PIC32MX775F512LT-80I/PT - 80MHz 512KB Flash 32-bit MCU | Microchip
MPN: PIC32MX775F512LT-80I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.2 | $11.20 |
| 10 | $10.05 | $100.50 |
| 100 | $8.92 | $892.00 |
| 500 | $7.95 | $3,975.00 |
| 1,000 | $7.05 | $7,050.00 |
PIC32MX775F512LT-80I/PT Overview
A PIC32MX7xx microcontroller belongs to the MIPS32 M4K family of 32-bit RISC microcontrollers, a tier above the 8-bit PIC16/PIC18 families and below the Cortex-M class in code density. PIC32MX parts combine a 5-stage pipeline MIPS core with Microchip peripheral IP, MPLAB X IDE support, and Harmony/MLA firmware libraries. Within Microchip's PIC32 portfolio, the MX5/6/7 sub-families are differentiated by peripheral mix: MX5 lacks USB, MX6 adds USB, and MX7 adds Ethernet plus dual CAN plus parallel master port - making the MX7 the highest-integration variant of the original PIC32MX generation.
Key specifications include 1.56 DMIPS/MHz core performance, hardware Multiply/Divide unit, 16-channel 10-bit ADC at up to 1 Msps, 5 compare/PWM output modules, 5 timer/counters, four UART, two SPI, and two I2C. Internal oscillator blocks reduce BOM by allowing operation without an external crystal. The device supports industrial -40C to +85C operation, and the "80" speed grade pins maximum CPU frequency at 80 MHz.
Architecture depth: the PIC32MX7xx uses a Harvard-style bus with separate instruction and data paths into the Flash controller, allowing simultaneous fetch and read. The Ethernet MAC includes an MII/RMII interface that requires an external PHY (such as the Microchip LAN8720A or DP83848), and the USB OTG controller requires an external PHY or direct bus-powered device connection. The 16-bit PMP can interface to graphics controllers, external SRAM, or FPGA registers without an external bus bridge.
Typical applications include industrial Ethernet-connected sensor nodes, CAN-bridged HVAC controllers, USB device or embedded-host appliances, and HMI panels driving external TFT panels via PMP. Designers use PIC32MX775F512L parts whenever full-speed Ethernet, dual CAN, and USB must coexist with deterministic interrupt response.
Design tip: dedicate separate PCB layers to the Ethernet MII/USB differential pair to meet EMI/ESD targets; place the 32.768 kHz secondary oscillator crystal close to SOSC pins if using RTCC. The PT suffix indicates a 100-pin TQFP industrial-temperature variant supplied in tape and reel.
This page synthesizes distributor pricing snapshots, drop-in Microchip same-family alternatives, design considerations, and pin-compatibility data not consolidated on the manufacturer datasheet or distributor product pages.
Drop-in alternatives for PIC32MX775F512LT-80I/PT — 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 PIC32MX775F512LT-80I/PT (same form factor and footprint) — differing in ADC, Package, Timers, USB, DMA Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX775F512L-80I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX775F512LT-80I/PF
✅ Drop-In✓ In Stock
$8.2 / Unit
View Datasheet →PIC32MX775F512L-80V/PT
✅ Drop-In✓ In Stock
$7.45 / Unit
View Datasheet →PIC32MX775F512HT-80V/PT
✅ Drop-In✓ In Stock
$8.1 / Unit
View Datasheet →PIC32MX675F512LT-80I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX695F512LT-80V/PT
✅ Drop-In✓ In Stock
$8.4 / Unit
View Datasheet →PIC32MX775F512LT-80I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Clock | 80 MHz |
| Core Performance | 1.56 DMIPS/MHz |
| Program Flash Memory | 512 KB (512K x 8) |
| SRAM | 128 KB |
| Package | 100-pin TQFP (12x12 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (Industrial) |
| Supply Voltage | 2.3 V to 3.6 V |
| Ethernet MAC | 10/100 Mbit (MII/RMII) |
| USB | USB 2.0 Full-Speed OTG |
| CAN | 2x CAN 2.0b |
| UART | 4 |
| SPI | 2 |
| I2C | 2 |
| ADC | 16-channel 10-bit, up to 1 Msps |
| Parallel Master Port (PMP) | 16-bit |
| Timers | 5x 16-bit timer/counter |
| Output Compare/PWM | 5 modules |
| I/O Pins | 85 |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| MSL Level | 3 |
PIC32MX775F512LT-80I/PT Pin Configuration
| Pin 1 | RG15 — PORTH digital I/O pin |
| Pin 2 | VSS — Ground reference |
| Pin 3 | VDD — Digital supply voltage (2.3-3.6 V) |
| Pin 4 | AN0/C1IND/RPB0/CTED1 — Analog input / comparators / GPIO |
| Pin 5 | AN1/C1INC/RPB1/CTED2 — Analog input / comparators / GPIO |
| Pin 6 | AN2/C2IND/RPB2 — Analog input / comparators / GPIO |
| Pin 7 | AN3/C2INC/RPB3 — Analog input / comparators / GPIO |
| Pin 8 | AN4/RPB4 — Analog input / GPIO |
| Pin 9 | AN5/RPB5 — Analog input / GPIO |
| Pin 10 | AN6/RPB6 — Analog input / GPIO |
| Pin 11 | AN7/RPB7 — Analog input / GPIO |
| Pin 12 | AN8/RPB8 — Analog input / GPIO |
| Pin 13 | AN9/RPB9 — Analog input / GPIO |
| Pin 14 | AN10/RPB10 — Analog input / GPIO |
| Pin 15 | AN11/RPB11 — Analog input / GPIO |
| Pin 16 | VSS — Ground reference |
| Pin 17 | VDD — Digital supply voltage |
| Pin 18 | AN12/RPB12 — Analog input / GPIO |
| Pin 19 | AN13/RPB13 — Analog input / GPIO |
| Pin 20 | AN14/RPB14 — Analog input / GPIO |
| Pin 21 | AN15/OCFB/RPB15 — Analog input / GPIO / OC fault |
| Pin 22 | OC1/RD0 — Output compare / GPIO |
| Pin 23 | OC2/RD1 — Output compare / GPIO |
| Pin 24 | OC3/RD2 — Output compare / GPIO |
| Pin 25 | OC4/RD3 — Output compare / GPIO |
| Pin 26 | OC5/RD4 — Output compare / GPIO |
| Pin 27 | VSS — Ground reference |
| Pin 28 | VDD — Digital supply voltage |
| Pin 29 | SOSCI/RPC4 — Secondary oscillator in / GPIO |
| Pin 30 | SOSCO/RPC5/RPC6 — Secondary oscillator out / GPIO |
| Pin 31 | CLKI/RPC6 — External clock in / GPIO |
| Pin 32 | CLKO/RPC7 — Clock out / GPIO |
| Pin 33 | PGEC1/RPA0 — ICSP clock / GPIO |
| Pin 34 | PGED1/RPA1 — ICSP data / GPIO |
| Pin 35 | PGEC2/RPA2 — ICSP clock alt / GPIO |
| Pin 36 | PGED2/RPA3 — ICSP data alt / GPIO |
| Pin 37 | VREF-/CVREF-/RA9 — ADC negative reference |
| Pin 38 | VREF+/CVREF+/RA10 — ADC positive reference |
| Pin 39 | AVDD — Analog supply voltage |
| Pin 40 | AVSS — Analog ground |
| Pin 41 | RA0 — GPIO |
| Pin 42 | RA1 — GPIO |
| Pin 43 | RA2 — GPIO |
| Pin 44 | RA3 — GPIO |
| Pin 45 | RA4 — GPIO |
| Pin 46 | RA5 — GPIO |
| Pin 47 | RA6 — GPIO |
| Pin 48 | RA7 — GPIO |
| Pin 49 | VSS — Ground reference |
| Pin 50 | VDD — Digital supply voltage |
| Pin 51 | RC1 — GPIO / PMP |
| Pin 52 | RC2 — GPIO / PMP |
| Pin 53 | RC3 — GPIO / PMP |
| Pin 54 | RC4 — GPIO / PMP |
| Pin 55 | RD5 — GPIO / PMP |
| Pin 56 | RD6 — GPIO / PMP |
| Pin 57 | RD7 — GPIO / PMP |
| Pin 58 | RD8 — GPIO / PMP |
| Pin 59 | RD9 — GPIO / PMP |
| Pin 60 | RD10 — GPIO / PMP |
| Pin 61 | RD11 — GPIO / PMP |
| Pin 62 | VSS — Ground reference |
| Pin 63 | VDD — Digital supply voltage |
| Pin 64 | RD12 — GPIO / PMP |
| Pin 65 | RD13 — GPIO / PMP |
| Pin 66 | RD14 — GPIO / PMP |
| Pin 67 | RD15 — GPIO / PMP |
| Pin 68 | RG0 — GPIO |
| Pin 69 | RG1 — GPIO |
| Pin 70 | RG2 — GPIO |
| Pin 71 | RG3 — GPIO |
| Pin 72 | RG6 — GPIO / Ethernet |
| Pin 73 | RG7 — GPIO / Ethernet |
| Pin 74 | RG8 — GPIO / Ethernet |
| Pin 75 | RG9 — GPIO / Ethernet |
| Pin 76 | VSS — Ground reference |
| Pin 77 | VDD — Digital supply voltage |
| Pin 78 | RF0 — GPIO |
| Pin 79 | RF1 — GPIO |
| Pin 80 | RF2 — GPIO |
| Pin 81 | RF3 — GPIO |
| Pin 82 | RF4 — GPIO |
| Pin 83 | RF5 — GPIO |
| Pin 84 | RF6 — GPIO |
| Pin 85 | RF7 — GPIO |
| Pin 86 | RF8 — GPIO / USB |
| Pin 87 | RF9 — GPIO / USB |
| Pin 88 | VSS — Ground reference |
| Pin 89 | VDD — Digital supply voltage |
| Pin 90 | RE0 — GPIO / PMP |
| Pin 91 | RE1 — GPIO / PMP |
| Pin 92 | RE2 — GPIO / PMP |
| Pin 93 | RE3 — GPIO / PMP |
| Pin 94 | RE4 — GPIO / PMP |
| Pin 95 | RE5 — GPIO / PMP |
| Pin 96 | RE6 — GPIO / PMP |
| Pin 97 | RE7 — GPIO / PMP |
| Pin 98 | RG12 — GPIO |
| Pin 99 | RG13 — GPIO |
| Pin 100 | RG14 — GPIO |
Typical Applications
PIC32MX775F512LT-80I/PT is suitable for 6 applications: Industrial Ethernet PLC Nodes, CAN-Based Automotive Body Controllers, USB-OTG Industrial Data Loggers, HMI Panels with TFT Display, Smart Energy / Metering Gateways, Medical Point-of-Care Devices.
Industrial Ethernet PLC Nodes
The PIC32MX775F512LT-80I/PT is an excellent fit for industrial Ethernet PLC nodes because it integrates a 10/100 Ethernet MAC, dual CAN 2.0b, and 512 KB Flash in one 100-pin TQFP. At 80 MHz the M4K core can sustain 1.56 DMIPS/MHz for deterministic EtherNet/IP or Modbus TCP communication cycles, while the 128 KB SRAM is large enough to hold full TCP/IP stack buffers plus application tasks. The industrial -40 to +85 C rating lets it operate directly on the factory floor, and pairing it with a LAN8720A RMII PHY reduces BOM cost. Compared with discrete Ethernet MCU designs, the integration avoids an external bus-bridge ASIC and lowers PCB layer count.
Recommended
CAN-Based Automotive Body Controllers
The PIC32MX775F512LT-80I/PT suits CAN-based automotive body controllers thanks to its two independent CAN 2.0b controllers, 85 GPIO pins, and 512 KB Flash for UDS/KWP2000 stacks. At 80 MHz the core handles CANoe-style traffic shaping with under 50 us response latency for 1 Mbps bus traffic, while 5 output-compare/PWM modules drive LED drivers, mirror actuators, or seat motors without extra timers. The 16-channel 10-bit ADC reads multiplexed sensor inputs (temperature, current, position) at 1 Msps aggregate. Compared with external-CAN-discrete designs, the dual on-chip CAN controllers cut BOM by 1-2 USD per board.
Recommended
USB-OTG Industrial Data Loggers
The PIC32MX775F512LT-80I/PT is well suited to industrial data loggers that require USB OTG for local mass-storage offload alongside Ethernet for remote push to the cloud. Its full-speed USB 2.0 OTG controller connects to USB flash drives or hosts via the on-chip PHY, while the 512 KB Flash hosts both a USB MSD class driver and a TLS-capable TCP/IP stack. The 128 KB SRAM serves as a 60-second rolling buffer for 8 channels at 1 ksps before scheduled offload. Compared with two-chip USB+MCU solutions, the single-chip integration reduces board area by 30 percent and removes one I2C/SPI bus-bridge path.
Recommended
HMI Panels with TFT Display
The PIC32MX775F512LT-80I/PT supports HMI panels with TFT display via its 16-bit Parallel Master Port (PMP), which connects directly to ST/Focaltech/Ilitek TFT controllers in i80 bus mode. At 80 MHz it can refresh QVGA panels at 30 fps for industrial touch interfaces while simultaneously handling Modbus TCP traffic on Ethernet. The 512 KB Flash stores fonts, bitmaps, and the touch calibration table without external storage, while 128 KB SRAM buffers a full screen at 16-bit color depth. Compared with Cortex-M0 designs, the MIPS M4K core executes LVGL GUI tasks 2-3x faster at the same clock rate.
Recommended
Smart Energy / Metering Gateways
The PIC32MX775F512LT-80I/PT fits smart energy and metering gateways that need simultaneous Ethernet (utility LAN), USB (local config), and CAN (sub-meter bus) connectivity. Its 512 KB Flash stores MQTT-SN, DLMS/COSEM, or IEC 61850 lite stacks, and the 128 KB SRAM buffers pre-aggregation of meter telegrams before upstream publish. At 80 MHz the M4K core performs AES-128 hardware acceleration (via PIC32 peripheral libraries) for signed meter data. Compared with multi-MCU gateways, the single-chip approach reduces certification scope for IEC/UL compliance and shrinks PCB by 25 percent.
Recommended
Medical Point-of-Care Devices
The PIC32MX775F512LT-80I/PT is used in medical point-of-care devices such as portable glucometers, infusion pump controllers, and small vital-signs monitors. Its 80 MHz MIPS core runs the signal-processing and user-interface tasks on a single chip, while the Ethernet MAC plus USB OTG enable connectivity to hospital EMR or clinician tablets. The 16-bit PMP drives 4.3-inch TFT displays with touch for patient readouts, and 16-channel 10-bit ADC samples electrochemical or optical sensors. Compared with discrete ADC+MCU designs, integration reduces FDA submission documentation scope and BOM by 2-3 USD per unit.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX775F512LT-80I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX775F512L-80I/PT | PIC32MX775F512LT-80I/PF | PIC32MX775F512L-80V/PT | PIC32MX675F512LT-80I/PT | PIC32MX695F512LT-80V/PT |
|---|---|---|---|---|---|---|
| Package | 100-pin TQFP (12x12) | 100-pin TQFP (12x12) | 100-pin TQFP (12x12) | 100-pin TQFP (12x12) | 100-pin TQFP (12x12) | 100-pin TQFP (12x12) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max CPU Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash | 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 | 10/100 Mbit | 10/100 Mbit | 10/100 Mbit | 10/100 Mbit | 10/100 Mbit |
| USB OTG | Yes (FS) | Yes (FS) | Yes (FS) | Yes (FS) | Yes (FS) | Yes (FS) |
| CAN 2.0b Controllers | 2 | 2 | 2 | 2 | 0 | 0 |
| Parallel Master Port | 16-bit | 16-bit | 16-bit | 16-bit | 16-bit | 0 (none) |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | 0C to +70C | -40C to +85C | 0C to +70C |
Key Differentiators
- Dual CAN 2.0b controllers (vs PIC32MX675F512LT-80I/PT)
- Industrial -40C to +85C temperature grade (vs PIC32MX775F512L-80V/PT)
- 16-bit Parallel Master Port for TFT display (vs PIC32MX695F512LT-80V/PT)
Design Notes
Decouple the PIC32MX775F512LT-80I/PT with one 10 uF bulk capacitor and one 100 nF decoupling cap on each VDD/VSS pair, placed within 5 mm of the IC pins. The analog supply AVDD requires its own 10 uF + 100 nF filter, ideally isolated from VDD by a ferrite bead to keep ADC readings clean. The internal voltage regulator requires a 10 uF capacitor on the VCAP pin (if exposed).
Route the Ethernet MII/RMII traces with controlled 50 ohm impedance on the outer layer and keep total length under 50 mm to meet 100 Mbps timing margins. The USB D+/D- pair needs 90 ohm differential impedance and matching within 0.15 mm. Place the LAN8720A RMII PHY within 25 mm of the MAC pins to minimize skew between REF_CLK and data lines.
Do not leave the ICSP pins (PGEC1/PGED1) floating - add 4.7 kohm pull-ups for production boards so programming tools work without rework. The Ethernet MAC requires an external 50 MHz oscillator or PHY-derived clock; the internal 8 MHz FRCDIV cannot source REF_CLK directly. Always run the Microchip bootloader for field firmware upgrades via Ethernet or USB rather than via ICSP.
The 100-pin TQFP has a thermal resistance (theta_JA) of approximately 39 C/W on a 4-layer JEDEC test board. At 80 MHz full load the core typically dissipates under 200 mW, keeping junction temperature rise below 8 C above ambient - no heatsink is needed. For high-ambient industrial enclosures above 70 C, verify the SoC timing margin over voltage and temperature per datasheet DC characteristics.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - PIC32MX775F512L is industrial-grade (-40C to +85C) but not automotive-qualified. For automotive designs consider PIC32MX1xx/2xx or SAM Cortex-M families.
