PIC32MX340F512HT-80V/MR - 512KB Flash 32-bit MCU | Microchip
MPN: PIC32MX340F512HT-80V/MR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.7393 | $6.74 |
| 10 | $6.06 | $60.60 |
| 100 | $5.39 | $539.00 |
| 500 | $4.85 | $2,425.00 |
| 1,000 | $4.31 | $4,310.00 |
PIC32MX340F512HT-80V/MR Overview
What is a PIC32MX3XX/4XX microcontroller? PIC32MX3XX/4XX devices are Microchip's general-purpose 32-bit MIPS MCU family featuring a 5-stage pipeline Harvard architecture, single-cycle hardware multiply/divide, MIPS16e code compression for up to 40% smaller code size, and 32x32-bit core plus shadow registers for fast context switching. They sit within the broader hierarchy: microcontroller (MCU) -> embedded microcontroller -> 32-bit MCU -> MIPS M4K core -> Microchip PIC32 family, serving mainstream performance applications between 8-bit PIC16/PIC24 and 32-bit Cortex-M class devices.
Key features include 80 MHz maximum operating frequency (105 DMIPS throughput), 512 KB Flash program memory, 32 KB SRAM data memory, USB 2.0 full-speed On-The-Go (OTG), a 16-channel 10-bit ADC with 1 Msps conversion rate, two I2C, two SPI, two UART, and five 16-bit timers. The 53 I/O pins support 5V-tolerant inputs, and the integrated DMA engine offloads data movement from the CPU. Hardware-level PMP and EBI interfaces enable external memory and parallel peripherals.
Architecturally, the PIC32MX340 uses a 5-stage MIPS32 M4K pipeline with hardware multiply/divide, 32 x 32-bit general-purpose registers plus shadow register sets for low-latency interrupt handling (sub-15-cycle response). The 1.8V internal core regulator interfaces to a 2.3-3.6V external supply, supporting low-power run, idle, and sleep modes with typical sleep currents under 1 uA.
Typical applications include industrial control panels, USB peripherals (Human Interface Devices, CDC serial bridges, mass storage), graphic display HMI with PMP-driven TFT or OLED panels, sensor aggregation nodes with DMA-driven ADC sampling, and consumer appliances requiring 32-bit throughput at PIC cost-of-ownership.
Design consideration: the VQFN-9x9 mm exposed pad must be soldered to a ground pour to meet thermal specifications (theta_JA approximately 24 C/W). Programming uses ICSP via PGECx/PGEDx pairs; any pair may be used but must be used as a matched pair.
This page synthesizes distributor pricing, parametric alternatives, and PCB-aware design notes not found on the manufacturer datasheet.
Drop-in alternatives for PIC32MX340F512HT-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 PIC32MX340F512HT-80V/MR (same form factor and footprint) — differing in Package, ADC, Core Architecture, DMA Channels, USB.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX340F512H-80V/MR
✅ Drop-In✓ In Stock
$5.03 / Unit
View Datasheet →PIC32MX340F512HT-80I/MR
✅ Drop-In✓ In Stock
$4.36 / Unit
View Datasheet →PIC32MX340F512H-80I/MR
✅ Drop-In✓ In Stock
$6.55 / Unit
View Datasheet →PIC32MX340F256HT-80I/MR
✅ Drop-In✓ In Stock
$5.42 / Unit
View Datasheet →PIC32MX340F128HT-80V/MR
✅ Drop-In✓ In Stock
$3.92 / Unit
View Datasheet →PIC32MX340F512HT-80V/MR Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K, 32-bit, 5-stage pipeline |
| Maximum CPU Clock | 80 MHz (105 DMIPS) |
| Program Flash Memory | 512 KB (512K x 8) |
| Data SRAM | 32 KB |
| Number of I/O Pins | 53 |
| ADC | 10-bit, 16-channel, 1 Msps |
| DMA Channels | Yes (8-channel) |
| USB Interface | USB 2.0 Full-Speed OTG |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| Timers | 5 x 16-bit |
| Operating Voltage | 2.3 V to 3.6 V |
| Operating Temperature | -40C to +105C (V grade) |
| Package | 64-VQFN Exposed Pad, 9x9 mm |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free | Yes |
PIC32MX340F512HT-80V/MR Pin Configuration
| Pin 1 | RG0 — General purpose I/O |
| Pin 2 | RG1 — General purpose I/O |
| Pin 3 | RG2 — General purpose I/O |
| Pin 4 | RG3 — General purpose I/O |
| Pin 5 | VDD — Power supply (2.3-3.6V) |
| Pin 6 | VSS — Ground |
| Pin 7 | RG6 — General purpose I/O / SDA2 |
| Pin 8 | RG7 — General purpose I/O / SCL2 |
| Pin 9 | RG8 — General purpose I/O |
| Pin 10 | RG9 — General purpose I/O |
| Pin 11 | MCLR — Master clear / reset (active-low) |
| Pin 12 | RA0 — General purpose I/O / Analog input AN0 |
| Pin 13 | RA1 — General purpose I/O / Analog input AN1 |
| Pin 14 | RA2 — General purpose I/O / Analog input AN2 |
| Pin 15 | RA3 — General purpose I/O / Analog input AN3 |
| Pin 16 | RA4 — General purpose I/O / Analog input AN4 |
| Pin 17 | RA5 — General purpose I/O / Analog input AN5 |
| Pin 18 | RA6 — General purpose I/O |
| Pin 19 | RA7 — General purpose I/O |
| Pin 20 | RB0 — General purpose I/O / PGED1 (programming data) |
| Pin 21 | RB1 — General purpose I/O / PGEC1 (programming clock) |
| Pin 22 | RB2 — General purpose I/O / SDA1 |
| Pin 23 | RB3 — General purpose I/O / SCL1 |
| Pin 24 | RB4 — General purpose I/O |
| Pin 25 | RB5 — General purpose I/O |
| Pin 26 | RB6 — General purpose I/O / PGED2 |
| Pin 27 | RB7 — General purpose I/O / PGEC2 |
| Pin 28 | RB8 — General purpose I/O |
| Pin 29 | RB9 — General purpose I/O |
| Pin 30 | RB10 — General purpose I/O |
| Pin 31 | RB11 — General purpose I/O |
| Pin 32 | RB12 — General purpose I/O |
| Pin 33 | RB13 — General purpose I/O |
| Pin 34 | RB14 — General purpose I/O |
| Pin 35 | RB15 — General purpose I/O |
| Pin 36 | RC1 — General purpose I/O / T2CK |
| Pin 37 | RC2 — General purpose I/O / T3CK |
| Pin 38 | RC3 — General purpose I/O |
| Pin 39 | RC4 — General purpose I/O |
| Pin 40 | VDD — Power supply (2.3-3.6V) |
| Pin 41 | VSS — Ground |
| Pin 42 | RC13 — General purpose I/O |
| Pin 43 | RC14 — General purpose I/O |
| Pin 44 | RD0 — General purpose I/O |
| Pin 45 | RD1 — General purpose I/O |
| Pin 46 | RD2 — General purpose I/O |
| Pin 47 | RD3 — General purpose I/O |
| Pin 48 | RD4 — General purpose I/O |
| Pin 49 | RD5 — General purpose I/O |
| Pin 50 | RD6 — General purpose I/O |
| Pin 51 | RD7 — General purpose I/O |
| Pin 52 | RE0 — General purpose I/O / PMD0 |
| Pin 53 | RE1 — General purpose I/O / PMD1 |
| Pin 54 | RE2 — General purpose I/O / PMD2 |
| Pin 55 | RE3 — General purpose I/O / PMD3 |
| Pin 56 | RE4 — General purpose I/O / PMD4 |
| Pin 57 | RE5 — General purpose I/O / PMD5 |
| Pin 58 | RE6 — General purpose I/O / PMD6 |
| Pin 59 | RE7 — General purpose I/O / PMD7 |
| Pin 60 | RF0 — General purpose I/O |
| Pin 61 | RF1 — General purpose I/O |
| Pin 62 | D+ — USB D+ (full-speed OTG) |
| Pin 63 | D- — USB D- (full-speed OTG) |
| Pin 64 | VDD — Power supply (2.3-3.6V) |
| Pin EP | EP — Exposed thermal pad - must be soldered to ground pour for thermal dissipation |
Typical Applications
PIC32MX340F512HT-80V/MR is suitable for 6 applications: Industrial Control Panel MCU, USB HID / CDC Peripheral Bridge, Graphic Display HMI Controller, Sensor Aggregation Node with DMA, Consumer Appliance Main Controller, USB Host Mass Storage Device.
Industrial Control Panel MCU
The PIC32MX340F512HT-80V/MR drives industrial HMI panels requiring 32-bit throughput, USB connectivity, and robust -40C to +105C operation. Its 512 KB Flash accommodates full USB stack plus graphic libraries, 32 KB SRAM buffers USB transactions and command queues, and 53 I/O lines interface to keypads, displays, and relay drivers. The 80 MHz MIPS M4K core executes control loops at sub-millisecond intervals. The DMA controller offloads ADC scans for capacitive touch sensing, leaving the CPU free for user-interface logic. Engineered for IEC 61000-4 EMC environments when paired with proper PCB layout.
Recommended
USB HID / CDC Peripheral Bridge
The PIC32MX340F512HT-80V/MR is optimized for USB peripherals including HID keyboards/mice, CDC serial bridges, and MSD card readers. The integrated USB 2.0 Full-Speed OTG controller with on-chip transceiver eliminates external PHY cost. The 105 DMIPS throughput handles USB stack plus application logic simultaneously, while DMA channels move USB packet data without CPU intervention. The 32 KB SRAM buffers USB descriptors and HID reports; 512 KB Flash stores both USB stack and user application. The VQFN-64 footprint enables single-layer PCBs in space-constrained dongle designs.
Recommended
Graphic Display HMI Controller
The PIC32MX340F512HT-80V/MR drives small TFT or OLED graphic displays via its Parallel Master Port (PMP) at up to 25 MHz pixel-clock rates, sufficient for 320x240 QVGA panels. Its 53 I/O lines provide 16-bit PMP plus touch and control signals; 32 KB SRAM holds partial frame buffer for incremental updates. The 80 MHz MIPS core handles anti-aliased rendering, while DMA channels continuously refresh the panel without CPU load. The -40C to +105C temp range suits industrial machine-front HMI displays. Combined with the 10-bit ADC, the same MCU also reads touch sensors and analog control inputs.
Recommended
Sensor Aggregation Node with DMA
The PIC32MX340F512HT-80V/MR aggregates multiple sensors via its 10-bit ADC (16 channels, 1 Msps) and DMA engine, offloading the CPU from repetitive sampling tasks. 53 I/O lines accept SPI, I2C, and analog sensor inputs simultaneously. DMA channels buffer ADC samples and forward SPI/I2C payloads to RAM while the CPU executes averaging, calibration, and protocol stacks. The 80 MHz throughput compresses samples, packages telemetry, and serves a host via USB or UART. The 512 KB Flash stores DSP filters, lookup tables, and OTA bootloader code in a single image.
Recommended
Consumer Appliance Main Controller
The PIC32MX340F512HT-80V/MR is well suited as the main controller in mid-range consumer products including smart kitchen appliances, robotic vacuum cleaners, and HVAC zone controllers. Its 512 KB Flash stores graphical UI plus connectivity stacks; 32 KB SRAM accommodates communication buffers and event queues. The two I2C, two SPI, and two UART interfaces connect to sensors, motor drivers, and Wi-Fi/BLE modules. The 80 MHz MIPS core runs PID control loops at kHz rates while simultaneously updating displays. Surface Mount and tape-and-reel packaging fit automated production lines for high-volume consumer builds.
Recommended
USB Host Mass Storage Device
The PIC32MX340F512HT-FF hosts USB mass storage devices (USB flash drives, SD card readers) for data loggers, industrial backup modules, and firmware update kiosks. The USB OTG controller can operate in host mode with external 5V VBUS switching; the integrated DMA moves sector-sized payloads to/from external memory at full USB Full-Speed rates. 512 KB Flash stores USB host stack plus file system code (FAT/exFAT libraries); 32 KB RAM is sufficient for sector buffers. The 53 I/O pins drive an LCD for menu display, push-buttons, and a host-port power switch.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX340F512HT-80V/MR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX340F512H-80V/MR | PIC32MX340F512HT-80I/MR | PIC32MX340F512H-80I/MR | PIC32MX340F256HT-80I/MR | PIC32MX340F128HT-80V/MR |
|---|---|---|---|---|---|---|
| Package | 64-VQFN-EP (9x9 mm) | 64-VQFN-EP (9x9 mm) - identical | 64-VQFN-EP (9x9 mm) - identical | 64-VQFN-EP (9x9 mm) - identical | 64-VQFN-EP (9x9 mm) - identical | 64-VQFN-EP (9x9 mm) - identical |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 512 KB | 512 KB | 512 KB | 512 KB | 256 KB (-50%) | 128 KB (-75%) |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Max CPU Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Operating Temperature | -40C to +105C (V grade) | -40C to +105C (V grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +105C (V grade) |
| Packaging Carrier | Tape and Reel | Tube | Tape and Reel | Tube | Tape and Reel | Tape and Reel |
| USB OTG | Yes (FS-OTG) | Yes (FS-OTG) | Yes (FS-OTG) | Yes (FS-OTG) | Yes (FS-OTG) | Yes (FS-OTG) |
| ADC | 10-bit, 16-ch | 10-bit, 16-ch | 10-bit, 16-ch | 10-bit, 16-ch | 10-bit, 16-ch | 10-bit, 16-ch |
Key Differentiators
- Identical silicon to PIC32MX340F512H-80V/MR with Tape & Reel packaging (vs PIC32MX340F512H-80V/MR)
- Wider -40C to +105C temp range than PIC32MX340F512H-80I/MR (vs PIC32MX340F512H-80I/MR)
- 4x Flash of PIC32MX340F128HT-80V/MR (vs PIC32MX340F128HT-80V/MR)
Design Notes
The 64-VQFN-EP package requires the exposed pad to be soldered to a substantial copper ground pour on the PCB to meet the thermal resistance specification (approximately 24 C/W with proper layout). If the pad is not soldered or has only a small thermal via array, junction temperature can rise significantly above ambient under high CPU activity, especially with USB and ADC enabled. Recommended layout: a grid of 0.3 mm thermal vias connecting top copper pour to a 2 oz inner-layer ground plane, filling the entire 9x9 mm pad area.
PIC32MX3XX/4XX silicon revision A1 has documented errata items including the ADC, USB, and timer peripherals. Always check the Microchip PIC32MX3XX/4XX family errata document against the device date code / ROM version field (FF_FE_DE_XX in the device configuration). Phase identification is read at runtime via the device configuration registers. Newer errata-free revisions may require MPLAB XC32 compiler version 3.00 or later for proper workaround generation.
The PIC32MX340F512HT-80V/MR has multiple VDD/VSS pin pairs (pins 5/6, 40/41, 64). Each pair must be independently decoupled with a 100 nF ceramic capacitor placed as close as possible to the IC pins (<2 mm trace length). Add a single 10 uF bulk capacitor near the IC for transient response. The VBUS pin for USB (if used in host mode) requires a separate 5 V supply switch controlled by a P-channel MOSFET, with appropriate current limiting per USB 2.0 specification (100 mA max for low-power, 500 mA for high-power).
Route the USB D+/D- traces as a 60-ohm differential pair with no stubs, matching length within 50 mil, and avoiding any layer transitions if practical. The 15K pull-down resistors required for host mode identification must be placed within 50 mm of the USB connector. Series ferrite beads on VBUS are recommended to suppress EMI. Crystal traces (OSC1/OSC2 or SOSCO/SOSCI) should be as short as possible and guarded by ground pour.
Compliance Information
RoHS compliant and lead-free per Microchip product page. Not AEC-Q100 qualified; for automotive designs step up to PIC32MX5XX/6XX/7XX family or use AEC-Q100 qualified PIC32MX variants. Reach SVHC compliant per Microchip declaration.
