PIC32MX340F512H-80V/PT - 32-bit MCU 512KB Flash 80MHz 64-TQFP | Microchip
MPN: PIC32MX340F512H-80V/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.45 | $7.45 |
| 10 | $6.71 | $67.10 |
| 100 | $5.96 | $596.00 |
| 500 | $5.32 | $2,660.00 |
| 1,000 | $4.78 | $4,780.00 |
PIC32MX340F512H-80V/PT Overview
A PIC32MX microcontroller is a 32-bit Flash MCU based on the MIPS32 M4K core with 5-stage pipeline, Harvard architecture, single-cycle multiply and hardware divide unit. It belongs to the broader hierarchy: microcontroller -> embedded MCU -> 32-bit MCU -> MIPS-based MCU -> semiconductor IC. The PIC32MX family targets applications requiring more processing performance than 8/16-bit MCUs while maintaining the peripheral integration and ease-of-use of Microchip's PIC ecosystem.
Key features of the PIC32MX340F512H-80V/PT include 80MHz/105 DMIPS performance, 512KB Flash program memory, 32KB SRAM, 53 I/O pins, 10-bit ADC, DMA controller, USB 2.0 full-speed device/host/OTG, and a wide operating voltage range of 2.3V to 3.6V. The -80V temperature grade extends the operating range to -40C to +105C. The 64-TQFP package offers robust surface-mount assembly and ample I/O access for connectivity-rich designs.
Architecturally, the device integrates the MIPS M4K core with 32x32-bit core registers, 32x32-bit shadow registers for fast context switch and interrupt response, and MIPS16e mode that reduces code size by up to 40%. The 5-stage pipeline and hardware multiply/divide accelerate DSP-class workloads and control loops. Peripherals are mapped via separate data and instruction buses, enabling simultaneous fetch and data access typical of Harvard architectures.
Typical applications include USB peripherals, industrial control interfaces, motor control, embedded graphics/HMI, point-of-sale terminals, medical instrumentation, and consumer audio devices. The combination of DMA, USB, ADC and generous RAM makes it well suited for protocol bridging (USB-to-UART, USB-to-SPI) and tethered data-acquisition front-ends.
When designing with this part, allocate the 64-TQFP footprint, route the ICSP PGECx/PGEDx pair with short traces to the programming header, and place the 32.768 kHz secondary oscillator crystal close to the SOSC pins. Decouple VDD/VSS with 0.1uF + bulk caps per Microchip Section 2 (Power Supply) of the PIC32MX3XX/4XX family reference manual.
This page synthesizes distributor pricing, drop-in alternatives within the PIC32MX family, and practical PCB design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for PIC32MX340F512H-80V/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 PIC32MX340F512H-80V/PT (same form factor and footprint) — differing in ADC, Package, Core Architecture, DMA Channels, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX340F512HT-80V/PT
✅ Drop-In✓ In Stock
$5.18 / Unit
View Datasheet →PIC32MX340F512H-80I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX340F256H-80V/PT
✅ Drop-In✓ In Stock
$4.4 / Unit
View Datasheet →PIC32MX440F512H-80V/PT
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX340F128H-80V/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC32MX340F512H-80V/PT Maximum Ratings & Electrical Characteristics
| Core | MIPS32 M4K |
| Core Architecture | 32-bit RISC, 5-stage pipeline, Harvard |
| Maximum CPU Speed | 80 MHz |
| DMIPS Performance | 105 DMIPS |
| Program Flash Memory | 512 KB (512K x 8) |
| SRAM | 32 KB |
| Number of I/O Pins | 53 |
| ADC | 10-bit |
| DMA Controller | Yes |
| Operating Voltage Range | 2.3 V to 3.6 V |
| Operating Temperature Range | -40 C to +105 C (-80V grade) |
| Package | 64-pin TQFP (PT), 10 x 10 x 1 mm |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
PIC32MX340F512H-80V/PT Pin Configuration
| Pin 1 | RPB0/AN0 — Remappable I/O, analog input 0 |
| Pin 2 | RPB1/AN1 — Remappable I/O, analog input 1 |
| Pin 3 | RPB2/AN2 — Remappable I/O, analog input 2 |
| Pin 4 | RPB3/AN3 — Remappable I/O, analog input 3 |
| Pin 5 | RPB4/AN4 — Remappable I/O, analog input 4 |
| Pin 6 | RPB5/AN5 — Remappable I/O, analog input 5 |
| Pin 7 | RPB6/AN6 — Remappable I/O, analog input 6 |
| Pin 8 | RPB7/AN7 — Remappable I/O, analog input 7 |
| Pin 9 | RPB8/AN8 — Remappable I/O, analog input 8 |
| Pin 10 | RPB9/AN9 — Remappable I/O, analog input 9 |
| Pin 11 | VSS — Ground reference |
| Pin 12 | VDD — Positive supply (2.3-3.6V) |
| Pin 13 | RPC6 — Remappable I/O |
| Pin 14 | RPC7 — Remappable I/O |
| Pin 15 | RPC8 — Remappable I/O |
| Pin 16 | RPC9 — Remappable I/O |
| Pin 17 | VSS — Ground reference |
| Pin 18 | OSC1/CLKI — Crystal oscillator input or external clock in |
| Pin 19 | OSC2/CLKO — Crystal oscillator output or clock out |
| Pin 20 | VSS — Ground reference |
| Pin 21 | VDD — Positive supply (2.3-3.6V) |
| Pin 22 | RPC0 — Remappable I/O |
| Pin 23 | RPC1 — Remappable I/O |
| Pin 24 | RPC2 — Remappable I/O |
| Pin 25 | RPC3 — Remappable I/O |
| Pin 26 | RPC4 — Remappable I/O |
| Pin 27 | RPC5 — Remappable I/O |
| Pin 28 | VSS — Ground reference |
| Pin 29 | VDD — Positive supply (2.3-3.6V) |
| Pin 30 | RPD0/INT0 — Remappable I/O, external interrupt 0 |
| Pin 31 | RPD1/INT1 — Remappable I/O, external interrupt 1 |
| Pin 32 | RPD2/INT2 — Remappable I/O, external interrupt 2 |
| Pin 33 | RPD3/INT3 — Remappable I/O, external interrupt 3 |
| Pin 34 | RPD4/INT4 — Remappable I/O, external interrupt 4 |
| Pin 35 | RPD5 — Remappable I/O |
| Pin 36 | RPD6 — Remappable I/O |
| Pin 37 | RPD7 — Remappable I/O |
| Pin 38 | RPD8 — Remappable I/O |
| Pin 39 | RPD9 — Remappable I/O |
| Pin 40 | RPD10 — Remappable I/O |
| Pin 41 | RPD11 — Remappable I/O |
| Pin 42 | VSS — Ground reference |
| Pin 43 | VDD — Positive supply (2.3-3.6V) |
| Pin 44 | RPD12 — Remappable I/O |
| Pin 45 | RPD13 — Remappable I/O |
| Pin 46 | RPD14 — Remappable I/O |
| Pin 47 | RPD15 — Remappable I/O |
| Pin 48 | SOCI/RPE8 — Secondary oscillator or remappable I/O |
| Pin 49 | SOSCO/RPE9 — Secondary oscillator output or remappable I/O |
| Pin 50 | TMPR/RPE0 — Tamper detect or remappable I/O |
| Pin 51 | RPE1 — Remappable I/O |
| Pin 52 | RPE2 — Remappable I/O |
| Pin 53 | RPE3 — Remappable I/O |
| Pin 54 | RPE4 — Remappable I/O |
| Pin 55 | RPE5 — Remappable I/O |
| Pin 56 | RPE6 — Remappable I/O |
| Pin 57 | RPE7 — Remappable I/O |
| Pin 58 | VSS — Ground reference |
| Pin 59 | VDD — Positive supply (2.3-3.6V) |
| Pin 60 | D+/RPF3 — USB D+ data line |
| Pin 61 | D-/RPF2 — USB D- data line |
| Pin 62 | VBUS — USB VBUS detect |
| Pin 63 | RPF0 — Remappable I/O |
| Pin 64 | RPF1 — Remappable I/O |
Typical Applications
PIC32MX340F512H-80V/PT is suitable for 7 applications: USB Peripherals and Tethered Devices, Industrial Control Interfaces, Embedded HMI and Graphical Displays, Medical Instrumentation and Data Acquisition, Consumer Audio Devices, Point-of-Sale (POS) Terminals, Motor Control and PWM Drives.
USB Peripherals and Tethered Devices
The PIC32MX340F512H-80V/PT is well-suited for USB peripherals thanks to its integrated USB 2.0 full-speed controller supporting device, host, and OTG modes. With 80 MHz/105 DMIPS and 32 KB SRAM, it handles USB class drivers (HID, CDC, MSD) without taxing the core. The 512 KB Flash accommodates full USB stacks plus application code, while the 64-TQFP exposes the dedicated USB D+/D- pads. Placed as the main MCU on the PCB between the USB connector and the application-specific peripherals; key trade-off vs dedicated USB controllers is that integrated USB ties up some RAM for endpoint buffers. Compared to a discrete USB-interface + 8-bit MCU solution, the PIC32MX340F512H reduces BOM count and PCB area while delivering 10-20x the CPU performance.
Recommended
Industrial Control Interfaces
The PIC32MX340F512H-80V/PT fits industrial control designs thanks to its 80 MHz core, 10-bit ADC, DMA, and -40C to +105C (-80V grade) temperature range. The 53 I/O pins support multi-channel sensor interfaces, encoder feedback, and PWM outputs. The Harvard architecture and single-cycle multiply/divide make it capable of PID loops at kHz rates alongside housekeeping tasks. Placed as the supervisory MCU on a control board, the device reads analog sensors via its 10-bit ADC, drives optocouplers via PWM, and communicates to a host PLC over UART/SPI/Ethernet. The key trade-off vs an external ADC + 8-bit MCU is integration: one chip replaces CPU, ADC, and some glue logic. Compared to 32-bit ARM Cortex-M0+ alternatives at this price point, the PIC32MX340F512H offers more Flash (512 KB vs typical 128-256 KB) for protocol stacks.
Recommended
Embedded HMI and Graphical Displays
The PIC32MX340F512H-80V/PT can drive small TFT or OLED displays in embedded HMI panels due to its 105 DMIPS performance and 32 KB SRAM. The Parallel Master Port (PMP) on the 64-TQFP variant interfaces directly to 8/16-bit display controllers, while the DMA controller offloads screen refreshes from the CPU. Typical HMI panels use it to render menus, gauges, and animations while handling touch input via SPI/I2C. Placed between the display connector and the application sensors, the MCU continuously refreshes the framebuffer while servicing user input. Trade-off vs external display controller + low-end MCU: integrated DMA and 32-bit core enable smoother animation at lower BOM cost. Compared to higher-end PIC32MX5/6/7 variants with dedicated graphics peripherals, this part is the right choice when display refresh rates stay under ~30 FPS and resolution under 320x240.
Recommended
Medical Instrumentation and Data Acquisition
The PIC32MX340F512H-80V/PT serves medical data acquisition front-ends thanks to its 10-bit ADC, DMA-driven sampling, and 32 KB RAM for sample buffering. The 80 MHz core executes digital filtering (FIR/IIR) on incoming sensor streams while USB exports processed data to a host PC. Medical-grade designs typically require IEC 60601 isolation around this MCU; the part itself does not carry medical safety certifications. Placed on the patient-side isolated section, it digitizes analog biosignals (ECG, SpO2, temperature) and pushes them via isolated USB or UART. Compared to a separate ADC + low-end MCU architecture, integrated DMA + ADC + USB reduces component count and improves signal integrity by shortening analog trace lengths.
Recommended
Consumer Audio Devices
The PIC32MX340F512H-80V/PT fits consumer audio products (digital mixers, effects pedals, USB audio interfaces) because its 80 MHz MIPS32 core runs audio DSP algorithms (filters, FFT) at low latency. With 32 KB RAM, it stores small audio buffers; 512 KB Flash holds sample banks and configuration. The I2S peripheral on the 64-TQFP variant interfaces directly to external audio DACs/ADCs, while USB transports digital audio streams to host PCs. Placed between audio CODECs and the USB connector, the MCU acts as the audio-class device controller and DSP. Compared to dedicated USB audio + DSP chips, the PIC32MX340F512H offers firmware flexibility at the cost of more careful firmware tuning. Choose PIC32MX270F256B for cheaper, smaller consumer audio builds.
Recommended
Point-of-Sale (POS) Terminals
The PIC32MX340F512H-80V/PT handles POS terminal main-controller duties due to its USB host mode (for keyboard/barcode scanner), UART/SPI peripherals (for receipt printer and magnetic-stripe reader), and 32 KB RAM to buffer transaction data. The 64-TQFP package provides enough I/O (53 pins) for keypad matrix, LCD interface, and multiple serial peripherals. Placed at the heart of the POS terminal, it manages the user interface, card reader, and secure transaction flow. Trade-off vs ARM Cortex-A application processors: PIC32MX340F512H costs less and runs deterministic real-time code, but cannot host a full Linux/Java stack. Compared to PIC32MX1/2-series parts, the 512 KB Flash and DMA simplify multi-peripheral POS firmware.
Recommended
Motor Control and PWM Drives
The PIC32MX340F512H-80V/PT suits motor control applications (BLDC, stepper, small PMSM) through its 80 MHz core executing fast control loops plus its 16-bit timers and PWM outputs on the 64-TQFP. With 32 KB RAM, it captures ADC samples for current/voltage sensing and computes vector control in real time. DMA offloads sampling so the CPU focuses on the control algorithm. Placed on the motor-drive PCB, it generates complementary PWM with dead-time insertion, samples phase currents via the 10-bit ADC, and implements closed-loop commutation. Compared to dedicated motor-control MCUs like dsPIC33, the PIC32MX340F512H lacks DSP extensions, so use it for trapezoidal/sinusoidal control rather than field-oriented control of high-end motors.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX340F512H-80V/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX340F512HT-80V/PT | PIC32MX340F512H-80I/PT | PIC32MX340F256H-80V/PT | PIC32MX440F512H-80V/PT | PIC32MX340F128H-80V/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (PT) 10x10 mm | 64-TQFP (PT) 10x10 mm - same | 64-TQFP (PT) 10x10 mm - same | 64-TQFP (PT) 10x10 mm - same | 64-TQFP (PT) 10x10 mm - same | 64-TQFP (PT) 10x10 mm - same |
| Flash Memory | 512 KB | 512 KB | 512 KB | 256 KB | 512 KB | 128 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Core Speed | 80 MHz / 105 DMIPS | 80 MHz / 105 DMIPS | 80 MHz / 105 DMIPS | 80 MHz / 105 DMIPS | 80 MHz / 105 DMIPS | 80 MHz / 105 DMIPS |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +85C | -40C to +105C | -40C to +105C | -40C to +105C |
| Number of I/O | 53 | 53 | 53 | 53 | 53 | 53 |
| Packaging | Tray | Tape & Reel | Tray | Tray | Tray | Tray |
Key Differentiators
- Tape-and-reel volume-assembly variant with identical silicon (vs PIC32MX340F512HT-80V/PT)
- Halved Flash in same footprint (vs PIC32MX340F256H-80V/PT)
- Industrial-temperature sibling part (vs PIC32MX340F512H-80I/PT)
Design Notes
Decouple every VDD/VSS pair (pins 12/11, 21/20, 29/28, 43/42, 59/58) with a 0.1uF ceramic capacitor placed within 3 mm of each VDD pin, plus a single 10uF bulk tantalum or ceramic near the MCU. Per the PIC32MX3XX/4XX family reference manual, the MCU core draws up to 75 mA active and ~50uA in sleep. Use a low-dropout regulator such as MCP1700 (3.3V LDO, 250 mA) or MCP1826 for the 3.3V rail, with input voltage held above 3.6V for clean regulation. Avoid routing the USB D+/D- lines across noisy power traces.
Use a 4-layer PCB stack-up for the 64-TQFP, with a continuous ground plane on layer 2 directly under the MCU. Place the 8 MHz or 12 MHz primary crystal at OSC1/OSC2 (pins 18-19) with traces shorter than 5 mm, surrounded by a ground ring with no other signals crossing. The 32.768 kHz secondary crystal at SOSCI/SOSCO (pins 48-49) similarly needs a tight ground reference. Place the ICSP header (PGECx/PGEDx) within 100 mm of the ICSP pins and keep those traces short per Section 1 of the family reference manual. Maintain a continuous ground return path for all high-speed signals.
Do not exceed 3.6V on any VDD pin - the PIC32MX340F512H is NOT 5V tolerant on most I/O except a few specific pins. Use level shifters (e.g., MCP23S17, MCP4725) for 5V interfaces. When migrating code from 8-bit PIC18 to PIC32MX, watch the 32-bit pointer size (4 bytes vs 1-2 bytes) and the difference in peripheral library naming (XC32 vs C18). Ensure the configuration bits set the correct oscillator mode (FRC, Primary HS, etc.) before code execution; an unconfigured part will fail to start. The USB bus requires a 48 MHz clock with +/- 0.25% accuracy - use the on-chip PLL with a crystal source, not the internal FRC oscillator.
Estimated: at typical 80 MHz active operation with USB enabled, the PIC32MX340F512H-80V/PT dissipates around 0.4-0.6 W internally. The 64-TQFP package has a theta_JA of approximately 38 C/W on a 4-layer JEDEC test board, so the die-to-ambient rise is roughly 15-25 C above ambient. In enclosed industrial environments, provide a copper pour of at least 1 sq cm on top layer beneath the TQFP to keep junction temperature below the 125 C maximum. The -80V grade adds 20 C of headroom over the -80I grade for high-temperature environments.
Compliance Information
RoHS and lead-free per Microchip product page. Not AEC-Q100 qualified - this part targets industrial and consumer markets, not automotive. Reach SVHC declaration compliant per Microchip environmental compliance page.
