PIC32MX420F032H-40I/PT - 32-bit MCU 32KB Flash 8KB RAM 40MHz | Microchip
MPN: PIC32MX420F032H-40I/PT ✓ Hoạt độngPIC32MX420F032H-40I/PT Tóm tắt
A 32-bit microcontroller (MCU) is an integrated processor core, memory, and peripherals built on a single silicon die, designed to execute embedded control tasks. The PIC32MX family uses the MIPS32 M4K core architecture, a Harvard-style RISC design with separate instruction and data paths that enable single-cycle Flash accesses. Within the broader taxonomy, PIC32MX MCUs belong to the Microchip PIC® family, which scales from 8-bit PIC16/PIC18 devices to 16-bit dsPIC® DSCs and 32-bit PIC32 parts. This positions the PIC32MX420F as a mid-range general-purpose controller for cost-sensitive embedded designs.
The device integrates 32 KB Flash, 8 KB SRAM, USB-OTG full-speed PHY, a 10-bit 1 Msps ADC with up to 16 channels, five 16-bit timers, two UART, two SPI, two I2C, and a parallel master port (PMP). The M4K core provides single-cycle multiply, hardware divide, and a 5-stage pipeline that reaches 1.56 DMIPS/MHz. An 8-channel DMA controller offloads peripheral servicing from the core.
Typical use cases include USB peripherals (HID, CDC, mass storage, audio class), industrial HMI panels, low-cost graphics terminals via PMP, sensor hubs with USB bridging, and general-purpose embedded controllers. The 32 KB Flash / 8 KB RAM balance makes it well-suited for USB device stacks that need the extra code space.
When designing with this MCU, add a 32.768 kHz secondary crystal if USB suspend current compliance is required, and follow the trace-length rule and PCB layout guideline for the USB D+/D- differential pair as documented in the PIC32MX3XX/4XX family datasheet. This page synthesizes distributor pricing, pin-compatible PIC32 family alternatives, and application guidance not aggregated on distributor sites.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX420F032H-40I/PT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC32MX420F032H-40I/PT (cùng hình factor và footprint) — khác nhau ở Package, ADC, Core Architecture, USB, Operating Temperature.
PIC32MX420F032H-40V/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX420F032HT-40I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX320F064H-40I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX320F064HT-40I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX320F032H-40I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX270F256B-50I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX420F032H-40I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K (Harvard) |
| Core Width | 32-bit |
| Maximum CPU Frequency | 40 MHz |
| Performance | 1.56 DMIPS/MHz |
| Program Flash | 32 KB (32K x 8) |
| SRAM | 8 KB |
| Operating Voltage | 2.3 V to 3.6 V |
| ADC | 10-bit, up to 16 channels |
| USB | USB-OTG, Full Speed |
| Timers | 5 x 16-bit |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| Parallel Master Port (PMP) | Yes |
| DMA Channels | 8 |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Hộp | 64-pin TQFP (PT), 10x10 mm |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC32MX420F032H-40I/PT
| Chân 1 | RF5 — General purpose I/O |
| Chân 2 | RF4 — General purpose I/O |
| Chân 3 | RPB5 — Remappable peripheral I/O |
| Chân 4 | VSS — Ground |
| Chân 5 | RPB6 — Remappable peripheral I/O |
| Chân 6 | RPB7 — Remappable peripheral I/O |
| Chân 7 | RPB8 — Remappable peripheral I/O |
| Chân 8 | RPB9 — Remappable peripheral I/O |
| Chân 9 | RPB10 — Remappable peripheral I/O |
| Chân 10 | RPB11 — Remappable peripheral I/O |
| Chân 11 | VSS — Ground |
| Chân 12 | VDD — Positive supply (2.3 V to 3.6 V) |
| Chân 13 | RPB12 — Remappable peripheral I/O |
| Chân 14 | RPB13 — Remappable peripheral I/O |
| Chân 15 | RPB14 — Remappable peripheral I/O |
| Chân 16 | RPB15 — Remappable peripheral I/O |
| Chân 17 | VSS1 — Ground |
| Chân 18 | VDD1 — Positive supply (2.3 V to 3.6 V) |
| Chân 19 | PGEC1 — ICSP programming clock |
| Chân 20 | PGED1 — ICSP programming data |
| Chân 21 | PGEC2 — ICSP programming clock (alternate) |
| Chân 22 | PGED2 — ICSP programming data (alternate) |
| Chân 23 | TRST — JTAG test reset |
| Chân 24 | TCK — JTAG test clock |
| Chân 25 | TDI — JTAG test data in |
| Chân 26 | TDO — JTAG test data out |
| Chân 27 | TMS — JTAG test mode select |
| Chân 28 | VSS — Ground |
| Chân 29 | VDD — Positive supply (2.3 V to 3.6 V) |
| Chân 30 | RPC0 — Remappable peripheral I/O |
| Chân 31 | RPC1 — Remappable peripheral I/O |
| Chân 32 | RPC2 — Remappable peripheral I/O |
| Chân 33 | RPC3 — Remappable peripheral I/O |
| Chân 34 | RPC4 — Remappable peripheral I/O |
| Chân 35 | RPC5 — Remappable peripheral I/O |
| Chân 36 | RPC6 — Remappable peripheral I/O |
| Chân 37 | RPC7 — Remappable peripheral I/O |
| Chân 38 | RPC8 — Remappable peripheral I/O |
| Chân 39 | RPC9 — Remappable peripheral I/O |
| Chân 40 | VSS — Ground |
| Chân 41 | VDD — Positive supply (2.3 V to 3.6 V) |
| Chân 42 | RPD0 — Remappable peripheral I/O |
| Chân 43 | RPD1 — Remappable peripheral I/O |
| Chân 44 | RPD2 — Remappable peripheral I/O |
| Chân 45 | RPD3 — Remappable peripheral I/O |
| Chân 46 | RPD4 — Remappable peripheral I/O |
| Chân 47 | RPD5 — Remappable peripheral I/O |
| Chân 48 | RPD6 — Remappable peripheral I/O |
| Chân 49 | RPD7 — Remappable peripheral I/O |
| Chân 50 | RPD8 — Remappable peripheral I/O |
| Chân 51 | RPD9 — Remappable peripheral I/O |
| Chân 52 | RPD10 — Remappable peripheral I/O |
| Chân 53 | RPD11 — Remappable peripheral I/O |
| Chân 54 | RPD12 — Remappable peripheral I/O |
| Chân 55 | RPD13 — Remappable peripheral I/O |
| Chân 56 | RPD14 — Remappable peripheral I/O |
| Chân 57 | RPD15 — Remappable peripheral I/O |
| Chân 58 | VSS — Ground |
| Chân 59 | VDD — Positive supply (2.3 V to 3.6 V) |
| Chân 60 | D+ — USB D+ data line |
| Chân 61 | D- — USB D- data line |
| Chân 62 | VBUS — USB VBUS detect |
| Chân 63 | VUSB — USB transceiver supply (3.3 V) |
| Chân 64 | RF3 — General purpose I/O |
Ứng dụng tiêu biểu
PIC32MX420F032H-40I/PT phù hợp cho 6 Áp dụngs: USB HID / CDC / Mass Storage Devices, Industrial HMI Panels and PMP Displays, Sensor Hub with USB Bridge, Low-Cost Audio Class USB Devices, General-Purpose Embedded Controller, USB Bootloader and Field-Upgradable Nodes.
USB HID / CDC / Mass Storage Devices
The PIC32MX420F032H-40I/PT's integrated USB-OTG full-speed PHY and 40 MHz MIPS M4K core make it well suited for USB device-class implementations including HID keyboards, CDC virtual COM ports, and USB mass storage devices. The 32 KB Flash fits the Microchip Harmony HID stack with class driver overhead, while 8 KB SRAM is sufficient for endpoint buffers and a small working set. Unlike external PHY designs, the on-chip PHY eliminates discrete components and reduces BOM cost. Place a 90-ohm common-mode choke on the D+/D- lines per the PIC32MX3XX/4XX family datasheet for EMI compliance.
Được đề xuất
Industrial HMI Panels and PMP Displays
The PIC32MX420F032H-40I/PT parallel master port (PMP) interfaces directly to TFT LCD panels and external graphics controllers, making the part useful for low-cost industrial HMI panels and operator keypads. The 40 MHz core delivers enough throughput to refresh small QVGA displays via PMP with a modest frame buffer in the 8 KB SRAM. The 10-bit ADC reads front-panel potentiometers and temperature sensors. Industrial -40C to +85C temperature range (I-grade) suits factory floor enclosures, per the PIC32MX3XX/4XX family datasheet.
Được đề xuất
Sensor Hub with USB Bridge
The PIC32MX420F032H-40I/PT can aggregate sensor data from SPI/I2C peripherals and present it over USB to a host PC. Two SPI and two I2C interfaces let the MCU read multiple sensors in a sensor hub arrangement, while USB-OTG exposes the data stream to the host. The 32 KB Flash accommodates sensor-fusion and pre-processing code, and the 8-channel DMA offloads peripheral servicing. Compared with discrete USB-to-I2C bridges, this approach adds local intelligence and conditioning, per the PIC32MX3XX/4XX family datasheet.
Được đề xuất
Low-Cost Audio Class USB Devices
The PIC32MX420F032H-40I/PT supports USB audio class 1.0 device operation with sample-rate feedback synchronization using its 16-bit timers. The 40 MHz core, while not suited for high-fidelity audio DSP, handles USB isochronous transfers at 48 kHz mono adequately for intercom or basic audio peripherals. The 32 KB Flash fits the Harmony USB audio class driver, and 8 KB SRAM buffers small USB packets. The on-chip USB-OTG PHY eliminates external transceivers for an 8 kHz mono intercom-grade link, per the PIC32MX3XX/4XX family datasheet.
Được đề xuất
General-Purpose Embedded Controller
The PIC32MX420F032H-40I/PT serves as a general-purpose 32-bit embedded controller in cost-sensitive applications where 32-bit performance is needed but a full PIC32MX7xx part is over-spec. The 40 MHz M4K core delivers 62 DMIPS peak for state-machine control, and 32 KB Flash / 8 KB RAM fit typical control loops with logging. Two UARTs support field-bus or RS-485 interfaces, and the 10-bit ADC reads analog sensors. The TQFP-64 package provides generous GPIO for parallel control applications, per the PIC32MX3XX/4XX family datasheet.
Được đề xuất
USB Bootloader and Field-Upgradable Nodes
The PIC32MX420F032H-40I/PT supports Microchip's USB bootloader architecture, allowing field firmware upgrades via USB without an external programmer. The 32 KB Flash is partitioned to fit a small USB HID bootloader plus application image. The PIC32MX3XX/4XX family datasheet documents the standard bootloader entry-point and row-write Flash endurance, suitable for industrial nodes requiring periodic firmware updates over the USB connection.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX420F032H-40I/PT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC32MX420F032H-40V/PT | PIC32MX420F032HT-40I/PT | PIC32MX320F064H-40I/PT | PIC32MX320F032H-40I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-64 (PT) 10x10 mm | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same | TQFP-64 (PT) - same |
| Core | MIPS32 M4K, 32-bit | MIPS32 M4K, 32-bit | MIPS32 M4K, 32-bit | MIPS32 M4K, 32-bit | |
| Max CPU Frequency | 40 MHz | 40 MHz | 40 MHz | 80 MHz | |
| Flash | 32 KB | 32 KB | 64 KB | 32 KB | |
| RAM | 8 KB | 8 KB | 16 KB | 8 KB | |
| USB | USB-OTG FS | USB-OTG FS | USB-OTG FS | USB-OTG FS | |
| ADC | 10-bit | 10-bit | 10-bit | 10-bit | |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +105C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Bảo phân biệt quan trọng
- Lowest-cost 32 KB Flash 64-pin TQFP PIC32MX4XX variant (vsPIC32MX320F064H-40I/PT)
- Industrial temperature grade drop-in for -40C to +85C (vsPIC32MX420F032H-40V/PT)
- On-chip USB-OTG full-speed PHY eliminates external transceiver (vsExternal-USB MCU designs (e.g. PIC16 + FTDI bridge))
Ghi chú thiết kế
Route the USB D+ and D- lines as a 90-ohm differential pair with matched trace lengths, keep them short (<50 mm) and isolated from switching signals, and place a common-mode choke close to the connector. Place a 0.1uF decoupling cap on VUSB per the PIC32MX3XX/4XX family datasheet. Decoupling: place 0.1uF and 1uF ceramic caps on every VDD/VSS pair within 3 mm of the pin.
The TQFP-64 package has a thermal pad beneath the die connected to VSS; connect this pad to a large ground copper pour with at least 4 thermal vias to the inner ground plane to dissipate the maximum 0.6 W at 40 MHz. Use 4-layer PCB with dedicated ground and power planes to keep switching noise below 50 mV on VDD, per the PIC32MX3XX/4XX family datasheet.
Do not leave PGECx/PGEDx floating - these ICSP pins must be pulled or routed to a programming header. When using the on-chip USB PHY, the VUSB pin requires its own 3.3 V regulator output (do not connect directly to VDD if USB bus-powered designs exceed 100 mA). For USB suspend current compliance, add the 32.768 kHz secondary crystal circuit, per the PIC32MX3XX/4XX family datasheet.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified; this part is general-purpose/USB, not automotive-grade. Halogen-free status not specified in verified data.
