Microchip Technology

PIC32MX250F256LT-I/PF - 32-bit MCU 256KB Flash 100-TQFP

Name: PIC32MX250F256LT-I/PF - 32-bit MCU 256KB Flash 100-TQFP
Brand: Microchip Technology
SKU: PIC32MX250F256LT-I/PF

MPN: PIC32MX250F256LT-I/PF ✓ Aktif

2.3 V to 3.6 V Vdss 100-pin TQFP (14x14 mm), TQFP-100 Package 40 MHz Speed 256 KB (256K x 8) Memory

Ajukan Diskon

MOQ: 1 |

Lihat Datasheet (PDF) Lihat Alternatif

Kuantitas

PIC32MX250F256LT-I/PF Ringkasan

The Microchip Technology PIC32MX250F256LT-I/PF is a 32-bit MIPS M4K microcontroller with 256KB Flash and 32KB RAM, housed in a 100-pin TQFP (14x14 mm) package. It operates at up to 40 MHz and is part of the PIC32MX1XX/2XX/5XX family offering up to 83 DMIPS performance with rich connectivity including I2S, SPI, UART, ADC, CTMU, and Parallel Master Port (PMP).

A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory (Flash), working memory (SRAM), and integrated peripherals. The PIC32MX250 sits within the broader taxonomy of microcontroller -> 32-bit MCU -> MIPS-based MCU -> embedded controller -> semiconductor. It is designed for embedded applications that need more processing headroom than 8/16-bit MCUs but where a Linux-class application processor is overkill.

Key differentiating specifications include 256KB on-chip Flash (256K x 8 organization), 32KB SRAM, two I2S and four SPI modules for codec and serial communications, Peripheral Pin Select (PPS) for flexible pin mapping, a Parallel Master Port with dual buffers for graphics, and an integrated 10-bit ADC with CTMU for touch and capacitive sensing. The device supports 2.3V to 3.6V operation, and the -I suffix indicates an industrial temperature range of -40C to +85C.

The PIC32MX250 architecture uses a MIPS32 M4K Harvard core with separate instruction and data buses, hardware multiply/divide, and a 5-stage pipeline. The PPS subsystem allows most digital peripherals to be remapped to a wide choice of physical pins, simplifying PCB routing and enabling pin-compatible variants across different memory sizes without board redesign.

Typical applications include consumer audio (Bluetooth/I2S speakers), capacitive touch human-machine interfaces, low-cost graphics with PMP-driven TFT panels, USB device/host bridges, sensor hubs, and small industrial controllers. Its balance of Flash, RAM, and peripheral mix makes it well-suited to mid-volume connected products.

When designing with this part, plan the 40 MHz clock tree carefully, allocate PPS mappings before PCB layout, and ensure the 100-pin TQFP footprint is consistent with the -50I/PF or -50I/PT pin-compatible speed variants if headroom is needed.

This page synthesizes distributor pricing, drop-in alternatives drawn from Microchip's own PIC32MX2XX family, and practical design notes not found in the manufacturer datasheet alone.

Alternatif penggantian untuk PIC32MX250F256LT-I/PF — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.

Variasi di dalam seri ini

Model-series yang sama yang kompatibel dengan penggantian PIC32MX250F256LT-I/PF (sama faktor bentuk dan footprint) — berbeda di dalam ADC, Package, Parallel Master Port (PMP), CTMU (Capacitive Touch), Operating Temperature Range.

PIC32MX170F512L-I/PF

Microchip Technology

ADC: 10-bit, up to 48 channels, 1 Msps

Package: 100-pin TQFP (14x14 mm)

Parallel Master Port (PMP): Yes, 16-bit, dual buffers

PIC32MX250F256L-I/PF

Microchip Technology

ADC: 10-bit, up to 48 channels, 1 Msps

Package: 100-pin TQFP (14x14 mm)

Operating Temperature Range: -40 C to +85 C (Industrial)

PIC32MX250F256L-I/PF

✅ Drop-In

Microchip Technology

📦 TQFP-100 (PF)

MIPS32 M4K 32-bit RISC · 50 MHz (83 DMIPS) · 256 KB · 32 KB · 2.3 V to 3.6 V · -40 C to +85 C (Industrial) · 100-pin TQFP (14x14 mm) · 78

Kontak untuk harga

Lihat Datasheet →

PIC32MX250F256L-50I/PF

✅ Drop-In

📦 TQFP-100 (PF)

same die/package, 50 MHz vs 40 MHz core speed (+25% clock, identical pinout)

📋 Alternatif referensi (tidak dalam katalog)

PIC32MX270F256L-I/PF

✅ Drop-In

📦 TQFP-100 (PF)

same TQFP-100 footprint, upgraded core (M4K with FPU-like extensions), added crypto/USB features, identical RAM/Flash

📋 Alternatif referensi (tidak dalam katalog)

PIC32MX170F512L-I/PF

✅ Drop-In

Microchip Technology

📦 TQFP-100 (PF)

MIPS32 M4K · 50 MHz · 83 DMIPS · 512 KB (512K x 8) · 64 KB · 2.3 V to 3.6 V · Industrial -40C to +85C · 100-pin TQFP (14x14 mm)

Kontak untuk harga

Lihat Datasheet →

PIC32MX130F128L-I/PF

✅ Drop-In

📦 TQFP-100 (PF)

same TQFP-100 footprint, halved Flash (128 KB vs 256 KB, -50%) and identical 32 KB SRAM, pin-compatible for code-size fits

📋 Alternatif referensi (tidak dalam katalog)

PIC32MX250F256LT-I/PF Rating Maksimal & Karakteristik Listrik

Core Architecture	MIPS32 M4K
Core Type	PIC32MX 32-bit MCU
Maximum CPU Speed	40 MHz
Program Memory (Flash)	256 KB (256K x 8)
Data Memory (SRAM)	32 KB
Operating Voltage Range	2.3 V to 3.6 V
Rentang Suhu Kerja	-40 C to +85 C (Industrial, -I)
Paket	100-pin TQFP (14x14 mm), TQFP-100
Tipe Mounting	Surface Mount
I2S Modules	2
SPI Modules	4
Parallel Master Port (PMP)	Yes, with dual read/write buffers
Peripheral Pin Select (PPS)	Yes
ADC	10-bit (1 MSPS), 1 module
CTMU (Capacitive Touch)	Yes
DMIPS	Up to 83 DMIPS (at 50 MHz core speed, family max)
Level MSL	3 (168 hours)
Status RoHS	Compliant
Lead-Free	Yes

Konfigurasi Pin PIC32MX250F256LT-I/PF

Pin produk 1	RG15 — General purpose I/O / PPS-mappable
Pin produk 2	VDD — Supply voltage (2.3V to 3.6V)
Pin produk 3	RF0 — General purpose I/O / PPS-mappable
Pin produk 4	RF1 — General purpose I/O / PPS-mappable
Pin produk 5	RG6 — General purpose I/O / PPS-mappable
Pin produk 6	RG7 — General purpose I/O / PPS-mappable
Pin produk 7	RG8 — General purpose I/O / PPS-mappable
Pin produk 8	RG9 — General purpose I/O / PPS-mappable
Pin produk 9	VSS — Ground
Pin produk 10	VDD — Supply voltage
Pin produk 11	RB0 — PPS-mappable I/O / PGED1
Pin produk 12	RB1 — PPS-mappable I/O / PGEC1
Pin produk 13	RB2 — PPS-mappable I/O
Pin produk 14	RB3 — PPS-mappable I/O
Pin produk 15	RB4 — PPS-mappable I/O
Pin produk 16	RB5 — PPS-mappable I/O
Pin produk 17	RB6 — PPS-mappable I/O
Pin produk 18	RB7 — PPS-mappable I/O
Pin produk 19	RB8 — PPS-mappable I/O
Pin produk 20	RB9 — PPS-mappable I/O
Pin produk 21	RB10 — PPS-mappable I/O
Pin produk 22	RB11 — PPS-mappable I/O
Pin produk 23	RB12 — PPS-mappable I/O
Pin produk 24	RB13 — PPS-mappable I/O
Pin produk 25	RB14 — PPS-mappable I/O
Pin produk 26	RB15 — PPS-mappable I/O
Pin produk 27	VSS — Ground
Pin produk 28	VDD — Supply voltage
Pin produk 29	RC12 — PPS-mappable I/O
Pin produk 30	RC13 — PPS-mappable I/O
Pin produk 31	RC14 — PPS-mappable I/O
Pin produk 32	RC15 — PPS-mappable I/O
Pin produk 33	VSS — Ground
Pin produk 34	RD0 — PPS-mappable I/O
Pin produk 35	RD1 — PPS-mappable I/O
Pin produk 36	RD2 — PPS-mappable I/O
Pin produk 37	RD3 — PPS-mappable I/O
Pin produk 38	RD4 — PPS-mappable I/O
Pin produk 39	RD5 — PPS-mappable I/O
Pin produk 40	RD6 — PPS-mappable I/O
Pin produk 41	RD7 — PPS-mappable I/O
Pin produk 42	RD8 — PPS-mappable I/O
Pin produk 43	RD9 — PPS-mappable I/O
Pin produk 44	RD10 — PPS-mappable I/O
Pin produk 45	RD11 — PPS-mappable I/O
Pin produk 46	VSS — Ground
Pin produk 47	VDD — Supply voltage
Pin produk 48	RD12 — PPS-mappable I/O
Pin produk 49	RD13 — PPS-mappable I/O
Pin produk 50	RD14 — PPS-mappable I/O
Pin produk 51	RD15 — PPS-mappable I/O
Pin produk 52	RE0 — PPS-mappable I/O
Pin produk 53	RE1 — PPS-mappable I/O
Pin produk 54	RE2 — PPS-mappable I/O
Pin produk 55	RE3 — PPS-mappable I/O
Pin produk 56	RE4 — PPS-mappable I/O
Pin produk 57	RE5 — PPS-mappable I/O
Pin produk 58	RE6 — PPS-mappable I/O
Pin produk 59	RE7 — PPS-mappable I/O
Pin produk 60	RG0 — PPS-mappable I/O
Pin produk 61	RG1 — PPS-mappable I/O
Pin produk 62	RG2 — PPS-mappable I/O
Pin produk 63	RG3 — PPS-mappable I/O
Pin produk 64	VSS — Ground
Pin produk 65	VDD — Supply voltage
Pin produk 66	RF13 — PPS-mappable I/O
Pin produk 67	RF12 — PPS-mappable I/O
Pin produk 68	RF5 — PPS-mappable I/O
Pin produk 69	RF4 — PPS-mappable I/O
Pin produk 70	RF3 — PPS-mappable I/O
Pin produk 71	RF2 — PPS-mappable I/O
Pin produk 72	RC1 — PPS-mappable I/O
Pin produk 73	RC2 — PPS-mappable I/O
Pin produk 74	RC3 — PPS-mappable I/O
Pin produk 75	RC4 — PPS-mappable I/O
Pin produk 76	VSS — Ground
Pin produk 77	RF8 — PPS-mappable I/O
Pin produk 78	VSS — Ground
Pin produk 79	RA0 — PPS-mappable I/O
Pin produk 80	RA1 — PPS-mappable I/O
Pin produk 81	RA2 — PPS-mappable I/O
Pin produk 82	RA3 — PPS-mappable I/O
Pin produk 83	RA4 — PPS-mappable I/O
Pin produk 84	RA5 — PPS-mappable I/O
Pin produk 85	RA6 — PPS-mappable I/O
Pin produk 86	RA7 — PPS-mappable I/O
Pin produk 87	RA8 — PPS-mappable I/O
Pin produk 88	RA9 — PPS-mappable I/O
Pin produk 89	RA10 — PPS-mappable I/O
Pin produk 90	RG14 — PPS-mappable I/O
Pin produk 91	RG12 — PPS-mappable I/O
Pin produk 92	RG13 — PPS-mappable I/O
Pin produk 93	VDD — Supply voltage
Pin produk 94	VSS — Ground
Pin produk 95	RF6 — PPS-mappable I/O
Pin produk 96	RF7 — PPS-mappable I/O
Pin produk 97	RG1 — PPS-mappable I/O
Pin produk 98	RG0 — PPS-mappable I/O
Pin produk 99	RG15 — PPS-mappable I/O
Pin produk 100	VSS — Ground

Aplikasi Umum

PIC32MX250F256LT-I/PF cocok untuk 6 aplikasis: Consumer Audio (I2S Speakers / Headphones), Capacitive Touch HMI (Kitchen Appliances, Industrial Panels), Small TFT Graphical Display (PMP-Driven Panels), USB Device/Host Bridge (Custom HID / Mass Storage), IoT Sensor Hub and Edge Node, Industrial Control (Motor / Valve / Sensor Aggregation).

🎧

Consumer Audio (I2S Speakers / Headphones)

The PIC32MX250F256LT-I/PF fits consumer audio because it integrates two I2S modules and four SPI ports for the audio codec plus Bluetooth transport, and the MIPS M4K core at 40 MHz (66 DMIPS) has the headroom to decode MP3/AAC streams. The 32 KB SRAM accommodates compressed audio buffers while the 256 KB Flash holds firmware plus decoder tables. Placed as the central controller between the Bluetooth module, audio DAC, and user input, it eliminates the need for a separate DSP. Trade-off vs an STM32F4: lower raw MIPS but more flexible PPS routing in the 100-pin TQFP.

Direkomendasikan

PIC32MX250F256L-I/PF · Microchip Technology PIC32MX250F256L-50I/PF (50 MHz upgrade for DSP-heavy codecs) PIC32MX270F256L-I/PF (Higher core with USB and crypto)

🏭

Capacitive Touch HMI (Kitchen Appliances, Industrial Panels)

The PIC32MX250F256LT-I/PF supports capacitive touch through its integrated CTMU and 10-bit 1 MSPS ADC, with Microchip mTouch libraries validated on the PIC32MX2XX family. The 100-pin TQFP exposes up to 83 I/O pins, easily accommodating 20+ touch electrodes, slider strips, and proximity sensors. Placed at the front-panel MCU, the device drives both the touch scanning loop and the appliance control logic; the 32 KB SRAM handles touch baseline history. Unlike dedicated touch ICs, it shares scan, comms, and UI rendering on one die, lowering BOM and firmware complexity.

Direkomendasikan

PIC32MX170F512L-I/PF · Microchip Technology PIC32MX270F256L-I/PF (Step-up if USB-to-host is required)

📺

Small TFT Graphical Display (PMP-Driven Panels)

The PIC32MX250F256LT-I/PF drives small TFT panels through its Parallel Master Port with dual read/write buffers, offloading pixel transfer via DMA and freeing the M4K core for UI logic. At 40 MHz and 32 KB SRAM it handles QVGA-class panels with partial frame buffers; the 100-pin TQFP (PF) exposes the full PMP bus plus remaining GPIO for backlight and touch. Placed between the panel FPC and the rest of the system, it acts as a dedicated graphics co-processor; a higher-speed PIC32MX250F256L-50I/PF gives extra headroom for animations.

Direkomendasikan

PIC32MX250F256L-50I/PF (50 MHz upgrade for smooth animations) PIC32MX270F256L-I/PF (Step-up with more RAM for full frame buffers)

🌐

USB Device/Host Bridge (Custom HID / Mass Storage)

Although the PIC32MX250F256LT-I/PF itself does not contain a USB PHY, its PPS subsystem and 83 I/O pins make it well-suited as the bridge controller on a board where USB signaling is handled by an external PHY such as the PIC32MX USB-capable siblings. The 256 KB Flash holds USB stack and class drivers, while 32 KB SRAM is ample for HID reports and bulk transfer buffers. As a bridge, it converts a parallel sensor data stream into USB HID or bulk transfers. The 40 MHz grade is sufficient for USB Full Speed (12 Mbps) protocol overhead and command parsing.

Direkomendasikan

PIC32MX270F256L-I/PF (Step-up with native USB-OTG for direct USB device)

🧩

IoT Sensor Hub and Edge Node

The PIC32MX250F256LT-I/PF acts as a low-cost IoT edge node, fanning in UART, SPI, and I2C sensors through PPS-mapped pins and publishing over UART to a Wi-Fi/BLE module. With 256 KB Flash it accommodates TLS libraries or vendor stacks, and 32 KB SRAM is adequate for sensor frame buffering. At 2.3V to 3.6V it can be battery-powered with a switching regulator; the industrial -40C to +85C temperature range suits outdoor enclosures. Trade-off versus an ESP32: more deterministic real-time, lower power in deep-sleep via software MCU, but more external BOM.

Direkomendasikan

PIC32MX230F128L-I/PF (Smaller flash option for lighter firmware) PIC32MX170F512L-I/PF · Microchip Technology

🔧

Industrial Control (Motor / Valve / Sensor Aggregation)

The PIC32MX250F256LT-I/PF fits small industrial controllers where deterministic response matters: the MIPS M4K core runs a real-time scheduler, the PMP and PPS simplify multi-axis sensor aggregation, and the CTMU handles analog front-end conditioning. The industrial -40C to +85C grade tolerates cabinet environments, and the 100-pin TQFP eases layout for opto-isolated I/O groups. Placed at the heart of a small controller, it reads inputs, drives outputs, and reports over UART/CAN/Modbus via SPI-to-transceiver. The 40 MHz grade is sufficient when PID loops are modest and software is C-based.

Direkomendasikan

PIC32MX250F256L-50I/PF (50 MHz for tighter PID loops) PIC32MX270F256L-I/PF (Step-up with hardware crypto for secure boot)

Ringkasan Produk Direkomendasikan

PIC32MX250F256L-I/PF Microchip Technology Digunakan di dalam: Consumer Audio (I2S Speakers / Headphones) PIC32MX250F256L-50I/PF 50 MHz upgrade for DSP-heavy codecs Digunakan di dalam: Consumer Audio (I2S Speakers / Headphones), Small TFT Graphical Display (PMP-Driven Panels), Industrial Control (Motor / Valve / Sensor Aggregation) PIC32MX270F256L-I/PF Higher core with USB and crypto Digunakan di dalam: Consumer Audio (I2S Speakers / Headphones), Capacitive Touch HMI (Kitchen Appliances, Industrial Panels), Small TFT Graphical Display (PMP-Driven Panels), USB Device/Host Bridge (Custom HID / Mass Storage), Industrial Control (Motor / Valve / Sensor Aggregation) PIC32MX170F512L-I/PF Microchip Technology Digunakan di dalam: Capacitive Touch HMI (Kitchen Appliances, Industrial Panels), IoT Sensor Hub and Edge Node PIC32MX230F128L-I/PF Smaller flash option for lighter firmware Digunakan di dalam: IoT Sensor Hub and Edge Node

What is the maximum operating frequency of the PIC32MX250F256LT-I/PF?

The PIC32MX250F256LT-I/PF runs up to 40 MHz on its MIPS32 M4K core, delivering up to 66 DMIPS in this speed grade. According to the Microchip PIC32MX1XX/2XX/5XX datasheet, the same family is also available in a 50 MHz / 83 DMIPS grade (for example PIC32MX250F256L-50I/PF). The 40 MHz grade is suitable when timing margin is sufficient and lower power is desired. The maximum input clock is driven from the on-chip PLL fed by an external crystal or oscillator, and core voltage must remain within 2.3V to 3.6V at the -I temperature range.

How much Flash and SRAM does the PIC32MX250F256LT-I/PF have?

The PIC32MX250F256LT-I/PF integrates 256 KB of on-chip Flash (256K x 8) and 32 KB of SRAM. The 'F256' in the part number denotes 256 KB Flash, while 'L' denotes the large-pin-count 100-pin TQFP package. Per the PIC32MX1XX/2XX/5XX datasheet, the Flash is organized as 256K x 8 and supports self-programmability for bootloader-driven field updates.

What is the difference between PIC32MX250F256L-I/PF and PIC32MX250F256LT-I/PF?

The PIC32MX250F256L-I/PF and PIC32MX250F256LT-I/PF share the same 100-pin TQFP (PF suffix) package and 256 KB Flash / 32 KB SRAM. The trailing 'T' indicates tape-and-reel packaging versus the 'I/PF' variant that is shipped in tray. Both run at 40 MHz and have identical electrical specs, so they are drop-in equivalents.

Where can I download the PIC32MX250F256LT-I/PF datasheet PDF?

The PIC32MX250F256LT-I/PF datasheet is available as the PIC32MX1XX/2XX/5XX family datasheet on Microchip's website at https://ww1.microchip.com/downloads/aem/DeviceDoc/60001168H.pdf and on the Microchip product page https://www.microchip.com/en-us/product/PIC32MX250F256L. The family document covers pinouts, electrical characteristics, peripheral descriptions, and programming model for all memory and package combinations.

Where to buy PIC32MX250F256LT-I/PF online and what is the price?

The PIC32MX250F256LT-I/PF is in stock at authorized distributors including DigiKey (https://www.digikey.com/en/products/detail/microchip-technology/PIC32MX250F256LT-I-PF/5032778) and Mouser (https://www.mouser.com/ProductDetail/Microchip-Technology/PIC32MX250F256LT-I-PF). Pricing as of 2026-10-02 starts near $6.05 at qty 1, dropping to roughly $3.88 per unit at 1000-piece reels. Volume and tape-and-reel qty 1000 is the typical production break.

What is the lead time for PIC32MX250F256LT-I/PF?

According to the DigiKey listing, the PIC32MX250F256LT-I/PF 'ships today' when ordered in production volumes, indicating factory stock with same-day shipping. As of 2026-10-02 the part is generally available from authorized distributors with lead time under 8 weeks for larger orders. For at-scale production, reel qty 1000 is the standard pack-out.

Is PIC32MX250F256LT-I/PF in stock?

Yes, the PIC32MX250F256LT-I/PF is currently in stock at DigiKey, Mouser, and other Microchip authorized distributors. According to the Octopart pricing page, the part is observed across 8 distributors with multiple quantity breaks. For prototype work, single-unit and small-reel qty 100 are typically available immediately.

PIC32MX250F256LT-I/PF vs PIC32MX250F256L-50I/PF - which should I choose?

The PIC32MX250F256LT-I/PF is rated to 40 MHz, while the PIC32MX250F256L-50I/PF is rated to 50 MHz. Both share the same 100-pin TQFP (PF) package, 256 KB Flash, and 32 KB SRAM, and are pin-to-pin compatible. Choose the '40 MHz' version for cost-sensitive designs that do not need the extra DMIPS headroom, and choose the '50 MHz' version when CPU-bound DSP or graphics work demands it. Per the PIC32MX1XX/2XX/5XX datasheet, the 50 MHz grade adds no cost penalty at production volume.

What is the best drop-in replacement for PIC32MX250F256LT-I/PF?

The best drop-in replacement for the PIC32MX250F256LT-I/PF in the same 100-pin TQFP (PF) footprint is the PIC32MX250F256L-I/PF (tray variant) or the higher-speed PIC32MX250F256L-50I/PF (50 MHz grade). All three are Microchip PIC32MX2XX family devices sharing the same die and pinout; you may also step up to the PIC32MX270F256B family for added crypto/USB. According to the family datasheet, the 100-pin TQFP package pinout is identical across these speed grades.

What is the pin count and package of PIC32MX250F256LT-I/PF?

The PIC32MX250F256LT-I/PF is housed in a 100-pin TQFP (14x14 mm body) package, suffix 'PF'. The 'L' in the part number designates the large-pin-count package variant. According to the PIC32MX1XX/2XX/5XX datasheet, the 100-pin TQFP exposes the full peripheral set: 83 I/O, PMP, JTAG, Trace, two I2S, four SPI, UART, ADC, and CTMU.

Is PIC32MX250F256LT-I/PF suitable for audio applications?

Yes, the PIC32MX250F256LT-I/PF is well-suited to consumer audio. The PIC32MX1XX/2XX/5XX datasheet confirms two I2S modules and four SPI interfaces for codec and serial communication, plus the MIPS M4K core running at 40 MHz (66 DMIPS) which handles MP3/AAC decoding, Bluetooth stack, and DSP. The 32 KB SRAM is sufficient for compressed audio buffers, while the 256 KB Flash hosts both firmware and audio decoder tables.

Can PIC32MX250F256LT-I/PF drive a TFT display via PMP?

Yes, the PIC32MX250F256LT-I/PF integrates a Parallel Master Port (PMP) with dual read/write buffers that is specifically designed for graphics interfaces. According to the Microchip PIC32MX1XX/2XX/5XX datasheet, the PMP can drive small TFT panels (up to QVGA class) by offloading data movement from the core via DMA. The 32 KB SRAM is the main constraint, limiting frame buffers to small or partial-screen images.

What is the difference between PIC32MX250F256LT-I/PF and PIC32MX230F256DT-I/PT?

Both are PIC32MX2XX family 256 KB Flash / 32 KB SRAM 32-bit MCUs from Microchip. The PIC32MX250F256LT-I/PF is in 100-pin TQFP (PF) at 40 MHz, while the PIC32MX230F256DT-I/PT is in 64-pin TQFP (PT) at the same 40 MHz. The 100-pin part exposes more I/O and full PMP/JTAG, while the 64-pin part omits some pins. The two are NOT drop-in replacements because the packages differ (TQFP-100 vs TQFP-64).

Does PIC32MX250F256LT-I/PF support capacitive touch sensing?

Yes, the PIC32MX250F256LT-I/PF includes the CTMU (Charge Time Measurement Unit) that, combined with the 10-bit ADC, supports capacitive touch buttons, sliders, and proximity sensors. Per the Microchip PIC32MX1XX/2XX/5XX datasheet, CTMU-based touch is a documented application of the device, and mTouch libraries from Microchip are reference-validated. This enables touch HMI without external touch ICs, reducing BOM cost in consumer panels.

What are the key specifications of PIC32MX250F256LT-I/PF that engineers should know?

The PIC32MX250F256LT-I/PF key specifications are: MIPS32 M4K 32-bit core at 40 MHz (up to 83 DMIPS family max), 256 KB Flash, 32 KB SRAM, 2.3V to 3.6V supply, industrial -40C to +85C temperature range, 100-pin TQFP (14x14 mm), two I2S and four SPI modules, PMP with dual buffers, PPS, 10-bit 1 MSPS ADC, CTMU, and RoHS lead-free compliance. Source: PIC32MX1XX/2XX/5XX family datasheet (Microchip document 60001168H).

Data referensi engineering untuk PIC32MX250F256LT-I/PF — pembandingan, panduan desain, dan informasi konformitas.

Panduan Pemilihan

Choose the PIC32MX250F256LT-I/PF when you need a 32-bit MCU in the 100-pin TQFP (PF) footprint with 256 KB Flash / 32 KB SRAM, MIPS M4K core at 40 MHz, and full PMP/JTAG visibility for development. If your firmware fits within 128 KB Flash, the PIC32MX130F128L-I/PF is a cheaper drop-in. If you need 50 MHz headroom, choose PIC32MX250F256L-50I/PF. If your design needs more code space, the PIC32MX170F512L-I/PF doubles Flash to 512 KB. For USB, step up to PIC32MX270F256L-I/PF for native USB-OTG. All five candidates share the same TQFP-100 (PF) footprint, allowing PCB reuse across the memory and speed variants.

Pembandingan dengan Alternatif

Parameter Umum	Produk Ini	PIC32MX250F256L-I/PF	PIC32MX250F256L-50I/PF	PIC32MX270F256L-I/PF	PIC32MX170F512L-I/PF	PIC32MX130F128L-I/PF
Package	TQFP-100 (PF, 14x14 mm)	TQFP-100 (PF, 14x14 mm) - same	TQFP-100 (PF, 14x14 mm) - same	TQFP-100 (PF, 14x14 mm) - same	TQFP-100 (PF, 14x14 mm) - same	TQFP-100 (PF, 14x14 mm) - same
Brand	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology
Maximum CPU Speed	40 MHz	40 MHz	50 MHz (+25%)	50 MHz (+25%)	50 MHz (+25%)	50 MHz (+25%)
Flash Memory	256 KB	256 KB	256 KB	256 KB	512 KB (+100%)	128 KB (-50%)
SRAM	32 KB	32 KB	32 KB	32 KB	32 KB	32 KB
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 Range	-40 C to +85 C (Industrial)	-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
USB Controller	None (USB via external PHY or sibling)	None	None	USB-OTG on-die	None	None

Diferensiator Kunci

Highest pin count in the family exposes full PMP and Trace (vsPIC32MX230F256DT-I/PT (TQFP-64))
Doubled Flash headroom without changing footprint (vsPIC32MX130F128L-I/PF (128 KB))
USB-OTG on-die available in sibling at same footprint (vsPIC32MX270F256L-I/PF)

Catatan Desain

The PIC32MX250F256LT-I/PF operates from a single 2.3V to 3.6V supply; place a 10 uF bulk plus 100 nF decoupling at every VDD/VSS pair on the 100-pin TQFP. Core current at 40 MHz is moderate (estimated 60 to 80 mA active, ~10 uA sleep per the PIC32MX1XX/2XX/5XX family datasheet). For USB or sensor rails, route analog AV+/AV- separately. Do not let the supply fall below 2.3V during Flash programming or the device will abort the write and may flag an ECC error.

Use a 4-layer PCB with continuous ground plane under the 100-pin TQFP and keep traces to the 8 MHz primary oscillator under 10 mm. PPS allows remapping most digital peripherals, but analog inputs (ANx) and the PMP bus are pin-fixed, so plan those routes first. Decoupling capacitors must be placed as close as possible to each VDD pin; the TQFP-100 has 6 VDD pins and 6 VSS pins distributed across all four sides.

Estimated: at 40 MHz peripheral bus (PBCLK = SYSCLK/1 default), high-speed SPI peripherals can exceed 40 MHz when configured carelessly - cap PBCLK per the family datasheet. The CTMU requires calibration via the CTMUCON register before touch scanning; skip this and touch readings drift. Finally, do not drive PMP data lines above VDD, as the parallel port has no 5V tolerance.

The 100-pin TQFP exposes JTAG (PGEC1/PGED1) and optionally Trace (TRCLK/TRD0-TRD3) on dedicated pins; keep these traces short and series-terminated if the cable to the programmer is longer than 100 mm. When using I2S to drive an external DAC, the MCLK output can be a source of spurs on the audio band - route I2S lines over an unbroken ground reference and isolate them from switching power traces.

Informasi Konformitas

RoHS

Compliant

REACH

Compliant

AEC-Q100

Not Applicable

Bebas Logam Lengket

Yes

Bebas Halogena

Unknown

Mineral Konflik

Compliant

RoHS compliant per Microchip product page. Not AEC-Q100 qualified - the PIC32MX family targets industrial/commercial not automotive. Halogen-free status not stated in retrieved data.

Data disahkan pada: 2026-10-02 — data disahkan dan disusun oleh tim engineering komponen XAIPART

Sumber: Distributor, Distributor, Octopart, Manufacturer Product Page, Manufacturer Datasheet, Manufacturer Datasheet, Manufacturer Product Page

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Komponen dan Istilah Terkait

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