PIC32MX440F256HT-80I/MR - 32-bit 80MHz MCU 256KB Flash | Microchip
부품 번호: PIC32MX440F256HT-80I/MR ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $7.2 | $7.20 |
| 10 | $6.48 | $64.80 |
| 100 | $5.76 | $576.00 |
| 500 | $5.18 | $2,590.00 |
| 1,000 | $4.61 | $4,610.00 |
PIC32MX440F256HT-80I/MR 개요
A microcontroller (MCU) is a single-chip computer containing a processor core, program and data memory, I/O peripherals, and often specialized interfaces. PIC32MX parts sit in the hierarchy of microcontrollers -> 32-bit MCUs -> MIPS-based MCUs -> embedded controllers, bridging 8/16-bit PIC and high-performance Cortex-M applications. They are widely used where deterministic real-time performance, USB connectivity, and Microchip's MPLAB X toolchain support are required.
Key features of this part include 256 KB Flash (256K x 8), 32 KB SRAM, a 10-bit 16-channel 1 Msps ADC, two I2C, two SPI, two UART, USB-OTG full-speed controller, an 8-bit Parallel Master Port (PMP), five 16-bit timers/counters, DMA controller with 8 channels, and an RTCC module. The 80 MHz core provides 80 MIPS of processing throughput, sufficient for USB stacks, graphics drivers, and protocol conversion.
The PIC32MX4XX family uses a 5-stage pipeline MIPS32 M4K core with hardware multiply/divide and DSP extensions. The dual-bus architecture (instruction fetch and data on separate buses) increases throughput for pointer-heavy code. The peripheral pin-select feature remappable I/O functions to multiple pins, simplifying PCB layout when a constraint conflicts with a default pin assignment.
Typical applications include USB peripherals (HID, CDC, vendor class), industrial control panels with graphic LCDs, sensor hubs bridging SPI/UART modbus, audio controllers with PWM output, motor control with quadrature encoders, and general-purpose embedded platforms where 256 KB code space and USB host/device are required.
When designing, ensure the USB pins route as a 90-ohm differential pair and that the 64-pin VQFN ground pad is soldered to a continuous ground plane for thermal dissipation. Pull-up resistors on I2C/SDA lines must be sized for the bus capacitance to meet USB-OTG signal-integrity margins.
This page synthesizes distributor pricing, drop-in PIC32MX alternatives, and practical design notes not found in the manufacturer datasheet.
드롭인 대체품: PIC32MX440F256HT-80I/MR — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: PIC32MX440F256HT-80I/MR (동일 폼 팩터 및 풋프린트) — 차이점: Package, ADC, Core Architecture, DMA Channels, Program Memory (Flash).
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
PIC32MX440F256H-80I/MR
✅ 드롭인✓ 재고 있음
$5.35 / 개
데이터시트 보기 →PIC32MX340F256HT-80I/MR
✅ 드롭인✓ 재고 있음
$5.42 / 개
데이터시트 보기 →PIC32MX440F256HT-80V/MR
✅ 드롭인✓ 재고 있음
$2.4 / 개
데이터시트 보기 →PIC32MX440F128HT-80I/MR
✅ 드롭인✓ 재고 있음
$4.3 / 개
데이터시트 보기 →PIC32MX440F256HT-80I/MR 최대 정격 & 전기적 특성
| Core | MIPS32 M4K 32-bit |
| Maximum Clock Speed | 80 MHz |
| MIPS Performance | 80 MIPS |
| Program Memory (Flash) | 256 KB (256K x 8) |
| Data Memory (SRAM) | 32 KB |
| ADC | 10-bit, 16-channel, 1 Msps |
| USB | USB 2.0 Full-Speed OTG |
| DMA Channels | 8 |
| Timers | Five 16-bit Timer/Counter modules |
| Communication Interfaces | 2x UART, 2x SPI, 2x I2C, PMP |
| Operating Voltage | 2.3 V to 3.6 V |
| 동작 온도 | -40C to +85C (Industrial) |
| 패키지 | 64-pin VQFN (9x9 mm) |
| 실장 유형 | Surface Mount |
| RoHS 상태 | Compliant |
PIC32MX440F256HT-80I/MR 64-pin vqfn (9x9 mm) 핀 구성 가이드
PIC32MX440F256HT-80I/MR(64-pin vqfn (9x9 mm) 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: PIC32MX440F256HT-80I/MR.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
PIC32MX440F256HT-80I/MR 적합 용도: 6 애플리케이션s: USB HID / CDC Peripheral, Industrial Sensor Hub, Motor Control with Quadrature Encoder, Audio Controller with PWM Output, Graphic LCD HMI Controller, Data Logger with USB Mass Storage.
USB HID / CDC Peripheral
The PIC32MX440F256HT-80I/MR's integrated USB 2.0 Full-Speed OTG controller and 80 MIPS M4K core make it a strong fit for USB HID, CDC (virtual COM), and vendor-class peripherals. With 256 KB Flash, the MCU can host a full USB stack plus class driver and application code in a single chip, eliminating the need for an external PHY. The integrated 3.3V regulator simplifies bus-powered designs. Compared to bit-banged USB implementations on smaller MCUs, the PIC32MX hardware USB engine frees CPU cycles for protocol processing while DMA offloads endpoint buffer transfers. The 64-pin VQFN (9x9) package exposes all required USB D+/D- pins with adequate ground shielding for EMI compliance.
추천
Industrial Sensor Hub
The PIC32MX440F256HT-80I/MR suits multi-protocol sensor hubs with its dual I2C, dual SPI, and dual UART buses for Modbus RTU, SPI sensors, and I2C peripherals simultaneously. The 16-channel 10-bit ADC handles up to 16 analog sensor inputs at 1 Msps aggregate, while 8-channel DMA offloads continuous conversion sequences without CPU intervention. Industrial temperature grade (-40C to +85C) supports outdoor and factory deployments. The 256 KB Flash accommodates sensor calibration tables, Modbus mapping, and OTA bootloader, while 32 KB SRAM provides buffering for aggregated telemetry streams. Compared to discrete logic-based hubs, the integrated peripherals reduce BOM and PCB area in the compact 9x9 mm VQFN.
추천
Motor Control with Quadrature Encoder
The PIC32MX440F256HT-80I/MR drives closed-loop motor control with five 16-bit timers for PWM generation and quadrature encoder input capture. The 80 MIPS throughput enables field-oriented control (FOC) at moderate PWM rates (10-20 kHz) for BLDC and stepper motors. DMA channels offload encoder counting from CPU, preserving bandwidth for velocity/torque loops. The PMP (Parallel Master Port) interfaces to external graphic LCD or keypad for HMI integration. Compared to entry-level PIC MCUs lacking the timer density, the PIC32MX provides dedicated PWM with dead-band generators and fault inputs, critical for safe motor commutation.
추천
Audio Controller with PWM Output
The PIC32MX440F256HT-80I/MR serves as a low-cost audio playback controller with PWM-driven Class-D amplification or DAC output via the PMP. The 80 MIPS core handles WAV/ADPCM decoding and sample-rate conversion in real time, while DMA streams decoded samples to the output peripheral without CPU intervention. USB-OTG enables mass-storage audio file loading directly from a USB flash drive. The 256 KB Flash holds compressed audio assets and decoding tables, while 32 KB SRAM provides buffering for sample-rate conversion and reverb/effects processing. Compared to dedicated DSPs, this PIC32 variant offers lower BOM cost when processing demands are modest.
추천
Graphic LCD HMI Controller
The PIC32MX440F256HT-80I/MR drives 320x240 QVGA or smaller TFT LCDs through the 8-bit Parallel Master Port (PMP) at sufficient speed for 30+ fps refresh. The 80 MIPS core renders fonts, menus, and simple graphics using stored bitmaps, while DMA channels refresh the LCD without CPU loading. USB-OTG enables touch-panel firmware updates from USB mass storage. Industrial temperature grade supports factory-floor HMIs in unconditioned enclosures. Compared to character-only LCD MCUs, the integrated PMP and DMA unlock graphical interfaces without an external LCD controller, reducing BOM.
추천
Data Logger with USB Mass Storage
The PIC32MX440F256HT-80I/MR builds a low-cost USB data logger with the integrated USB-OTG controller emulating a USB flash drive, recording sensor or process data to an external SPI Flash or SD card via PMP/SPI. The 256 KB Flash stores FAT file-system drivers and logging firmware; 32 KB SRAM buffers write transactions. The 10-bit ADC samples analog signals at 1 Msps aggregate, with DMA offloading continuous captures. The 64-pin VQFN package fits compact handheld logger form factors. Compared to USB-controller-plus-MCU designs, the single-chip integration simplifies PCB layout and reduces total cost.
추천
추천 제품 요약
엔지니어링 참조 데이터: PIC32MX440F256HT-80I/MR — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | PIC32MX440F256H-80I/MR | PIC32MX340F256HT-80I/MR | PIC32MX440F256HT-80V/MR | PIC32MX440F128HT-80I/MR |
|---|---|---|---|---|---|
| Package | 64-pin VQFN (9x9) | 64-pin VQFN (9x9) - same | 64-pin VQFN (9x9) - same | 64-pin VQFN (9x9) - same | 64-pin VQFN (9x9) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K | MIPS32 M4K |
| Maximum Clock | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 128 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| USB | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG | USB 2.0 FS OTG |
| ADC | 10-bit, 1 Msps | 10-bit, 1 Msps | 10-bit, reduced channels | 10-bit, 1 Msps | 10-bit, 1 Msps |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +105C (Extended) | -40C to +85C (Industrial) |
주요 차별점
- Same package, lower-cost when memory is sufficient (vs PIC32MX440F128HT-80I/MR)
- Higher temperature grade available (vs PIC32MX440F256HT-80V/MR)
- MX440 vs MX340: enhanced ADC and DMA (vs PIC32MX340F256HT-80I/MR)
- Tape-and-reel packaging variant (vs PIC32MX440F256H-80I/MR)
설계 노트
The 64-pin VQFN (9x9 mm) package has an exposed thermal pad (EP) that MUST be soldered to a continuous PCB ground plane to meet thermal and electrical specifications. Place multiple thermal vias (8-12, 0.3 mm drill) directly under the EP connecting top copper to inner ground planes. Without proper EP soldering, junction temperature can exceed limits at 80 MHz full-load operation.
USB D+ and D- traces MUST be routed as a 90-ohm differential pair with continuous ground reference on the layer immediately below. Per the USB 2.0 specification, maximum trace length is 50 mm with matched length within 0.15 mm. Place the 15 kohm pull-down on D+ and 1.5 kohm pull-up on D- (for device mode) within 5 mm of the MCU pins.
The PIC32MX440F256HT-80I/MR operates from a single 2.3V-3.6V rail. Use a low-noise LDO (e.g. MCP1700) for the AVDD pin to maximize ADC accuracy; separate analog and digital ground planes joined at a single point near the MCU ground pin. Add 100 nF decoupling capacitors adjacent to every VDD/VSS pin pair and a 4.7 uF bulk capacitor near the EP.
When using the 10-bit ADC at 1 Msps, place the analog input traces away from switching digital signals. Use a guard trace tied to analog ground around sensitive analog inputs. The ADC conversion clock (TAD) must be at least 65 ns for 10-bit mode per the family datasheet; configure the ADC clock divider accordingly.
The peripheral pin-select (PPS) feature remaps digital functions to specific RPn pins but does NOT remap analog inputs. Analog pins are fixed at their physical package locations per the pinout table. Configuring the wrong PPS register or omitting the unlock sequence will silently disable the peripheral. Refer to the family datasheet chapter on I/O Ports before first programming.
규정 준수 정보
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C only; AEC-Q100 automotive variants (PIC32MX440F256HT-V/MR family) require separate qualification review.
