PIC32MX150F128B-50I/SS - 50MHz 32-bit MCU 128KB Flash | Microchip
料号： PIC32MX150F128B-50I/SS ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.3 | $5.30 |
| 10 | $4.85 | $48.50 |
| 100 | $4.2 | $420.00 |
| 500 | $3.65 | $1,825.00 |
| 1,000 | $3.2 | $3,200.00 |
PIC32MX150F128B-50I/SS 概述
A 32-bit microcontroller (MCU) is a single-chip computer that integrates a 32-bit CPU core, Flash program memory, SRAM data memory, and a rich peripheral set (ADC, timers, communication controllers, GPIO) into one package. MCUs belong to the broader hierarchy of microcontrollers -> embedded processors -> semiconductors, and 32-bit MCUs are typically chosen when 8-bit or 16-bit devices lack the performance, address space, or peripheral mix required by the application.
Key specifications include a 50 MHz maximum CPU clock, 1.56 DMIPS/MHz performance, sub-0.5 mA/MHz active current, a 10-bit 1 Msps ADC with up to 28 channels, two I2S/SPI modules, USB 2.0 full-speed device/host/OTG, a Parallel Master Port (PMP), and Peripheral Pin Select (PPS) for flexible signal routing. The Charge Time Measurement Unit (CTMU) supports mTouch capacitive touch buttons/sliders and provides 1 ns high-resolution time measurement.
Architecturally, the device uses a Harvard-style MIPS32 M4K core with hardware multiply/divide, a 5-stage pipeline, and tightly-coupled prefetch cache to sustain 1.56 DMIPS/MHz at 50 MHz. The wide peripheral integration reduces external component count and PCB area, while the 2.3-3.6 V supply range supports both 3.3 V and battery-powered designs.
Typical applications include consumer electronics with USB connectivity, industrial control with capacitive touch HMIs, low-cost audio playback using I2S codecs, USB graphics terminals using PMP-driven LCDs, sensor hubs, and small-form-factor IoT endpoints that need more headroom than 8-bit MCUs but lower cost than Cortex-M4 parts.
Designers should note that the 28-pin SSOP variant limits available I/O compared to 36/44-pin cousins, so pin allocation matters; PPS allows remapping most digital peripherals to different pins, simplifying PCB layout. Decoupling, ICSP programming header placement, and VDD/VSS pin pairing per the datasheet layout guidelines are critical for noise-free operation.
This page synthesizes distributor pricing as of 2026-10-01, drop-in same-package alternatives from the PIC32MX1xx/2xx family, and practical design notes not found on the manufacturer datasheet cover page.
直接替换替代料： PIC32MX150F128B-50I/SS ——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： PIC32MX150F128B-50I/SS （相同外形与封装尺寸） ——差异在于 ADC, Package, Timers, Operating Temperature, Core Architecture.
快速对比工具——选择替代料号进行并排对比：
PIC32MX250F128B-50I/SS
✅ 直接替换✓ 有现货
$4.1 / 个
查看数据手册 →PIC32MX130F128B-50I/SS
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX150F128BT-50I/SS
✅ 直接替换✓ 有现货
$3.46 / 个
查看数据手册 →PIC32MX150F128B-I/SS
✅ 直接替换✓ 有现货
$2.65 / 个
查看数据手册 →PIC32MX170F256B-50I/SS
✅ 直接替换📋 参考替代料（不在目录中）
PIC32MX150F128B-50I/SS 最大额定值与电气特性
| Core | MIPS32 M4K 32-bit RISC |
| Maximum CPU Clock | 50 MHz |
| Performance | 1.56 DMIPS/MHz |
| Program Flash | 128 KB |
| Data SRAM | 32 KB |
| 电源电压 | 2.3 V to 3.6 V |
| Active Current | < 0.5 mA/MHz |
| ADC | 10-bit, 1 Msps |
| I2S/SPI Modules | 2 |
| USB | USB 2.0 Full-Speed Device/Host/OTG |
| Peripheral Pin Select | Yes (PPS) |
| Parallel Master Port | Yes (PMP) |
| CTMU | Yes (mTouch + 1 ns time measurement) |
| 工作温度 | -40C to +85C (Industrial) |
| 封装 | 28-pin SSOP (5.30 mm body) |
| RoHS 状态 | Compliant |
PIC32MX150F128B-50I/SS 引脚配置
| 引脚 1 | MCLR — Master Clear (reset) input, active-low |
| 引脚 2 | PGED3/AN0/RPB0 — ICSP data / analog input / GPIO |
| 引脚 3 | PGEC3/AN1/RPB1 — ICSP clock / analog input / GPIO |
| 引脚 4 | AN2/RPB2/SDA2 — Analog input / GPIO / I2C2 SDA (PPS) |
| 引脚 5 | AN3/RPB3/SCL2 — Analog input / GPIO / I2C2 SCL (PPS) |
| 引脚 6 | AN4/RPB4 — Analog input / GPIO |
| 引脚 7 | AN5/RPB5 — Analog input / GPIO |
| 引脚 8 | VSS — Ground reference |
| 引脚 9 | OSC1/CLKI/RPA15 — Crystal oscillator input or external clock |
| 引脚 10 | OSC2/CLKO/RPA14 — Crystal oscillator output |
| 引脚 11 | VDD — Positive supply voltage (2.3-3.6 V) |
| 引脚 12 | PGEC1/AN6/RPB6 — ICSP clock / analog / GPIO |
| 引脚 13 | PGED1/AN7/RPB7 — ICSP data / analog / GPIO |
| 引脚 14 | AN8/RPB8 — Analog input / GPIO |
| 引脚 15 | AN9/RPB9 — Analog input / GPIO |
| 引脚 16 | TMS/AN10/RPB10 — JTAG TMS / analog / GPIO |
| 引脚 17 | TCK/AN11/RPB11 — JTAG TCK / analog / GPIO |
| 引脚 18 | TDI/AN12/RPB12 — JTAG TDI / analog / GPIO |
| 引脚 19 | VSS — Ground reference |
| 引脚 20 | TDO/AN13/RPB13 — JTAG TDO / analog / GPIO |
| 引脚 21 | USBID/RPB14 — USB OTG ID / GPIO |
| 引脚 22 | VBUS/RPB15 — USB VBUS sense / GPIO |
| 引脚 23 | D-/RGMB0 — USB D- differential data |
| 引脚 24 | D+/RGMBA1 — USB D+ differential data |
| 引脚 25 | RPA0 — GPIO / peripheral function via PPS |
| 引脚 26 | RPA1 — GPIO / peripheral function via PPS |
| 引脚 27 | VSS — Ground reference |
| 引脚 28 | VDD — Positive supply voltage (2.3-3.6 V) |
典型应用
PIC32MX150F128B-50I/SS 适用于 6 应用s: USB Audio Playback Device, Capacitive Touch HMI Panel, Industrial Control with PMP Graphic LCD, USB Sensor Hub / Data Logger, Low-Cost IoT Endpoint with USB Diagnostics, Consumer Electronics with Audio Playback.
USB Audio Playback Device
The PIC32MX150F128B-50I/SS suits USB audio playback peripherals because it integrates a USB 2.0 Full-Speed OTG controller plus two I2S/SPI modules that drive external DACs such as the PCM5102A. At 50 MHz the MIPS32 M4K core delivers 78 DMIPS, enough to handle USB isochronous streaming and on-the-fly sample-rate conversion. The 32 KB SRAM holds USB endpoint buffers and PCM ring buffers without external memory. A typical design uses the MCU as USB Device, streams PCM via I2S to the DAC, and uses one timer for PLL-free MCLK generation via PWM. Compared to a Cortex-M0 solution, the PIC32 path eliminates an external crystal for many DACs.
推荐
Capacitive Touch HMI Panel
The PIC32MX150F128B-50I/SS includes the CTMU peripheral supporting mTouch capacitive touch buttons and sliders, ideal for industrial HMIs replacing mechanical switches. The CTMU provides 1 ns time measurement resolution, enabling reliable proximity and moisture-compensated touch sensing with no external timer IC. At 50 MHz the core services 20+ touch channels at 100 Hz scan rate while still driving a UART-based HMI link. The wide 2.3-3.6 V supply range supports 3.3 V industrial backplanes. Designs use PPS to remap the CTMU outputs and free analog pins for ADC-based temperature compensation.
推荐
Industrial Control with PMP Graphic LCD
The PIC32MX150F128B-50I/SS Parallel Master Port (PMP) interfaces directly to graphical LCDs and external parallel memory, enabling low-cost graphic terminals and operator panels. At 50 MHz the core sustains 78 DMIPS, easily rendering menus over an 8-bit PMP bus to a 320x240 QVGA LCD. The 128 KB Flash stores fonts and bitmaps; 32 KB SRAM accommodates frame buffers in partial-update schemes. PPS allows flexible assignment of PMP control signals (RD, WR, RS, CS) to free digital I/O for keypad scanning.
推荐
USB Sensor Hub / Data Logger
The PIC32MX150F128B-50I/SS USB OTG controller combined with its 1 Msps 10-bit ADC enables compact USB sensor hubs and data loggers. The MIPS32 M4K core at 50 MHz samples up to 1 Msps while running USB CDC virtual COM port firmware. The 128 KB Flash hosts USB stack plus sensor-processing code; 32 KB SRAM serves as ring buffer for USB-to-UART or USB-to-I2C bridging. A typical design reads analog sensors, formats data via USB, and uses PPS to map UART/I2C to convenient PCB locations.
推荐
Low-Cost IoT Endpoint with USB Diagnostics
The PIC32MX150F128B-50I/SS fits IoT endpoints needing USB for firmware update or diagnostics while staying below Cortex-M4 cost. The 50 MHz core, 128 KB Flash, and 32 KB SRAM handle MQTT-over-TCP via external Wi-Fi module (e.g., ATWINC1500) over SPI, with USB accessible for provisioning. Sub-0.5 mA/MHz active current keeps sleep-mode battery life competitive. PPS remaps SPI to a 4-wire bus alongside the Wi-Fi IRQ, freeing GPIOs for sensor I/O.
推荐
Consumer Electronics with Audio Playback
The PIC32MX150F128B-50I/SS targets consumer audio accessories such as USB speakers, headphones with DACs, and Bluetooth audio dongles that stream decoded PCM over I2S. The two I2S modules support simultaneous input and output for full-duplex headset designs. USB Full-Speed handles UAC1 audio class at 48 kHz/16-bit without compression. Wide 2.3-3.6 V operation supports direct Li-Ion battery use, and PPS remaps the audio bit-clock to MCU pins that route cleanly to the DAC PCB side.
推荐
推荐产品汇总
工程参考数据： PIC32MX150F128B-50I/SS ——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 | PIC32MX250F128B-50I/SS | PIC32MX130F128B-50I/SS | PIC32MX150F128BT-50I/SS | PIC32MX150F128B-I/SS | PIC32MX170F256B-50I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SSOP | 28-pin SSOP (same) | 28-pin SSOP (same) | 28-pin SSOP (same) | 28-pin SSOP (same) | 28-pin SSOP (same) |
| Maximum CPU Clock | 50 MHz | 50 MHz | 50 MHz | 50 MHz | 40 MHz | 50 MHz |
| Program Flash | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 256 KB |
| Data SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 64 KB |
| USB OTG | Yes (USB 2.0 FS OTG) | Yes | No | Yes | Yes | Yes |
| CTMU / mTouch | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
关键差异点
- USB OTG on a 28-pin SSOP 50 MIPS MCU （对比 PIC32MX130F128B-50I/SS)
- Balanced Flash/RAM at lowest cost point with USB （对比 PIC32MX170F256B-50I/SS)
- Industrial temperature grade on USB-capable 28-pin SSOP （对比 PIC32MX150F128BT-50I/SS)
设计说明
Place a 10 uF bulk capacitor plus a 0.1 uF ceramic decoupling cap adjacent to every VDD pin (pins 11 and 28 on the 28-pin SSOP). The PIC32MX150F128B-50I/SS draws transient bursts during USB packet transmit, so insufficient decoupling causes brownouts on VDD and USB enumeration failures. A ferrite bead on VDD is recommended when the rail is shared with RF or noisy digital circuitry.
Locate the ICSP connector so that PGEC1/PGED1 (pins 12/13) are within 100 mm of the programmer. Microchip recommends a 4.7 kohm pull-up on MCLR (pin 1) with a 100 nF cap to ground for noise immunity. Trace the USB D+/D- (pins 23/24) as a 90 ohm differential pair; keep total length under 50 mm and avoid splitting reference planes under the pair.
Do not forget to configure the PPS registers before using remapped peripherals - peripherals default to pins that may not be physically routed on the 28-pin SSOP. Always verify the ANSEL register clears analog bits on pins used for digital I/O. Per the Microchip PIC32MX1xx/2xx family datasheet (DS60001168L), the 28-pin variant exposes fewer peripherals simultaneously than 36/44-pin cousins, so plan pin allocation before writing code.
合规信息
RoHS and REACH compliant per Microchip product declaration. Industrial -40C to +85C temperature grade; not AEC-Q100 qualified - not intended for automotive safety-critical applications.
