PIC32MX154F128B-I/SO Microchip Integrated Circuit (Small Outline Packages) In Stock
Microchip PIC32MX154F128B-I/SO is a 32-bit MIPS-based microcontroller with 128 KB Flash, 32 KB RAM, and a 50 MHz maximum clock frequency in a 28-pin SOIC package. It integrates a 10-bit ADC, UART, SPI/I2S, I2C interfaces, DMA channels, and a VBATT pin for real-time clock backup. Suitable for mid-range embedded control, sensor interfacing, and audio applications.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 28
- Lifecycle
- ACTIVE
- Datasheet
- PIC32MX154F128B-I/SO Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $3.8000(MOQ 5)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 128 KB Flash and 32 KB RAM with 12 KB dedicated boot flash for secure firmware updates
- 50 MHz MIPS32 M4K core with DMA channels for high-throughput data movement without CPU overhead
- Integrated 10-bit ADC plus UART, SPI/I2S, and I2C peripherals in a compact 28-pin SOIC package
- VBATT pin enables battery-backed real-time clock operation during main supply power loss
Applications
The PIC32MX154F128B-I/SO fits industrial sensor hubs, portable data loggers, and home automation controllers that need 32-bit processing power within a small 28-pin SOIC footprint. Its SPI/I2S interface supports digital audio codecs and MEMS microphones in voice-controlled or audio streaming products. The device also suits UART-based gateway designs connecting sensors to cloud platforms via wireless modules.
Specifications
| Manufacturer Package Code | SOIC-28 |
| Factory Lead Time | 6Weeks |
| YTEOL | 18 |
| Has ADC | YES |
| Additional Feature | 12 KB BOOT FLASH MEMORY AVAILABLE |
| Bit Size | 32 |
| CPU Family | PIC32 |
| Clock Frequency-Max | 50MHz |
| DAC Channels | NO |
| DMA Channels | YES |
| JESD-30 Code | R-PDSO-G28 |
| JESD-609 Code | e3 |
| Number of I/O Lines | 21 |
| On Chip Program ROM Width | 8 |
| PWM Channels | YES |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP28,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| ROM Programmability | FLASH |
| Screening Level | TS 16949 |
| Speed | 72MHz |
| Supply Voltage-Max | 3.6V |
| Supply Voltage-Min | 2.5V |
| Supply Voltage-Nom | 3.3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | 3A991.A.2 |
| HTS Code | 8542.31.00.01 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PIC32MX154F128B-I/SO:
RISC Microcontroller, 32-Bit, FLASH, PIC32 CPU, 72MHz, CMOS, PDSO28
Frequently Asked Questions
How does the 50 MHz PIC32MX154F128B compare to 8-bit PICs for sensor data processing tasks?
Running at up to 50 MHz with a 32-bit MIPS32 M4K core, the PIC32MX154F128B executes sensor filtering algorithms many times faster than 8-bit PIC devices at equivalent clock speeds. Its 32 KB RAM accommodates larger data buffers, and the onboard DMA channels offload memory transfers so the CPU focuses on computation, making it suitable for FFT-based vibration monitoring or multi-channel 10-bit ADC sampling at high rates.
What backup capability does the VBATT pin provide during a power outage?
The VBATT pin supplies a separate power domain that keeps the real-time clock and associated registers running when the main VDD supply is removed. A small coin cell or supercapacitor connected to VBATT maintains accurate timekeeping through outages in data loggers, industrial controllers, and metering devices, eliminating the need for an external RTC chip and its associated I2C overhead.
Can the PIC32MX154F128B-I/SO handle I2S audio streaming for a Bluetooth speaker design?
Yes, the integrated SPI/I2S interface on the PIC32MX154F128B-I/SO supports I2S digital audio at standard sample rates such as 44.1 kHz or 48 kHz. Combined with DMA-driven data transfers from the 32 KB RAM buffer, the device can feed a stereo DAC or audio codec without dropping samples, making it practical for small Bluetooth speaker receivers and voice-prompt modules at 3.3 V supply.
Does the 28-pin SOIC package of the PIC32MX154F128B-I/SO fit a compact two-layer PCB for a wearable device?
The 28-pin SOIC package measures approximately 17.9 mm × 7.5 mm with 1.27 mm pitch leads, which is larger than QFN alternatives but offers easy hand-soldering and rework. For wearable applications where PCB area is limited, the SOIC footprint may require a two-layer board of at least 30 mm × 25 mm to accommodate the package plus decoupling capacitors on the 3.3 V power pins.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 5+ | $5.3000 | $26.50 |
| 25+ | $4.9500 | $123.75 |
| 100+ | $4.3500 | $435.00 |
| 1000+ | $4.0000 | $4000.00 |
| 5000+ | $3.8000 | $19000.00 |
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