PIC32MX775F512L-80I/BG - 80MHz 32-bit MCU 512KB Flash | Microchip
MPN: PIC32MX775F512L-80I/BG ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.42 | $9.42 |
| 10 | $8.51 | $85.10 |
| 100 | $7.18 | $718.00 |
| 500 | $6.34 | $3,170.00 |
| 1,000 | $5.86 | $5,860.00 |
PIC32MX775F512L-80I/BG Overview
A 32-bit microcontroller (MCU) is a programmable processor with integrated Flash program memory, RAM, peripherals and a CPU core, used as the central controller in embedded systems. PIC32 sits in the hierarchy: microcontroller -> embedded processor -> semiconductor. The MX775 sub-family specifically addresses connectivity by combining an Ethernet MAC, USB OTG and CAN on-chip, replacing external PHY-bridge chips in many designs and reducing BOM cost.
Key features include 51 I/O ports, 8-channel DMA, 16-bit timers, a 10-bit ADC up to 1 Msps, an RTCC, and JTAG/ICSP debug. The 121-TFBGA package exposes the full peripheral set and gives 51 usable GPIO, but the 0.8mm ball pitch demands PCB fabrication with 4/4 mil trace/spacing and microvia stackups for fan-out, a constraint the Notice and trade-off guidance covers in the design notes.
The PIC32MX775F512L-80I/BG also provides five I2C buses, four SPI buses, six UART modules, two CAN controllers and a full-speed USB OTG with on-chip transceiver. Code execution is 1.56 DMIPS/MHz, so 80 MHz delivers about 125 DMIPS, more than enough for protocol stacks such as TCP/IP, USB CDC and CANopen while leaving headroom for an RTOS.
Typical applications include industrial Ethernet gateways, USB-CAN bridges, building-automation controllers, embedded web servers, and point-of-sale terminals. The integrated 10/100 MAC lets designers add Ethernet without an external controller, while USB OTG supports device, host and OTG roles for storage, charging or peripherals.
When designing with this part, validate the 80 MHz operation against voltage and temperature (2.3-3.6V, -40 to +85C for the -80I industrial grade) and pay attention to the 121-ball TFBGA escape - place at least 4 layers with microvia-in-pad and a continuous ground plane under the BGA. This page synthesizes pricing, drop-in alternatives and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for PIC32MX775F512L-80I/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 PIC32MX775F512L-80I/BG (same form factor and footprint) — differing in USB, ADC, DMA Channels, Package, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX795F512L-80I/BG
✅ Drop-In✓ In Stock
$9.1 / Unit
View Datasheet →PIC32MX775F512LT-80I/BG
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX695F512L-80I/BG
✅ Drop-In✓ In Stock
$14.85 / Unit
View Datasheet →PIC32MX575F512L-80I/BG
✅ Drop-In✓ In Stock
$5.88 / Unit
View Datasheet →PIC32MX675F512L-80I/BG
✅ Drop-In✓ In Stock
$8.2 / Unit
View Datasheet →PIC32MX764F128L-I/BG
✅ Drop-In✓ In Stock
$6.8 / Unit
View Datasheet →PIC32MX775F512L-80I/BG Maximum Ratings & Electrical Characteristics
| Core | MIPS32 M4K 32-bit RISC |
| Maximum Clock Speed | 80 MHz |
| Program Memory (Flash) | 512 KB (512K x 8) |
| Data Memory (RAM) | 64 KB |
| Supply Voltage | 2.3 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial) |
| I/O Pins | 51 |
| Package | 121-TFBGA (10 x 10 mm) |
| Mounting Type | Surface Mount |
| DMA Channels | 8 |
| ADC | 10-bit, up to 1 Msps |
| Ethernet MAC | 10/100 Mbps integrated |
| USB | USB 2.0 OTG (Full-Speed, on-chip transceiver) |
| CAN | 2 x CAN 2.0B controllers |
| UART | 6 |
| SPI | 4 |
| I2C | 5 |
| Timers | 16-bit x 5 + 16-bit Compare x 5 |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant (Lead-Free) |
PIC32MX775F512L-80I/BG 121-tfbga (10 x 10 mm) Pin Configuration Guide
Pin configuration for PIC32MX775F512L-80I/BG (121-tfbga (10 x 10 mm) 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 PIC32MX775F512L-80I/BG.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MX775F512L-80I/BG is suitable for 6 applications: Industrial Ethernet Gateway, USB-CAN Bridge Module, Building Automation Controller, Embedded Web Server / IoT Edge Node, Point-of-Sale (POS) Terminal, Medical Data Acquisition Device.
Industrial Ethernet Gateway
The PIC32MX775F512L-80I/BG's integrated 10/100 Ethernet MAC makes it ideal for industrial Ethernet gateways bridging Modbus TCP, EtherNet/IP and PROFINET networks. With 512 KB Flash and 64 KB RAM, the device has sufficient memory for an lwIP TCP/IP stack plus a web server, while 80 MHz of MIPS M4K performance (~125 DMIPS) handles concurrent connections and protocol translation. Two CAN controllers allow side-by-side CAN-to-Ethernet gateway designs. Compared with external-MAC discrete MCUs, the on-chip MAC removes a bridge chip and reduces BOM cost by $1-2 per node. Place an external PHY such as LAN8720A on RMII to complete the physical layer.
Recommended
USB-CAN Bridge Module
Dual CAN 2.0B controllers plus USB OTG with on-chip transceiver make the PIC32MX775F512L-80I/BG ideal for USB-to-CAN bridge modules used in automotive diagnostics and industrial automation. 80 MHz of CPU headroom handles USB CDC plus CANopen or J1939 protocol stacks simultaneously. 512 KB Flash allows room for both protocol stacks and a small RTOS. Compared with off-the-shelf bridges, a custom design using this MCU is 30-50% cheaper at low volumes and offers firmware-side customization. The 121-TFBGA footprint keeps PCB size under 25x25mm with USB-C and two D-Sub-9 CAN ports.
Recommended
Building Automation Controller
Six UART and four SPI interfaces make the PIC32MX775F512L-80I/BG ideal for building-automation controllers aggregating RS-485 sensor buses (Modbus RTU, BACnet MSTP) and SPI-based radio or HMI interfaces. 51 I/O pins drive relays, optocouplers and keypads without external expanders, while 512 KB Flash supports BACnet and KNX stacks. The -I industrial temperature grade (-40C to +85C) covers outdoor enclosures and unheated equipment rooms. Compared with smaller 64-pin MCUs in the same family, the 775 variant in 121-TFBGA avoids I/O multiplexing constraints and reduces firmware complexity.
Recommended
Embedded Web Server / IoT Edge Node
The PIC32MX775F512L-80I/BG combined with an external PHY becomes a self-contained embedded web server for IoT edge nodes and remote monitoring. 512 KB Flash holds an HTTP server plus MQTT or CoAP client, and 64 KB RAM supports lwIP buffers. Five I2C buses allow multiple sensor breakouts (temperature, humidity, accelerometers) to share the bus. Compared with external-network MCU + WiFi modules, an Ethernet-based design is more reliable for industrial installations. 80 MHz performance keeps response latency under 50 ms for typical REST requests.
Recommended
Point-of-Sale (POS) Terminal
USB OTG (host mode), 6 UART and the 80 MHz MIPS M4K core make the PIC32MX775F512L-80I/BG suitable for compact POS terminals with barcode scanners, receipt printers (UART) and customer-facing displays (SPI). 512 KB Flash stores transaction firmware plus crypto libraries for PIN handling, while 64 KB RAM buffers receipts and barcode parsing. Compared with ARM Cortex-M4 alternatives, the 775 variant offers more UARTs in a smaller package and lower BOM cost. The -I industrial temperature range covers outdoor kiosks and refrigerated cabinets.
Recommended
Medical Data Acquisition Device
The 10-bit 1 Msps ADC plus USB device mode makes the PIC32MX775F512L-80I/BG ideal for medical data acquisition such as pulse oximeters, ECG event recorders and spirometers. USB CDC delivers real-time data to a host PC while the 80 MHz MIPS core performs on-board filtering and RMS calculation. The industrial -40C to +85C temperature grade supports clinical and field environments. Compared with low-pin-count MCUs, the 121-TFBGA exposes analog + digital + USB + UART routing cleanly without I/O sharing conflicts, simplifying EMI/EMC compliance.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX775F512L-80I/BG — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX795F512L-80I/BG | PIC32MX695F512L-80I/BG | PIC32MX575F512L-80I/BG | PIC32MX675F512L-80I/BG | PIC32MX764F128L-I/BG |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 121-TFBGA (10x10 mm) | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same | 121-TFBGA (10x10 mm) - same |
| Maximum Clock 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 | 128 KB |
| RAM | 64 KB | 128 KB | 64 KB | 64 KB | 64 KB | 32 KB |
| Ethernet MAC | Yes (10/100) | Yes (10/100) | Yes (10/100) | No | No | Yes (10/100) |
| USB OTG | Yes (Full-Speed) | Yes (Full-Speed) | Yes (Full-Speed) | No | Yes (Full-Speed) | Yes (Full-Speed) |
| CAN Controllers | 2 | 2 | 2 | 0 | 2 | 2 |
| I/O Pins | 51 | 51 | 49 | 49 | 51 | 51 |
| Hardware Crypto | No | Yes (AES/SHA/DES) | No | No | No | No |
Key Differentiators
- Integrated Ethernet MAC with USB OTG and dual CAN (vs PIC32MX575F512L-80I/BG)
- Larger SRAM (64 KB vs 32 KB) (vs PIC32MX764F128L-I/BG)
- Upgradable to PIC32MX795F512L-80I/BG with crypto engine (vs PIC32MX575F512L-80I/BG)
Design Notes
Estimated: the 121-TFBGA at 0.8 mm ball pitch requires PCB escape routing through the inner rows. Use a 4-layer stackup with microvia-in-pad (0.1 mm/4 mil laser via) on the top layer and 0.2 mm vias on inner layers. Maintain a continuous ground plane under the BGA and stitch vias every 5 mm to keep the return path impedance low. Estimated at standard 1.6 mm FR-4 with Er=4.3.
The PIC32MX775F512L-80I/BG core draws approximately 70 mA at 80 MHz with all peripherals active. Place a 10 uF bulk + 100 nF decoupling capacitor pair within 5 mm of each VDD/VDDCORE pin pair, plus a ferrite bead isolating analog AVDD from digital VDD. Estimated: at 3.3 V, full-load average current ~85 mA, so the 3.3 V LDO must source at least 150 mA for transient headroom.
Route USB DP/DM as a 90 ohm differential pair with length matching within 150 mil. Place the 27 ohm series termination resistors within 5 mm of the MCU pins. For Ethernet RMII, keep traces under 50 mm and route the 50 MHz clock away from switching nodes; consider a series 33 ohm resistor on the clock line for source matching. Estimated characteristic impedance: 90 ohm differential on 0.2 mm dielectric.
Do not exceed 3.6 V on any I/O pin - the 5V-tolerant feature is only available on specific pins. Always configure unused I/O as outputs driving low (not high-Z) to minimize current draw in standby. Wait at least 1 ms after power-up before driving CLK_OUT to allow the internal PLL to lock. Do not connect JTAG TCK to a long trace - keep under 50 mm to avoid debugger communication errors.
Compliance Information
RoHS compliant and lead-free per Microchip product page. Not AEC-Q100 qualified - this is an industrial-grade part (-40C to +85C). REACH compliant. MSL Level 3 per JEDEC J-STD-020.
