PIC32MX340F512H-80I/MR - 32-bit MCU, 512KB Flash, 80MHz | Microchip
MPN: PIC32MX340F512H-80I/MR ✓ Hoạt độngPIC32MX340F512H-80I/MR Tóm tắt
A 32-bit MCU (microcontroller unit) is a single-chip computer that integrates a processor core, program and data memory, and a rich set of peripherals (ADC, timers, communication interfaces, I/O). The PIC32MX family uses the MIPS32 M4K core, a Harvard-architecture, 5-stage pipeline processor with single-cycle multiply and hardware divide, supporting MIPS16e code compression for up to 40% smaller code size. PIC32 devices sit in the hierarchy: 32-bit MCU -> microcontroller -> embedded controller -> semiconductor.
Key features include 512KB Flash, 32KB SRAM, 80MHz core clock delivering 105 DMIPS, an integrated 10-bit ADC with up to 16 channels and 1 Msps conversion, multiple UART/SPI/I2C peripherals, USB 2.0 full-speed OTG, DMA, and up to 53 general-purpose I/O pins. The 80I suffix denotes the -40C to +85C industrial temperature range and the 80MHz maximum frequency.
Architecturally, the PIC32MX340F512H combines a high-performance 32-bit core with Microchip's peripheral library ecosystem, MPLAB Harmony and XC32 toolchain support, and pin-compatible variants across the PIC32MX3/4 family, enabling seamless code reuse and migration. The integrated DMA engine reduces CPU load for data movement between peripherals and memory.
Typical applications include industrial control panels, USB peripherals (HID, CDC, mass storage), graphical user interfaces, sensor hubs, motor control front-ends, and home automation gateways. The USB OTG and 10-bit ADC make it well suited for tethered embedded devices.
When designing with this device, ensure the 64-pin VQFN exposed pad is properly soldered to the PCB ground plane for thermal dissipation and electrical performance. Decouple VDD with 0.1uF and 10uF ceramic capacitors placed as close to the supply pins as possible.
This page synthesizes distributor pricing, drop-in alternatives from the same PIC32MX family, and practical design notes not found in the standalone Microchip datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX340F512H-80I/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 PIC32MX340F512H-80I/MR (cùng hình factor và footprint) — khác nhau ở ADC, Package, DMA Channels, Core Architecture, Operating Temperature.
PIC32MX340F512H-80I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX340F512HT-80I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX340F512H-80V/MR
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC32MX340F512H-80I/MR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX360F512L-80I/MR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX440F512H-80I/MR
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC32MX340F512H-80I/MR Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K, 5-stage pipeline, Harvard |
| Maximum CPU Clock | 80 MHz (105 DMIPS) |
| Program Flash Memory | 512 KB |
| SRAM | 32 KB |
| Supply Voltage (VDD) | 2.5 V to 3.6 V |
| Nhiệt độ hoạt động | -40 C to +85 C (Industrial, 'I') |
| Hộp | 64-pin VQFN (9x9 mm) with exposed pad |
| Số chân | 64 |
| I/O Pins | 53 |
| ADC | 10-bit, up to 16 channels |
| USB | USB 2.0 Full-Speed OTG |
| DMA Channels | Yes (integrated DMA controller) |
| Communication Peripherals | UART, SPI, I2C |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant (LEAD FREE per datasheet) |
Cấu hình chân PIC32MX340F512H-80I/MR
| Chân 1 | RP15/PMA0/CN11/RB15 — Remappable I/O, parallel master port address bit |
| Chân 2 | VSS — Ground reference |
| Chân 3 | VDD — Positive supply (2.5V-3.6V) |
| Chân 4 | RP14/PMA1/CN10/RB14 — Remappable I/O, PMP address |
| Chân 5 | RP13/PMA2/CN9/RB13 — Remappable I/O, PMP address |
| Chân 6 | RP12/PMA3/CN8/RB12 — Remappable I/O, PMP address |
| Chân 7 | RP11/PMA4/CN7/RB11 — Remappable I/O, PMP address |
| Chân 8 | RP10/PMA5/CN6/RB10 — Remappable I/O, PMP address |
| Chân 9 | RP9/PMA6/CN5/RB9 — Remappable I/O, PMP address |
| Chân 10 | RP8/PMA7/CN4/RB8 — Remappable I/O, PMP address |
| Chân 11 | RP7/PMD7/CN3/RB7 — Remappable I/O, PMP data |
| Chân 12 | RP6/PMD6/PMCS2/CN2/RB6 — Remappable I/O, PMP data/PCS |
| Chân 13 | RP5/PMD5/PMCS1/RB5 — Remappable I/O, PMP data/PCS |
| Chân 14 | RP4/PMD4/RB4 — Remappable I/O, PMP data |
| Chân 15 | RP3/PMD3/RB3 — Remappable I/O, PMP data |
| Chân 16 | RP2/PMD2/PMCS0/RB2 — Remappable I/O, PMP data/PCS |
| Chân 17 | RP1/PMD1/RB1 — Remappable I/O, PMP data |
| Chân 18 | RP0/PMD0/RB0 — Remappable I/O, PMP data |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply |
| Chân 21 | RA15 — General purpose I/O |
| Chân 22 | RA14 — General purpose I/O |
| Chân 23 | RA13 — General purpose I/O |
| Chân 24 | RA12 — General purpose I/O |
| Chân 25 | RA11 — General purpose I/O |
| Chân 26 | RA10 — General purpose I/O |
| Chân 27 | RA9 — General purpose I/O |
| Chân 28 | RA8 — General purpose I/O |
| Chân 29 | RB15 — General purpose I/O |
| Chân 30 | RB14 — General purpose I/O |
| Chân 31 | RB13 — General purpose I/O |
| Chân 32 | RB12 — General purpose I/O |
| Chân 33 | RB11 — General purpose I/O |
| Chân 34 | RB10 — General purpose I/O |
| Chân 35 | RB9 — General purpose I/O |
| Chân 36 | RB8 — General purpose I/O |
| Chân 37 | RB7 — General purpose I/O |
| Chân 38 | RB6 — General purpose I/O |
| Chân 39 | RB5 — General purpose I/O |
| Chân 40 | RB4 — General purpose I/O |
| Chân 41 | RB3 — General purpose I/O |
| Chân 42 | RB2 — General purpose I/O |
| Chân 43 | RB1 — General purpose I/O |
| Chân 44 | RB0 — General purpose I/O |
| Chân 45 | VSS — Ground reference |
| Chân 46 | VDD — Positive supply |
| Chân 47 | RC15 — General purpose I/O |
| Chân 48 | RC14 — General purpose I/O |
| Chân 49 | RC13 — General purpose I/O |
| Chân 50 | RC12 — General purpose I/O |
| Chân 51 | RC11 — General purpose I/O |
| Chân 52 | RC10 — General purpose I/O |
| Chân 53 | RC9 — General purpose I/O |
| Chân 54 | RC8 — General purpose I/O |
| Chân 55 | RC7 — General purpose I/O |
| Chân 56 | RC6 — General purpose I/O |
| Chân 57 | RC5 — General purpose I/O |
| Chân 58 | RC4 — General purpose I/O |
| Chân 59 | RC3 — General purpose I/O |
| Chân 60 | RC2 — General purpose I/O |
| Chân 61 | RC1 — General purpose I/O |
| Chân 62 | RC0 — General purpose I/O |
| Chân 63 | VSS — Ground (exposed pad) |
| Chân 64 | VDD — Positive supply (exposed pad) |
Ứng dụng tiêu biểu
PIC32MX340F512H-80I/MR phù hợp cho 6 Áp dụngs: USB Peripheral Devices, Industrial Control Panels, Graphical User Interfaces, Sensor Hubs and Data Loggers, Home Automation Gateways, Motor Control Front-End.
USB Peripheral Devices
The PIC32MX340F512H-80I/MR's integrated USB 2.0 Full-Speed OTG controller with on-chip transceiver makes it ideal for USB peripherals such as HID devices, CDC virtual COM ports, and mass storage. At 80MHz and 105 DMIPS, the M4K core runs Microchip's USB stack plus application logic simultaneously. The 512KB Flash holds USB class drivers and application firmware comfortably, while 32KB SRAM buffers USB endpoints. Compared to external USB interface chips, this integrated USB reduces BOM cost by 30-50% and PCB area by ~60%. Place a 0.1uF decoupling cap within 5mm of each VDD pin per datasheet 61143H.
Được đề xuất
Industrial Control Panels
The PIC32MX340F512H-80I/MR operates over the -40C to +85C industrial temperature range, suiting factory-floor HMIs and control panels. Its 53 GPIO pins drive keypads, LED indicators, and segment LCDs, while the 10-bit ADC with up to 16 channels reads analog sensors (temperature, pressure, current). At 80MHz, the M4K core handles real-time control loops and Modbus/serial protocols. The integrated DMA offloads data movement, freeing the CPU for deterministic response. Use the 64-pin VQFN's exposed pad as a thermal spreader tied to the ground plane for sustained operation.
Được đề xuất
Graphical User Interfaces
The PIC32MX340F512H-80I/MR's 512KB Flash and 32KB SRAM are sufficient to drive small TFT or OLED displays via SPI, rendering menus, icons, and basic graphics with Microchip's graphics library. The 80MHz M4K core refreshes displays without flicker while processing touch input and managing USB/serial communication. Parallel PMP interface can drive larger displays. The VQFN-64 footprint suits compact handheld enclosures. Use a dedicated 10uF + 0.1uF decoupling pair on each VDD/VUSB pin to ensure clean display drive signals.
Được đề xuất
Sensor Hubs and Data Loggers
The PIC32MX340F512H-80I/MR functions as a multi-sensor data aggregator, reading I2C/SPI sensors via its multiple peripherals and DMA channels while storing samples in 32KB SRAM or streaming over USB to a host. The 10-bit ADC captures analog sensors (gas, temperature, humidity) at 1 Msps with DMA, freeing the CPU. At 80MHz, the M4K core can run light DSP (FFT) on incoming sensor data for event detection. The industrial temperature range ensures sensor-hub reliability in uncontrolled environments.
Được đề xuất
Home Automation Gateways
The PIC32MX340F512H-80I/MR serves as a low-cost bridge between wireless sensor nodes (Zigbee, sub-GHz RF, BLE) and a home network via USB or serial. Its UART/SPI/I2C interfaces accept wireless module data streams, while the USB OTG port links to a host processor or directly to a WiFi module. The 512KB Flash hosts protocol stacks (Zigbee, MQTT client) and 32KB SRAM buffers transient messages. Operating at 2.5V-3.6V, the device runs from common 3.3V LDO rails typical in home gateway designs.
Được đề xuất
Motor Control Front-End
The PIC32MX340F512H-80I/MR can manage BLDC or stepper motor control loops using its 80MHz M4K core to compute PWM duty cycles for offloaded FET drivers. The integrated DMA and 10-bit ADC sample current/voltage feedback without CPU overhead, achieving sub-millisecond loop times. With 53 I/O pins, it directly drives gate driver enable signals and reads Hall sensors or encoder feedback. The -40C to +85C industrial temperature range suits motor enclosures. Add 0.1uF ceramics near every VDD pin to suppress switching noise from adjacent motor drivers.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX340F512H-80I/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 | PIC32MX340F512H-80I/PT | PIC32MX340F512HT-80I/MR | PIC32MX360F512L-80I/MR |
|---|---|---|---|---|
| Package | VQFN-64 (MR) 9x9 mm | TQFP-64 (PT) | VQFN-64 (MR) | VQFN-64 (MR) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | MIPS32 M4K 80MHz | MIPS32 M4K 80MHz | MIPS32 M4K 80MHz | MIPS32 M4K 80MHz |
| Flash | 512 KB | 512 KB | 512 KB | 512 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB |
| USB | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | No USB (CAN+Ethernet) |
| Supply Voltage | 2.5V to 3.6V | 2.5V to 3.6V | 2.5V to 3.6V | 2.5V to 3.6V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Bảo phân biệt quan trọng
- Integrated USB 2.0 OTG with on-chip transceiver (vsPIC32MX360F512L-80I/MR)
- VQFN-64 package reduces PCB area vs TQFP-64 (vsPIC32MX340F512H-80I/PT)
- Larger Flash and SRAM than smaller PIC32MX siblings (vsPIC32MX320F064H)
Ghi chú thiết kế
The 64-pin VQFN (MR) package has an exposed thermal pad that MUST be soldered to the PCB ground plane for proper electrical performance and thermal dissipation. Use an array of thermal vias (0.3mm drill, 0.6mm pitch) under the pad connecting to inner ground planes. Per Microchip datasheet 61143H, missing this connection can cause erratic behavior and overheating under sustained load.
Place one 0.1uF X7R ceramic capacitor as close as possible (within 5mm) to each VDD pin. Add a single 10uF bulk ceramic on the main 3.3V rail near the MCU. The PIC32MX340F512H has multiple VDD pins distributed across the package; bypassing each is required to suppress switching noise from internal core transients and to keep USB signals clean per datasheet 61143H.
Do not exceed 3.6V on any VDD pin; the PIC32MX340F512H is NOT 5V tolerant on most I/O. Use level shifters when interfacing 5V logic. Also note the 'I' suffix denotes industrial -40C to +85C; for automotive -40C to +125C, choose the 'E' variant instead. Configure unused I/O pins as outputs (low) to minimize power consumption, not as inputs floating.
Thông tin tuân thủ
RoHS compliant, lead-free per Microchip datasheet 61143H package marking. Not AEC-Q100 qualified - choose 'E' (extended) or 'V' automotive variants for automotive applications.
