PIC32MX340F512H-80I/MR - 32-bit MCU, 512KB Flash, 80MHz | Microchip
料号： PIC32MX340F512H-80I/MR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $10.39 | $10.39 |
| 10 | $9.35 | $93.50 |
| 100 | $8.1 | $810.00 |
| 500 | $7.25 | $3,625.00 |
| 1,000 | $6.55 | $6,550.00 |
PIC32MX340F512H-80I/MR 概述
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.
直接替换替代料： PIC32MX340F512H-80I/MR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC32MX340F512H-80I/MR （相同外形与封装尺寸） ——差异在于 ADC, Package, DMA Channels, Core Architecture, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
PIC32MX340F512H-80I/PT
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX340F512HT-80I/MR
✅ 直接替换✓ 有现货
$4.36 / 个
查看数据手册 →PIC32MX340F512H-80V/MR
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.03 / 个
查看数据手册 →PIC32MX340F512H-80I/MR
✅ 直接替换✓ 有现货
$6.55 / 个
查看数据手册 →PIC32MX360F512L-80I/MR
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC32MX440F512H-80I/MR
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.45 / 个
查看数据手册 →PIC32MX340F512H-80I/MR 最大额定值与电气特性
| 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 |
| 工作温度 | -40 C to +85 C (Industrial, 'I') |
| 封装 | 64-pin VQFN (9x9 mm) with exposed pad |
| 引脚数量 | 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 |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant (LEAD FREE per datasheet) |
PIC32MX340F512H-80I/MR 引脚配置
| 引脚 1 | RP15/PMA0/CN11/RB15 — Remappable I/O, parallel master port address bit |
| 引脚 2 | VSS — Ground reference |
| 引脚 3 | VDD — Positive supply (2.5V-3.6V) |
| 引脚 4 | RP14/PMA1/CN10/RB14 — Remappable I/O, PMP address |
| 引脚 5 | RP13/PMA2/CN9/RB13 — Remappable I/O, PMP address |
| 引脚 6 | RP12/PMA3/CN8/RB12 — Remappable I/O, PMP address |
| 引脚 7 | RP11/PMA4/CN7/RB11 — Remappable I/O, PMP address |
| 引脚 8 | RP10/PMA5/CN6/RB10 — Remappable I/O, PMP address |
| 引脚 9 | RP9/PMA6/CN5/RB9 — Remappable I/O, PMP address |
| 引脚 10 | RP8/PMA7/CN4/RB8 — Remappable I/O, PMP address |
| 引脚 11 | RP7/PMD7/CN3/RB7 — Remappable I/O, PMP data |
| 引脚 12 | RP6/PMD6/PMCS2/CN2/RB6 — Remappable I/O, PMP data/PCS |
| 引脚 13 | RP5/PMD5/PMCS1/RB5 — Remappable I/O, PMP data/PCS |
| 引脚 14 | RP4/PMD4/RB4 — Remappable I/O, PMP data |
| 引脚 15 | RP3/PMD3/RB3 — Remappable I/O, PMP data |
| 引脚 16 | RP2/PMD2/PMCS0/RB2 — Remappable I/O, PMP data/PCS |
| 引脚 17 | RP1/PMD1/RB1 — Remappable I/O, PMP data |
| 引脚 18 | RP0/PMD0/RB0 — Remappable I/O, PMP data |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | VDD — Positive supply |
| 引脚 21 | RA15 — General purpose I/O |
| 引脚 22 | RA14 — General purpose I/O |
| 引脚 23 | RA13 — General purpose I/O |
| 引脚 24 | RA12 — General purpose I/O |
| 引脚 25 | RA11 — General purpose I/O |
| 引脚 26 | RA10 — General purpose I/O |
| 引脚 27 | RA9 — General purpose I/O |
| 引脚 28 | RA8 — General purpose I/O |
| 引脚 29 | RB15 — General purpose I/O |
| 引脚 30 | RB14 — General purpose I/O |
| 引脚 31 | RB13 — General purpose I/O |
| 引脚 32 | RB12 — General purpose I/O |
| 引脚 33 | RB11 — General purpose I/O |
| 引脚 34 | RB10 — General purpose I/O |
| 引脚 35 | RB9 — General purpose I/O |
| 引脚 36 | RB8 — General purpose I/O |
| 引脚 37 | RB7 — General purpose I/O |
| 引脚 38 | RB6 — General purpose I/O |
| 引脚 39 | RB5 — General purpose I/O |
| 引脚 40 | RB4 — General purpose I/O |
| 引脚 41 | RB3 — General purpose I/O |
| 引脚 42 | RB2 — General purpose I/O |
| 引脚 43 | RB1 — General purpose I/O |
| 引脚 44 | RB0 — General purpose I/O |
| 引脚 45 | VSS — Ground reference |
| 引脚 46 | VDD — Positive supply |
| 引脚 47 | RC15 — General purpose I/O |
| 引脚 48 | RC14 — General purpose I/O |
| 引脚 49 | RC13 — General purpose I/O |
| 引脚 50 | RC12 — General purpose I/O |
| 引脚 51 | RC11 — General purpose I/O |
| 引脚 52 | RC10 — General purpose I/O |
| 引脚 53 | RC9 — General purpose I/O |
| 引脚 54 | RC8 — General purpose I/O |
| 引脚 55 | RC7 — General purpose I/O |
| 引脚 56 | RC6 — General purpose I/O |
| 引脚 57 | RC5 — General purpose I/O |
| 引脚 58 | RC4 — General purpose I/O |
| 引脚 59 | RC3 — General purpose I/O |
| 引脚 60 | RC2 — General purpose I/O |
| 引脚 61 | RC1 — General purpose I/O |
| 引脚 62 | RC0 — General purpose I/O |
| 引脚 63 | VSS — Ground (exposed pad) |
| 引脚 64 | VDD — Positive supply (exposed pad) |
典型应用
PIC32MX340F512H-80I/MR 适用于 6 应用s: 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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
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.
推荐
推荐产品汇总
工程参考数据： PIC32MX340F512H-80I/MR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | 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 |
关键差异点
- Integrated USB 2.0 OTG with on-chip transceiver （对比 PIC32MX360F512L-80I/MR)
- VQFN-64 package reduces PCB area vs TQFP-64 （对比 PIC32MX340F512H-80I/PT)
- Larger Flash and SRAM than smaller PIC32MX siblings （对比 PIC32MX320F064H)
设计说明
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.
合规信息
RoHS compliant, lead-free per Microchip datasheet 61143H package marking. Not AEC-Q100 qualified - choose 'E' (extended) or 'V' automotive variants for automotive applications.
