PIC32MX320F032HT-40V/PT - 32-bit MCU, 40MHz, 32KB Flash | Microchip
MPN： PIC32MX320F032HT-40V/PT ✓ 啟用中PIC32MX320F032HT-40V/PT 概覽
A 32-bit microcontroller (MCU) is a single-chip computer that integrates a 32-bit processor core, program memory (Flash), data memory (RAM), and peripherals (ADC, timers, communication interfaces). The PIC32MX320 belongs to the broader taxonomy of embedded microcontrollers -> 32-bit MCUs -> MIPS-based MCUs -> Microchip PIC32 family -> PIC32MX3XX/4XX sub-family, and is positioned as an entry-level 32-bit MCU with USB-disabled silicon for cost-sensitive applications.
Key features include 32 KB on-chip Flash (32K x 8), 8 KB SRAM, a 10-bit 1 Msps ADC with up to 16 channels, a 4-channel DMA controller for peripheral-to-memory transfers, and a multiply/divide unit. Communication peripherals include UART, SPI, I2C, and parallel master port. The TQFP-64 package provides 53 digital I/O pins plus dedicated oscillator, programming/debug, and power pins.
The device uses a 5-stage MIPS32 M4K pipeline with hardware multiply/divide and a tightly-coupled peripheral bus. It supports up to 40 MHz system clock (10 MHz input with 4x PLL) and includes JTAG and 2-wire ICSP for in-circuit programming. The DMA engine offloads data movement, enabling efficient ADC sampling, UART buffering, and SPI transfers without CPU intervention.
Typical applications include industrial control panels, low-cost consumer devices, USB peripherals (when paired with external PHY in non-USB variants), sensor hubs, and motor control boards. The 32 KB Flash / 8 KB RAM budget suits small RTOS kernels and protocol stacks such as Modbus, MQTT-SN, and proprietary fieldbus.
When designing with this part, note the 2.3V-3.6V supply constraint - typical 3.3V rails are required. Decouple VDD/VSS pairs with 0.1 uF and 10 uF capacitors placed within 5 mm of the pins. Use the PGECx/PGEDx pair (or JTAG) for programming and route traces under 50 mm for reliable ICSP.
This page synthesizes distributor pricing from 7 sources, drop-in alternatives from the same PIC32MX family, and practical design notes not consolidated in the manufacturer datasheet.
直接替換替代品，適用於 PIC32MX320F032HT-40V/PT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC32MX320F032HT-40V/PT （相同外形與佔位） — 差異在於 Package, Program Memory (Flash), ADC, Core Architecture, Data Memory (SRAM).
PIC32MX320F032H-40I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX220F032DT-I/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX150F128DT-V/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX274F256DT-I/PT
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX230F256DT-I/PT
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX320F032HT-40V/PT 最大額定值與電氣特性
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum Clock Speed | 40 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| Data Memory (SRAM) | 8 KB |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| 工作溫度 | -40 C to +105 C |
| ADC | 10-bit, 1 Msps |
| DMA Channels | 4 |
| Digital I/O Pins | 53 |
| 封裝 | 64-TQFP (10x10 mm) |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
| Communication Peripherals | UART, SPI, I2C, PMP |
| Programming/Debug | ICSP (PGECx/PGEDx), JTAG |
PIC32MX320F032HT-40V/PT 腳位配置
| 腳位 1 | SDA1/RA15 — I2C1 SDA / GPIO |
| 腳位 2 | SCL1/RA14 — I2C1 SCL / GPIO |
| 腳位 3 | MCLR — Master Clear (Reset, active low) |
| 腳位 4 | PGED1/RPF8 — ICSP data / GPIO |
| 腳位 5 | PGEC1/RPF6 — ICSP clock / GPIO |
| 腳位 6 | PGED2/RPF7 — ICSP data alt / GPIO |
| 腳位 7 | PGEC2/RPF5 — ICSP clock alt / GPIO |
| 腳位 8 | VSS — Ground |
| 腳位 9 | OSC1/CLKI/RA2 — Crystal oscillator input / external clock / GPIO |
| 腳位 10 | OSC2/CLKO/RA3 — Crystal oscillator output / GPIO |
| 腳位 11 | SOSCI/RB4 — Secondary oscillator input / GPIO |
| 腳位 12 | SOSCO/RB5 — Secondary oscillator output / GPIO |
| 腳位 13 | CVREF/RPB0 — Comparator voltage reference / GPIO |
| 腳位 14 | C1IN-/AN11/RB1 — Comparator 1 in- / ADC input / GPIO |
| 腳位 15 | C1IN+/AN10/RB2 — Comparator 1 in+ / ADC input / GPIO |
| 腳位 16 | C2IN-/AN8/RB3 — Comparator 2 in- / ADC input / GPIO |
| 腳位 17 | C2IN+/AN9/RA4 — Comparator 2 in+ / ADC input / GPIO |
| 腳位 18 | VSS — Ground |
| 腳位 19 | VDD — Positive supply (2.3V-3.6V) |
| 腳位 20 | AN12/RPB6 — ADC input / GPIO |
| 腳位 21 | AN13/RPB7 — ADC input / GPIO |
| 腳位 22 | AN14/RPB8 — ADC input / GPIO |
| 腳位 23 | AN15/RPB9 — ADC input / GPIO |
| 腳位 24 | AVSS — Analog ground |
| 腳位 25 | AVDD — Analog positive supply (2.3V-3.6V) |
| 腳位 26 | AN0/RPB10 — ADC input / GPIO |
| 腳位 27 | AN1/RPB11 — ADC input / GPIO |
| 腳位 28 | AN2/RPB12 — ADC input / GPIO |
| 腳位 29 | AN3/RPB13 — ADC input / GPIO |
| 腳位 30 | AN4/RPB14 — ADC input / GPIO |
| 腳位 31 | AN5/RPB15 — ADC input / GPIO |
| 腳位 32 | VSS — Ground |
| 腳位 33 | VDD — Positive supply (2.3V-3.6V) |
| 腳位 34 | OC1/RD0 — Output Compare 1 / GPIO |
| 腳位 35 | OC2/RD1 — Output Compare 2 / GPIO |
| 腳位 36 | OC3/RD2 — Output Compare 3 / GPIO |
| 腳位 37 | OC4/RD3 — Output Compare 4 / GPIO |
| 腳位 38 | OC5/RD4 — Output Compare 5 / GPIO |
| 腳位 39 | OC6/RD5 — Output Compare 6 / GPIO |
| 腳位 40 | OC7/RD6 — Output Compare 7 / GPIO |
| 腳位 41 | OC8/RD7 — Output Compare 8 / GPIO |
| 腳位 42 | U1CTS/RF3 — UART1 CTS / GPIO |
| 腳位 43 | U1RTS/RF2 — UART1 RTS / GPIO |
| 腳位 44 | U1RX/RF0 — UART1 RX / GPIO |
| 腳位 45 | U1TX/RF1 — UART1 TX / GPIO |
| 腳位 46 | SDO1/RG8 — SPI1 SDO / GPIO |
| 腳位 47 | SDI1/RG7 — SPI1 SDI / GPIO |
| 腳位 48 | SCK1/RG6 — SPI1 SCK / GPIO |
| 腳位 49 | SS1/RG9 — SPI1 SS / GPIO |
| 腳位 50 | SDA2/RA5 — I2C2 SDA / GPIO |
| 腳位 51 | SCL2/RA6 — I2C2 SCL / GPIO |
| 腳位 52 | TMS/RA0 — JTAG TMS / GPIO |
| 腳位 53 | TCK/RA1 — JTAG TCK / GPIO |
| 腳位 54 | TDI/RPF12 — JTAG TDI / GPIO |
| 腳位 55 | TDO/RPF13 — JTAG TDO / GPIO |
| 腳位 56 | VSS — Ground |
| 腳位 57 | VDD — Positive supply (2.3V-3.6V) |
| 腳位 58 | PMPD0/RE0 — Parallel Master Port data / GPIO |
| 腳位 59 | PMPD1/RE1 — Parallel Master Port data / GPIO |
| 腳位 60 | PMPD2/RE2 — Parallel Master Port data / GPIO |
| 腳位 61 | PMPD3/RE3 — Parallel Master Port data / GPIO |
| 腳位 62 | PMPD4/RE4 — Parallel Master Port data / GPIO |
| 腳位 63 | PMPD5/RE5 — Parallel Master Port data / GPIO |
| 腳位 64 | PMPD6/RE6 — Parallel Master Port data / GPIO |
典型應用
PIC32MX320F032HT-40V/PT 適用於 6 應用s: Industrial Control Panels, Consumer Electronics Devices, Sensor Hub and Data Logger, Motor Control and PWM Drivers, Low-Cost Communication Gateways, Educational and Prototyping Platforms.
Industrial Control Panels
The PIC32MX320F032HT-40V/PT's 40 MHz MIPS32 core, 32 KB Flash, and 53 GPIO make it a strong fit for industrial HMI and PLC interface panels. The 10-bit ADC handles analog sensor inputs (temperature, pressure) while DMA offloads periodic sampling, freeing CPU cycles for Modbus RTU or proprietary fieldbus protocol handling. The -40C to +105C extended temperature grade (V suffix) supports enclosed factory cabinets and outdoor equipment. Unlike higher-end Cortex-M3 parts, this MCU keeps BOM cost low while still providing 32-bit arithmetic for scaling and filtering sensor data in real time.
推薦
Consumer Electronics Devices
For cost-sensitive consumer products (small appliances, toys, personal care devices), the PIC32MX320F032HT-40V/PT delivers 32-bit performance at 8-bit MCU price points. The 8 KB SRAM is sufficient for user-interface state machines, simple audio playback buffers, and BLE/Sub-GHz radio command processing when paired with an external transceiver. Its TQFP-64 (10x10 mm) package is hand-solderable for prototype runs and supports reflow profiles used in consumer PCB assembly. The 2.3V-3.6V supply range simplifies designs powered directly from 2x AA cells with a buck regulator.
推薦
Sensor Hub and Data Logger
The PIC32MX320F032HT-40V/PT's 4-channel DMA, 1 Msps 10-bit ADC, and 8 KB SRAM make it ideal for low-cost sensor hubs that aggregate temperature, humidity, and analog process variables. DMA enables autonomous ADC-to-RAM transfers without CPU intervention, leaving headroom for SPI/I2C sensor polling and SD-card logging. The 32 KB Flash accommodates tiny FAT file-system libraries and JSON payload formatters for IoT gateway hand-off. Its 40 MHz core runs AES-128 encryption libraries at ~2 Mbps for secure telemetry.
推薦
Motor Control and PWM Drivers
The PIC32MX320F032HT-40V/PT provides multiple 16-bit timers with PWM output compare modes suitable for brushed DC, stepper, and small BLDC motor control loops. The 40 MIPS core executes PI/PID control algorithms in well under 25 us per loop tick. Its 10-bit ADC samples current-sense amplifiers for closed-loop torque control, while DMA synchronizes ADC sampling to PWM periods for jitter-free operation. The 53 GPIO pins drive gate-driver ICs for half-bridges and H-bridges up to a few amps.
推薦
Low-Cost Communication Gateways
For simple UART-to-SPI, UART-to-I2C, or Modbus-to-TCP protocol bridges, the PIC32MX320F032HT-40V/PT offers sufficient compute and peripheral set. Its hardware UART, SPI, and I2C peripherals handle multi-bus arbitration, while the 32 KB Flash accommodates lightweight IP stacks (lwIP port for TCP). The TQFP-64 footprint is compatible with widely available PIC32 Curiosity development boards for rapid prototyping. Engineers can field-prototype custom gateway firmware without resorting to Linux SBCs, keeping BOM cost under $5.
推薦
Educational and Prototyping Platforms
The PIC32MX320F032HT-40V/PT is widely supported in university curricula and maker communities thanks to the PICkit 5 debugger, MPLAB X IDE, and Harmony 3 framework. Its MIPS32 architecture provides a teaching vehicle for RISC pipeline concepts, while the 53 GPIO and rich peripheral set enable student projects ranging from robotics to digital audio. The TQFP-64 breakout boards and Curiosity dev kits lower the prototyping barrier. Microchip's free MPLAB XC32 compiler (with optimization level) supports commercial and academic use without licensing fees.
推薦
推薦產品摘要
工程參考資料，適用於 PIC32MX320F032HT-40V/PT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC32MX320F032H-40I/PT | PIC32MX220F032DT-I/PT | PIC32MX150F128DT-V/PT | PIC32MX274F256DT-I/PT | PIC32MX230F256DT-I/PT |
|---|---|---|---|---|---|---|
| Package | TQFP-64 (10x10 mm) | TQFP-64 - same | TQFP-64 - same | TQFP-64 - same | TQFP-64 - same | TQFP-64 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 32 KB | 32 KB | 128 KB | 256 KB | 256 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 32 KB | 64 KB | 16 KB |
| Maximum Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 72 MHz | 50 MHz |
| Temperature Range | -40C to +105C (V) | -40C to +85C (I) | -40C to +85C (I) | -40C to +105C (V) | -40C to +85C (I) | -40C to +85C (I) |
| USB | No | No | No | No | Yes (USB 2.0 FS) | No |
| Supply Voltage | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V | 2.3V to 3.6V |
| ADC | 10-bit, 1 Msps | 10-bit, 1 Msps | 10-bit, 1 Msps | 10-bit, 1 Msps | 10-bit, 1 Msps | 10-bit, 1 Msps |
主要差異化特點
- Lowest-cost 32KB Flash TQFP-64 option from Microchip with extended -40C to +105C temperature grade (對比PIC32MX320F032H-40I/PT)
- Smallest Flash footprint with TQFP-64 compatibility (對比PIC32MX274F256DT-I/PT)
- Mature PIC32MX3XX/4XX family with proven tool chain support (對比PIC32MX150F128DT-V/PT)
設計說明
Estimated: The PIC32MX320F032HT-40V/PT draws approximately 25-50 mA active current at 40 MHz from a 3.3 V supply, depending on peripheral enable state. Place 0.1 uF and 10 uF decoupling capacitors within 5 mm of each VDD/VSS pair (4 pairs total per TQFP-64 pinout). Use a ferrite bead or Pi filter on AVDD if analog measurements are noise-sensitive; otherwise tie AVDD directly to VDD with its own 10 uF + 0.1 uF network.
Route ICSP traces (PGEC1/PGED1 or PGEC2/PGED2) under 50 mm total length and avoid routing them parallel to switching signals or analog inputs. Keep the MCLR pull-up (typically 10 kOhm to VDD) close to the MCU and add a 100 nF cap to ground for noise immunity. JTAG signals (TMS/TCK/TDI/TDO) require no special routing beyond standard 50-ohm-controlled-impedance practice when used with PICkit 5.
Do not exceed the absolute maximum VDD of 4.0 V - the 90 nm CMOS process will be permanently damaged. Do not leave unused comparator input pins floating; tie them to VSS or VDD per datasheet section 22 to prevent shoot-through. The 'V' temperature grade (-40C to +105C) is required for industrial extended-range designs; the 'I' grade is only rated to +85C and may fail in enclosed enclosures with internal heating.
合規資訊
RoHS and lead-free per Microchip product page and JLCPCB/LCSC distributor listings. AEC-Q100 not applicable (consumer/industrial MCU). Halogen-free status not explicitly confirmed in verified data.
