PIC32MX420F032HT-40I/PT - 32-bit MCU 32KB Flash 40MHz TQFP-64
MPN: PIC32MX420F032HT-40I/PT ✓ فعالPIC32MX420F032HT-40I/PT نمای کلی
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.
جایگزین‌های drop-in برای PIC32MX420F032HT-40I/PT — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
گونه‌ها در این سری
مدل‌های هم‌سری که جایگزین مستقیم هستند برای PIC32MX420F032HT-40I/PT (همان فرم‌فاکتور و فوت‌پرینت) — متفاوت در Package, Operating Temperature, ADC, DMA Channels, MSL Level.
PIC32MX420F032HT-40V/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC32MX420F032H-40I/PT
✅ جایگزین مستقیمبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC32MX320F064HT-40I/PT
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC32MX340F128HT-80I/PT
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
PIC32MX320F128L-80V/PT
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←PIC32MX420F032HT-40I/PT حداکثر مقادیر مجاز و مشخصات الکتریکی
| 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) |
| بسته‌بندی | 64-TQFP (PT) 10x10 mm |
| دمای کاری | -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 نصب | Surface Mount |
| سطح MSL | 3 |
| وضعیت RoHS | Compliant |
پیکربندی پین PIC32MX420F032HT-40I/PT
| پین 1 | RF11 — I/O port RF11 |
| پین 2 | RF0 — I/O port RF0 |
| پین 3 | RF1 — I/O port RF1 |
| پین 4 | RG2 — I/O port RG2 |
| پین 5 | RG3 — I/O port RG3 |
| پین 6 | RA0 — I/O port RA0 / analog input |
| پین 7 | RA1 — I/O port RA1 / analog input |
| پین 8 | RB0 — I/O port RB0 / analog input |
| پین 9 | RB1 — I/O port RB1 / analog input |
| پین 10 | RB2 — I/O port RB2 / analog input |
| پین 11 | RB3 — I/O port RB3 / analog input |
| پین 12 | RB4 — I/O port RB4 / analog input |
| پین 13 | RB5 — I/O port RB5 / analog input |
| پین 14 | RB6 — I/O port RB6 / PGED2 (ICSP data) |
| پین 15 | RB7 — I/O port RB7 / PGEC2 (ICSP clock) |
| پین 16 | RB8 — I/O port RB8 / analog input |
| پین 17 | RB9 — I/O port RB9 / analog input |
| پین 18 | RB10 — I/O port RB10 |
| پین 19 | RB11 — I/O port RB11 |
| پین 20 | RB12 — I/O port RB12 |
| پین 21 | RB13 — I/O port RB13 |
| پین 22 | RB14 — I/O port RB14 |
| پین 23 | RB15 — I/O port RB15 |
| پین 24 | RF4 — I/O port RF4 |
| پین 25 | RF5 — I/O port RF5 |
| پین 26 | RD0 — I/O port RD0 |
| پین 27 | RD1 — I/O port RD1 |
| پین 28 | RD2 — I/O port RD2 |
| پین 29 | RD3 — I/O port RD3 |
| پین 30 | RD4 — I/O port RD4 |
| پین 31 | RD5 — I/O port RD5 |
| پین 32 | RD6 — I/O port RD6 |
| پین 33 | RD7 — I/O port RD7 |
| پین 34 | RC13 — I/O port RC13 |
| پین 35 | RC14 — I/O port RC14 |
| پین 36 | RD8 — I/O port RD8 |
| پین 37 | RD9 — I/O port RD9 |
| پین 38 | RD10 — I/O port RD10 |
| پین 39 | RD11 — I/O port RD11 |
| پین 40 | RD12 — I/O port RD12 |
| پین 41 | RD13 — I/O port RD13 |
| پین 42 | RD14 — I/O port RD14 |
| پین 43 | RD15 — I/O port RD15 |
| پین 44 | RG6 — I/O port RG6 |
| پین 45 | RG7 — I/O port RG7 |
| پین 46 | RG8 — I/O port RG8 |
| پین 47 | RG9 — I/O port RG9 |
| پین 48 | VSS — Ground reference |
| پین 49 | VDD — Supply voltage 2.3-3.6 V |
| پین 50 | RF3 — I/O port RF3 |
| پین 51 | RF2 — I/O port RF2 |
| پین 52 | RF6 — I/O port RF6 / USB D- |
| پین 53 | RF7 — I/O port RF7 / USB D+ |
| پین 54 | RF8 — I/O port RF8 |
| پین 55 | VDD — Supply voltage 2.3-3.6 V |
| پین 56 | VSS — Ground reference |
| پین 57 | RA2 — I/O port RA2 |
| پین 58 | RA3 — I/O port RA3 |
| پین 59 | RA4 — I/O port RA4 |
| پین 60 | RA5 — I/O port RA5 |
| پین 61 | RC1 — I/O port RC1 |
| پین 62 | RC2 — I/O port RC2 |
| پین 63 | RC3 — I/O port RC3 |
| پین 64 | RC4 — I/O port RC4 |
کاربردهای معمول
PIC32MX420F032HT-40I/PT مناسب است برای 7 کاربردs: 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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
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.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای PIC32MX420F032HT-40I/PT — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | 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 |
تفاوت‌های کلیدی
- On-chip USB-OTG Full-Speed transceiver with DMA (در مقابلPIC32MX340F128HT-80I/PT)
- Wide temperature range option (V suffix) (در مقابلPIC32MX420F032HT-40V/PT)
- Cost-optimised 32 KB Flash tier (در مقابلPIC32MX270F256B-I/SP)
یادداشت‌های طراحی
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.
اطلاعات انطباق
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.
