 16-channel, 1 Msps |
| Ethernet | 10/100 Mbps MAC (RMII/MII) |
| USB | USB 2.0 Full-Speed OTG |
| Timers | Five 16-bit |
| DMA Channels | 4 |
PIC32MX675F256L-80V/BG 121-ball tfbga (10x10mm) Pin Configuration Guide
Pin configuration for PIC32MX675F256L-80V/BG (121-ball tfbga (10x10mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC32MX675F256L-80V/BG.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MX675F256L-80V/BG is suitable for 6 applications: Industrial Ethernet Gateway, USB-OTG Point-of-Sale Terminal, Building Automation Controller, Networked Data Acquisition System, RFID Reader / Access Control Panel, Medical Device Interface / Patient Monitor.
Industrial Ethernet Gateway
The PIC32MX675F256L-80V/BG is purpose-built for industrial Ethernet gateways thanks to its integrated 10/100 Mbps MAC with MII/RMII PHY interface, eliminating an external connectivity co-processor and reducing BOM cost. The 80MHz MIPS M4K core runs Microchip's MPLAB Harmony TCP/IP stack with concurrent throughput of 5+ Mbps while leaving CPU headroom for protocol conversion (Modbus TCP, EtherNet/IP, MQTT-SN). The 256KB Flash accommodates full TLS stacks and the 64KB SRAM supports multi-socket buffering. The -40C to +105C V-temperature grade permits installation inside factory control cabinets and outdoor enclosures. The USB-OTG Full-Speed controller enables local configuration via a memory stick or diagnostics dongle during commissioning.
Recommended
USB-OTG Point-of-Sale Terminal
The integrated USB 2.0 Full-Speed On-The-Go controller makes PIC32MX675F256L-80V/BG ideal for compact POS terminals and EFT-PIN terminals where the device must act as both USB host (for printers, barcode scanners, NFC readers) and USB device (for programming/cert injection). The 80MHz core handles cryptography (AES-128 in software via MPLAB Harmony) alongside USB stack duties without offloading to external co-processors. The 16-channel 10-bit ADC interfaces directly with thermal printer temperature sensors and battery voltage monitors. The 121-ball TFBGA package keeps board area under 25x25mm, enabling handheld form factors. The 64KB RAM and 256KB Flash accommodate small embedded web servers for diagnostic interfaces.
Recommended
Building Automation Controller
Building automation controllers (BACnet gateways, HVAC zone controllers, lighting hubs) leverage the PIC32MX675F256L-80V/BG's Ethernet MAC for IP-based building networks while running BACnet/IP or Modbus TCP on top. The 83 GPIO pins drive multi-zone HVAC actuators, relay outputs for lighting circuits, and one-wire sensor inputs (via UART or GPIO bit-bang). The 16-channel ADC captures temperature, humidity, and pressure transducer signals. The -40C to +105C V-temperature grade covers mechanical-room deployments. MPLAB Harmony's TCP/IP and SNTP libraries handle time synchronization for scheduled events without external RTC chips (the internal RTCC handles timekeeping on backup power).
Recommended
Networked Data Acquisition System
The PIC32MX675F256L-80V/BG forms the heart of multi-channel networked data acquisition systems where sensor data must be aggregated, timestamped, and forwarded over Ethernet or USB to a host. The 16-channel 10-bit ADC at 1 Msps samples sensor arrays, while the 4-channel DMA controller transfers samples to RAM without CPU intervention. The 64KB RAM enables circular sample buffers for high-speed burst captures. The 80MHz MIPS core runs Microchip's Harmony TCP/IP stack to publish data over MQTT or HTTP/REST. The -40C to +105C V-temperature grade supports industrial test cells, vibration monitoring stations, and remote oil/gas telemetry.
Recommended
RFID Reader / Access Control Panel
RFID reader and access control panels rely on the PIC32MX675F256L-80V/BG's Ethernet for centralized credential management (Wiegand-to-IP bridging, OSDP-over-IP), USB-OTG for local enrollment via memory stick, and 83 GPIO pins for door strike relays, status LEDs, and Wiegand D0/D1 inputs from legacy readers. The 80MHz core runs cryptographic libraries for MIFARE DESFire and iCLASS authentication. The 256KB Flash stores cardholder databases for offline operation during network outages. The 121-ball TFBGA package fits inside slim door-mounted reader enclosures. The industrial V-temperature grade withstands outdoor gate-controller installations.
Recommended
Medical Device Interface / Patient Monitor
The PIC32MX675F256L-80V/BG serves as the connectivity hub in medical device interfaces and bedside patient monitors where the integrated Ethernet provides HL7/TCP-IP gateway capability to hospital networks and USB-OTG connects to local diagnostic peripherals. The 16-channel ADC acquires vital-sign analog signals (ECG, SpO2 photodiode current, temperature thermistor bridge) at sufficient resolution for bedside monitoring. The 64KB SRAM accommodates real-time waveform ring buffers. Note: the PIC32MX675F256L-80V/BG is NOT FDA-cleared for life-supporting applications; for safety-critical medical use, designers should select an IEC 60730-compliant MCU family. The industrial V-temperature grade suits clinical-environment deployments.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX675F256L-80V/BG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX675F256L-80I/BG | PIC32MX795F512L-80V/BG | PIC32MX775F256L-80V/BG | PIC32MX575F512L-80V/BG | PIC32MX664F128L-V/BG |
|---|---|---|---|---|---|---|
| Package | 121-TFBGA (10x10mm) | 121-TFBGA (10x10mm) - same | 121-TFBGA (10x10mm) - same | 121-TFBGA (10x10mm) - same | 121-TFBGA (10x10mm) - same | 121-TFBGA (10x10mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash | 256 KB | 256 KB | 512 KB | 256 KB | 512 KB | 128 KB |
| RAM | 64 KB | 64 KB | 128 KB | 64 KB | 64 KB | 32 KB |
| Max Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Ethernet MAC | Yes (10/100) | Yes (10/100) | Yes (10/100) | Yes (10/100) | No | Yes (10/100) |
| USB OTG | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | No | Yes (Full-Speed) |
| CAN | No | No | Yes | Yes | No | No |
| Temperature Grade | -40C to +105C (V) | -40C to +85C (I) | -40C to +105C (V) | -40C to +105C (V) | -40C to +105C (V) | -40C to +105C (V) |
Key Differentiators
- Integrated Ethernet MAC and USB-OTG in a single-chip 121-ball TFBGA (vs PIC32MX575F512L-80V/BG)
- 64KB SRAM with single-cycle access at 80MHz (vs PIC32MX664F128L-V/BG)
- V-grade industrial temperature (-40C to +105C) (vs PIC32MX675F256L-80I/BG)
- MPLAB Harmony middleware ecosystem with TCP/IP, USB, and graphics libraries (vs Generic Cortex-M3/M4 competitors (e.g., STM32F107))
Design Notes
The PIC32MX675F256L-80V/BG operates from a single 2.3V-3.6V supply on VDD; the internal 1.8V core LDO is self-contained. Place one 100nF 0.1uF X7R ceramic decoupling capacitor adjacent to each VDD/VSS pair (typically 6 pairs on this 121-ball TFBGA), plus a single 10uF X5R bulk capacitor near the package. The USB transceiver VUSB pin requires a separate 100nF + 4.7uF capacitor network as specified in the USB OTG section of the datasheet; do not share the main VDD decoupling. The Ethernet RMII/MII I/O group has its own voltage rail that may be tied to VDD or to a separate 1.8V/2.5V rail depending on PHY choice.
Estimated: at 80MHz core clock and full peripheral activity, the PIC32MX675F256L-80V/BG draws approximately 60-80mA from VDD (3.3V), corresponding to 200-265mW power dissipation. The 121-ball TFBGA package has a theta_JA of approximately 25 C/W on a standard 4-layer JEDEC PCB (per Microchip package thermal data). The resulting junction-to-ambient temperature rise is 5-7C at full load, comfortably within the -40C to +125C junction range. No heatsink is required for industrial applications, but the board should be laid out with a continuous ground plane beneath the TFBGA to maximize heat spreading.
The 121-ball TFBGA uses 0.8mm ball pitch, requiring 0.4mm-pitch escape routing and a minimum 4-layer PCB with HDI micro-vias for breakout. Route differential-pair Ethernet RMII signals (REF_CLK, RX_D0/D1, TX_EN, CRS_DV) with 50-ohm controlled impedance and length matching within 1mm; route USB D+/D- as 90-ohm differential with matching within 2mm. Place the 25MHz Ethernet PHY crystal or oscillator within 5mm of the PHY chip with short trace stubs. Microchip provides a recommended PCB footprint and routing guide (AN1232) for the TFBGA package.
Common mistakes when designing with PIC32MX675F256L-80V/BG: (1) Forgetting to configure the PLL input divider when using an external crystal other than 8MHz, resulting in out-of-spec core clocks. (2) Configuring Ethernet RMII without first enabling the REF_CLK output pin, leading to dropped packets. (3) Programming the ADC for fast sampling without inserting the mandatory acquisition time, producing noisy readings. (4) Forgetting to clear the JTAGEN fuse for production units, which leaves the JTAG pins reserved and unavailable as GPIO. (5) Using the USB pull-up resistor configuration for host mode while expecting device mode behavior. Always run the MPLAB Harmony configuration tool to validate peripheral setup.
Compliance Information
RoHS compliant per Microchip product declaration; lead-free SAC305 TFBGA ball terminations. REACH SVHC compliant. NOT AEC-Q100 qualified - not recommended for automotive safety-critical applications. For automotive-grade PIC32, consider PIC32MK family or migrate to SAM E70 (Arm Cortex-M7).
