PIC32MX664F064L-I/PF - 32-bit 80MHz MCU 64KB Flash USB Ethernet 100-TQFP | Microchip
MPN: PIC32MX664F064L-I/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.2 | $9.20 |
| 10 | $8.27 | $82.70 |
| 100 | $7.34 | $734.00 |
| 500 | $6.61 | $3,305.00 |
| 1,000 | $5.86 | $5,860.00 |
PIC32MX664F064L-I/PF Overview
A PIC32MX microcontroller is a 32-bit MIPS-based MCU from Microchip that combines the performance of a M4K core with rich connectivity peripherals such as USB, CAN, and Ethernet. It sits in the broader taxonomy of 32-bit microcontrollers -> MIPS architecture -> embedded connectivity MCU -> PIC32 family. Compared with 8-bit PIC16/PIC18 MCUs, the PIC32MX offers 5-stage pipelined execution, up to 105 DMIPS, and MIPS16e compressed-code mode for roughly 40 percent code-size reduction, while retaining Microchip's MPLAB X IDE and Harmony ecosystem.
Key features include 64 KB Flash program memory, 32 KB SRAM, 53 digital I/O pins, four dedicated DMA channels, USB 2.0 OTG with integrated PHY, 10/100 Mbps Ethernet MAC with MII/RMII, two I2C, two SPI, two UART, five 16-bit timers, five input-capture and five output-compare modules, a 10-bit 1 Msps ADC with 16 channels, and a parallel master port. The Harvard architecture and 5-stage pipeline enable deterministic 80 MHz operation while maintaining low power consumption.
Architecturally the device uses a Harvard bus with separate 32-bit instruction and 32-bit data paths to the Flash and SRAM, accelerated by a prefetch cache and a 5-stage pipeline. The integrated 10/100 MAC and USB OTG PHY eliminate external transceivers, shrinking BOM and PCB area; the four dedicated DMA channels offload USB and Ethernet traffic from the CPU, leaving headroom for application code. JTAG and 2-wire trace debugging are supported through dedicated pins.
Typical applications include industrial Ethernet gateways, USB device/host controllers, M2M communication modules, embedded web servers, and CAN-bridge data loggers. The wide peripheral set also suits medical monitoring, building automation controllers, and graphical HMI front-ends when paired with an external LCD controller.
When designing with this part, allocate the 100-TQFP 14x14 mm footprint with adequate copper for thermal relief, and follow Microchip's PIC32MX5/6/7 hardware checklist for decoupling, crystal layout, and 3.3 V rail sequencing. Watch the AVDD/VREF+ supply for ADC noise and the VBUS pin for OTG supply switching.
This page synthesizes distributor pricing, pin-compatible alternatives from the same PIC32MX family, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC32MX664F064L-I/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 PIC32MX664F064L-I/PF (same form factor and footprint) — differing in ADC, Package, Operating Temperature, USB, DMA Channels.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX564F064L-I/PF
✅ Drop-In✓ In Stock
$4.83 / Unit
View Datasheet →PIC32MX564F064LT-I/PF
✅ Drop-In✓ In Stock
$5.8 / Unit
View Datasheet →PIC32MX534F064L-I/PF
✅ Drop-In✓ In Stock
$4.2 / Unit
View Datasheet →PIC32MX430F064L-I/PT
✅ Drop-In✓ In Stock
$3.45 / Unit
View Datasheet →PIC32MX575F512L-80I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX350F128L-V/PF
✅ Drop-In✓ In Stock
$4.15 / Unit
View Datasheet →PIC32MX270F512L-V/PF
✅ Drop-In✓ In Stock
$5.1 / Unit
View Datasheet →PIC32MX664F064L-I/PF Maximum Ratings & Electrical Characteristics
| Core | MIPS32 M4K (32-bit, 5-stage pipeline) |
| Max CPU Speed | 80 MHz / 105 DMIPS |
| Program Memory (Flash) | 64 KB (64K x 8) |
| Data Memory (SRAM) | 32 KB (32K x 8) |
| Operating Voltage | 2.3 V to 3.6 V |
| I/O Pins | 53 |
| DMA Channels | 4 (dedicated) |
| USB | USB 2.0 Full-Speed OTG with integrated PHY |
| Ethernet | 10/100 Mbps MAC with MII/RMII |
| CAN | 1 module |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| Timers | 5 x 16-bit |
| Input Capture / Output Compare | 5 / 5 |
| ADC | 10-bit, 1 Msps, 16 channels |
| Package | 100-TQFP (14x14 mm), industrial -40C to +85C |
| RoHS Status | Compliant |
| Code Compression | MIPS16e mode (~40% smaller code) |
| Debug Interface | JTAG / 2-wire trace |
PIC32MX664F064L-I/PF 100-tqfp (14x14 mm), industrial -40c to +85c Pin Configuration Guide
Pin configuration for PIC32MX664F064L-I/PF (100-tqfp (14x14 mm), industrial -40c to +85c 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 PIC32MX664F064L-I/PF.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MX664F064L-I/PF is suitable for 7 applications: Industrial Ethernet Gateway, USB Device / Host Controller, M2M Communication Module, Embedded Web Server / HMI Controller, CAN-Bridge Data Logger, Medical Monitoring / Building Automation Controller, Graphical LCD Front-End.
Industrial Ethernet Gateway
The PIC32MX664F064L-I/PF is well matched to industrial Ethernet gateways because it integrates a 10/100 Mbps MAC with MII/RMII plus a USB 2.0 OTG controller in a single chip, eliminating external transceivers and shrinking the BOM. The 80 MHz MIPS M4K core delivers 105 DMIPS, leaving headroom for TCP/IP stacks, Modbus/TCP, and PROFINET or EtherNet/IP application layers. Four dedicated DMA channels keep packet movement off the CPU, allowing deterministic response even under sustained traffic. Place the 100-TQFP on a 4-layer board with a 25 MHz Ethernet PHY crystal, follow Microchip's MII/RMII routing guidance, and add a 3.3 V LDO with at least 100 mA headroom for hot-plug events.
Recommended
USB Device / Host Controller
For USB device, host, or On-The-Go applications the PIC32MX664F064L-I/PF provides a Full-Speed USB 2.0 OTG controller with integrated PHY, removing the need for an external transceiver and reducing PCB area. The 64 KB Flash and 32 KB RAM fit CDC, HID, MSD, and basic vendor class stacks, while the four DMA channels sustain bulk transfers without dropping packets. Designers benefit from 53 GPIOs for status LEDs, buttons, and auxiliary UART peripherals. Reference Microchip's USB stack and follow VBUS protection guidance, including a 5 V regulator tolerant of USB suspend currents.
Recommended
M2M Communication Module
Machine-to-machine communication modules rely on the PIC32MX664F064L-I/PF's combination of Ethernet, USB, CAN, and dual UART/SPI/I2C to bridge fieldbus, cellular, and IP networks. The 80 MHz core runs lwIP or a lightweight TLS stack while the CAN peripheral handles CANopen or J1939 messages concurrently. Industrial -40C to +85C operation lets the module survive outdoor cabinets, and 53 I/O pins serve sensor interfaces and indicator LEDs. Add a 4-kbit EEPROM for parameter storage and a watchdog supervisor; route the 8 MHz crystal close to the OSCI pins per Microchip's hardware checklist.
Recommended
Embedded Web Server / HMI Controller
The PIC32MX664F064L-I/PF drives small embedded web servers and HMI controllers by combining the on-chip 10/100 MAC, 32 KB SRAM, and 5-stage pipeline into a single low-cost part. The integrated ADC, PWM, and timers handle local sensing and backlight control, while the parallel master port can drive an external LCD controller. The MIPS16e code-compression mode fits HTTP, XML, and JSON parsers into the 64 KB Flash budget. Designers can add a small SPI Flash for asset pages and a 3.3 V buck converter sized for 200 mA peaks during Ethernet traffic.
Recommended
CAN-Bridge Data Logger
For CAN-bridge data loggers, the PIC32MX664F064L-I/PF acts as both a CAN node and an Ethernet gateway, logging vehicle or industrial CAN traffic to internal Flash or to a USB mass-storage device. The on-chip USB OTG supports MSD class with the Microchip file system library, while the Ethernet MAC streams buffered records to a central server. The 5-stage pipeline and dedicated DMA prevent dropped frames at 1 Mbps CAN rates. Use a CAN transceiver such as the MCP2551, isolate the bus with a digital isolator, and add a battery-backed RTC for timestamping.
Recommended
Medical Monitoring / Building Automation Controller
In medical monitors and building automation controllers, the PIC32MX664F064L-I/PF combines 53 GPIOs, a 10-bit 1 Msps ADC with 16 channels, and dual I2C/SPI buses for sensor fusion and actuator control. The Ethernet MAC links the device to hospital networks or building management systems, while the USB OTG port supports local configuration during installation. With MIPS16e code compression, the 64 KB Flash fits Modbus, BACnet, or a lightweight MQTT client. Add a medical-grade isolation barrier, an EMC-compliant power supply, and a watchdog supervisor for safety-critical operation.
Recommended
Graphical LCD Front-End
The PIC32MX664F064L-I/PF drives small graphical LCD front-ends via the parallel master port, while its USB OTG enables touch-panel calibration firmware to be uploaded in production. The 80 MHz core refreshes QVGA panels smoothly when paired with an external controller such as SSD1963, and the 32 KB SRAM double-buffers simple menus. Five PWM channels drive backlight dimming and key-beep tones. Watch the parallel master port pin count against the 100-TQFP budget, and route the digital section away from the ADC reference for clean sensor readings.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX664F064L-I/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX564F064L-I/PF | PIC32MX534F064L-I/PF | PIC32MX575F512L-80I/PF | PIC32MX430F064L-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TQFP (14x14 mm) | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (14x14 mm) - same | 100-TQFP (12x12 mm) - same family, smaller body |
| Core / Architecture | MIPS32 M4K, 5-stage | MIPS32 M4K, 5-stage | MIPS32 M4K, 5-stage | MIPS32 M4K, 5-stage | MIPS32 M4K, 5-stage |
| Max CPU Speed | 80 MHz / 105 DMIPS | 80 MHz / 105 DMIPS | 40 MHz / 52 DMIPS | 80 MHz / 105 DMIPS | 80 MHz / 105 DMIPS |
| Flash / RAM | 64 KB / 32 KB | 64 KB / 32 KB | 64 KB / 32 KB | 512 KB / 64 KB | 64 KB / 32 KB |
| USB 2.0 OTG | Yes (integrated PHY) | No (removed) | Yes | Yes | Yes |
| 10/100 Ethernet MAC | Yes (MII/RMII) | Yes | Yes | Yes | No (removed) |
| CAN | 1 module | 1 module | 1 module | 1 module | 1 module |
| DMA Channels | 4 dedicated | 4 dedicated | 4 dedicated | 4 dedicated | 4 dedicated |
| I/O Pins | 53 | 53 | 53 | 53 | 83 |
| Operating Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V |
| Approx. Unit Price (qty 100) | $7.34 | $7.10 | $6.95 | $11.40 | $6.80 |
Key Differentiators
- Same-family upgrade with 8x more Flash and 2x more RAM (vs PIC32MX575F512L-80I/PF)
- Lower-power variant on the same 100-TQFP footprint (vs PIC32MX534F064L-I/PF)
- Pin-compatible USB-less option (vs PIC32MX564F064L-I/PF)
- Smaller-package variant with extra GPIOs (vs PIC32MX430F064L-I/PT)
- Newer-family larger-Flash pin-compatible upgrade (vs PIC32MX270F512L-V/PF)
Design Notes
The PIC32MX664F064L-I/PF requires a clean 3.3 V rail with bulk decoupling of at least 10 uF tantalum plus 0.1 uF ceramic on each VDD pin pair. Place the bulk capacitor within 10 mm of the MCU and route it directly to the ground plane; avoid vias in the high-current return path. The AVDD/VREF+ pins need a separate low-noise LDO such as MCP1700-3302E to avoid ADC reference drift. Add a ferrite bead between VDD and AVDD rails to suppress digital switching noise.
Route the 8 MHz crystal traces symmetrically and within 5 mm of the OSCI/OSCO pins, guarded by a ground pour and away from switching lines. For 100-Mbps Ethernet, the MII/RMII traces to the external PHY must be length-matched within 50 mils and impedance-controlled to 50 ohms single-ended. Place the PHY within 50 mm of the MCU and provide a clean dedicated analog supply. Keep JTAG/TRACE signals away from USB D+/D- lines to avoid crosstalk during in-circuit programming.
At full 80 MHz operation with all peripherals active, the PIC32MX664F064L-I/PF dissipates roughly 200 mW internally, so the 100-TQFP package easily stays within the -40C to +85C industrial range on a 4-layer board. Ensure at least four thermal vias under the exposed thermal pad and stitch ground pours on both sides for a theta_JA near 50 C/W. Designers targeting extended temperature should add copper pours on the top layer and avoid plastic housings that trap heat.
Do not float the ENVREG pin - tie it to VDD via a 10 kohm resistor to enable the internal 2.5 V core regulator, otherwise the part will appear dead. The VBUS pin must be tolerant of 5 V when used for OTG, so add a series resistor and TVS diode. Always read the silicon errata for the PIC32MX5/6/7 family - some revisions have USB resume-timing and DMA descriptor bugs that require firmware workarounds. Estimated: at 80 MHz with 53 GPIOs toggling at 10 MHz, peak IO current is around 40 mA.
For USB Full-Speed, the D+/D- traces must be 90 ohms differential, length-matched within 2 mm, and routed over a continuous ground plane. Add a common-mode choke and ESD array (e.g. USBLC6-2SC6) close to the connector. For Ethernet RMII, the 50 MHz reference clock must be routed with controlled impedance and terminated to suppress reflections. Series-damp 33 ohm resistors on MII signals reduce overshoot when the PHY is placed more than 25 mm away.
Compliance Information
Industrial -40C to +85C; not AEC-Q100 qualified. RoHS and REACH compliant per Microchip product page; lead-free reflow compatible. Conflict-minerals statement available on Microchip's corporate-responsibility page.
