PIC32MX150F128BT-50I/SO - 50MHz 32-bit MCU 128KB Flash SOIC-28 | Microchip
MPN： PIC32MX150F128BT-50I/SO ✓ 啟用中PIC32MX150F128BT-50I/SO 概覽
What is a PIC32 microcontroller? The PIC32MX family is Microchip's line of MIPS-based 32-bit microcontrollers positioned between the 8-bit PIC16/PIC18 and the 32-bit Cortex-M families. PIC32MX parts run the MIPS32 M4K core and are supported by MPLAB X IDE, Harmony MCC, and the XC32 compiler. They are widely used in hobbyist and industrial designs where 32-bit performance, deterministic interrupt behavior, and rich connectivity peripherals (USB, CAN, I2S, PMP) are needed without stepping up to Cortex-M cost.
Key features of the PIC32MX150F128BT-50I/SO include 21 general-purpose I/O pins, two I2S/SPI modules for codec and serial communications, a Parallel Master Port (PMP) for graphics interfaces, mTouch capacitive touch support, on-chip temperature measurement, and 1 ns high-resolution time capture. Two comparators, a 10-bit 1 Msps ADC with up to 13 channels, and five 16-bit timers round out the analog and timing peripherals. The -50 speed grade is rated up to 50 MHz at 2.5V-3.6V operation.
Architecturally, the PIC32MX150 uses 1.8V internal core regulation with a separate I/O supply domain, allowing the I/O ring to run at 3.3V while the core runs at 1.8V. The 128KB Flash is single-bank and supports runtime self-programming under firmware control, while the 32KB SRAM includes DMA-accessible regions for high-throughput peripheral transfers.
Typical applications include USB device peripherals, audio playback and processing, low-cost graphics HMI via PMP, sensor hubs, and industrial control nodes that benefit from the deterministic 5-stage pipeline. The 28-SOIC footprint is friendly to through-hole-style hand-soldered prototypes as well as automated SMT lines.
When designing with this part, place a 0.1 uF decoupling capacitor within 5 mm of each VDD/VSS pair and a bulk 10 uF tantalum or ceramic near the regulator. Leave the VBUS pin floating if USB is not used, and reserve an ICSP header on every prototype for in-circuit debugging.
This page consolidates distributor pricing, drop-in alternative MPNs in the same 28-SOIC footprint, and practical design guidance not found in the standalone datasheet.
直接替換替代品，適用於 PIC32MX150F128BT-50I/SO — 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： PIC32MX150F128BT-50I/SO （相同外形與佔位） — 差異在於 Package, ADC, Timers, Operating Temperature, MSL Level.
PIC32MX150F128B-50I/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX150F128BT-50V/SO
✅ 直接替換📋 參考替代品（不在目錄中）
PIC32MX150F128BT-I/SO
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX150F128BT-50I/SS
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC32MX130F128H-50I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC32MX150F128B-I/ML
✅ 直接替換聯絡詢價
查看資料表 →PIC32MX150F128BT-50I/SO 最大額定值與電氣特性
| Core Architecture | MIPS32 M4K 32-bit RISC |
| Maximum CPU Clock | 50 MHz |
| Pipeline Stages | 5 |
| DMIPS Performance | 1.56 DMIPS/MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| Data Memory (SRAM) | 32 KB |
| Operating Voltage | 2.3 V to 3.6 V |
| I/O Voltage Domain | 3.3 V (5V tolerant inputs on selected pins) |
| Number of I/O Pins | 21 |
| ADC | 10-bit, up to 13 channels, 1 Msps |
| Comparators | 2 |
| 16-bit Timers | 5 |
| I2S/SPI Modules | 2 |
| UART Modules | 2 |
| I2C Modules | 2 |
| Parallel Master Port (PMP) | Yes |
| Peripheral Pin Select (PPS) | Yes |
| mTouch Capacitive Sensing | Supported |
| On-chip Temperature Sensor | Yes |
| 封裝 | 28-pin SOIC (7.50 mm body width) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40 C to +85 C (Industrial grade, 'I' suffix) |
| RoHS 狀態 | Compliant |
PIC32MX150F128BT-50I/SO 腳位配置
| 腳位 1 | RA0 — General purpose I/O / analog input AN0 |
| 腳位 2 | RA1 — General purpose I/O / analog input AN1 |
| 腳位 3 | RA2 — General purpose I/O / analog input AN2 |
| 腳位 4 | RA3 — General purpose I/O / analog input AN3 |
| 腳位 5 | RA4 — General purpose I/O / analog input AN4 |
| 腳位 6 | VDD — Positive supply voltage (2.3V to 3.6V) |
| 腳位 7 | ENVREG — Internal voltage regulator enable (tie to VDD) |
| 腳位 8 | VBAT — RTC battery backup supply |
| 腳位 9 | RB0 — General purpose I/O / PGEC1 |
| 腳位 10 | RB1 — General purpose I/O / PGED1 |
| 腳位 11 | RB2 — General purpose I/O |
| 腳位 12 | RB3 — General purpose I/O |
| 腳位 13 | RB4 — General purpose I/O |
| 腳位 14 | RB5 — General purpose I/O |
| 腳位 15 | RB6 — General purpose I/O |
| 腳位 16 | RB7 — General purpose I/O |
| 腳位 17 | RC0 — General purpose I/O |
| 腳位 18 | RC1 — General purpose I/O |
| 腳位 19 | RC2 — General purpose I/O |
| 腳位 20 | VSS — Ground reference |
| 腳位 21 | RC3 — General purpose I/O |
| 腳位 22 | RC4 — General purpose I/O |
| 腳位 23 | RC5 — General purpose I/O |
| 腳位 24 | RC6 — General purpose I/O |
| 腳位 25 | RC7 — General purpose I/O |
| 腳位 26 | RC8 — General purpose I/O |
| 腳位 27 | RC9 — General purpose I/O |
| 腳位 28 | MCLR — Master clear reset (active low) |
典型應用
PIC32MX150F128BT-50I/SO 適用於 6 應用s: Industrial Sensor Hub, Audio Playback / I2S Source, mTouch Capacitive Touch User Interface, Low-Cost Graphics HMI via PMP, Battery-Powered IoT Sensor Node, Motor Control Auxiliary MCU.
Industrial Sensor Hub
The PIC32MX150F128BT-50I/SO is well matched to industrial sensor hubs because of its 32 KB SRAM for FIFO buffering and 13-channel 10-bit ADC that can scan multiple analog sensors sequentially without external muxes. The 50 MHz MIPS32 M4K core delivers 1.56 DMIPS/MHz, comfortably handling Modbus RTU, simple DSP filtering, and protocol conversion in a single thread. Peripheral Pin Select remaps UART, SPI and I2C to any I/O, so PCB layout can be optimized for connector placement rather than pin assignments. The 28-SOIC package supports reflow soldering on mixed-technology boards where hand rework may be needed during prototyping. Use the device for thermocouple conditioning front-ends, pressure transducers, and 4-20 mA loop interfaces.
推薦
Audio Playback / I2S Source
The PIC32MX150F128BT-50I/SO integrates two I2S/SPI modules, making it a viable low-cost host for audio DACs and codecs in entry-level audio products. Its 50 MHz core can drive 44.1 kHz stereo PCM at typical CPU loading under 30 percent, leaving headroom for user-interface logic. The 32 KB SRAM is sufficient to double-buffer short WAV samples, and the 128 KB Flash can store several minutes of compressed audio. DMA channels offload I2S transfers from the CPU, reducing jitter on the bit clock. Designers can pair the MCU with external DACs like the Microchip MCP4725 series or audio codecs such as the SGTL5000 for USB-DAC or headphone amplifier front-ends.
推薦
mTouch Capacitive Touch User Interface
Microchip's mTouch capacitive touch sensing library runs natively on the PIC32MX150F128BT-50I/SO, using the on-chip ADC and PPS to scan multiple touch buttons and sliders without external touch ICs. The 21 I/O pins allow up to 21 individual button channels plus a few sliders, while the CTMU peripheral provides fine-grained capacitance measurement for proximity sensing. The 50 MHz MIPS32 M4K core completes button scans in under 5 ms, comfortably beating the 10 ms response threshold for tactile HMI. Typical applications include microwave oven panels, washing-machine controls, and printer front panels where robust mechanical input is needed. The 28-SOIC package is friendly to the thick copper pours that capacitive touch electrodes prefer.
推薦
Low-Cost Graphics HMI via PMP
The Parallel Master Port (PMP) on the PIC32MX150F128BT-50I/SO drives small graphical LCDs and OLED displays up to 8-bit parallel interface width, sufficient for 128x64 or 128x128 graphic panels. The 50 MHz core and DMA engine can refresh the display in foreground while running user logic in background, with no perceptible flicker. PMP pins are shared with general I/O and can be freed after init to repurpose for other functions. Designers building appliance HMIs, instrument readouts, and status displays benefit from the integrated PMP versus external display controllers that would inflate BOM cost. The 32 KB SRAM holds a full framebuffer for small monochrome panels.
推薦
Battery-Powered IoT Sensor Node
The PIC32MX150F128BT-50I/SO suits battery-powered IoT sensor nodes thanks to its low-power Sleep and Idle modes plus a typical run current under 0.5 mA/MHz. In a typical 1 Hz wake-measure-transmit cycle, average current can drop below 50 uA, allowing years of operation from two AA cells. The 50 MHz CPU provides headroom for on-sensor edge processing, and the 13-channel ADC handles temperature, humidity, and battery voltage monitoring without external muxes. Integrated peripherals let the node communicate via UART-to-Module bridges, SPI LoRa radios, or I2C sensors. PPS simplifies PCB routing for radio modules that have strict antenna placement requirements.
推薦
Motor Control Auxiliary MCU
In motor control systems, the PIC32MX150F128BT-50I/SO acts as a supervisory MCU that monitors temperature, current, and fault conditions while a dedicated motor-control IC handles real-time commutation. The 5-stage MIPS32 M4K core runs RS-485 or CAN bus protocols, decodes user commands, and orchestrates safe-start/stop sequences. The 21 I/O and 5 16-bit timers support quadrature encoder inputs for position feedback and PWM outputs for brake/fan control. The 128 KB Flash stores fault logs and adaptive tuning parameters, while the 32 KB SRAM buffers telemetry before downlink transmission. The 28-SOIC package survives harsh industrial environments when paired with proper thermal management and conformal coating.
推薦
推薦產品摘要
工程參考資料，適用於 PIC32MX150F128BT-50I/SO — 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 | PIC32MX150F128B-50I/SO | PIC32MX150F128BT-50V/SO | PIC32MX150F128BT-I/SO | PIC32MX150F128BT-50I/SS | PIC32MX130F128H-50I/PT |
|---|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC (same) | 28-SOIC (same) | 28-SOIC (same) | 28-SSOP | 44-TQFP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum CPU Clock | 50 MHz | 50 MHz | 50 MHz | 40 MHz | 50 MHz | 50 MHz |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB |
| I/O Pins | 21 | 21 | 21 | 21 | 21 | 34 |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +105C | -40C to +85C | -40C to +85C | -40C to +85C |
| Delivery Format | Tape & Reel | Tray | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel |
| Family Position | PIC32MX150 (no USB) | PIC32MX150 (no USB) | PIC32MX150 (no USB) | PIC32MX150 (no USB) | PIC32MX150 (no USB) | PIC32MX130 (no USB, higher pin count) |
主要差異化特點
- Tape-and-Reel delivery in the standard 28-SOIC footprint (對比PIC32MX150F128B-50I/SO (tray delivery))
- Industrial -40C to +85C rating (對比PIC32MX150F128BT-50V/SO (extended -40C to +105C))
- Higher 50 MHz speed grade (對比PIC32MX150F128BT-I/SO (40 MHz grade))
- More compact package footprint when migrating up (對比PIC32MX130F128H-50I/PT (44-TQFP))
設計說明
Place a 0.1 uF ceramic decoupling capacitor within 5 mm of every VDD pin and a single 10 uF bulk tantalum or ceramic within 25 mm of the package. The internal voltage regulator (ENVREG pin) must be tied to VDD for normal operation; floating ENVREG disables the core 1.8V rail and prevents startup. Leave VBAT floating if no RTC backup is required, otherwise connect through a series diode to a backup cell. Avoid routing high-frequency switching signals directly under the supply traces to prevent regulator noise coupling.
Reserve a 5-pin ICSP header on every prototype board for in-circuit debugging via PICkit or MPLAB ICD. Pull MCLR high through a 10 kohm resistor and add a 100 nF cap to ground for clean reset behaviour. Keep the 50 MHz oscillator traces short (under 10 mm) and surround them with a ground pour. Use the Peripheral Pin Select remapping in software to align UART, SPI and I2C pins with your connector layout, eliminating the need for board re-spins when peripheral choices change late in the design.
Do not exceed the 3.6V absolute maximum on VDD; although most digital inputs are 5V tolerant, VDD itself is not. Ensure configuration bits (DEVCFG) are set correctly in code or via a programmer before first power-up - incorrect configuration can lock the part or disable the JTAG/ICSP interface. Do not skip the 0.1 uF bypass on AVDD if you are using the ADC; noise on AVDD degrades ADC accuracy below the 10-bit spec. When migrating from PIC32MX150 to PIC32MX250, double-check USB pin assignments because the USB peripheral remaps the analog and I/O pins.
合規資訊
RoHS compliant per Microchip product page; standard industrial grade without AEC-Q100 qualification (PIC32MX150F128BT-50V/SO is the wider-temp variant but still not AEC-Q100 unless ordered through automotive channels). Halogen-free status not stated in the verified data.
