PIC32MX440F512H-80I/MR - 80MHz 32-bit MCU 512KB Flash USB-OTG | Microchip
料号： PIC32MX440F512H-80I/MR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.5 | $8.50 |
| 10 | $7.65 | $76.50 |
| 100 | $6.8 | $680.00 |
| 500 | $6.1 | $3,050.00 |
| 1,000 | $5.45 | $5,450.00 |
PIC32MX440F512H-80I/MR 概述
A microcontroller (MCU) is a self-contained processor that integrates CPU, memory, and programmable I/O on a single die, sitting at the lowest level of embedded compute hierarchy (CPU -> MCU -> SoC -> MPU). The PIC32MX4xx family targets general-purpose and USB-connected applications where deterministic real-time control, low BOM cost, and ready USB integration outweigh the need for higher clock rates. It belongs to the broader PIC32 family of MIPS-based MCUs and slots into the larger microcontroller semiconductor category.
Key differentiating features include the integrated USB-OTG transceiver (eliminating external PHY cost), 512 KB Flash/32 KB RAM memory density at this price point, hardware DMA supporting USB transfers, and the automotive/industrial -40C to +85C operating range signalled by the -80I temperature grade. The 64-VQFN exposed-pad package provides improved thermal dissipation versus TQFP-64 variants and is suited to compact USB dongle and embedded designs.
Architecturally, the part uses a 32-bit MIPS32 M4K core with 5-stage pipeline and Harvard bus, allowing concurrent instruction fetch and data access. The USB-OTG module has a dedicated DMA channel that offloads packet handling from the CPU, freeing cycles for application logic. ICSP programming via PGECx/PGEDx pins enables in-circuit debug with the MPLAB REAL ICE or PICkit 5 toolchains.
Typical applications are USB peripherals, embedded audio interfaces, industrial control with USB diagnostics, USB mass-storage devices, and CAN/USB gateway hubs. It suits designs where 512 KB Flash is sufficient for USB stacks plus application code, and where a small QFN footprint matters more than a TQFP pin pitch.
When designing with this part, place a 0.1 uF decoupling capacitor adjacent to every VDD/VDDUSB pin and provide a 10 uF bulk capacitor on the main rail. The exposed pad must be soldered to the ground plane for thermal relief. Programming via ICSP requires short, parallel PGECx/PGEDx traces to avoid debug failures.
This page synthesizes distributor pricing from DigiKey/Mouser, drop-in alternative MPNs from Microchip's own family, and practical design notes that go beyond what the manufacturer datasheet alone provides.
直接替换替代料： PIC32MX440F512H-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： PIC32MX440F512H-80I/MR （相同外形与封装尺寸） ——差异在于 ADC, Operating Temperature, Package, Core Architecture, Timers.
快速对比工具——选择替代料号进行并排对比：
PIC32MX440F512HT-80I/MR
✅ 直接替换✓ 有现货
$6.2 / 个
查看数据手册 →PIC32MX440F256H-80I/MR
✅ 直接替换✓ 有现货
$5.35 / 个
查看数据手册 →PIC32MX440F128H-80I/MR
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX450F256H-80I/MR
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX440F512H-80V/MR
✅ 直接替换✓ 有现货
$5.75 / 个
查看数据手册 →PIC32MX440F512H-80I/MR 最大额定值与电气特性
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Clock | 80 MHz |
| Performance | 105 DMIPS (Dhrystone 2.1) |
| Pipeline Stages | 5 (Harvard architecture) |
| MIPS16e Compressed Mode | Yes (up to 40% smaller code size) |
| Program Flash | 512 KB (512K x 8) |
| SRAM | 32 KB |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| USB Peripheral | USB 2.0 On-The-Go with integrated PHY |
| I/O Pins | 53 |
| ADC | 10-bit, 1 Msps, 16 channels |
| DMA Channels | Yes (dedicated channel for USB OTG) |
| 工作温度 | -40C to +85C (Industrial grade) |
| 封装 | 64-VQFN (9x9 mm) with exposed pad |
| RoHS 状态 | Compliant |
| 安装类型 | Surface Mount |
| Hardware Multiply/Divide | 32 x 32-bit single-cycle |
| ICSP Programming | Yes (PGECx/PGEDx pins) |
PIC32MX440F512H-80I/MR 64-vqfn (9x9 mm) with exposed pad 引脚配置指南
PIC32MX440F512H-80I/MR（64-vqfn (9x9 mm) with exposed pad 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： PIC32MX440F512H-80I/MR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PIC32MX440F512H-80I/MR 适用于 7 应用s: USB HID Peripheral Devices, USB Mass Storage Devices, Industrial USB Data Loggers, USB Audio Class Devices, USB to UART/SPI/I2C Bridge, Embedded Web-Server Style Devices, USB-Connected Sensor Hubs.
USB HID Peripheral Devices
The PIC32MX440F512H-80I/MR's integrated USB 2.0 On-The-Go transceiver with dedicated DMA channel and 512 KB Flash is ideal for USB HID peripherals such as keyboards, mice, and custom input devices. The 80 MHz MIPS32 M4K core delivers 105 DMIPS, sufficient to handle USB polling at 1 ms intervals alongside HID report parsing and debounce logic. The 53 GPIO pins support matrix-scanned key grids, rotary encoders, and LED indicators without external glue logic. Using the Microchip USB stack reduces firmware development time compared to writing USB descriptors and interrupt service routines from scratch.
推荐
USB Mass Storage Devices
The PIC32MX440F512H-80I/MR can act as a USB Mass Storage Class (MSC) device when paired with an external SD card or SPI Flash, leveraging its USB-OTG peripheral and 32 KB SRAM to buffer USB bulk transfers. The 10-bit 1 Msps ADC and DMA controller offload data movement, while the 5-stage MIPS pipeline maintains deterministic response under sustained USB traffic. The 80 MHz clock rate ensures the BOT (Bulk-Only Transport) state machine meets the 1000 ms SCSI timeout during sustained read/write at USB Full Speed. This combination supports portable USB flash drives, secure tokens, and removable storage products.
推荐
Industrial USB Data Loggers
With its -40C to +85C industrial temperature range and 512 KB Flash for embedded filesystem libraries, the PIC32MX440F512H-80I/MR is well-suited to industrial USB data loggers. The 10-bit 1 Msps ADC samples analog sensor channels at high rate, while the dedicated USB DMA channel transfers log records to a host PC without interrupting ADC conversions. The 53 GPIO lines support digital inputs, relay outputs, and SPI/I2C sensor interfaces. The exposed-pad VQFN-64 package tolerates industrial thermal cycling and fits inside compact IP65 enclosures for factory-floor instrumentation.
推荐
USB Audio Class Devices
The PIC32MX440F512H-80I/MR can implement USB Audio Class 1.0 devices, with 512 KB Flash accommodating USB Audio drivers, descriptor tables, and small DSP routines, while 32 KB SRAM holds USB isochronous audio packets. The 80 MHz core handles 48 kHz / 16-bit audio streams at Full Speed USB without dropouts, and the 10-bit ADC can support auxiliary microphone sampling if needed. The DMA channel offloads USB isochronous transfers to maintain glitch-free playback. This makes the part a fit for USB speakers, headsets, and USB microphones in low-cost consumer products.
推荐
USB to UART/SPI/I2C Bridge
The PIC32MX440F512H-80I/MR serves as a USB-to-serial-bridge controller, with the on-chip USB-OTG connecting to a host PC and the integrated UART, SPI, and I2C peripherals bridging to downstream devices. The 53 GPIO supports bus-voltage level translation, and the dedicated DMA channel handles sustained USB-CDC bulk transfers without CPU intervention. The 80 MHz core runs the USB CDC stack plus bridging logic with ample headroom. This makes it ideal for development tools, factory-programming fixtures, and field-service bridges for legacy serial peripherals.
推荐
Embedded Web-Server Style Devices
While not a full Ethernet-enabled MCU, the PIC32MX440F512H-80I/MR can be paired with an external ENC28J60 Ethernet controller via SPI to implement USB-connected configurators for embedded web-server style devices. The 512 KB Flash holds TCP/IP stacks plus a small HTTP server, while the 80 MHz core processes SPI transactions to the Ethernet controller at sufficient throughput. The USB-OTG port simultaneously serves as a debug/configuration channel. This dual-bus topology is common in industrial sensor gateways that expose web UIs via Ethernet while accepting USB-based field updates.
推荐
USB-Connected Sensor Hubs
The PIC32MX440F512H-80I/MR can aggregate multiple I2C or SPI sensors and present them as a USB composite device to a host computer. The 16 ADC channels support analog sensor direct connection, while 53 GPIO drives I2C/SPI buses and chip-select lines. The dedicated DMA channel handles concurrent USB bulk transfers from multiple logical endpoints without blocking ADC sampling. The 32 KB SRAM serves as a small ring buffer for sensor data awaiting USB transmission. This makes the part a fit for lab instrumentation, multi-channel data-acquisition, and prototyping hubs.
推荐
推荐产品汇总
工程参考数据： PIC32MX440F512H-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 | PIC32MX440F512HT-80I/MR | PIC32MX440F256H-80I/MR | PIC32MX440F128H-80I/MR | PIC32MX450F256H-80I/MR | PIC32MX440F512H-80V/MR |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | 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-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same | 64-VQFN (9x9 mm) - same |
| Core Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Program Flash | 512 KB | 512 KB | 256 KB | 128 KB | 256 KB | 512 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| USB-OTG with PHY | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +105C (Extended) |
| GPIO Pins | 53 | 53 | 53 | 53 | 53 | 53 |
| ADC Resolution | 10-bit, 1 Msps | 10-bit, 1 Msps | 10-bit, 1 Msps | 10-bit, 1 Msps | 10-bit, 1 Msps | 10-bit, 1 Msps |
| Supply Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V |
关键差异点
- 512 KB Flash at this density tier （对比 PIC32MX440F256H-80I/MR)
- Industrial temperature range as standard （对比 PIC32MX440F512H-80V/MR)
- VQFN-64 with exposed pad （对比 PIC32MX440F512H-80I/PT)
- Dedicated DMA channel for USB-OTG （对比 PIC32MX440F128H-80I/MR)
设计说明
Decouple every VDD and VDDUSB pin with a 0.1 uF ceramic capacitor placed within 2 mm of the pin. Add a single 10 uF bulk capacitor on the main 3.3 V rail. For USB bus-powered designs, ensure VBUS feeds a low-dropout regulator that supplies the MCU, and add a 4.7 uF bulk capacitor on the regulator output to absorb USB inrush events.
The 64-VQFN exposed thermal pad must be soldered to a ground copper pour of at least 1 square inch to provide thermal relief and a low-impedance ground reference. The exposed pad is pin 64 on this package. Without proper soldering to the EP, junction temperature can rise 15-20C above ambient under sustained USB traffic and 80 MHz operation.
Route PGECx and PGEDx traces as short and parallel as possible, with a trace length mismatch under 5 mm. Place the ICSP connector within 50 mm of the ICSP pins. Add a 4.7 kohm pull-up on D+ and a 1 kohm series resistor on VBUS as required by the USB specification. The USB DP/DM traces must be 90 ohm differential and matched within 0.5 mm.
The USB DP and DM differential pair must be routed with 90 ohm differential impedance on the PCB. Keep DP/DM traces as short as possible (under 50 mm recommended) and isolate them from switching signals. Match the trace lengths within 0.5 mm to maintain common-mode rejection. Place the common-mode choke and ESD protection diodes within 5 mm of the USB connector.
Do not confuse the /MR suffix with /PT: /MR is VQFN-64 with exposed pad, /PT is TQFP-64 with no exposed pad. The ICSP programming pins PGEC1/PGED1 must not be repurposed as GPIO without setting configuration bits, or in-circuit debug will fail. Do not exceed 3.6 V on any VDD pin or latch-up may occur.
合规信息
RoHS compliant per Microchip product page. Lead-free VQFN-64 with exposed pad. Not AEC-Q100 qualified; industrial temp grade -40C to +85C only.
