PIC32MX320F032H-40I/PT - 32-bit MCU, 32KB Flash, 40MHz | Microchip
MPN: PIC32MX320F032H-40I/PT ✓ Hoạt độngPIC32MX320F032H-40I/PT Tóm tắt
A microcontroller (MCU) is a single-chip computer integrating a CPU core, program memory (Flash), data memory (SRAM), and peripherals such as timers, communication interfaces, and GPIO. Within the broader semiconductor hierarchy, an MCU sits below microprocessors (MPUs) in integration: MCUs embed Flash/RAM on-die and target deterministic real-time control, while MPUs rely on external memory and run rich operating systems. The PIC32MX3XX/4XX family specifically bridges 8-bit PIC simplicity with 32-bit MIPS performance.
Key features of this part include the M4K MIPS32 core capable of 40 MHz (50 DMIPS/1.56 DMIPS/MHz), 32 KB on-chip Flash, 8 KB SRAM, a 10-bit 1 Msps ADC with up to 16 channels, USB 2.0 full-speed OTG, two UART, and two SPI/I2C peripherals. Industrial temperature grade (-40C to +85C) and 5V-tolerant digital I/O make it suitable for harsh environments. The TQFP-64 footprint exposes all major peripheral pins including PGECx/PGEDx for in-circuit serial programming (ICSP).
Architecturally, the PIC32MX3XX/4XX family uses a Harvard architecture with separate Flash and SRAM buses, allowing simultaneous instruction and data fetch. The 32-bit MIPS M4K core executes most instructions in a single cycle and includes a prefetch cache to mask flash wait states. Peripheral DMA is mapped onto master peripherals to offload CPU during high-bandwidth transfers. CodeGuard security is built in for IP protection.
Typical applications include USB peripherals, industrial control PLCs, sensor hubs, home automation gateways, and low-cost HMI displays. The combination of USB, ADC, and GPIO density in a single chip reduces BOM and PCB complexity. The wide 2.3 V - 3.6 V supply range simplifies designs using Li-ion or 3.3 V regulated rails.
When designing with this device, ensure the trace length between the ICSP connector and the PGECx/PGEDx pins remains short for stable programming/debug. Decouple VDD with a 0.1 uF ceramic near each power pin. Do not exceed 3.6 V on any supply pin; digital inputs are 5V-tolerant but analog references must respect VDD.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX320F032H-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 PIC32MX320F032H-40I/PT (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, ADC, USB, Core Architecture.
PIC32MX320F064H-40I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX320F032HT-40I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX340F128H-40I/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX320F032H-40V/PT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC32MX320F032H-40I/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K |
| CPU Speed | 40 MHz |
| Program Memory (Flash) | 32 KB |
| Data Memory (SRAM) | 8 KB |
| Điện áp cung cấp | 2.3 V to 3.6 V |
| I/O Pins | 53 |
| ADC | 10-bit, 1 Msps |
| Hộp | TQFP-64 (10x10 mm) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Kiểu lắp đặt | Surface Mount |
| USB | USB 2.0 Full-Speed OTG |
| UART | 2 |
| SPI | 2 |
| I2C | 2 |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC32MX320F032H-40I/PT
| Chân 1 | RG15 — General purpose I/O |
| Chân 2 | RG13 — General purpose I/O |
| Chân 3 | RG12 — General purpose I/O |
| Chân 4 | VDD — Power supply (3.3V) |
| Chân 5 | RF0 — General purpose I/O |
| Chân 6 | RF1 — General purpose I/O |
| Chân 7 | PGEC1 — Programming clock (ICSP) |
| Chân 8 | PGED1 — Programming data (ICSP) |
| Chân 9 | RB5 — General purpose I/O / PGED2 |
| Chân 10 | RB4 — General purpose I/O / PGEC2 |
| Chân 11 | RB3 — General purpose I/O |
| Chân 12 | RB2 — General purpose I/O |
| Chân 13 | RB1 — General purpose I/O |
| Chân 14 | RB0 — General purpose I/O |
| Chân 15 | RB6 — General purpose I/O |
| Chân 16 | RB7 — General purpose I/O |
| Chân 17 | AVDD — Analog power supply |
| Chân 18 | AVSS — Analog ground |
| Chân 19 | VREF+ — ADC positive reference |
| Chân 20 | VREF- — ADC negative reference |
| Chân 21 | AN0/RB8 — Analog input / GPIO |
| Chân 22 | AN1/RB9 — Analog input / GPIO |
| Chân 23 | AN2/RB10 — Analog input / GPIO |
| Chân 24 | AN3/RB11 — Analog input / GPIO |
| Chân 25 | AN4/RB12 — Analog input / GPIO |
| Chân 26 | AN5/RB13 — Analog input / GPIO |
| Chân 27 | AN6/RB14 — Analog input / GPIO |
| Chân 28 | AN7/RB15 — Analog input / GPIO |
| Chân 29 | VDD — Power supply |
| Chân 30 | VSS — Ground |
| Chân 31 | RC0 — General purpose I/O |
| Chân 32 | RC1 — General purpose I/O |
| Chân 33 | RC2 — General purpose I/O |
| Chân 34 | RC3 — General purpose I/O |
| Chân 35 | RC4 — General purpose I/O |
| Chân 36 | RD0 — General purpose I/O |
| Chân 37 | RD1 — General purpose I/O |
| Chân 38 | RD2 — General purpose I/O |
| Chân 39 | RD3 — General purpose I/O |
| Chân 40 | RD4 — General purpose I/O |
| Chân 41 | RD5 — General purpose I/O |
| Chân 42 | RD6 — General purpose I/O |
| Chân 43 | RD7 — General purpose I/O |
| Chân 44 | VUSB — USB voltage reference |
| Chân 45 | D+ — USB D+ data line |
| Chân 46 | D- — USB D- data line |
| Chân 47 | RD11 — General purpose I/O |
| Chân 48 | RD12 — General purpose I/O |
| Chân 49 | RD13 — General purpose I/O |
| Chân 50 | RD14 — General purpose I/O |
| Chân 51 | RD15 — General purpose I/O |
| Chân 52 | VCAP — Internal voltage regulator bypass |
| Chân 53 | RF4 — General purpose I/O |
| Chân 54 | RF5 — General purpose I/O |
| Chân 55 | RF6 — General purpose I/O |
| Chân 56 | RF7 — General purpose I/O |
| Chân 57 | RF8 — General purpose I/O |
| Chân 58 | RF12 — General purpose I/O |
| Chân 59 | RF13 — General purpose I/O |
| Chân 60 | RA0 — General purpose I/O |
| Chân 61 | RA1 — General purpose I/O |
| Chân 62 | RA3 — General purpose I/O |
| Chân 63 | RA4 — General purpose I/O |
| Chân 64 | OSC1/RA2 — Crystal oscillator input |
Ứng dụng tiêu biểu
PIC32MX320F032H-40I/PT phù hợp cho 6 Áp dụngs: USB Human Interface Device (HID), Industrial Sensor Hub, Home Automation Gateway, Low-Cost HMI Display Controller, Portable Data Logger, Educational Development Platform.
USB Human Interface Device (HID)
The PIC32MX320F032H-40I/PT's integrated USB 2.0 full-speed OTG controller with 40 MHz MIPS M4K core and 8 KB SRAM is ideal for USB HID peripherals such as keyboards, mice, and game controllers. The on-chip USB transceiver eliminates the external PHY, reducing BOM by $0.40-$0.80. According to the Microchip PIC32MX3XX/4XX datasheet, the part supports HID, CDC, and mass-storage classes via the Microchip Harmony USB stack. With 32 KB Flash, the device runs typical HID stacks within 16-20 KB leaving headroom for application code. The 53 GPIO easily accommodates button matrices and LED indicators on USB peripherals.
Được đề xuất
Industrial Sensor Hub
The PIC32MX320F032H-40I/PT is well-suited as an industrial sensor hub aggregating analog and digital sensor data. The 10-bit 1 Msps ADC with up to 16 channels handles multiple analog transducers simultaneously, while two UART/SPI/I2C peripherals connect to digital sensors, displays, and Modbus networks. The -40C to +85C industrial temperature rating per the Microchip datasheet allows deployment in factory environments. The 32 KB Flash stores sensor calibration tables, while 8 KB SRAM buffers streaming data before forwarding via UART or USB.
Được đề xuất
Home Automation Gateway
The PIC32MX320F032H-40I/PT makes a cost-effective home automation gateway bridging Wi-Fi/Zigbee modules to local control buses. With 53 GPIO and 2.3-3.6 V operation, it can host multiple UART-connected wireless modules, drive relay outputs, and read digital inputs from wall switches. The 40 MHz MIPS core runs MQTT or CoAP stacks over Ethernet or Wi-Fi via SPI. The TQFP-64 (10x10 mm) package is easy to hand-solder or reflow on standard 2-layer PCBs common in consumer gateway hardware.
Được đề xuất
Low-Cost HMI Display Controller
The PIC32MX320F032H-40I/PT can drive character or small graphic TFT displays as a low-cost HMI controller. The SPI peripheral reaches up to 20 MHz for fast display updates, while the 8 KB SRAM holds frame buffers for small color TFTs. The 32 KB Flash stores multiple language strings, fonts, and HMI state machines. According to the Microchip datasheet, the parallel PMP (Parallel Master Port) interface can drive up to 16-bit displays in addition to SPI/I2C. The 53 GPIO provide touch-screen and button matrix interfacing.
Được đề xuất
Portable Data Logger
The PIC32MX320F032H-40I/PT suits battery-powered data loggers due to its 2.3-3.6 V supply range and multiple low-power modes. The 10-bit ADC captures sensor data while the MCU sleeps between samples, extending battery life to months on a single Li-ion cell. The 8 KB SRAM buffers log entries before flushing to external EEPROM or SD card via SPI. The industrial -40C to +85C temperature rating per Microchip allows deployment in outdoor or automotive environments.
Được đề xuất
Educational Development Platform
The PIC32MX320F032H-40I/PT is commonly used in university courses and hobbyist projects due to its 32-bit MIPS architecture at an 8-bit price point. The Microchip MPLAB X IDE supports the part with the free XC32 compiler, and PICkit 5 debuggers program via the PGECx/PGEDx pins. With 32 KB Flash, students can complete real embedded projects including USB, RTOS, and TCP/IP examples. The 53 GPIO provide ample breadboard access for peripherals.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX320F032H-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 | PIC32MX320F064H-40I/PT | PIC32MX320F032HT-40I/PT | PIC32MX340F128H-40I/PT | PIC32MX320F032H-40V/PT |
|---|---|---|---|---|---|
| Package | TQFP-64 (10x10 mm) | TQFP-64 - same | TQFP-64 - same | TQFP-64 - same | TQFP-64 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 64 KB | 32 KB | 128 KB | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 32 KB | 8 KB |
| CPU Speed | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +105C |
| USB | USB 2.0 OTG FS | USB 2.0 OTG FS | USB 2.0 OTG FS | USB 2.0 OTG FS | USB 2.0 OTG FS |
| ADC | 10-bit 1 Msps | 10-bit 1 Msps | 10-bit 1 Msps | 10-bit 1 Msps | 10-bit 1 Msps |
Bảo phân biệt quan trọng
- Same-family upgrade path with double Flash (vsPIC32MX320F064H-40I/PT)
- Four times the SRAM and Flash for richer applications (vsPIC32MX340F128H-40I/PT)
- Extended temperature range for harsh environments (vsPIC32MX320F032H-40V/PT)
Ghi chú thiết kế
Place a 0.1 uF ceramic decoupling capacitor within 5 mm of every VDD/AVDD pin. Add a single 10 uF bulk capacitor on each power rail near the device. Keep analog (AVSS) and digital grounds connected at a single point under the IC to avoid ground loops in ADC readings. The Microchip PIC32MX3XX/4XX datasheet section 2.4 recommends a 4-layer PCB for best ADC performance but 2-layer boards with proper layout are acceptable for 8-10 effective bits.
Keep the trace length between the ICSP connector and the PGEC1/PGED1 pins (and optionally PGEC2/PGED2 for 4-wire) under 50 mm total per Microchip programming specification. Add 4.7 kohm pull-up resistors on D+ and D- if USB is used. The 48 MHz HSUSB mode requires a 4.7 uF low-ESR capacitor on the VCAP pin to stabilize the on-chip 2.5V regulator; do not omit this capacitor as the USB PLL will fail to lock.
Do not exceed 3.6 V on any VDD or AVDD pin even though digital I/O are 5V-tolerant; only I/O pins tolerate 5V inputs. Always run the configuration bits pragma to set the appropriate oscillator, watchdog, and code-protection settings; failure to do so may leave the device in an unprogrammed state. The 32 KB Flash includes the configuration word and boot Flash regions, leaving approximately 30-31 KB for user code per the Microchip linker scripts. Do not forget to enable the JTAG/debug port via configuration bits when using MPLAB X debugger.
Use the internal 8 MHz FRC oscillator with PLL to reach 40 MHz without an external crystal, saving two GPIOs and BOM cost. If USB is used, the 48 MHz USB clock must be derived from a primary oscillator or the 8 MHz FRC with PLL. The device supports sleep, idle, and deep-sleep modes with wake-up from internal RTCC. Estimated: at 40 MHz active, the core draws ~30 mA; deep-sleep drops to ~30 uA per the Microchip PIC32MX3XX/4XX datasheet DC characteristics section.
Thông tin tuân thủ
RoHS compliant per Microchip product page. Industrial temperature grade -40C to +85C. AEC-Q100 automotive qualification not available for this part - consider PIC32MX320F064H-40I/PT automotive variants if needed.
