PIC32MX420F032HT-40I/PT - 32-bit MCU 32KB Flash 40MHz TQFP-64
MPN: PIC32MX420F032HT-40I/PT ✓ نشطPIC32MX420F032HT-40I/PT نظرة عامة
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals (timers, ADC, communication ports, I/O). The PIC32MX family combines 32-bit MIPS performance with PIC peripheral integration, targeting cost-sensitive embedded applications. The M4K core supports single-cycle multiply, deterministic interrupt response, and the MPLAB Harmony software framework, making this part family a 32-bit performance upgrade path for designers familiar with PIC16/PIC24 devices.
Key features of this part include USB-OTG (Full-Speed) with on-chip transceiver, a 10-bit ADC with up to 1 Msps conversion rate, two I2C, two SPI, two UART modules, five 16-bit timers, four input-capture and four output-compare PWM channels, and a Parallel Master Port (PMP) for external bus peripherals. The 64-pin TQFP footprint exposes the full peripheral set including USB D+/D-, while a 32 KB Flash / 8 KB RAM memory map comfortably supports small RTOS, USB stacks (Microchip MLA) and graphical display protocols.
Typical applications include industrial control panels, USB peripherals (HID, CDC, vendor class), low-cost graphical HMI with PMP-connected LCDs, sensor aggregation gateways, and consumer appliances. Designers select the PIC32MX420 series when a 32-bit core, native USB, and a small footprint are needed at a sub-$3 price point.
Design considerations include careful analog/digital ground partitioning to maximise ADC accuracy, decoupling VDD/VSS with 100 nF plus 10 µF bulk capacitors close to the pins, and proper impedance matching on the USB D+/D- differential pair for Full-Speed compliance.
بدائل مباشرة لـ PIC32MX420F032HT-40I/PT — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC32MX420F032HT-40I/PT (نفس عامل الشكل والبصمة) — يختلف في Package, Operating Temperature, ADC, DMA Channels, MSL Level.
PIC32MX420F032HT-40V/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC32MX420F032H-40I/PT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC32MX320F064HT-40I/PT
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC32MX340F128HT-80I/PT
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC32MX320F128L-80V/PT
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC32MX420F032HT-40I/PT الحدود القصوى والخصائص الكهربائية
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Core Series | PIC32MX |
| Family | PIC32MX3XX/4XX |
| Maximum Clock Speed | 40 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| SRAM | 8 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| USB | USB-OTG Full-Speed with on-chip transceiver |
| ADC | 10-bit, up to 16 channels (1 Msps) |
| العلبة | 64-TQFP (PT) 10x10 mm |
| درجة حرارة التشغيل | -40 °C to +85 °C (industrial) |
| I/O Pins | 53 (approx., package-dependent) |
| Timers | 5 x 16-bit |
| Communication | 2x UART, 2x SPI, 2x I2C |
| PWM / Output Compare | 4 x 16-bit OC, 5 x Input Capture |
| Parallel Master Port (PMP) | Yes (for external LCD/FPGA) |
| DMA | 8-channel |
| نوع التركيب | Surface Mount |
| مستوى MSL | 3 |
| حالة RoHS | Compliant |
تكوين أطراف PIC32MX420F032HT-40I/PT
| دبوس 1 | RF11 — I/O port RF11 |
| دبوس 2 | RF0 — I/O port RF0 |
| دبوس 3 | RF1 — I/O port RF1 |
| دبوس 4 | RG2 — I/O port RG2 |
| دبوس 5 | RG3 — I/O port RG3 |
| دبوس 6 | RA0 — I/O port RA0 / analog input |
| دبوس 7 | RA1 — I/O port RA1 / analog input |
| دبوس 8 | RB0 — I/O port RB0 / analog input |
| دبوس 9 | RB1 — I/O port RB1 / analog input |
| دبوس 10 | RB2 — I/O port RB2 / analog input |
| دبوس 11 | RB3 — I/O port RB3 / analog input |
| دبوس 12 | RB4 — I/O port RB4 / analog input |
| دبوس 13 | RB5 — I/O port RB5 / analog input |
| دبوس 14 | RB6 — I/O port RB6 / PGED2 (ICSP data) |
| دبوس 15 | RB7 — I/O port RB7 / PGEC2 (ICSP clock) |
| دبوس 16 | RB8 — I/O port RB8 / analog input |
| دبوس 17 | RB9 — I/O port RB9 / analog input |
| دبوس 18 | RB10 — I/O port RB10 |
| دبوس 19 | RB11 — I/O port RB11 |
| دبوس 20 | RB12 — I/O port RB12 |
| دبوس 21 | RB13 — I/O port RB13 |
| دبوس 22 | RB14 — I/O port RB14 |
| دبوس 23 | RB15 — I/O port RB15 |
| دبوس 24 | RF4 — I/O port RF4 |
| دبوس 25 | RF5 — I/O port RF5 |
| دبوس 26 | RD0 — I/O port RD0 |
| دبوس 27 | RD1 — I/O port RD1 |
| دبوس 28 | RD2 — I/O port RD2 |
| دبوس 29 | RD3 — I/O port RD3 |
| دبوس 30 | RD4 — I/O port RD4 |
| دبوس 31 | RD5 — I/O port RD5 |
| دبوس 32 | RD6 — I/O port RD6 |
| دبوس 33 | RD7 — I/O port RD7 |
| دبوس 34 | RC13 — I/O port RC13 |
| دبوس 35 | RC14 — I/O port RC14 |
| دبوس 36 | RD8 — I/O port RD8 |
| دبوس 37 | RD9 — I/O port RD9 |
| دبوس 38 | RD10 — I/O port RD10 |
| دبوس 39 | RD11 — I/O port RD11 |
| دبوس 40 | RD12 — I/O port RD12 |
| دبوس 41 | RD13 — I/O port RD13 |
| دبوس 42 | RD14 — I/O port RD14 |
| دبوس 43 | RD15 — I/O port RD15 |
| دبوس 44 | RG6 — I/O port RG6 |
| دبوس 45 | RG7 — I/O port RG7 |
| دبوس 46 | RG8 — I/O port RG8 |
| دبوس 47 | RG9 — I/O port RG9 |
| دبوس 48 | VSS — Ground reference |
| دبوس 49 | VDD — Supply voltage 2.3-3.6 V |
| دبوس 50 | RF3 — I/O port RF3 |
| دبوس 51 | RF2 — I/O port RF2 |
| دبوس 52 | RF6 — I/O port RF6 / USB D- |
| دبوس 53 | RF7 — I/O port RF7 / USB D+ |
| دبوس 54 | RF8 — I/O port RF8 |
| دبوس 55 | VDD — Supply voltage 2.3-3.6 V |
| دبوس 56 | VSS — Ground reference |
| دبوس 57 | RA2 — I/O port RA2 |
| دبوس 58 | RA3 — I/O port RA3 |
| دبوس 59 | RA4 — I/O port RA4 |
| دبوس 60 | RA5 — I/O port RA5 |
| دبوس 61 | RC1 — I/O port RC1 |
| دبوس 62 | RC2 — I/O port RC2 |
| دبوس 63 | RC3 — I/O port RC3 |
| دبوس 64 | RC4 — I/O port RC4 |
التطبيقات النموذجية
PIC32MX420F032HT-40I/PT مناسب لـ 7 التطبيقs: USB HID Industrial Keypad, Low-Cost Graphical HMI with PMP LCD, Sensor Aggregation Gateway, USB Vendor Class Data Acquisition, Home Appliance Control Board, POS / Weighing Scale with PMP Display, Industrial CAN Gateway Bridge (USB-CAN).
USB HID Industrial Keypad
The PIC32MX420F032HT-40I/PT is ideal for USB HID industrial keypads because the on-chip USB-OTG Full-Speed controller eliminates external PHY chips, freeing PCB space and BOM cost. The 32 KB Flash comfortably hosts the Microchip MLA HID stack plus a custom scan matrix handler, while the 8 KB SRAM supports double-buffered endpoint transfers. The 40 MHz M4K core scans a 64-key matrix in < 1 ms with zero host-side latency. Operating from -40 °C to +85 °C industrial grade, the part is suitable for factory-floor control panels where stable supply (2.3-3.6 V) and ESD-tolerant GPIO are needed.
موصى به
Low-Cost Graphical HMI with PMP LCD
For low-cost graphical HMIs with 320x240 QVGA TFT LCDs, the PIC32MX420F032HT-40I/PT fits because the on-chip Parallel Master Port (PMP) directly drives 8-bit parallel LCDs without an external bus driver. The 32 KB Flash holds Microchip's gfx library primitives and 8-bit font tables, while 8 KB SRAM provides double-buffered frame regions for tear-free refresh. The 40 MHz M4K core renders buttons at 60 fps with simple text, and the 10-bit ADC reads touch-screen coordinates through 4-wire resistive panels.
موصى به
Sensor Aggregation Gateway
The PIC32MX420F032HT-40I/PT is suitable for sensor aggregation gateways where multiple UART/I2C/SPI sensors converge at a single MCU node. With two UART, two SPI, and two I2C channels plus 8-channel DMA, the part can sample 16 sensors concurrently without CPU intervention. The 32 KB Flash hosts a small command parser and the 8 KB SRAM buffers sensor frames before USB-CDC upload to a host PC. Industrial temperature grade (-40 to +85 C) supports outdoor sensor boxes, and 2.3-3.6 V supply accommodates battery-backed operation.
موصى به
USB Vendor Class Data Acquisition
For USB vendor class data acquisition (DAQ) modules, this part fits because native USB-OTG Full-Speed at 12 Mbps supports real-time streaming of ADC samples to a host. The 10-bit ADC at 1 Msps generates up to 1 M samples/sec, throttled to USB throughput by DMA. 32 KB Flash holds the vendor-class descriptor plus custom protocol, while 8 KB SRAM is enough for short acquisition bursts. The on-chip USB transceiver removes external PHY cost and the 64-pin TQFP exposes the full ADC channel count for multi-channel DAQ.
موصى به
Home Appliance Control Board
In home appliance control boards (washing machines, induction cookers, microwave ovens), this MCU is suitable because its 40 MHz MIPS core handles user interface, motor control via PWM and safety monitoring concurrently. The five 16-bit timers support 5-channel PWM for variable-speed drives and 4 input-capture channels for zero-crossing detection. Industrial -40 to +85 C grade covers inside-appliance temperatures, and the 64-pin TQFP package is easy to wave-solder at appliance contract manufacturers.
موصى به
POS / Weighing Scale with PMP Display
For POS terminals and weighing scales, the PIC32MX420F032HT-40I/PT fits because the on-chip USB-OTG enumerates as a CDC or HID class device without external bridges, and the PMP directly drives character/graphic LCDs. 32 KB Flash stores vendor-specific USB descriptors and the 8 KB SRAM buffers invoice records. The 10-bit ADC at 16 channels reads load-cell bridges through differential pairs with PGA, while 5 timers drive buzzer PWM and backlight dimming. Industrial temperature grade supports retail and warehouse environments.
موصى به
Industrial CAN Gateway Bridge (USB-CAN)
The PIC32MX420F032HT-40I/PT can serve as a USB-to-UART/SPI bridge for industrial CAN gateways, where it acts as the MCU host between an external CAN controller and a USB-attached host PC. The two UART/SPI/I2C channels connect to external CAN/MCP2515 controllers, while the USB-OTG port enumerates as CDC-ACM for transparent bridging. 40 MHz M4K core handles bit-stuffing and error handling with low-latency response. Industrial -40 to +85 C range supports factory-automation enclosures.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC32MX420F032HT-40I/PT — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC32MX420F032HT-40V/PT | PIC32MX420F032H-40I/PT | PIC32MX340F128HT-80I/PT |
|---|---|---|---|---|
| Package | 64-TQFP (PT) 10x10 mm | 64-TQFP (PT) - same | 64-TQFP (PT) - same | 64-TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 32 KB (same) | 32 KB (same) | 128 KB |
| SRAM | 8 KB | 8 KB (same) | 8 KB (same) | 16 KB |
| Maximum Clock Speed | 40 MHz | 40 MHz (same) | 40 MHz (same) | 80 MHz |
| Operating Temperature | -40 to +85 C (industrial) | -40 to +105 C (extended) | -40 to +85 C (industrial) | -40 to +85 C (industrial) |
| USB | USB-OTG Full-Speed, on-chip transceiver | USB-OTG Full-Speed, on-chip | USB-OTG Full-Speed, on-chip | USB-OTG Full-Speed, on-chip |
| Packaging Format | Tape & Reel | Tape & Reel | Tray | Tape & Reel |
| Approx. Unit Price (1k qty) | $3.42 | $3.42 (same) | $3.50 | $4.50 |
أبرز الفروقات
- On-chip USB-OTG Full-Speed transceiver with DMA (مقابلPIC32MX340F128HT-80I/PT)
- Wide temperature range option (V suffix) (مقابلPIC32MX420F032HT-40V/PT)
- Cost-optimised 32 KB Flash tier (مقابلPIC32MX270F256B-I/SP)
ملاحظات التصميم
Estimated: With a 3.3 V supply and 40 MHz clock at full I/O toggling, the PIC32MX420 core draws ~50 mA active and ~30 µA sleep. Decoupling must include a 10 µF bulk + 100 nF ceramic per VDD/VSS pair placed within 5 mm of the IC pins per Microchip DS61143H section 2.4. Add a ferrite bead on the USB VBUS line if the device is bus-powered, to suppress switching noise from upstream hosts.
Route the USB D+/D- differential pair with 90-ohm differential impedance and matched trace lengths (delta < 2 mm) for USB-OTG Full-Speed compliance. Place the crystal within 5 mm of the OSC1/OSC2 pins with a ground guard ring to reduce EMI, and keep high-frequency signals (PWM, USB) away from the analog ADC traces to preserve 10-bit ADC accuracy.
Common pitfalls when designing with PIC32MX420 include: (1) forgetting to set the JTAG/debugger disable fuse if debug pins RB6/RB7 must be used as GPIO; (2) not configuring the PLL to skip the PLL multiplier transitions during startup, which can cause intermittent lockups; (3) ignoring the USB attach/debounce requirements of section 27 in DS61143H, leading to enumeration failures; (4) leaving the PMP address latch pins floating, which can cause bus contention.
Estimated: In a typical 64-pin TQFP package with 4-layer PCB and adequate ground pour, theta-JA is ~50 °C/W. At full 50 mA active current and 3.6 V worst-case, dissipation is ~180 mW, yielding a junction temperature rise of ~9 °C above ambient. No heatsink is required, but adequate copper pour (1 square inch minimum) under the exposed die-pad should be maintained for thermal relief.
معلومات الامتثال
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - this is a general-purpose industrial MCU, not an automotive-grade part. Choose PIC32MX4xx family AEC-Q100 variants for automotive applications.
