PIC32MX664F128H-V/MR - 32-bit MCU 128KB Flash USB OTG 80MHz
MPN: PIC32MX664F128H-V/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.92 | $8.92 |
| 10 | $8.03 | $80.30 |
| 100 | $7.14 | $714.00 |
| 500 | $6.42 | $3,210.00 |
| 1,000 | $5.71 | $5,710.00 |
PIC32MX664F128H-V/MR Overview
A 32-bit microcontroller (MCU) is a microprocessor core with 32-bit-wide data paths, registers, and ALU, providing significantly higher throughput than 8- or 16-bit architectures for embedded workloads such as protocol stacks, graphics, and DSP-style filtering. PIC32MX MCUs use the MIPS32 M4K core from MIPS Technologies with hardware multiply/divide and a 5-stage pipeline, running at up to 80 MHz (80 MIPS). Within the hierarchy, PIC32MX sits under Microchip's PIC32 family -> 32-bit MCU -> microcontroller -> embedded processor -> semiconductor. They are typically paired with external peripherals such as Ethernet PHYs, USB connectors, and analog front-ends.
Key features of the PIC32MX664F128H include: 128 KB Flash program memory (with ECC option on higher-density variants), 32 KB SRAM, five 16-bit timers/counters, a 16-channel 10-bit ADC at 1 Msps, two comparators, two UARTs, two SPI buses, and two I²C buses. The integrated 10/100 Mbps Ethernet MAC and USB OTG (full-speed + hi-speed PHY interface) make it suitable for connected embedded nodes.
The architecture separates peripheral pin select (PPS) from physical I/O, giving 51 digital I/O lines flexible remapping across most digital peripherals. The DMA controller has 8 channels supporting data movement between peripherals and memory without CPU intervention, enabling efficient USB and ADC pipelines.
Typical applications include industrial automation with Modbus/TCP, USB peripherals (HID, CDC, mass storage), Ethernet-connected sensors, home gateways, and audio processing with I²S codecs. The wide peripheral mix and integrated MAC reduce BOM cost vs. external ENC28J60 + 8-bit MCU designs.
For PCB layout, place the 64-pin VQFN exposed pad soldered to a continuous ground plane for thermal dissipation and low-noise ADC performance. Decouple VDD with a 10 µF bulk + 0.1 µF ceramic per pin pair, and keep the 80 MHz crystal traces short and guarded. Use MPLAB Harmony or legacy MLA stacks for USB and TCP/IP firmware.
This page combines distributor pricing, drop-in alternatives, and engineering notes drawn from the Microchip datasheet family, information not aggregated on any single distributor page.
Drop-in alternatives for PIC32MX664F128H-V/MR — 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 PIC32MX664F128H-V/MR (same form factor and footprint) — differing in ADC, Package, USB, Timers, CAN.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX664F128H-I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX564F128H-V/MR
✅ Drop-In✓ In Stock
$4.32 / Unit
View Datasheet →PIC32MX764F128H-V/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX664F064L-I/PF
✅ Drop-In✓ In Stock
$5.86 / Unit
View Datasheet →PIC32MX564F128H-I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX664F128H-V/MR Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| CPU Speed | 80 MHz (80 MIPS) |
| Program Flash | 128 KB |
| SRAM | 32 KB |
| Package | 64-pin VQFN (9x9 mm) |
| Operating Voltage (VDD) | 2.3 V to 3.6 V |
| Operating Temperature (V grade) | -40C to +105C |
| ADC | 10-bit, up to 16 channels, 1 Msps |
| USB | USB 2.0 OTG full-speed (hi-speed interface) |
| Ethernet | 10/100 Mbps MAC (RMII/MII) |
| CAN | 1 x CAN 2.0B |
| UART | 2 |
| I²C | 2 |
| SPI | 2 |
| I²S | 2 |
| 16-bit Timers | 5 |
| DMA Channels | 8 |
| Digital I/O Pins | 51 |
| Comparators | 2 |
| PMP (Parallel Master Port) | 16-bit |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC32MX664F128H-V/MR Pin Configuration
| Pin 1 | RG15 — General purpose I/O / PMP data |
| Pin 2 | RG13 — General purpose I/O |
| Pin 3 | RG12 — General purpose I/O |
| Pin 4 | RG11 — General purpose I/O |
| Pin 5 | RA10 — Analog / digital I/O |
| Pin 6 | RA9 — Analog / digital I/O |
| Pin 7 | RA8 — Analog / digital I/O |
| Pin 8 | RB15 — Analog / digital I/O / OC program |
| Pin 9 | RB14 — Analog / digital I/O |
| Pin 10 | RB13 — Analog / digital I/O |
| Pin 11 | RB12 — Analog / digital I/O |
| Pin 12 | RB11 — Analog / digital I/O |
| Pin 13 | RB10 — Analog / digital I/O |
| Pin 14 | RB9 — Analog / digital I/O |
| Pin 15 | RB8 — Analog / digital I/O |
| Pin 16 | RB7 — Analog / digital I/O |
| Pin 17 | RB6 — Analog / digital I/O |
| Pin 18 | RB5 — Analog / digital I/O |
| Pin 19 | RB4 — Analog / digital I/O |
| Pin 20 | RB3 — Analog / digital I/O |
| Pin 21 | RB2 — Analog / digital I/O |
| Pin 22 | RB1 — Analog / digital I/O / PGEC1 |
| Pin 23 | RB0 — Analog / digital I/O / PGED1 |
| Pin 24 | RA7 — Analog / digital I/O |
| Pin 25 | RA6 — Analog / digital I/O |
| Pin 26 | VDD — Supply voltage 2.3-3.6 V |
| Pin 27 | VSS — Ground reference |
| Pin 28 | RA5 — Analog / digital I/O |
| Pin 29 | RA4 — Analog / digital I/O |
| Pin 30 | RA3 — Analog / digital I/O |
| Pin 31 | RA2 — Analog / digital I/O |
| Pin 32 | RA1 — Analog / digital I/O |
| Pin 33 | RA0 — Analog / digital I/O |
| Pin 34 | VSS — Ground reference |
| Pin 35 | VDD — Supply voltage 2.3-3.6 V |
| Pin 36 | RC15 — General purpose I/O |
| Pin 37 | RC14 — General purpose I/O |
| Pin 38 | RC13 — General purpose I/O |
| Pin 39 | RC12 — General purpose I/O |
| Pin 40 | RC11 — General purpose I/O |
| Pin 41 | RC10 — General purpose I/O |
| Pin 42 | RC9 — General purpose I/O |
| Pin 43 | RC8 — General purpose I/O |
| Pin 44 | RC7 — General purpose I/O |
| Pin 45 | RC6 — General purpose I/O |
| Pin 46 | RC5 — General purpose I/O |
| Pin 47 | RC4 — General purpose I/O |
| Pin 48 | RC3 — General purpose I/O |
| Pin 49 | RC2 — General purpose I/O |
| Pin 50 | RC1 — General purpose I/O |
| Pin 51 | RC0 — General purpose I/O |
| Pin 52 | RD8 — General purpose I/O |
| Pin 53 | RD9 — General purpose I/O |
| Pin 54 | RD10 — General purpose I/O |
| Pin 55 | RD11 — General purpose I/O |
| Pin 56 | RD12 — General purpose I/O |
| Pin 57 | RD13 — General purpose I/O |
| Pin 58 | RD14 — General purpose I/O |
| Pin 59 | RD15 — General purpose I/O |
| Pin 60 | RF5 — General purpose I/O |
| Pin 61 | RF4 — General purpose I/O |
| Pin 62 | OSC1 — Crystal oscillator input |
| Pin 63 | OSC2 — Crystal oscillator output |
| Pin 64 | RG14 — General purpose I/O |
Typical Applications
PIC32MX664F128H-V/MR is suitable for 7 applications: Industrial Ethernet Sensor Gateway, USB HID Peripheral / Data Logger, CAN-Based Automotive Body Module, I²S Audio Streaming / USB Headset, Smart Home / IoT Edge Node, HMI Touch / Display Controller, Industrial UART / RS-485 Bridge.
Industrial Ethernet Sensor Gateway
The PIC32MX664F128H-V/MR's integrated 10/100 Ethernet MAC and 32 KB SRAM support Modbus/TCP and HTTP servers for industrial sensor gateways. The 80 MHz MIPS core runs lwIP TCP/IP stacks without external memory, and the 16 ADC channels digitize analog sensors directly. Paired with an external KSZ8041 PHY and RJ45 jack, the design eliminates separate Ethernet controller ICs. The -40C to +105C V-grade ensures reliable operation in factory floor environments with temperature swings.
Recommended
USB HID Peripheral / Data Logger
The integrated USB 2.0 OTG controller with on-chip transceivers and DMA enables USB HID, CDC, and mass-storage peripherals without external interface ICs. The 128 KB Flash accommodates USB class driver stacks, while 32 KB SRAM handles bulk endpoint buffering. At 80 MHz, the MCU streams USB Full-Speed (12 Mbps) data without DMA starvation. Common uses: barcode scanner, USB temperature logger, and HID gaming peripherals.
Recommended
CAN-Based Automotive Body Module
The integrated CAN 2.0B controller and -40C to +105C V-grade temperature range suit automotive body-control modules for door, seat, and lighting subsystems. The 32-bit core processes CAN message arbitration and firmware logic in real time at 80 MIPS. Although not AEC-Q100 qualified, the V-grade operating range is well-suited for cabin electronics. The 51 GPIO pins interface with LEDs, switches, and motor drivers across the body module network.
Recommended
I²S Audio Streaming / USB Headset
The two I²S modules and USB OTG controller support USB audio class 1.0 headsets and digital audio streaming peripherals. The 80 MHz MIPS throughput handles 16-bit / 48 kHz stereo audio with low CPU overhead (<10% utilization), leaving cycles for DSP-style filtering and mixer functions. The DMA controller streams I²S data to/from SRAM without CPU intervention. Common designs: USB DAC, headset adapter, and digital microphone interface.
Recommended
Smart Home / IoT Edge Node
The integrated Ethernet MAC and USB OTG provide IP-connectivity options for IoT edge nodes aggregating sensor data in home automation hubs. The 32 KB SRAM supports TLS connection buffers for secure MQTT or HTTP clients. The 80 MHz core runs light TLS 1.2 stacks, while the 16 ADC channels digitize analog sensors (temperature, light, humidity). Low-cost BOM and PIC32 ecosystem maturity suit consumer-grade smart home products.
Recommended
HMI Touch / Display Controller
The PMP (Parallel Master Port) and 51 GPIO drive character LCDs, TFT displays with integrated controllers, and resistive touchscreens for HMIs. At 80 MHz, the core refreshes QVGA displays and handles touch input with sub-100 ms latency. Combined with 128 KB Flash and 32 KB SRAM, the MCU drives mid-range industrial HMIs without external graphics controllers. Common designs: appliance control panels, access-control keypads, and instrumentation front panels.
Recommended
Industrial UART / RS-485 Bridge
The two UARTs and CAN module support industrial UART bridges and RS-485 / Modbus RTU slaves for SCADA systems. The PIC32MX664F128H-V/MR serves as a bridge between legacy RS-485 sensors and an Ethernet SCADA host, translating Modbus RTU to Modbus/TCP. The DMA controller handles high-speed UART traffic without CPU overhead, and the 16 ADC channels support local analog sensor aggregation. Industrial V-grade ensures reliable factory-floor operation.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX664F128H-V/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX664F128H-I/MR | PIC32MX564F128H-V/MR | PIC32MX764F128H-V/MR | PIC32MX664F064L | PIC32MX564F128H-I/MR |
|---|---|---|---|---|---|---|
| Package | VQFN-64 (MR, 9x9 mm) | VQFN-64 (MR, 9x9 mm) - same | VQFN-64 (MR, 9x9 mm) - same | VQFN-64 (MR, 9x9 mm) - same | VQFN-64 (MR, 9x9 mm) - same | VQFN-64 (MR, 9x9 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU 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 |
| Flash | 128 KB | 128 KB | 128 KB | 128 KB | 64 KB (-50%) | 128 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB (-50%) | 32 KB |
| USB | USB 2.0 OTG Full-Speed | USB 2.0 OTG Full-Speed | USB Full-Speed only (no OTG) | USB 2.0 Hi-Speed (480 Mbps) | USB 2.0 OTG Full-Speed | USB Full-Speed only (no OTG) |
| Ethernet MAC | 10/100 Mbps integrated | 10/100 Mbps integrated | None | 10/100 Mbps integrated | 10/100 Mbps integrated | None |
| CAN 2.0B | 1 module | 1 module | 1 module | 2 modules | 1 module | 1 module |
| Operating Temperature | -40C to +105C (V grade) | -40C to +85C (I grade) | -40C to +105C (V grade) | -40C to +105C (V grade) | -40C to +105C (V grade) | -40C to +85C (I grade) |
Key Differentiators
- Integrated 10/100 Ethernet MAC plus USB OTG in a single 32-bit MCU (vs PIC32MX564F128H-V/MR)
- V-grade -40C to +105C industrial temperature range (vs PIC32MX664F128H-I/MR)
- 8-channel DMA for offloaded USB and ADC streaming (vs PIC32MX664F064L)
Design Notes
The PIC32MX664F128H-V/MR requires 2.3 V to 3.6 V on VDD. Per the datasheet, place a 10 µF bulk tantalum/ceramic capacitor near each VDD pin and a 0.1 µF ceramic decoupling capacitor as close as possible to each VDD/VSS pair. The USB transceiver requires a regulated 3.3 V rail with <50 mV peak-to-peak noise. Add a ferrite bead between the 3.3 V regulator and the USB VBUS pin to suppress switching regulator noise during USB Full-Speed enumeration.
The 64-pin VQFN package has an exposed thermal pad (EP) that must be soldered to a continuous ground copper plane for thermal dissipation. The datasheet specifies thermal resistance theta_JA around 28 C/W with proper EP soldering, allowing up to 1.8 W dissipation at industrial temperatures. Without EP soldering, junction temperature can rise above 100C under full USB + Ethernet + ADC load. Use 4-6 thermal vias (0.3 mm drill) under the EP to inner ground planes for best heat transfer.
Route the 80 MHz crystal traces (OSC1/OSC2) as short, matched-length traces guarded by ground pour on both sides. Keep USB D+/D- traces 90 ohm differential impedance matched and length-matched within 2 mm. Route RMII Ethernet traces (REF_CLK, RXD0/1, RX_ER, CRS_DV, TX_EN, TXD0/1) length-matched to <2.5 cm total length. Per Microchip's PIC32MX hardware design guide, isolate analog ADC traces (AN0-AN15) from digital switching signals by at least 3x trace width or use a ground guard trace.
Common pitfalls when designing with the PIC32MX664F128H-V/MR include: (1) forgetting to configure the JTAG/Trace pins (TMS, TCK, TDI, TDO) as analog or disabled to free them as GPIO; (2) not connecting the USB D+ pull-up to indicate Full-Speed to the host (use a software-tunable pull-up on D+ via I/O pin); (3) failing to configure the MCLR reset pin with a 10 kohm pull-up and 100 nF cap for proper POR; (4) using the Ethernet MAC without an external PHY clock or proper RMII strap configuration. Always consult Microchip's errata sheet DS80000480 for known silicon revisions.
Compliance Information
RoHS compliant per Microchip product page. V-grade operating temperature -40C to +105C is suitable for industrial but not AEC-Q100 automotive qualification - consider PIC32MX664F128HT-I/MR for automotive applications.
