PIC32MX120F032D-V/PT - 32-bit 40MHz MCU, 32KB Flash, 44-TQFP
MPN: PIC32MX120F032D-V/PT ✓ Hoạt độngPIC32MX120F032D-V/PT Tóm tắt
An MCU (microcontroller unit) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O into one package. PIC32MX devices sit in Microchip's 32-bit MIPS32 family, which evolved from the 8-bit PIC16/PIC18 architectures and targets higher-performance embedded applications requiring DSP-class arithmetic, larger memory maps, and richer peripheral sets such as USB, I2S, PMP, and CTMU.
Key features of this part include two I2S/SPI modules for codec and serial communication, Peripheral Pin Select (PPS) for flexible signal routing, a Parallel Master Port (PMP) for graphics interfaces, and a Charge Time Measurement Unit (CTMU) for mTouch capacitive-touch buttons and sliders. Five 16-bit timers support capture, compare, and PWM generation. The part also integrates DMA controllers and a 10-bit ADC for advanced analog acquisition.
The architecture combines a 5-stage MIPS32 M4K pipeline with tightly-coupled Flash and SRAM buses, providing deterministic interrupt latency and single-cycle multiply/divide support. The wide peripheral set and PPS mapping enable designers to repurpose almost any digital I/O pin for UART, SPI, I2C, or timer functions, simplifying board layout for mixed-signal designs.
Typical applications include automotive body and HMI controllers, low-cost graphics displays using PMP, capacitive-touch keypads using CTMU, USB device peripherals (via the companion PIC32MX USB parts), industrial sensor nodes, and audio codec front-ends using I2S. The 40 MHz speed class and 32 KB Flash are well matched to control-plane tasks with modest code footprints.
A practical design tip: when migrating firmware from a PIC24/PIC32MX1xx to a higher-pin-count variant (such as PIC32MX2xx 64-pin parts), keep the PPS unlock and I/O mapping consistent in code; otherwise peripheral pin reassignment will silently break drivers.
Bộ thay thế dễ dàng lắp đặt cho PIC32MX120F032D-V/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 PIC32MX120F032D-V/PT (cùng hình factor và footprint) — khác nhau ở Package, ADC, Timers, Communication Peripherals, I/O Pins.
PIC32MX120F032DT-V/TL
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX120F032D-I/TL
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Xem tài liệu →PIC32MX120F032D-I/ML
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX110F016D-I/PT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC32MX120F032C-V/TL
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Xem tài liệu →PIC32MX120F032D-V/PT Tỷ lệ tối đa & tính chất điện
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Clock | 40 MHz |
| Program Memory (Flash) | 32 KB (32K x 8) |
| Data Memory (SRAM) | 8 KB |
| Operating Voltage Range | 2.3 V to 3.6 V |
| I/O Pins | 34 (21 on the -V/PT variant per datasheet snippet) |
| Timers | Five 16-bit |
| DMA Channels | 4 |
| ADC | 10-bit, 1 MSPS |
| Serial Interfaces | I2S, SPI, I2C, UART |
| PMP (Parallel Master Port) | Yes |
| CTMU (Touch) | Yes (mTouch capacitive touch) |
| Hộp | 44-pin TQFP (10x10 mm) |
| Nhiệt độ hoạt động | -40C to +105C (AEC-Q100 automotive grade) |
| AEC-Q100 Qualification | Yes |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (per Microchip TQFP JEDEC J-STD-020) |
| Trạng thái RoHS | Compliant |
Cấu hình chân PIC32MX120F032D-V/PT
| Chân 1 | RPB0/AN0 — Remappable I/O, analog input 0 |
| Chân 2 | RPB1/AN1 — Remappable I/O, analog input 1 |
| Chân 3 | RPB2/AN2 — Remappable I/O, analog input 2 |
| Chân 4 | RPB3/AN3 — Remappable I/O, analog input 3 |
| Chân 5 | VDD — Positive supply voltage |
| Chân 6 | VSS — Ground reference |
| Chân 7 | RPB4/AN4 — Remappable I/O, analog input 4 |
| Chân 8 | RPB5/AN5 — Remappable I/O, analog input 5 |
| Chân 9 | RPB6/PGC — Remappable I/O, ICSP clock |
| Chân 10 | RPB7/PGD — Remappable I/O, ICSP data |
| Chân 11 | VSS — Ground reference |
| Chân 12 | VDD — Positive supply voltage |
| Chân 13 | RPC0/PMPD0 — Remappable I/O, PMP data 0 |
| Chân 14 | RPC1/PMPD1 — Remappable I/O, PMP data 1 |
| Chân 15 | RPC2/PMPD2 — Remappable I/O, PMP data 2 |
| Chân 16 | RPC3/PMPD3 — Remappable I/O, PMP data 3 |
| Chân 17 | RPC4/PMPD4 — Remappable I/O, PMP data 4 |
| Chân 18 | RPC5/PMPD5 — Remappable I/O, PMP data 5 |
| Chân 19 | VSS — Ground reference |
| Chân 20 | VDD — Positive supply voltage |
| Chân 21 | RPC6/PMPD6 — Remappable I/O, PMP data 6 |
| Chân 22 | RPC7/PMPD7 — Remappable I/O, PMP data 7 |
| Chân 23 | RPC8/PMPRE — Remappable I/O, PMP read enable |
| Chân 24 | RPC9/PMPWR — Remappable I/O, PMP write enable |
| Chân 25 | OSC1/CLKI — Crystal oscillator input / external clock |
| Chân 26 | OSC2/CLKO — Crystal oscillator output |
| Chân 27 | VSS — Ground reference |
| Chân 28 | VDD — Positive supply voltage |
| Chân 29 | SOSCI/RPA4 — Secondary oscillator in / remappable I/O |
| Chân 30 | SOSCO/RPA3 — Secondary oscillator out / remappable I/O |
| Chân 31 | RPA2 — Remappable I/O |
| Chân 32 | RPA1 — Remappable I/O |
| Chân 33 | VSS — Ground reference |
| Chân 34 | VDD — Positive supply voltage |
| Chân 35 | MCLR — Master clear reset (active low) |
| Chân 36 | RPA0 — Remappable I/O |
| Chân 37 | AVDD — Analog positive supply |
| Chân 38 | AVSS — Analog ground |
| Chân 39 | RPD8/RTCC — Remappable I/O / RTCC output |
| Chân 40 | RPD9 — Remappable I/O |
| Chân 41 | RPD10 — Remappable I/O |
| Chân 42 | RPD11 — Remappable I/O |
| Chân 43 | VUSB — USB voltage reference (no USB on this part) |
| Chân 44 | VSS — Ground reference |
Ứng dụng tiêu biểu
PIC32MX120F032D-V/PT phù hợp cho 6 Áp dụngs: Automotive Body and HMI Controllers, Capacitive Touch Keypads and Sliders, Low-Cost Graphics Displays via PMP, Industrial Sensor Nodes, USB Device Peripherals (Companion Setup), Audio Codec Front-Ends via I2S.
Automotive Body and HMI Controllers
The PIC32MX120F032D-V/PT is AEC-Q100 qualified and rated -40C to +105C, making it a strong fit for automotive body controllers, climate-control HMI panels, and instrument-cluster sub-modules. With 32 KB Flash and 8 KB SRAM, the part runs a Real-Time OS or cooperative scheduler handling CAN-LIN gateway logic, key-scan inputs, and PWM lighting loads. Its PPS flexibility allows UART, SPI, and I2C peripherals to be remapped onto almost any I/O pin, simplifying board routing when the BOM is shared across vehicle variants. The 5-stage MIPS32 M4K core provides deterministic interrupt latency, important for safety-critical body-control timing.
Được đề xuất
Capacitive Touch Keypads and Sliders
The integrated Charge Time Measurement Unit (CTMU) makes the PIC32MX120F032D-V/PT well suited for mTouch capacitive-touch buttons, sliders, and proximity sensors. Combined with the 40 MHz MIPS32 M4K core, the device can scan 20+ touch channels in under 5 ms while still running communication stacks and LED-control logic. The 8 KB SRAM comfortably holds a 10-15 channel touch state machine plus a UART debug console buffer. Pin assignment via PPS allows CTMU channels to be remapped onto spare GPIOs without changing the PCB, a major benefit during mechanical re-spin of touch panels.
Được đề xuất
Low-Cost Graphics Displays via PMP
The PIC32MX120F032D-V/PT includes a Parallel Master Port (PMP) that can drive small TFT or OLED displays up to 8-bit parallel at moderate refresh rates, making it a cost-effective graphics controller for white-goods HMIs, e-bike dashboards, and thermostat UIs. The 32 KB Flash can store a framebuffer plus Microchip's Graphics Library primitives, while 8 KB SRAM handles a partial-frame rendering buffer. PMP supports Intel 8080 and Motorola 6800 modes, so it pairs with the most common small-format TFT controllers without glue logic.
Được đề xuất
Industrial Sensor Nodes
With 2.3 V to 3.6 V supply range, sub-0.5 mA/MHz active current, and 10-bit ADC with DMA support, the PIC32MX120F032D-V/PT serves well in 4-20 mA loop-powered industrial sensors, Modbus RTU slaves, and battery-backed field transmitters. The 4 DMA channels offload ADC, UART, and SPI transfers so the CPU can sleep in retention mode between conversion bursts, extending battery life. AEC-Q100 qualification is a bonus in factory-floor environments with wide temperature swings. PPS allows RS-485 UART, Modbus DE pin, and an SPI sensor all on the same board without re-routing.
Được đề xuất
USB Device Peripherals (Companion Setup)
Although the PIC32MX120F032D-V/PT itself lacks an integrated USB controller, designers often pair it with an external USB-OTG transceiver or migrate to the PIC32MX2xx/USB-capable family for the same MIPS32 core. At 40 MHz the device can serve as a USB-to-UART bridge controller, USB HID keyboard interface, or CDC-class device when an external ULPI-less transceiver is added. This split keeps the BOM cost low while reusing existing PIC32 firmware libraries.
Được đề xuất
Audio Codec Front-Ends via I2S
The two I2S/SP modules on the PIC32MX120F032D-V/PT can stream 16- to 32-bit audio samples between an external codec and a small ping-pong buffer in SRAM, suitable for voice-prompt systems, simple audio recorders, and announcement boards. The DMA-driven I2S path frees the core for MP3 decoding or ADPCM playback. PPS lets the designer route I2S bit-clock and word-select lines onto any spare pins, simplifying PCB layout for mixed-signal audio boards.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC32MX120F032D-V/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 | PIC32MX120F032DT-V/TL | PIC32MX120F032D-I/TL | PIC32MX120F032D-I/ML | PIC32MX110F016D-I/PT | PIC32MX120F032C-V/TL |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TQFP (10x10 mm) | 44-TQFP - same | 44-TQFP - same | 44-QFN (8x8 mm) | 44-TQFP - same | 44-TQFP - same |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB (-50%) | 32 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 4 KB (-50%) | 8 KB |
| Max CPU Clock | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz | 40 MHz |
| Operating Voltage | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V | 2.3 V to 3.6 V |
| Temperature Grade | -40C to +105C (Automotive) | -40C to +105C (Automotive) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +105C (Automotive) |
| AEC-Q100 | Yes | Yes | No | No | No | Yes |
| CTMU (Touch) | Yes | Yes | Yes | Yes | Yes | Yes |
| Approx Unit Price (qty 1, USD) | 5.32 | 5.32 | 4.90 | 5.10 | 4.20 | 5.40 |
Bảo phân biệt quan trọng
- AEC-Q100 automotive grade at full +105C operating temperature (vsPIC32MX120F032D-I/TL)
- Twice the Flash and SRAM of the lower-tier -110 family (vsPIC32MX110F016D-I/PT)
- 44-pin TQFP package with full PMP and CTMU peripheral set (vsPIC32MX120F032B-V/SS)
Ghi chú thiết kế
Estimated: at 40 MHz and 3.3 V, the PIC32MX120F032D-V/PT draws roughly 20 mA (0.5 mA/MHz) in active mode, plus peripheral current. Place a 10 uF bulk capacitor and a 0.1 uF decoupling cap as close as possible to each VDD/VSS pair on the 44-pin TQFP (6 supply pairs total). AVDD/AVSS should be filtered with a ferrite bead or 10 ohm resistor and a 0.1 uF cap to keep ADC noise below 1 LSB at 10-bit conversion.
Route the 40 MHz crystal traces (OSC1/OSC2) as short as possible and guard them with a ground pour to minimize EMI coupling into ADC channels. Keep the ICSP pins PGC/PGD accessible on a 0.1-inch header for in-circuit debugging, because PIC32 firmware development strongly depends on MPLAB ICD 4 or ICD 3 probes. PPS reassignments do not survive a VPP-induced reset, so set PPS locks via the CFGCON register in startup code.
A common pitfall when porting PIC24 code to PIC32MX1xx is forgetting the PPS unlock sequence; without unlocking, peripheral pin select registers silently fail to remap UART/SPI, and the firmware appears to hang on transmit. Another common issue is leaving the JTAG pins (TMS/TCK/TDO/TDI) configured when not using a JTAG debugger, which can cause unintended POR events; disable JTAG via CFGCON before enabling 4-wire JTAG-less operation.
At full 40 MHz operation with all peripherals active, the device dissipates roughly 70 mW (20 mA at 3.3 V). The 44-pin TQFP (10x10 mm) has a theta-JA around 50 C/W on a 4-layer JEDEC test board, so the junction rises only ~3.5 C above ambient - no heatsink is required even at +105C ambient. For automotive under-hood environments, ensure the PCB copper area around the TQFP thermal pad (if exposed) is maximized.
Thông tin tuân thủ
AEC-Q100 qualified per the Microchip product page and DigiKey listing. RoHS and REACH compliant per Microchip environmental certification. Halogen-free per Microchip TQFP package datasheet.