PIC32MX230F128LT-I/PF - 128KB Flash 32-bit MCU | Microchip 100-TQFP
MPN: PIC32MX230F128LT-I/PF ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.95 | $5.95 |
| 10 | $5.45 | $54.50 |
| 100 | $4.85 | $485.00 |
| 500 | $4.35 | $2,175.00 |
| 1,000 | $3.95 | $3,950.00 |
PIC32MX230F128LT-I/PF Overview
A microcontroller (MCU) is a single-chip computer containing a processor core, program memory (Flash), working memory (SRAM), and integrated peripherals. The PIC32MX230 belongs to the MIPS32 M4K family - a Harvard-architecture 32-bit RISC core positioned between 16-bit PIC24F0/33F MCUs and the higher-end Cortex-M MCUs. It is designed for embedded applications that need 32-bit math performance and USB connectivity without the cost of Cortex-M4 devices.
Key features include Peripheral Pin Select (PPS) allowing flexible remapping of digital peripherals to any I/O pin, a Parallel Master Port (PMP) for graphics interfaces with dual buffers, a Charge Time Measurement Unit (CTMU) for capacitive touch sensing, and Real-Time Clock and Calendar (RTCC) with calendar mode. The device supports up to 50 MHz operation and includes JTAG and 2-wire programming/debug interfaces.
The architecture combines a 5-stage pipeline MIPS32 core with a multi-vector interrupt controller and DMA for deterministic real-time response. With 83 DMIPS performance at 50 MHz and dedicated USB 2.0 full-speed OTG hardware, the PIC32MX230F128L family targets applications requiring USB connectivity, audio codec interfacing, and modest processing throughput without external peripherals.
Typical applications include USB audio devices, capacitive touch human-machine interfaces (HMI), industrial control with USB, low-cost graphics terminals using PMP, sensor hubs with USB, and consumer USB peripherals. The wide peripheral integration reduces bill of materials by eliminating external codec, touch, and USB interface ICs.
Design consideration: PPS greatly simplifies PCB layout by allowing remapping of UART, SPI, I2C and other peripherals after PCB layout is finalized - if a routing conflict arises, reassign pins in code rather than respinning the board. Always consult the I/O Multiplexing table in the datasheet for PPS limitations.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet - allowing engineers to evaluate second sources and PCB reuse opportunities across the PIC32MX1xx/2xx family.
Drop-in alternatives for PIC32MX230F128LT-I/PF — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC32MX230F128LT-I/PF (same form factor and footprint) — differing in ADC, Parallel Master Port (PMP), UART Modules, Operating Temperature Range, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC32MX230F128L-I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX230F128L-50I/PF
✅ Drop-In✓ In Stock
$2.71 / Unit
View Datasheet →PIC32MX170F512LT-I/PF
✅ Drop-In✓ In Stock
$4.05 / Unit
View Datasheet →PIC32MX170F512L-I/PF
✅ Drop-In✓ In Stock
$6.45 / Unit
View Datasheet →PIC32MX150F256LT-I/PF
✅ Drop-In✓ In Stock
$4.55 / Unit
View Datasheet →PIC32MX130F128L-I/PF
✅ Drop-In📋 Reference alternative (not in catalog)
PIC32MX230F128LT-I/PF Maximum Ratings & Electrical Characteristics
| Core Architecture | MIPS32 M4K (32-bit RISC) |
| Maximum CPU Speed | 50 MHz (83 DMIPS) |
| Flash Program Memory | 128 KB (128K x 8) |
| SRAM | 16 KB |
| Supply Voltage (VDD) | 2.3 V to 3.6 V |
| Operating Temperature | -40 C to +85 C (Industrial) |
| ADC | 10-bit, up to 1 Msps, up to 28 channels |
| USB | USB 2.0 Full-Speed OTG |
| I2S Modules | 2 |
| SPI Modules | 4 |
| UART Modules | 5 |
| I2C Modules | 4 |
| PPS (Peripheral Pin Select) | Yes |
| Parallel Master Port (PMP) | Yes (dual read/write buffers) |
| CTMU (Touch) | Yes |
| RTCC | Yes (calendar mode) |
| DMA Channels | 4 |
| Package | 100-pin TQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC32MX230F128LT-I/PF 100-pin tqfp (14x14 mm) Pin Configuration Guide
Pin configuration for PIC32MX230F128LT-I/PF (100-pin tqfp (14x14 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for PIC32MX230F128LT-I/PF.
Refer to the datasheet for full pin configuration.
Typical Applications
PIC32MX230F128LT-I/PF is suitable for 7 applications: USB Audio Headset / Dongle, Capacitive Touch HMI Panel, Industrial USB Sensor Hub, Low-Cost Graphics Terminal (PMP), USB MIDI Controller, USB-to-UART / SPI Bridge, IoT Sensor Node with USB Debug.
USB Audio Headset / Dongle
The PIC32MX230F128LT-I/PF fits USB audio headsets and dongles because it integrates USB 2.0 Full-Speed OTG with on-chip transceiver plus two I2S modules for direct codec interfacing. Its 50 MHz MIPS32 M4K core can handle 16-bit/48 kHz stereo audio streaming over USB isochronous endpoints without external DSP. Place the device between the USB connector and a codec such as the TI TLV320AIC23B or Cirrus CS43L22; the integrated I2S eliminates the need for an external audio bridge IC, while PPS flexibility simplifies routing on space-constrained headset PCBs.
Recommended
Capacitive Touch HMI Panel
The PIC32MX230F128LT-I/PF suits capacitive touch HMI panels due to its integrated CTMU (Charge Time Measurement Unit) and PPS remappability. With up to 28 ADC channels and dedicated touch hardware, it can scan a 4x4 or larger capacitive matrix while the 50 MHz core runs display refresh and USB command processing. Pair with a PMP-driven LCD; use PPS to remap CTMU channels away from JTAG pins for clean touch sensor routing. Cost-effective versus CP1370 Microchip solutions while delivering full USB connectivity for tethered HMI panels.
Recommended
Industrial USB Sensor Hub
The PIC32MX230F128LT-I/PF works as an industrial USB sensor hub aggregating UART, SPI, and I2C sensor data over USB CDC or HID classes. Its four SPI, five UART, four I2C, and 10-bit 1 Msps ADC handle multiple sensor streams simultaneously. Industrial -40C to +85C temperature rating suits factory environments; the 100-TQFP package supports hand-soldering for low-volume industrial controllers. PPS allows PCB layout optimization when sensor connectors force pin reassignment versus upstream MCP tools.
Recommended
Low-Cost Graphics Terminal (PMP)
The PIC32MX230F128LT-I/PF drives low-cost graphics terminals via its Parallel Master Port (PMP) with dual read/write buffers, supporting direct connection to TFT LCD controllers without external bus drivers. The 50 MHz core can refresh QVGA (320x240) panels while servicing touch input. Compared to higher-end PIC32MZ parts, the PIC32MX230 keeps BOM cost low while still delivering USB connectivity for terminal debug or firmware update paths via micro-USB.
Recommended
USB MIDI Controller
The PIC32MX230F128LT-I/PF fits USB MIDI controllers because it integrates USB 2.0 FS device mode for USB-MIDI class-compliant operation without external USB ICs. The 128 KB Flash holds USB-MIDI class descriptor and button/encoder handling code for 16-32 control surface elements. PPS flexibility lets designers route encoder inputs to any I/O after PCB layout, ideal for compact MIDI foot controllers and DAW control surfaces.
Recommended
USB-to-UART / SPI Bridge
The PIC32MX230F128LT-I/PF functions as a USB-to-UART or USB-to-I2C bridge IC for legacy equipment modernization. The five UART and four I2C peripherals handle multiple serial channels simultaneously; USB CDC or vendor-class drivers appear as virtual COM ports on the host. Industrial temperature grade and 100-TQFP packaging make it suitable for retrofitting factory controllers, replacing bulkier FTDI-based bridges with a more integrated Microchip MIPS-based solution.
Recommended
IoT Sensor Node with USB Debug
The PIC32MX230F128LT-I/PF serves IoT sensor nodes that need USB for firmware updates, debug, or tethered data logging. The 128 KB Flash accommodates a real-time OS or state machine plus sensor drivers; USB 2.0 FS device mode provides a familiar micro-USB debug interface for field updates. The 50 MHz core and DMA allow low-latency sensor sampling while keeping USB enumeration responsive. Industrial temperature rating suits outdoor IoT deployments with USB service ports.
Recommended
Recommended Products Summary
Engineering reference data for PIC32MX230F128LT-I/PF — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC32MX230F128L-I/PF | PIC32MX230F128L-50I/PF | PIC32MX170F512LT-I/PF | PIC32MX170F512L-I/PF | PIC32MX150F256LT-I/PF | PIC32MX130F128L-I/PF |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TQFP (14x14) | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same |
| Flash Memory | 128 KB | 128 KB (same) | 128 KB (same) | 512 KB (+300%) | 512 KB (+300%) | 256 KB (+100%) | 128 KB (same) |
| SRAM | 16 KB | 16 KB (same) | 16 KB (same) | 64 KB (+300%) | 64 KB (+300%) | 32 KB (+100%) | 16 KB (same) |
| Maximum Clock Speed | 50 MHz (83 DMIPS) | 50 MHz (same) | 50 MHz (same) | 50 MHz (same) | 50 MHz (same) | 50 MHz (same) | 50 MHz (same) |
| USB 2.0 FS OTG | Yes | Yes | Yes | Yes | Yes | Yes | No |
| I2S Modules | 2 | 2 | 2 | 2 | 2 | 0 | 0 |
| PPS (Peripheral Pin Select) | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Supply 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 | 2.3 V to 3.6 V |
Key Differentiators
- Two integrated I2S modules for codec interfacing (vs PIC32MX150F256LT-I/PF)
- Best memory-to-cost ratio for USB audio mid-tier (vs PIC32MX170F512LT-I/PF)
- 100-TQFP pin compatibility with PIC32MX130/150/170 families (vs PIC32MX130F128L-I/PF)
Design Notes
The PIC32MX230F128LT-I/PF operates from a single 2.3V to 3.6V supply. Decouple VDD with a 10 uF bulk capacitor plus a 100 nF ceramic placed within 5 mm of each VDD pin pair. AVDD requires its own 10 uF + 100 nF pair with a ferrite bead between VDD and AVDD for ADC noise isolation - the 10-bit ADC at 1 Msps is sensitive to digital switching noise from the USB and DMA blocks. USB VBUS sensing requires a 5V-tolerant input on the VBUS pin; do not connect directly to a 3.3V regulator output.
PPS allows remapping of most digital peripherals after PCB layout, yet pin 1 location in the 100-TQFP cannot be moved. Place a 4-layer PCB with a continuous ground plane below the IC; route USB DP/DM as a 90-ohm differential impedance pair, kept under 50 mm. The 48 MHz external crystal traces must be short (<5 mm) and guarded by ground pour. JTAG TMS/TCK/TDO/TDI lines should be <100 mm and away from PWM or switching signals to avoid debug ICE errors.
Common pitfalls: (1) Do not exceed 3.6V on any I/O - 5V signals need a level translator; (2) The USB D+ pull-up resistor must be 1.5 kohm to 3.3V, not 5V, or enumeration fails; (3) Configuration bits must be set correctly - failure to enable the PLL with correct FPLLIDIV/FPLLMUL/FPLLODIV values will lock up at startup; (4) PPS input mapping (RPINR registers) is separate from PPS output mapping (RPOR registers) - assign each carefully; (5) Programming/debug via 2-wire ICD requires the PGD/PGC pins to be configured as such in configuration bits before debugging works.
At maximum 50 MHz with USB active, the device consumes approximately 70 mW. The 100-TQFP package has theta_JA around 40 C/W with a standard JEDEC 4-layer test board, yielding a 55 C junction temperature rise over ambient at full MIPS load. Industrial parts rated to +85 C ambient remain within spec. For enclosed housings without airflow, derate to 40-50 MHz or add copper pour to the exposed paddle area (note: the 100-TQFP has no exposed pad).
Compliance Information
RoHS and REACH compliant per Microchip product documentation. Industrial temperature grade (-40C to +85C) suitable for industrial and consumer applications. Not AEC-Q100 qualified - for automotive use select a PIC32MX variant with AEC-Q100 grade.
