PIC32MX764F128L-V/PF - 80MHz 32-bit MCU, 128KB Flash, USB-OTG | Microchip
MPN: PIC32MX764F128L-V/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.1 | $7.10 |
| 10 | $6.4 | $64.00 |
| 100 | $5.65 | $565.00 |
| 500 | $4.95 | $2,475.00 |
| 1,000 | $4.4 | $4,400.00 |
PIC32MX764F128L-V/PF Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, program and data memory, and a rich set of on-chip peripherals used to sense, drive, and connect embedded systems. PIC32MX devices sit in the hierarchy: 32-bit MCU -> MIPS32 M4K core microcontroller -> PIC32 family -> Microchip 32-bit portfolio -> embedded microcontroller -> semiconductor. Compared with 8-bit and 16-bit MCUs, 32-bit PIC32 parts add MPU-class MIPS performance, DMA, and high-bandwidth connectivity (Ethernet, USB-OTG) that older PIC18/PIC24 families cannot deliver.
Key features include: 80 MHz MIPS32 M4K core (1.56 DMIPS/MHz, 3.68 CoreMark/MHz), 128 KB Flash with 32 KB RAM, dedicated DMA controller (8 channels), five 16-bit timers, five IC/OC/PWM modules, two UART/I2C/SPI ports plus one USB-OTG and one Ethernet MAC, a 16-channel 10-bit 1 MSPS ADC, and a Parallel Master Port (PMP) for external bus/display expansion. JTAG and 2-wire ICSP debugging are supported. The 100-pin TQFP provides ample GPIO for mixed-signal designs.
Architecturally, the PIC32MX7 sub-family adds the integrated Ethernet MAC and USB-OTG PHY interface alongside CAN, making it the most-connected variant of the PIC32MX5/6/7 lineup. The M4K core uses a 5-stage pipeline and hardware multiply/divide; DMA offloads memory-to-peripheral transfers, freeing the CPU for application logic. The 10-bit ADC shares dedicated sampling hardware rather than being software bit-banged.
Typical applications: industrial control and HMI panels with Ethernet connectivity, USB device/host peripherals (barcode scanners, data loggers, custom USB audio), CAN-based automotive and building-automation nodes, IoT gateways bridging Ethernet to local sensors, and medical device front panels. Designers often pair the PIC32MX764F128L-V/PF with an external PHY (e.g. DP83848) for Ethernet and with the MCP2200 or MCP2551 for CAN.
Design consideration: the VDD/VSS layout for a 100-pin TQFP needs at least four dedicated ground pours and 0.1 uF + 10 uF decoupling per VDD pin pair; failing to do so causes ADC noise and USB enumeration failures. Two analog supply pins (AVDD/AVSS) must be tied to the digital rails through a ferrite bead if ADC accuracy matters.
This page synthesizes distributor pricing, drop-in same-package alternatives, parametric comparison, and practical design notes that go beyond the manufacturer datasheet to help engineers select, source, and lay out the PIC32MX764F128L-V/PF.
Drop-in alternatives for PIC32MX764F128L-V/PF — 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 PIC32MX764F128L-V/PF (same form factor and footprint) — differing in ADC, Package, Ethernet MAC, Operating Temperature, USB.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX764F128L-I/PF
✅ Drop-In✓ In Stock
$6.69 / Unit
View Datasheet →PIC32MX764F128LT-V/PF
✅ Drop-In✓ In Stock
$5.62 / Unit
View Datasheet →PIC32MX675F512L-80V/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX575F512L-80V/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX664F128L-V/PF
✅ Drop-In✓ In Stock
$5.45 / Unit
View Datasheet →PIC32MX695F512L-80V/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX764F128L-V/PF Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Core Width | 32-bit |
| Maximum CPU Frequency | 80 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| SRAM | 32 KB |
| Package | 100-TQFP (14x14 mm), suffix PF |
| Pin Count | 100 |
| Operating Voltage (VDD) | 2.3 V to 3.6 V |
| Operating Temperature | -40C to +105C (industrial "V") |
| ADC | 10-bit, 16 channels, 1 MSPS |
| Ethernet MAC | 10/100 Mbit (MII/RMII interface, external PHY) |
| USB | USB 2.0 Full-Speed On-The-Go |
| CAN | CAN 2.0b |
| DMA Channels | 8 |
| UART / I2C / SPI | 2 x each |
| Timers | 5 x 16-bit |
| Parallel Master Port (PMP) | Yes |
| Debug Interface | JTAG + 2-wire ICSP |
| Mounting Type | Surface Mount |
| RoHS | Compliant |
PIC32MX764F128L-V/PF Pin Configuration
| Pin 1 | RG15 — General purpose I/O |
| Pin 2 | VDD — Digital supply (3.3V) |
| Pin 3 | EMDIO/PMA0/RA0 — Ethernet MDIO / PMP address |
| Pin 4 | ERXD0/PMA1/RA1 — Ethernet RX data |
| Pin 5 | ERXD1/PMA2/RA2 — Ethernet RX data |
| Pin 6 | ERXERR/PMA3/RA3 — Ethernet RX error |
| Pin 7 | ETXEN/RA4 — Ethernet TX enable |
| Pin 8 | ETXCLK/RA5 — Ethernet TX clock |
| Pin 9 | VSS — Ground |
| Pin 10 | RA6/ETXD0 — Ethernet TX data 0 |
| Pin 11 | RA7/ETXD1 — Ethernet TX data 1 |
| Pin 12 | RB0/PMA4 — PMP address |
| Pin 13 | RB1/PMA5 — PMP address |
| Pin 14 | RB2/PMA6 — PMP address |
| Pin 15 | RB3/PMA7 — PMP address |
| Pin 16 | RB4/PMA8 — PMP address |
| Pin 17 | RB5/PMA9 — PMP address |
| Pin 18 | RB6/PMA10 — PMP address |
| Pin 19 | RB7/PMA11 — PMP address |
| Pin 20 | VSS — Ground |
| Pin 21 | VDD — Digital supply (3.3V) |
| Pin 22 | RC1/ERXCLK — Ethernet RX clock |
| Pin 23 | RC2/ECRS — Ethernet carrier sense |
| Pin 24 | RC3/ECOL — Ethernet collision |
| Pin 25 | RC4/ERXDV — Ethernet RX data valid |
| Pin 26 | OSC1/RC12 — Crystal oscillator input |
| Pin 27 | OSC2/RC13 — Crystal oscillator output |
| Pin 28 | RC14 — General purpose I/O |
| Pin 29 | RC15 — General purpose I/O |
| Pin 30 | VSS — Ground |
| Pin 31 | VDD — Digital supply (3.3V) |
| Pin 32 | RD0/PMD0 — PMP data |
| Pin 33 | RD1/PMD1 — PMP data |
| Pin 34 | RD2/PMD2 — PMP data |
| Pin 35 | RD3/PMD3 — PMP data |
| Pin 36 | RD4/PMD4 — PMP data |
| Pin 37 | RD5/PMD5 — PMP data |
| Pin 38 | RD6/PMD6 — PMP data |
| Pin 39 | RD7/PMD7 — PMP data |
| Pin 40 | VSS — Ground |
| Pin 41 | VDD — Digital supply (3.3V) |
| Pin 42 | RD8/PMD8 — PMP data |
| Pin 43 | RD9/PMD9 — PMP data |
| Pin 44 | RD10/PMD10 — PMP data |
| Pin 45 | RD11/PMD11 — PMP data |
| Pin 46 | RD12/PMD12 — PMP data |
| Pin 47 | RD13/PMD13 — PMP data |
| Pin 48 | RD14/PMD14 — PMP data |
| Pin 49 | RD15/PMD15 — PMP data |
| Pin 50 | VSS — Ground |
| Pin 51 | VDD — Digital supply (3.3V) |
| Pin 52 | RE0/PMRD — PMP read strobe |
| Pin 53 | RE1/PMWR — PMP write strobe |
| Pin 54 | RE2/CS1A — PMP chip select |
| Pin 55 | RE3/CS1B — PMP chip select |
| Pin 56 | RE4/CS2 — PMP chip select |
| Pin 57 | RE5 — General purpose I/O |
| Pin 58 | RE6 — General purpose I/O |
| Pin 59 | RE7 — General purpose I/O |
| Pin 60 | VSS — Ground |
| Pin 61 | VDD — Digital supply (3.3V) |
| Pin 62 | RF0 — General purpose I/O |
| Pin 63 | RF1 — General purpose I/O |
| Pin 64 | RF2 — General purpose I/O |
| Pin 65 | RF3 — General purpose I/O |
| Pin 66 | RF4 — General purpose I/O |
| Pin 67 | RF5 — General purpose I/O |
| Pin 68 | RF6 — General purpose I/O |
| Pin 69 | RF7 — General purpose I/O |
| Pin 70 | VSS — Ground |
| Pin 71 | VDD — Digital supply (3.3V) |
| Pin 72 | RG0 — General purpose I/O |
| Pin 73 | RG1 — General purpose I/O |
| Pin 74 | RG2 — General purpose I/O |
| Pin 75 | RG3 — General purpose I/O |
| Pin 76 | RG6 — General purpose I/O |
| Pin 77 | RG7 — General purpose I/O |
| Pin 78 | RG8 — General purpose I/O |
| Pin 79 | RG9 — General purpose I/O |
| Pin 80 | VSS — Ground |
| Pin 81 | VDD — Digital supply (3.3V) |
| Pin 82 | AN0/C2IN+/RA0 — ADC input |
| Pin 83 | AN1/C2IN-/RA1 — ADC input |
| Pin 84 | AVSS — Analog ground |
| Pin 85 | AVDD — Analog supply (3.3V) |
| Pin 86 | AN2/RB0 — ADC input |
| Pin 87 | AN3/RB1 — ADC input |
| Pin 88 | AN4/RB2 — ADC input |
| Pin 89 | AN5/RB3 — ADC input |
| Pin 90 | VREF-/CVREF-/RB4 — ADC reference low |
| Pin 91 | VREF+/CVREF+/RB5 — ADC reference high |
| Pin 92 | AN8/RB8 — ADC input |
| Pin 93 | AN9/RB9 — ADC input |
| Pin 94 | AN10/RB10 — ADC input |
| Pin 95 | AN11/RB11 — ADC input |
| Pin 96 | AN12/RB12 — ADC input |
| Pin 97 | AN13/RB13 — ADC input |
| Pin 98 | AN14/RB14 — ADC input |
| Pin 99 | AN15/OCFB/RB15 — ADC input / PWM fault |
| Pin 100 | VSS — Ground |
Typical Applications
PIC32MX764F128L-V/PF is suitable for 7 applications: Industrial Ethernet Gateway, USB Barcode / Data-Logger Peripheral, CAN-Based Building Automation Node, IoT Edge Device with TLS / MQTT, Medical Device Front Panel HMI, Industrial Control PLC / Motor Controller, USB Audio / MIDI Device.
Industrial Ethernet Gateway
The PIC32MX764F128L-V/PF is purpose-built for industrial Ethernet gateways because it integrates a 10/100 Mbit MAC (MII/RMII to an external PHY such as DP83848) plus USB-OTG and CAN 2.0b, all in one chip. At 80 MHz the M4K core comfortably runs an lwIP TCP/IP stack with HTTP/MQTT/Modbus-TCP servers, while the 8-channel DMA engine moves packet buffers without CPU overhead. The 100-pin TQFP exposes ample GPIO for status LEDs, RS-485 transceivers, and EEPROM for configuration storage. Engineers can move to the higher-memory PIC32MX695F512L variant if their firmware needs larger TLS buffers.
Recommended
USB Barcode / Data-Logger Peripheral
The PIC32MX764F128L-V/PF's integrated USB 2.0 Full-Speed On-The-Go controller supports both USB host (scanner, keyboard, mass storage) and USB device modes without an external interface chip. At 80 MHz the M4K core has plenty of headroom for USB class drivers (HID, CDC, MSD, vendor) plus application logic, and 128 KB Flash accommodates composite-device stacks. The 32 KB SRAM is enough for typical 64-byte USB packets and small file-system caches. The 100-pin TQFP gives enough GPIO for LCD, keypad, and buzzer in scanner housings.
Recommended
CAN-Based Building Automation Node
The PIC32MX764F128L-V/PF's CAN 2.0b controller paired with an MCP2551 transceiver makes it ideal for BACnet/CANopen building-automation nodes such as HVAC controllers and lighting panels. The 80 MHz M4K core runs BACnet MS/TP or CANopen stacks with cycle times well under 10 ms, while the on-chip 10-bit 1 MSPS ADC handles thermistor, CT-current, and 0-10 V dimmer inputs without external converters. The 100-pin TQFP gives designers room for keypad, character LCD via PMP, and isolated RS-485.
Recommended
IoT Edge Device with TLS / MQTT
For IoT edge nodes bridging Ethernet to local sensors, the PIC32MX764F128L-V/PF combines an 80 MHz M4K core, 128 KB Flash and 32 KB SRAM in a 100-pin TQFP, with on-chip Ethernet MAC and USB-OTG. Microchip's MPLAB Harmony v3 framework provides TCP/IP, MQTT, and wolfSSL/TLS support - firmware can publish sensor data over MQTT-TLS with reasonable RAM budgeting. Engineers targeting secure boot can leverage the on-chip Flash with Microchip's CryptoAuthLib for ECC-curve key storage.
Recommended
Medical Device Front Panel HMI
The PIC32MX764F128L-V/PF's 80 MHz MIPS32 M4K core drives character LCDs or small TFT displays via the on-chip Parallel Master Port (PMP), while its USB-OTG allows service technicians to perform firmware updates via USB mass-storage drag-and-drop. The 10-bit 1 MSPS ADC reads sensor analog front-ends with 0.5 LSB typical linearity. The 100-pin TQFP package supports -40C to +105C operation (V grade), covering clinical and laboratory environments. Designers should add watchdog timer and external supervisor for IEC 60730 / IEC 60601-1 compliance.
Recommended
Industrial Control PLC / Motor Controller
The PIC32MX764F128L-V/PF suits compact PLC and motor-control front-end boards where 100-pin TQFP gives enough GPIO for 16+ optically isolated digital inputs, 8 PWM outputs, quadrature encoder inputs, and a CAN/RS-485 link to a master controller. Five 16-bit timers with Input Capture provide precise period measurement for encoder feedback; 5 OC/PWM modules drive MOSFET gate drivers via isolation. The 10-bit 1 MSPS ADC samples current shunts, DC-link voltage, and temperature sensors in real time. The "V" temperature grade covers industrial cabinets.
Recommended
USB Audio / MIDI Device
The PIC32MX764F128L-V/PF's USB-OTG and 80 MHz processing headroom enable class-compliant USB audio 1.0 devices (speaker, microphone) and USB MIDI 1.0 controllers. The 16-bit PWM + IC/OC modules can drive an external DAC's I2S clock; the 10-bit ADC handles line-level inputs for monitoring. Many DIY synth and audio-interface designs use the PIC32MX764F128L-V/PF paired with a PCM5102A I2S DAC and a TLV320AIC3254 codec for full-duplex USB audio at 48 kHz.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX764F128L-V/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX764F128L-I/PF | PIC32MX764F128LT-V/PF | PIC32MX675F512L-80V/PF | PIC32MX575F512L-80V/PF | PIC32MX664F128L-V/PF | PIC32MX695F512L-80V/PF |
|---|---|---|---|---|---|---|---|
| Package | 100-TQFP (14x14) | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | MIPS32 M4K, 80 MHz | MIPS32 M4K, 80 MHz | MIPS32 M4K, 80 MHz | MIPS32 M4K, 80 MHz | MIPS32 M4K, 80 MHz | MIPS32 M4K, 80 MHz | MIPS32 M4K, 80 MHz |
| Flash | 128 KB | 128 KB | 128 KB | 512 KB | 512 KB | 128 KB | 512 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 64 KB | 64 KB | 32 KB | 128 KB |
| Ethernet MAC | 10/100 Mbit (MII/RMII) | 10/100 Mbit | 10/100 Mbit | 10/100 Mbit | None | None | 10/100 Mbit |
| USB-OTG | Yes | Yes | Yes | Yes | Yes | No | Yes |
| CAN 2.0b | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Temperature Grade | V: -40C to +105C | I: -40C to +85C | V: -40C to +105C | V: -40C to +105C | V: -40C to +105C | V: -40C to +105C | V: -40C to +105C |
| Price (qty 1, USD approx) | 7.10 | 6.80 | 7.10 | 8.20 | 8.00 | 6.40 | 9.50 |
Key Differentiators
- Only 100-TQFP variant combining 10/100 Ethernet + USB-OTG + CAN (vs PIC32MX664F128L-V/PF)
- Industrial -40C to +105C "V" temperature grade on standard part (vs PIC32MX764F128L-I/PF)
- Balanced 128 KB Flash / 32 KB RAM for typical IoT firmware (vs PIC32MX695F512L-80V/PF)
Design Notes
The PIC32MX764F128L-V/PF requires a clean 2.3-3.6 V supply with separate analog (AVDD/AVSS) pins for the 10-bit ADC. Place a 0.1 uF X7R ceramic plus 10 uF tantalum or ceramic within 5 mm of each VDD/AVDD pin pair, with a ferrite bead (e.g. BLM18PG471SN1) between digital and analog rails to keep ADC noise below 1 LSB. Power-on ramp must be monotonic; use an MCP1700 or equivalent LDO rather than a switching regulator directly on VDD to avoid Ethernet-PHY-induced switching ripple.
The 100-pin TQFP (14x14 mm, 0.5 mm pitch) demands a 4-layer PCB minimum with continuous ground pour underneath the package to keep EMI and thermal performance within spec. Estimated: at 80 MHz full CPU load, internal power dissipation is roughly 130 mW (3.3 V * 40 mA typical); the 14x14 TQFP provides adequate thermal dissipation without a heatsink for industrial applications. Use stitch vias every 5 mm around the perimeter ground pour.
Do not assume the suffix 'V' means 5 V operation - 'V' is the Microchip industrial temperature grade (-40C to +105C), and 'I' is -40C to +85C. Maximum VDD remains 3.6 V absolute-max; exceeding this destroys the part. Also, when migrating between PIC32MX7 and PIC32MX5/6, verify the PMP (Parallel Master Port) pin mapping - some signals are remapped to different ports between sub-families. Lastly, the Ethernet MAC requires an external PHY (e.g. DP83848); there is no integrated PHY in PIC32MX devices.
The 50 MHz EBI / Parallel Master Port signals on this device should be routed with 50 ohm controlled impedance if the bus runs at >40 MHz; otherwise keep the bus under 25 MHz with short traces (<50 mm). The MII Ethernet signals between MAC and PHY must be length-matched within 25 mm to avoid skew at 100 Mbit; series 33 ohm resistors near the MAC pins reduce reflections. USB-OTG D+/D- require 90 ohm differential routing and an ESD array (e.g. USBLC6-2SC6) at the connector.
Compliance Information
RoHS and REACH compliance per Microchip product page https://www.microchip.com/en-us/product/PIC32MX764F128L. Not AEC-Q100 qualified; the part is industrial-grade (-40C to +105C, V suffix), not automotive grade. Lead-free and halogen-free per Microchip material declarations.
