PIC32MX420F032HT-40V/PT - 32-bit MCU 32KB Flash USB-OTG | Microchip
料号： PIC32MX420F032HT-40V/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $4.62 | $4.62 |
| 10 | $4.1 | $41.00 |
| 100 | $3.59 | $359.00 |
| 500 | $3.18 | $1,590.00 |
| 1,000 | $2.79 | $2,790.00 |
PIC32MX420F032HT-40V/PT 概述
Background: A microcontroller unit (MCU) is a single-chip computer that integrates a CPU core, memory (Flash + SRAM), and programmable peripherals (ADC, timers, communication interfaces) on one die. The PIC32MX420 uses a MIPS32 M4K core, a 32-bit RISC architecture licensed by MIPS that delivers 1.56 DMIPS/MHz, paired with Microchip's PIC peripherals. Within the broader taxonomy, this part sits at: 32-bit MCU -> MIPS microcontroller -> PIC32 family -> PIC32MX4xx sub-family -> integrated peripherals power management IC. This same-Family positioning explains why it pairs naturally with PIC32MX3xx, PIC32MX1xx/2xx, and PIC24/dsPIC parts.
Key features include a full-speed USB-OTG transceiver with on-chip pull-up/pull-down control, a 16-channel 10-bit ADC with 1 Msps conversion rate, two I2C, two SPI, and two UART interfaces, five 16-bit timers/counters, an RTCC, and a 4-channel DMA controller for offloading CPU data movement. The 'H' suffix denotes 64-pin TQFP, the 'T' denotes tape and reel, the '40V' indicates 40 MHz speed grade and the V (extended, -40C to +105C) operating temperature range.
Architecturally, the PIC32MX420 separates the MIPS core and a peripheral bus clocked at peripheral bus frequency, with peripheral pin select (PPS) enabling flexible peripheral-to-pin routing on higher-pin-count packages. The DMA controller can service the ADC, UART/SPI/I2C, and timers, which is particularly useful for sustained audio/USB throughput without CPU intervention. The 10-bit 1 Msps ADC combined with the 40 MHz MIPS core makes the part well-suited to real-time sensing loops.
Typical applications include USB peripherals (HID, CDC, MSD, audio class), small graphical user interfaces via PMP/parallel master port, motor control BLDC/PMSM drives, industrial control front-ends, sensor hubs, and portable test instruments that demand deterministic CPU performance with on-chip full-speed USB.
Design consideration: the USB-OTG pins require an internal pull-up selected in software; an external 1.5 kohm pull-up is only needed when using the bus-powered device mode without internal pull-ups enabled. Decoupling the 3.3V rail with a 100 nF ceramic at each VDD/VSS pair and a bulk 4.7 uF at the regulator is essential for USB signal-integrity compliance.
This page consolidates current distributor pricing, drop-in compatible alternatives in the same 64-pin TQFP footprint, and practical engineering notes not duplicated in the manufacturer's datasheet.
直接替换替代料： PIC32MX420F032HT-40V/PT ——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： PIC32MX420F032HT-40V/PT （相同外形与封装尺寸） ——差异在于 Package, ADC, Core Architecture, Operating Temperature, DMA Channels.
快速对比工具——选择替代料号进行并排对比：
PIC32MX420F032HT-40I/PT
✅ 直接替换✓ 有现货
$3.42 / 个
查看数据手册 →PIC32MX420F032H-40I/MR
✅ 直接替换✓ 有现货
$2.5 / 个
查看数据手册 →PIC32MX420F032HT-40I/MR
✅ 直接替换✓ 有现货
$5.74 / 个
查看数据手册 →PIC32MX420F032H-40I/
✅ 直接替换✓ 有现货
$4.1 / 个
查看数据手册 →PIC32MX420F032HT-40V/PT 最大额定值与电气特性
| Core Architecture | MIPS32 M4K |
| Core Frequency | 40 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| Data SRAM | 8 KB |
| 电源电压 | 2.3 V to 3.6 V (typical 3.3 V) |
| 工作温度 | -40 C to +105 C (V grade) |
| ADC | 10-bit, up to 1 Msps |
| USB | USB-OTG (full-speed, 12 Mbps) with on-chip transceiver |
| DMA Channels | 4 |
| Timers | 5 x 16-bit |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| 封装 | 64-pin TQFP (10x10 mm), /PT suffix |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| MSL 等级 | MSL3 (per typical TQFP handling) |
PIC32MX420F032HT-40V/PT 64-pin tqfp (10x10 mm), /pt suffix 引脚配置指南
PIC32MX420F032HT-40V/PT（64-pin tqfp (10x10 mm), /pt suffix 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： PIC32MX420F032HT-40V/PT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PIC32MX420F032HT-40V/PT 适用于 6 应用s: USB HID/CDC Peripheral Devices, Industrial Sensor Hubs, Small Graphical User Interfaces (PMP), BLDC/PMSM Motor Control, Portable Test and Measurement, USB-OTG Host (Smart Hub).
USB HID/CDC Peripheral Devices
The PIC32MX420F032HT-40V/PT is ideal for USB HID and CDC peripherals because of its integrated full-speed USB-OTG transceiver and 32 KB Flash, which is enough room for Microchip's USB stack plus application logic. The 10-bit 1 Msps ADC handles analog sensors feeding USB reports at typical 1 kHz polling without saturating the MIPS32 M4K core at 40 MHz. The on-chip pull-up selection (via the USB module register) eliminates an external 1.5 kohm resistor in bus-powered designs, simplifying the BOM. Versus PIC24 alternatives, the 32-bit core delivers 2-3x the throughput for HID reports with bulk endpoint throughput, useful for keyboards/mice/CDC serial emulators that need deterministic latency.
推荐
Industrial Sensor Hubs
The PIC32MX420F032HT-40V/PT's 16-channel 10-bit ADC, 4-channel DMA, and -40C to +105C extended temperature grade (V suffix) make it a strong fit for industrial sensor hubs that aggregate 4-8 analog inputs at 1 Msps and forward data over USB. The DMA controller offloads ADC sample transfer to memory, freeing the 40 MHz MIPS core for sensor fusion math; the part's 8 KB SRAM buffers DMA descriptors plus ADC ping-pong buffers. The 64-pin TQFP footprint offers sufficient I/O for digital sensor busses (SPI/I2C) and RS-485 UART bridges.
推荐
Small Graphical User Interfaces (PMP)
The PIC32MX420F032HT-40V/PM parallel master port (PMP) can drive small graphical LCDs (up to QVGA) when paired with sufficient external memory, though the 8 KB SRAM and 32 KB Flash are tight for full QVGA framebuffers; engineers typically use external SRAM for buffering. The 40 MHz MIPS core can sustain bit-banged SPI/8080 transactions at 20+ MHz PMP clock, enabling responsive UI updates at 30+ Hz. The 64-pin TQFP footprint exposes enough I/O for PMP data, control, and resistive touch.
推荐
BLDC/PMSM Motor Control
The PIC32MX420F032HT-40V/PM five 16-bit timers, 4-channel DMA, and -40C to +105C extended temperature grade support single-shunt and dual-shunt BLDC/PMSM motor control loops at switching frequencies up to 50 kHz. The 10-bit ADC paired with PWM with 10-bit resolution is acceptable for trapezoidal commutation; field-oriented control (FOC) implementations typically migrate to dsPIC33 parts. The 64-pin TQFP exposes enough I/O for three-phase gate driver enable signals, hall-sensor inputs, and over-current comparators.
推荐
Portable Test and Measurement
The PIC32MX420F032HT-30V/PM USB-OTG enables battery-powered portable instruments to push 1 Msps ADC samples over USB to a host PC for analysis, while the 32-bit MIPS core handles digital signal conditioning. The 40 MHz speed grade is sufficient for FIR/IIR filtering at audio bandwidths; the 8 KB SRAM accommodates 256 32-bit filter taps plus ADC ping-pong buffers. The 64-pin TQFP package's exposed pad provides good thermal dissipation for full 1-slot ADC sampling at 1 Msps.
推荐
USB-OTG Host (Smart Hub)
The PIC32MX420F032HT-40V/PM USB-OTG host mode allows it to enumerate USB peripherals (keyboards, mass storage, CDC modems) at full speed, making it a fit for embedded HMI kiosks that read barcodes or RFID readers. The 32 KB Flash accommodates a USB host stack plus HID/MSD class drivers, while 8 KB SRAM handles USB host descriptor buffers and a single-page FAT cache. The 64-pin TFP exposes USB host power-enable and overcurrent signals on dedicated pins, simplifying host port protection circuits.
推荐
推荐产品汇总
工程参考数据： PIC32MX420F032HT-40V/PT ——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 | PIC32MX420F032HT-40I/PT | PIC32MX420F032H-40I/MR | PIC32MX420F032HT-40I/MR | PIC32MX420F032H-40I/ |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-pin TQFP (10x10 mm) | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same | 64-pin TQFP (10x10 mm) - same |
| Core Architecture | MIPS32 M4K 32-bit | MIPS32 M4K 32-bit - same | MIPS32 M4K 32-bit - same | MIPS32 M4K 32-bit - same | MIPS32 M4K 32-bit - same |
| Core Frequency | 40 MHz | 40 MHz - same | 40 MHz - same | 40 MHz - same | 40 MHz - same |
| Program Flash | 32 KB | 32 KB - same | 32 KB - same | 32 KB - same | 32 KB - same |
| Data SRAM | 8 KB | 8 KB - same | 8 KB - same | 8 KB - same | 8 KB - same |
| USB-OTG | Yes (full-speed) | Yes (full-speed) - same | Yes (full-speed) - same | Yes (full-speed) - same | Yes (full-speed) - same |
| Operating Temperature | -40C to +105C (extended) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| ADC | 10-bit, 1 Msps | 10-bit, 1 Msps - same | 10-bit, 1 Msps - same | 10-bit, 1 Msps - same | 10-bit, 1 Msps - same |
关键差异点
- Extended temperature grade (-40C to +105C) for industrial applications （对比 PIC32MX420F032HT-40I/PT)
- On-chip USB-OTG eliminates external PHY （对比 PIC32MX230F064H (no USB))
- 32-bit MIPS32 M4K core with 1.56 DMIPS/MHz （对比 PIC24FJ64GA004 (16-bit))
设计说明
Decouple each VDD/VSS pair with a 100 nF ceramic placed within 3 mm of the pin, plus a bulk 4.7 uF tantalum or aluminum polymer near the 3.3V regulator output. The USB D+/D- trace impedance must be 45 ohms single-ended (90 ohms differential) per USB 2.0 specification; route D+/D- as a length-matched differential pair with no stubs. The AVDD pin (analog 3.3V) should be filtered with a ferrite bead and decoupled with 100 nF + 10 uF for ADC accuracy at 1 Msps.
Do not enable both the internal USB pull-up and an external 1.5 kohm pull-up on D+; this violates the USB electrical spec and can fail USB-IF compliance testing. The 'V' suffix (extended -40C to +105C) and 'I' suffix (industrial -40C to +85C) are not interchangeable in safety-critical applications; verify the temperature range matches the end-product spec. The 64-pin TQFP exposed pad must be soldered to the PCB ground plane for thermal dissipation and electrical performance; failing to solder the pad can cause junction temperature rise at full USB + ADC load.
Route the 40 MHz system clock trace with controlled impedance and keep it short (< 25 mm); use a ground reference plane on layer 2 directly under the clock trace. Place the 8 MHz primary oscillator crystal within 5 mm of OSC1/OSC2 pins with short, symmetric traces and a guard ground ring to reduce EMI. The ICSP programming pins (PGECx/PGEDx) should be brought out to a 0.1-inch header for production programming and debug access; do not place series resistors on these pins.
合规信息
RoHS and lead-free status confirmed per Microchip product family documentation. AEC-Q100 qualification is not claimed for the PIC32MX420 family; AEC-Q100 parts in this segment would be PIC32MX1xx/2xx automotive variants. Halogen-free status not explicitly stated in the verified data.
