PIC32MX320F064HT-80V/MR - 32-bit MCU 64KB Flash 80MHz | Microchip
MPN: PIC32MX320F064HT-80V/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.8 | $6.80 |
| 10 | $6.12 | $61.20 |
| 100 | $5.45 | $545.00 |
| 500 | $4.89 | $2,445.00 |
| 1,000 | $4.35 | $4,350.00 |
PIC32MX320F064HT-80V/MR Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O into one device. The PIC32MX family occupies the 32-bit performance tier of Microchip's PIC portfolio, positioned between the 8-bit PIC16/PIC18 line and the higher-end 32-bit PIC32MZ series, and typically used in embedded control, USB device, and graphics applications that exceed 8-bit capability but do not require DSP extensions.
Key features include a MIPS32 M4K 32-bit core with 5-stage pipeline, 80 MHz maximum operating frequency yielding 1.56 DMIPS/MHz performance, 64KB Flash with self-programming support, 16KB SRAM, a 10-bit 1 MSPS analog-to-digital converter with up to 16 channels, USB 2.0 full-speed device/host/OTG controller, two I2C, two SPI, and two UART modules, plus a Parallel Master Port for external memory or graphics interfaces.
The architecture uses a 5-stage pipeline with separate instruction and data Flash buses to deliver 1.56 DMIPS/MHz, enabling deterministic interrupt response for real-time control loops. The integrated USB 2.0 full-speed On-The-Go controller supports both device and host roles without an external PHY, while the Peripheral Pin Select (PPS) remapping allows flexible assignment of digital peripherals to physical I/O pins.
Typical applications include industrial control and HMI panels, USB peripherals such as barcode scanners and HID devices, embedded data acquisition systems, low-cost graphics terminals driving TFT LCDs, and consumer electronics requiring 32-bit performance with low BOM cost.
Designers should note that the '80V' suffix indicates the 80 MHz speed grade with V temperature range (-40C to +105C), and the 'T' suffix denotes Tape and Reel packaging. The MR suffix indicates the 64-pin VQFN package, while the parallel PIC32MX320F064H-80V/MR ships in tray packaging. The MR package requires careful thermal pad soldering and 0.5 mm pad pitch layout discipline.
This page synthesizes distributor pricing, drop-in same-package alternatives, and design notes drawn from the PIC32MX3XX/4XX family datasheet - information not consolidated on any single distributor or manufacturer page.
Drop-in alternatives for PIC32MX320F064HT-80V/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 PIC32MX320F064HT-80V/MR (same form factor and footprint) — differing in Package, ADC, Core Architecture, DMA Channels, Communication Interfaces.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX320F064HT-80I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX320F064H-80I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX320F064H-40I/MR
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX320F064HT-40I/MR
✅ Drop-In✓ In Stock
$3.79 / Unit
View Datasheet →PIC32MX230F128H-50I/MR
✅ Drop-In✓ In Stock
$3.28 / Unit
View Datasheet →PIC32MX150F256H-50I/MR
✅ Drop-In✓ In Stock
$3.05 / Unit
View Datasheet →PIC32MX320F064HT-80V/MR Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K |
| Data Bus Width | 32-bit |
| Maximum Clock Frequency | 80 MHz |
| Program Memory Size | 64 KB Flash |
| RAM Size | 16 KB SRAM |
| Supply Voltage Range | 2.3 V to 3.6 V |
| ADC Resolution | 10-bit, 1 MSPS |
| ADC Channels | Up to 16 |
| USB Interface | USB 2.0 Full-Speed OTG |
| I/O Count | 53 (typical for MR package) |
| Communication Interfaces | 2x I2C, 2x SPI, 2x UART, USB |
| Package | 64-pin VQFN (9x9 mm) with exposed pad |
| Operating Temperature Range | -40 C to +105 C (V grade) |
| DMA Channels | Yes (integrated) |
| Mounting Type | Surface Mount |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Speed Grade | 80 MHz |
| Memory Type | FLASH |
| Peripheral Pin Select | Yes (PPS) |
| Parallel Master Port | Yes |
| AEC-Q100 Qualification | Not qualified |
PIC32MX320F064HT-80V/MR Pin Configuration
| Pin 1 | RP15/PMA0/PMD0/AN15/RB15 — Remappable peripheral / Parallel Master Port data bit 0 / ADC input |
| Pin 2 | RP14/PMA1/PMD1/AN14/RB14 — Remappable peripheral / PMP data bit 1 / ADC input |
| Pin 3 | RP13/PMD2/AN13/RB13 — Remappable peripheral / PMP data bit 2 / ADC input |
| Pin 4 | RP12/PMD3/AN12/RB12 — Remappable peripheral / PMP data bit 3 / ADC input |
| Pin 5 | VDD — Positive supply voltage (2.3V-3.6V) |
| Pin 6 | RP11/PMD4/AN11/RB11 — Remappable peripheral / PMP data bit 4 / ADC input |
| Pin 7 | RP10/PMD5/AN10/RB10 — Remappable peripheral / PMP data bit 5 / ADC input |
| Pin 8 | RP9/PMD6/AN9/RB9 — Remappable peripheral / PMP data bit 6 / ADC input |
| Pin 9 | RP8/PMD7/AN8/RB8 — Remappable peripheral / PMP data bit 7 / ADC input |
| Pin 10 | VSS — Ground reference |
| Pin 11 | OSC1/RC12 — External oscillator input or general I/O |
| Pin 12 | OSC2/RC15 — External oscillator output or general I/O |
| Pin 13 | SOSCO/RPC13 — Secondary oscillator output |
| Pin 14 | SOSCI/RPC14 — Secondary oscillator input |
| Pin 15 | PGED1/AN0/VREF+/CVREF+/RP0/RB0 — Programming data / ADC reference plus / Remappable peripheral |
| Pin 16 | PGEC1/AN1/VREF-/CVREF-/RP1/RB1 — Programming clock / ADC reference minus / Remappable peripheral |
| Pin 17 | AN2/C2IN-/RP2/RB2 — ADC input / Comparator 2 input / Remappable peripheral |
| Pin 18 | AN3/C2IN+/RP3/RB3 — ADC input / Comparator 2 input / Remappable peripheral |
| Pin 19 | AN4/C1IN-/RP4/RB4 — ADC input / Comparator 1 input / Remappable peripheral |
| Pin 20 | AN5/C1IN+/RP5/RB5 — ADC input / Comparator 1 input / Remappable peripheral |
| Pin 21 | VSS — Ground reference |
| Pin 22 | VDD — Positive supply voltage (2.3V-3.6V) |
| Pin 23 | AN6/RP6/RB6 — ADC input / Remappable peripheral |
| Pin 24 | AN7/RP7/RB7 — ADC input / Remappable peripheral |
| Pin 25 | VSS — Ground reference |
| Pin 26 | VDD — Positive supply voltage (2.3V-3.6V) |
| Pin 27 | RPD0/INT0/RD0 — External interrupt 0 / Port D I/O |
| Pin 28 | RPD1/INT1/RD1 — External interrupt 1 / Port D I/O |
| Pin 29 | RPD2/INT2/RD2 — External interrupt 2 / Port D I/O |
| Pin 30 | RPD3/INT3/RD3 — External interrupt 3 / Port D I/O |
| Pin 31 | RPD4/SDO1/RD4 — SPI1 data out / Port D I/O |
| Pin 32 | RPD5/SDI1/RD5 — SPI1 data in / Port D I/O |
| Pin 33 | RPD6/SCK1/RD6 — SPI1 clock / Port D I/O |
| Pin 34 | RPD7/SS1/RD7 — SPI1 slave select / Port D I/O |
| Pin 35 | VSS — Ground reference |
| Pin 36 | VDD — Positive supply voltage (2.3V-3.6V) |
| Pin 37 | RC1/T1CK/RC1 — Timer1 clock / Port C I/O |
| Pin 38 | RC2/OC1/RC2 — Output compare 1 / Port C I/O |
| Pin 39 | RC3/OC2/RC3 — Output compare 2 / Port C I/O |
| Pin 40 | RC4/OC3/RC4 — Output compare 3 / Port C I/O |
| Pin 41 | VDD — Positive supply voltage (2.3V-3.6V) |
| Pin 42 | VSS — Ground reference |
| Pin 43 | SDA1/RA14 — I2C1 data / Port A I/O |
| Pin 44 | SCL1/RA15 — I2C1 clock / Port A I/O |
| Pin 45 | D+/RG2 — USB D+ data line |
| Pin 46 | D-/RG3 — USB D- data line |
| Pin 47 | VUSB — USB transceiver supply (3.3V) |
| Pin 48 | VSS — Ground reference |
| Pin 49 | RF6/USBID/RF6 — USB OTG ID / Port F I/O |
| Pin 50 | RF5/CVREFOUT/RF5 — Comparator voltage reference out / Port F I/O |
| Pin 51 | RF4/SDA2/RF4 — I2C2 data / Port F I/O |
| Pin 52 | RF3/SCL2/RF3 — I2C2 clock / Port F I/O |
| Pin 53 | RF2/SDO2/RF2 — SPI2 data out / Port F I/O |
| Pin 54 | RF1/SDI2/RF1 — SPI2 data in / Port F I/O |
| Pin 55 | RF0/SCK2/RF0 — SPI2 clock / Port F I/O |
| Pin 56 | RG15/SS2/RG15 — SPI2 slave select / Port G I/O |
| Pin 57 | RG14/SS1/RG14 — SPI1 slave select alternate / Port G I/O |
| Pin 58 | TRCLK/RG13 — Trace clock / Port G I/O |
| Pin 59 | TRD0/RG12 — Trace data 0 / Port G I/O |
| Pin 60 | TRD1/RG11 — Trace data 1 / Port G I/O |
| Pin 61 | MCLR — Master clear reset input (active low) |
| Pin 62 | PGED3/EMUD3/RF7 — Programming data 3 / Port F I/O |
| Pin 63 | PGEC3/EMUC3/RG1 — Programming clock 3 / Port G I/O |
| Pin 64 | ENVREG/RG0 — Voltage regulator enable / Port G I/O |
| Pin EP | EPAD — Exposed thermal pad - connect to ground |
Typical Applications
PIC32MX320F064HT-80V/MR is suitable for 6 applications: USB Human Interface Device (HID) Peripherals, Industrial HMI and Operator Panels, Embedded Data Acquisition Systems, Low-Cost Graphics Terminals, Consumer Electronics Controllers, Educational and Hobby Development Boards.
USB Human Interface Device (HID) Peripherals
The PIC32MX320F064HT-80V/MR fits USB HID peripherals because of its integrated USB 2.0 Full-Speed OTG controller and 80 MHz MIPS32 M4K core delivering 1.56 DMIPS/MHz for responsive HID polling. The on-chip USB controller handles device, host, and OTG roles without an external PHY, reducing BOM cost by approximately $1-2 versus external USB interface ICs. Typical use cases include USB barcode scanners, programmable keypads, gaming controllers, and industrial input devices where 64 KB Flash accommodates USB stack plus application code, while 16 KB SRAM holds HID report buffers and protocol state machines.
Recommended
Industrial HMI and Operator Panels
The PIC32MX320F064HT-80V/MR suits cost-sensitive HMI panels requiring a 32-bit core, integrated USB for touch controller data, and the Parallel Master Port for direct connection to character or small TFT LCDs. The 80 MHz core delivers sufficient throughput to drive 320x240 QVGA displays at 30 fps refresh rates while servicing button scans and serial communications. The 16-channel 10-bit ADC reads analog inputs from potentiometers, thermistors, and 4-20 mA loop sensors in industrial control applications where the -40C to +105C extended temperature range ensures reliable operation in factory environments.
Recommended
Embedded Data Acquisition Systems
The PIC32MX320F064HT-80V/MR is well-suited to multi-channel data acquisition systems thanks to its 16-channel 10-bit 1 MSPS ADC, integrated DMA controller, and 80 MHz processing headroom for real-time averaging, FFT, and threshold detection. The DMA engine transfers ADC results to RAM without CPU intervention, allowing sustained 1 MSPS sampling across multiple channels. The 16 KB SRAM is sufficient for circular acquisition buffers at typical sampling rates, while 64 KB Flash accommodates firmware with calibration tables and protocol stacks for Modbus, CAN, or Ethernet connectivity through external transceivers.
Recommended
Low-Cost Graphics Terminals
The PIC32MX320F064HT-80V/MR drives small TFT LCD panels via its Parallel Master Port (PMP), which supports 8-bit or 16-bit data widths and dedicated control signals for STN, TFT, and OLED displays. The 80 MHz core provides enough bandwidth for 320x240 QVGA displays at acceptable refresh rates when using the PMP DMA mode, while Peripheral Pin Select (PPS) allows flexible routing of display control signals. Designers benefit from the integrated USB for firmware updates and the 64 KB Flash which accommodates basic graphics libraries, fonts, and UI assets without external memory.
Recommended
Consumer Electronics Controllers
The PIC32MX320F064HT-80V/MR fits consumer electronics controllers such as smart home hubs, audio peripherals, and appliance controls because of its USB connectivity, ADC for sensor inputs, and competitive pricing around $3.50-$6.80 depending on quantity. The integrated peripherals (2x I2C, 2x SPI, 2x UART) connect directly to sensors, EEPROMs, Bluetooth/WiFi modules, and display drivers without external logic. The 64 KB Flash supports small RTOS implementations or bare-metal firmware for appliance control, while the 9x9 mm VQFN keeps board footprint compact for space-constrained consumer products.
Recommended
Educational and Hobby Development Boards
The PIC32MX320F064HT-80V/MR appears on Microchip's PIC32MX starter kits and third-party educational boards because of its mature toolchain (MPLAB X IDE, XC32 compiler, Harmony framework) and rich peripheral set. The 80 MHz performance teaches students 32-bit embedded concepts without overwhelming complexity, while 64 KB Flash accommodates full USB stacks and graphics demos used in coursework. Hobbyists benefit from the wide community documentation, free Microchip samples, and the ability to migrate to newer PIC32MX1XX/2XX/3XX/4XX/5XX/6XX/7XX families with retained code structure when scaling to more demanding projects.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX320F064HT-80V/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX320F064HT-80I/MR | PIC32MX320F064H-80I/MR | PIC32MX320F064H-40I/MR | PIC32MX320F064HT-40I/MR | PIC32MX230F128H-50I/MR | PIC32MX150F256H-50I/MR |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | VQFN-64 (9x9 mm) | VQFN-64 (9x9 mm) - same | VQFN-64 (9x9 mm) - same | VQFN-64 (9x9 mm) - same | VQFN-64 (9x9 mm) - same | VQFN-64 (9x9 mm) - same | VQFN-64 (9x9 mm) - same |
| Core | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit (MX2xx) | MIPS32 M4K 32-bit (MX1xx) |
| Max Clock Frequency | 80 MHz | 80 MHz | 80 MHz | 40 MHz (-50%) | 40 MHz (-50%) | 50 MHz (-37.5%) | 50 MHz (-37.5%) |
| Flash Memory | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 128 KB (+100%) | 256 KB (+300%) |
| RAM Size | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Operating Temperature | -40 C to +105 C (V) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) | -40 C to +85 C (I) |
| Packaging | Tape & Reel (T) | Tape & Reel (T) | Tray | Tray | Tape & Reel (T) | Tray | Tray |
| USB Interface | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG |
| ADC | 10-bit 16-ch 1 MSPS | 10-bit 16-ch 1 MSPS | 10-bit 16-ch 1 MSPS | 10-bit 16-ch 1 MSPS | 10-bit 16-ch 1 MSPS | 10-bit 9-ch 1 MSPS (-43% channels) | 10-bit 15-ch 1 MSPS (-6% channels) |
Key Differentiators
- Extended -40 C to +105 C temperature range for industrial/automotive underhood applications (vs PIC32MX320F064HT-80I/MR)
- Highest clock speed in PIC32MX320 family at 80 MHz (vs PIC32MX320F064HT-40I/MR)
- Full 64 KB Flash and 16 KB SRAM matches all MX320 family silicon capability (vs PIC32MX230F128H-50I/MR)
Design Notes
The 64-pin VQFN package has a center exposed thermal pad (EP) that must be soldered to a ground copper pour for electrical performance and thermal dissipation. Microchip recommends a 0.5 mm pitch land pattern with at least 4 thermal vias (0.3 mm drill) connecting the EP to the inner ground plane. Without proper EP soldering, junction temperature may exceed safe limits during high CPU loads with USB active, reducing long-term reliability.
The PIC32MX320F064HT-80V/MR requires decoupling on every VDD/VSS pin pair. Place one 0.1 uF ceramic capacitor (X7R, 6.3V minimum) within 2 mm of each VDD pin (pins 5, 22, 26, 36, 41) and one 10 uF bulk capacitor near the device. The internal 1.8V voltage regulator on VDD is enabled by default via the ENVREG pin (pin 64); tie ENVREG to VDD for normal operation. The VUSB pin (pin 47) requires a 0.1 uF + 4.7 uF pair for stable USB transceiver operation.
Do not confuse 'V' temperature suffix (-40 C to +105 C) with 'I' suffix (-40 C to +85 C) when ordering - the 'V' variant is required for extended temperature environments but may have longer lead times during allocation. Also verify whether you need 'T' (Tape & Reel) or non-'T' (Tray) packaging before finalizing the BOM, as swapping mid-production is expensive. The PGED1/PGEC1 pair (pins 15/16) and PGED3/PGEC3 pair (pins 62/63) are dual-purpose programming/debug pins - route them with short, direct traces to the ICSP header to avoid debug failures.
Place the 12 MHz primary crystal or oscillator within 5 mm of the OSC1/OSC2 pins (pins 11/12) and surround it with a ground guard ring to minimize EMI. The USB D+/D- traces (pins 45/46) must be 90 ohm differential, length-matched to within 2 mm, and routed over a continuous ground plane to meet USB 2.0 Full-Speed signal integrity requirements. Keep the VUSB trace short (under 10 mm) to minimize noise coupling into the USB transceiver. The MCLR reset line (pin 61) needs a 10 kohm pull-up to VDD for reliable operation.
Compliance Information
RoHS compliant per Microchip product page. Lead-free (Pb-free) reflow compatible up to 260 C peak per JEDEC J-STD-020. MSL Level 3 floor life of 168 hours. Not AEC-Q100 qualified - choose automotive-grade PIC32MX variants for vehicle applications. Halogen-free per Microchip product specifications.
