PIC32MX340F256H-80V/MR - 80MHz 32-bit MCU 256KB Flash | Microchip
MPN: PIC32MX340F256H-80V/MR ✓ Hoạt độngPIC32MX340F256H-80V/MR Tóm tắt
A PIC32MX MCU belongs to the 32-bit microcontroller category, which sits within the broader embedded computing hierarchy: microcontroller -> embedded processor -> system-on-chip -> semiconductor. The PIC32MX3XX/4XX family uses the MIPS32 M4K core to deliver significantly higher computational throughput than 8-bit or 16-bit predecessors while preserving the PIC peripheral ecosystem and MPLAB X IDE toolchain, enabling easy migration from older PIC24 or PIC32 architectures.
Key features include deterministic interrupt response, hardware Multiply/Divide, 16-bit parallel master port for external memory expansion, two I2C, two SPI, and five UART/PPPP interfaces. The integrated 10-bit ADC supports up to 16 channels at 500 ksps, while dedicated DMA channels enable high-throughput peripheral transfers without CPU intervention. The VQFN-64 package provides a compact footprint and enhanced thermal dissipation through its exposed pad.
Designed around the MIPS M4K pipeline with single-cycle multiply, the PIC32MX340 architecture offers 1.56 DMIPS/MHz performance. The 80 MHz maximum core frequency, combined with 5-stage pipeline execution, delivers deterministic real-time behavior suitable for USB stacks, sensor fusion, and small graphics rendering. Peripheral pin select (PPS) simplifies PCB routing by allowing flexible I/O assignment.
Typical applications include industrial control panels, USB peripherals (HID, CDC, MSD class devices), consumer audio equipment, medical instrumentation, and embedded HMI displays. Its combination of USB, ADC, and DMA makes it well-suited for data-acquisition and bridge devices. Choose the PIC32MX340F256H-80V/MR for new designs requiring USB connectivity with ample headroom in program memory.
When designing with this device, place decoupling capacitors close to every VDD/VSS pair, follow Microchip's reference USB design (90-ohm differential impedance), and use the exposed pad as the primary ground/thermal path. Always validate USB signal integrity using Microchip's HID or CDC stack example projects.
This page synthesizes distributor pricing from DigiKey and Mouser, drop-in alternative MPNs from the same PIC32MX family, and practical PCB design notes not collected in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX340F256H-80V/MR — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC32MX340F256H-80V/MR (cùng hình factor và footprint) — khác nhau ở ADC, Operating Temperature, USB, DMA Channels, Package.
PIC32MX340F256HT-80V/MR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX340F256H-80I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX340F256H-80V/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX450F256H-80V/MR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX360F256L-80I/PT
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX370F256H-80V/MR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX340F256H-80V/MR Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K |
| Core Size | 32-bit Single-Core |
| Maximum CPU Speed | 80 MHz |
| Program Memory (Flash) | 256 KB (256K x 8) |
| RAM Size | 32 KB (32K x 8) |
| Number of I/O Pins | 53 |
| Hộp / Vỏ | 64-VFQFN Exposed Pad (9x9 mm) |
| Operating Voltage | 2.3 V to 3.6 V |
| ADC | 10-bit, up to 16 channels |
| USB | USB 2.0 FS Device/Host/OTG |
| DMA | Yes |
| Nhiệt độ hoạt động | -40C to +105C |
| Kiểu lắp đặt | Surface Mount |
| Packaging | Tube (per JLCPCB listing) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC32MX340F256H-80V/MR
| Chân 1 | RP15/RF6 — Remappable I/O / RPC6 |
| Chân 2 | VDD — Core logic supply (2.3V-3.6V) |
| Chân 3 | RP14/RF5 — Remappable I/O |
| Chân 4 | RP13/RF4 — Remappable I/O |
| Chân 5 | RP12/RF3 — Remappable I/O |
| Chân 6 | RP11/RF2 — Remappable I/O |
| Chân 7 | RP10/RF1 — Remappable I/O |
| Chân 8 | RP9/RF0 — Remappable I/O |
| Chân 9 | VSS — Ground reference |
| Chân 10 | RP8/RG9 — Remappable I/O |
| Chân 11 | RP7/RG8 — Remappable I/O |
| Chân 12 | RP6/RG7 — Remappable I/O |
| Chân 13 | RP5/RG6 — Remappable I/O |
| Chân 14 | RP4/RG5 — Remappable I/O |
| Chân 15 | RP3/RG4 — Remappable I/O |
| Chân 16 | RP2/RG3 — Remappable I/O |
| Chân 17 | MCLR — Master Clear / Reset input (active low) |
| Chân 18 | RP1/RG2 — Remappable I/O |
| Chân 19 | VDD — Core logic supply (2.3V-3.6V) |
| Chân 20 | OSC1/CLKI/RC1 — Crystal oscillator input / external clock |
| Chân 21 | OSC2/CLKO/RC2 — Crystal oscillator output |
| Chân 22 | VSS — Ground reference |
| Chân 23 | AN15/C1IN-/CVREF-/CN12/RB15 — Analog input 15 / negative comparator input |
| Chân 24 | AN14/C1IN+/CN11/RB14 — Analog input 14 / positive comparator input |
| Chân 25 | AN13/C2IN-/CN10/RB13 — Analog input 13 / negative comparator input |
| Chân 26 | AN12/C2IN+/CN9/RB12 — Analog input 12 / positive comparator input |
| Chân 27 | AN11/RB11 — Analog input 11 |
| Chân 28 | AN10/RB10 — Analog input 10 |
| Chân 29 | AN9/RB9 — Analog input 9 |
| Chân 30 | AN8/RB8 — Analog input 8 |
| Chân 31 | VDD — Core logic supply (2.3V-3.6V) |
| Chân 32 | VSS — Ground reference |
| Chân 33 | AN7/RB7 — Analog input 7 |
| Chân 34 | AN6/RB6 — Analog input 6 |
| Chân 35 | AN5/RB5 — Analog input 5 |
| Chân 36 | AN4/RB4 — Analog input 4 |
| Chân 37 | AN3/RB3 — Analog input 3 |
| Chân 38 | AN2/RB2 — Analog input 2 |
| Chân 39 | AN1/RB1 — Analog input 1 |
| Chân 40 | AN0/RB0 — Analog input 0 |
| Chân 41 | VDD — Core logic supply (2.3V-3.6V) |
| Chân 42 | VSS — Ground reference |
| Chân 43 | SDA2/RG3 — I2C2 data line (shared with RG3) |
| Chân 44 | SCL2/RG2 — I2C2 clock line (shared with RG2) |
| Chân 45 | D-/RG1 — USB D- data line |
| Chân 46 | D+/RG0 — USB D+ data line |
| Chân 47 | VUSB — USB transceiver supply (3.3V typical) |
| Chân 48 | RPD0/RE8 — Remappable I/O |
| Chân 49 | RPD1/RE9 — Remappable I/O |
| Chân 50 | RPD2/RE0 — Remappable I/O |
| Chân 51 | RPD3/RE1 — Remappable I/O |
| Chân 52 | RPD4/RE2 — Remappable I/O |
| Chân 53 | RPD5/RE3 — Remappable I/O |
| Chân 54 | RPD6/RE4 — Remappable I/O |
| Chân 55 | RPD7/RE5 — Remappable I/O |
| Chân 56 | VSS — Ground reference |
| Chân 57 | VDD — Core logic supply (2.3V-3.6V) |
| Chân 58 | RD15 — Parallel master port data bit |
| Chân 59 | RD14 — Parallel master port data bit |
| Chân 60 | RD13 — Parallel master port data bit |
| Chân 61 | RD12 — Parallel master port data bit |
| Chân 62 | RD11 — Parallel master port data bit |
| Chân 63 | RD10 — Parallel master port data bit |
| Chân 64 | RD9 — Parallel master port data bit |
Ứng dụng tiêu biểu
PIC32MX340F256H-80V/MR phù hợp cho 6 Áp dụngs: Industrial Control Panels, USB Peripherals and HID Devices, Portable Medical Instrumentation, Consumer Audio Equipment, Embedded HMI / Graphical Displays, Data Acquisition Modules.
Industrial Control Panels
The PIC32MX340F256H-80V/MR suits industrial control panels thanks to its 53 GPIO, 16-channel 10-bit ADC, and -40C to +105C operation. The 256 KB Flash holds full Modbus, CANopen, or USB-CDC stacks alongside HMI logic, while the DMA engine drives TFT or character LCD updates without CPU stalls. The 80 MHz MIPS M4K core executes control loops in well under 1 ms, and the integrated USB port enables diagnostics uploads and firmware updates from a host PC.
Được đề xuất
USB Peripherals and HID Devices
The PIC32MX340F256H-80V/MR's integrated USB 2.0 full-speed device/host/OTG controller is the centerpiece of HID, CDC, and MSD peripherals. The 80 MHz MIPS M4K core executes Microchip's free USB stack comfortably, while 256 KB Flash holds class drivers plus application logic. The 32 KB SRAM accommodates USB endpoint buffers plus protocol stacks, and DMA transfers endpoint data to RAM without CPU intervention, ensuring deterministic USB interrupt latency.
Được đề xuất
Portable Medical Instrumentation
The PIC32MX340F256H-80V/MR fits portable medical devices such as glucose meters, pulse oximeters, and handheld diagnostic tools. The 10-bit ADC with 16 input channels handles sensor readout (temperature, optical, impedance), while the DMA engine streams samples to RAM for DSP-based filtering. The 2.3-3.6 V operating range allows direct Li-Ion battery power, and the 64-VQFN exposed pad supports compact PCB layouts typical of wearable medical form factors.
Được đề xuất
Consumer Audio Equipment
The PIC32MX340F256H-80V/MR's 80 MHz MIPS M4K core runs audio decoders, USB audio class drivers, and small DSP routines, making it well-suited for USB speakers, headphone amplifiers, and DJ controllers. The 256 KB Flash stores USB Audio class firmware plus user interface logic, while DMA feeds I2S or SPI to external DACs without CPU load. Its 53 GPIO handle buttons, encoders, and LED rings typical of consumer audio front panels.
Được đề xuất
Embedded HMI / Graphical Displays
The PIC32MX340F256H-80V/MR drives small TFT and OLED HMI displays through its parallel master port (PMP) and SPI interfaces. At 80 MHz, it refreshes QVGA (320x240) panels at acceptable frame rates while running control logic concurrently. DMA streams display buffer updates from Flash to PMP peripheral, freeing the CPU for touch input handling and animation rendering. The 53 GPIO accommodate touch controller, backlight PWM, and user buttons.
Được đề xuất
Data Acquisition Modules
The PIC32MX340F256H-80V/MR serves as the controller in USB-based data acquisition modules, with its 16-channel 10-bit ADC sampling at 500 ksps and DMA streaming samples to RAM. The integrated USB FS port streams captured data to a host PC, while 256 KB Flash holds firmware plus calibration tables. The 32 KB SRAM buffers multi-channel waveform captures, and the 80 MHz MIPS M4K core performs on-the-fly scaling and digital filtering before USB transmission.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX340F256H-80V/MR — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC32MX340F256HT-80V/MR | PIC32MX340F256H-80I/MR | PIC32MX340F256H-80V/PT | PIC32MX450F256H-80V/MR |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-VQFN (9x9 mm) | 64-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same | 64-TQFP (10x10 mm) - different | 64-VQFN (9x9 mm) - same |
| Maximum CPU Speed | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| RAM Size | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| USB Version | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Full-Speed OTG | USB 2.0 Hi-Speed OTG (upgrade) |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +85C (narrower) | -40C to +105C | -40C to +105C |
| GPIO Count | 53 | 53 | 53 | 53 | 53 |
Bảo phân biệt quan trọng
- Highest temperature grade in the same MR footprint (vsPIC32MX340F256H-80I/MR)
- Compact 9x9 mm VQFN with exposed thermal pad (vsPIC32MX340F256H-80V/PT (64-TQFP))
- Drop-in upgrade path to Hi-Speed USB (vsPIC32MX450F256H-80V/MR)
Ghi chú thiết kế
Place 0.1 uF and 1 uF ceramic decoupling capacitors as close as possible to every VDD/VSS pin pair. For USB operation, add a 10 uF bulk capacitor near the VUSB pin and follow Microchip's USB hardware design guide for proper rail sequencing. Avoid sharing analog and digital supply traces.
The 64-VQFN (9x9 mm) exposed pad must be soldered to a continuous ground plane with thermal vias (typically a 3x3 array of 0.3 mm vias) for both electrical grounding and heat dissipation. This reduces junction-to-ambient thermal resistance from ~40 C/W to under 25 C/W in typical PCB layouts, which is essential when USB and ADC operate continuously.
Route the 90-ohm differential USB pair (D+ / D-) with controlled impedance and matched length within 150 mil. Keep USB traces away from switching nodes and clock oscillators. Place the 27-ohm series termination resistors on D+/D- as close to the MCU pins as possible to suppress reflections.
Do not leave unused GPIO pins floating - configure them as outputs or enable the internal weak pull-ups via firmware. Failure to do so can cause excessive current draw in sleep modes and unpredictable behavior. Also, always configure the JTAG/Trace pins (TMS, TCK, TDI, TDO) to alternate function before debugging to avoid conflicts.
Thông tin tuân thủ
RoHS and REACH compliance confirmed by Microchip product page; not AEC-Q100 qualified (use PIC32MX automotive variants for that).
