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PIC24FJ256GL405-I/PT - 16-bit 256KB Flash LCD MCU, 48-TQFP
PIC24FJ256GL405-I/PT

PIC24FJ256GL405-I/PT - 16-bit 256KB Flash LCD MCU, 48-TQFP

The Microchip Technology PIC24FJ256GL405-I/PT is a 16-bit PIC microcontroller in the PIC24FJ 'GU4/GL4' family, featuring 256KB of ECC Flash, 32KB RAM, an integrated segmented LCD controller, and full-speed USB in a 48-pin TQFP (7x7 mm) package. It runs up to 32MHz (16 MIPS) from a 2.0V to 3.6V supply and supports on-the-fly Dual Partition Flash for real-time Over-The-Air (OTA) firmware updates and EEPROM emulation. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash), volatile working memory (RAM), and a rich set of peripherals such as timers, communication interfaces, ADCs, and increasingly domain-specific blocks like LCD segment drivers or USB transceivers. The PIC24FJ family sits in the 16-bit microcontrollers tier of the broader embedded computing taxonomy: 8-bit MCUs -> 16-bit MCUs -> 32-bit ARM Cortex MCUs -> application processors. PIC24F parts in particular target low-power, LCD-driven human-machine interface (HMI) products where battery life and segment display integration matter more than raw CPU throughput. Key features of the PIC24FJ256GL405-I/PT include 256KB of Flash with Error-Correcting Code (ECC), 32KB RAM, hardware LCD segment driver, full-speed USB 2.0 FS, multiple Core Independent Peripherals (CIPs), 12-bit ADC, up to 21 analog channels, and multiple capture/compare/PWM modules. Dual Partition Flash allows a backup image to be stored so a failed firmware update can roll back automatically, which is essential for unattended IoT endpoints. Architecturally, the PIC24FJ256GL405 uses a 16-bit modified Harvard core with separate program and data buses, allowing simultaneous instruction fetch and data access. The ECC-protected Flash stores both code and emulated EEPROM, while CIPs such as CLC, MCCP, and DMA let designers offload tasks from the CPU to lower active run-time and reduce average power consumption in sleep-dominated duty cycles. Typical applications include battery-powered smart thermostats, wearable health monitors, e-meter displays, industrial sensor hubs with LCD readouts, USB-CDC/HID peripherals, and consumer appliances with segmented LCDs. The integrated LCD, USB, and OTA firmware make it a strong fit for connected HMI products that must run for years on a coin cell or two AA cells. When designing with this MCU, pay attention to decoupling near the VDD/VSS pairs and route the USB DP/DNM lines as a 90 ohm differential pair. For OTA, leave at least one Dual Partition slot fully programmed as the golden image so a watchdog-assisted rollback can recover from corrupt updates.

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PIC24FJ256GL406-E/MR - 256KB Flash LCD MCU, 64-QFN | Microchip
PIC24FJ256GL406-E/MR

PIC24FJ256GL406-E/MR - 256KB Flash LCD MCU, 64-QFN | Microchip

The Microchip Technology PIC24FJ256GL406-E/MR is a 16-bit microcontroller from the PIC24F eXtreme Low-Power 'GL4' family, featuring 256KB of ECC Flash, 32KB RAM, an integrated segmented LCD controller, and full-speed USB, housed in a 64-pin QFN (9x9 mm) package with extended automotive temperature grade. A 16-bit microcontroller (MCU) is a single-chip processor with an internal data path width of 16 bits, optimized for embedded control applications that require more computational precision and code density than 8-bit parts while consuming less power than 32-bit devices. The PIC24FJ GL4 family belongs to the broader Microchip MCU taxonomy: PIC24F -> PIC24 -> 16-bit MCU -> microcontroller -> embedded processor -> semiconductor. These devices are commonly used in applications requiring low active and sleep currents, hardware USB, and a built-in segmented LCD driver. Key features of the PIC24FJ256GL406-E/MR include a 32 MHz maximum CPU clock (16 MIPS), 54 digital I/O pins, hardware USB 2.0 full-speed transceiver, 17-bit x 17-bit single-cycle hardware multiplier, and a 32-bit by 16-bit hardware divider. The device also integrates core-independent peripherals (CIPs) such as configurable logic cells, multiple PWM/SCCP/MCCP timers, 12-bit ADC with up to 30 channels, comparators, and a segmented LCD controller supporting up to 512 segments. The 'GL4' architecture is built on a modified Harvard design with a 24-bit instruction word and 16-bit data path. Dual-partition Flash memory (Live Update Flash) enables real-time Over-The-Air (OTA) firmware upgrades without device reset, supporting both bootloader and EEPROM emulation use cases. Power management features include multiple low-power sleep modes, a low-power RTCC, and operation from 2.0V to 3.6V, making the part well-suited to battery-powered and energy-harvesting applications. Typical applications include battery-powered human-machine interface (HMI) panels with LCD, automotive dashboards and instrument clusters, IoT sensor nodes with USB diagnostic interfaces, e-paper/epaper thermostats, and medical glucose/patient monitors. The combination of low power, integrated LCD, and USB makes it a strong fit for handheld industrial and consumer devices. When designing with this device, allocate sufficient PCB area for the 64-QFN (9x9 mm) exposed pad, which must be soldered to a ground copper pour for proper thermal dissipation. Verify that your debugger/programmer (e.g., PICkit 4 or MPLAB ICD 4) supports the GL4 family before committing to the platform. This page synthesizes distributor pricing, same-brand drop-in alternatives drawn from the PIC24FJ GL4 family, and practical design notes not consolidated in the manufacturer datasheet.

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PIC24FJ256GL406-E/PT - 16-Bit 32MHz 256KB Flash LCD MCU | Microchip
PIC24FJ256GL406-E/PT

PIC24FJ256GL406-E/PT - 16-Bit 32MHz 256KB Flash LCD MCU | Microchip

The Microchip Technology PIC24FJ256GL406-E/PT is a 16-bit, 32 MHz PIC microcontroller with 256 KB Flash, 32 KB RAM, integrated segmented LCD controller, and full-speed USB, housed in a 64-pin TQFP (10x10 mm) package. It belongs to the PIC24FJ "GU4/GL4" family, which supports up to 512 KB of dual-partition Flash for real-time Over-The-Air (OTA) updates and EEPROM emulation, and includes multiple Core Independent Peripherals (CIPs). A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory, working RAM, and peripherals. 16-bit PIC MCUs use a modified Harvard architecture with 16-bit instructions optimized for deterministic embedded control. The PIC24FJ family sits in the mid-range of Microchip's portfolio - more capable than 8-bit PIC10/12/16 parts and lower cost than 32-bit PIC32 families. It serves in the broader taxonomy: microcontroller -> embedded MCU -> semiconductor IC -> electronic component. Key features include 16 MIPS CPU performance from the 32 MHz oscillator, hardware Cryptographic Engine, 24-bit PWM, 12-bit ADC at 200 ksps, multiple UART/SPI/I2C, full-speed USB 2.0 device/host/OTG, segmented LCD driver (up to 296 segments), and 16-bit Parallel Master Port. The dual-partition Flash with live update support enables firmware upgrades without downtime, critical for connected IoT and industrial sensor nodes. The 'GL' variant of the family targets low-power, graphics-rich embedded designs such as metering, e-bike dashboards, white goods, healthcare monitors, and human-machine interface panels. Core Independent Peripherals - including CLC, MCCP, and SMT - allow complex event-driven tasks to run without CPU intervention, lowering average current draw and freeing MIPS for the application. Typical applications include LoRa/BLE IoT sensor nodes, industrial automation controllers, smart thermostats, e-metering, glucose meters, infusion pumps, and USB peripherals. The 64-pin TQFP package provides ample I/O for human-interface segments, capacitive touch, and display integration. When designing with this MCU, allocate sufficient Flash for OTA staging and plan a boot loader in a protected partition. Use Microchip's MPLAB X IDE and MCC code configurator; verify the segment count and bias for your LCD glass against the datasheet's segment mapping tables. This page synthesizes distributor pricing, drop-in same-package alternatives, application guidance, and design notes not consolidated on the manufacturer product page.

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PIC24FJ256GL406-I/MR - 16-Bit MCU, 32MHz, 256KB Flash, 64-QFN | Microchip
PIC24FJ256GL406-I/MR

PIC24FJ256GL406-I/MR - 16-Bit MCU, 32MHz, 256KB Flash, 64-QFN | Microchip

The Microchip PIC24FJ256GL406-I/MR is a 16-bit microcontroller from the PIC24F 'GL4' family, delivering 32MHz (16 MIPS) performance with 256KB ECC Flash and 32KB RAM in a 64-pin QFN (9x9 mm) package with exposed pad. The part is a member of Microchip's low-power, full-feature GU4/GL4 family which integrates a segmented LCD driver, full-speed USB, and core-independent peripherals (CIPs) for real-time control without CPU intervention. A 16-bit microcontroller (MCU) is a microprocessor optimized for embedded control, featuring a wider data path than 8-bit parts, integrated peripherals (timers, ADC, communications), and on-chip memory. Within the semiconductor hierarchy, MCUs sit inside the embedded processors category alongside DSPs, FPGAs, and microprocessors, and are the workhorse of consumer, industrial, and IoT products that need deterministic real-time response. Key features of the PIC24FJ256GL406 include 256KB ECC Flash with dual-partition support for over-the-air (OTA) firmware updates and EEPROM emulation, 32KB SRAM, hardware LCD segment driver, full-speed USB 2.0 device/host/OTG, and Microchip's eXtreme Low Power (XLP) technology targeting deep-sleep currents in the microamp range. It also offers 14-channel 12-bit ADC, multiple UART/SPI/I2C, and 5 CCP/ECCP modules for motor and PWM control. Architecturally, the device uses a 16-bit modified Harvard core with single-cycle multiplication and a hardware DIV instruction, allowing deterministic interrupt response. Dual-partition Flash lets one bank be live while the other is updated, enabling true OTA firmware swapping for remote sensor and metering deployments. Typical applications include low-power IoT sensor nodes, USB-connected industrial HMI panels with LCD readouts, smart metering, e-paper/E-ink controllers, and battery-powered medical wearables. The integrated LCD segment driver eliminates the need for an external LCD controller. When designing in this MCU, ensure the exposed pad (EP) on the 64-QFN is soldered to a sufficiently large ground copper pour to meet thermal and electrical specifications. Configure unused peripherals to their lowest-power state and use the deep-sleep modes with RTCC to achieve multi-year battery life on coin cells. This page consolidates distributor pricing, drop-in alternative part numbers, and engineering design notes beyond what is reproduced in the manufacturer datasheet.

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PIC24FJ256GL406-I/PT - 256KB Flash 16-bit MCU LCD USB | Microchip
PIC24FJ256GL406-I/PT

PIC24FJ256GL406-I/PT - 256KB Flash 16-bit MCU LCD USB | Microchip

The Microchip Technology PIC24FJ256GL406-I/PT is a 16-bit PIC microcontroller from the PIC24FJ GL4 family, featuring 256KB of dual-partition Flash with ECC, 32KB RAM, an integrated segmented LCD controller, and full-speed USB, all housed in a 64-pin TQFP (10x10 mm) package with industrial -40C to +85C temperature rating. The device operates from 2.0V to 3.6V, runs at 32 MHz (16 MIPS), and supports low-power Run/Idle/Sleep modes suited to battery-powered Human-Machine Interface (HMI) panels. What is a low-power 16-bit MCU with integrated LCD? A microcontroller is a single-chip computer that integrates CPU, memory, and peripherals; the PIC24FJ GL4 family adds segmented-LCD drivers, USB, and core-independent peripherals (CIPs) on a Harvard 16-bit core. The dual-partition Flash enables live firmware Over-The-Air (OTA) updates, while CIPs (RTCC, CRC, PWM, ADC, hardware crypto) offload work from the CPU to reduce active time and extend battery life. Key features include 256KB Flash with ECC and dual partition for OTA, 32KB SRAM, hardware real-time clock and calendar (RTCC), segmented LCD driver supporting up to 128 segments, full-speed USB 2.0 device, multiple UART/SPI/I2C interfaces, a 10/12-bit ADC, and Core Independent Peripherals that run without the CPU. The 64-pin TQFP provides ample GPIO while keeping the footprint compact for HMI designs. The PIC24FJ GL4 family uses an enhanced Harvard architecture with a 16-bit data path and 24-bit instructions, achieving 16 MIPS at 32 MHz. On-chip EEPROM emulation is implemented in Flash, allowing byte-level non-volatile storage without an external chip. The integrated LCD controller with charge pump simplifies the BOM for glass-segment displays, while the USB module enables plug-and-play connectivity for diagnostic, logging, or charging applications. Typical applications include low-power IoT sensor nodes, industrial HMI panels with segmented LCD, battery-powered medical devices, USB-connected consumer gadgets, smart thermostats, and metering equipment. The combination of low-power modes, hardware crypto, and OTA firmware update is especially valuable for connected devices that must remain in the field for years. Designers should budget PCB area for the integrated LCD bias network (charge pump capacitors) and the USB DP/DM 90-ohm differential pair. The dual-partition Flash requires bootloader discipline to perform safe live firmware swap; refer to Microchip application notes on OTA update for GL4 devices. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not aggregated on the manufacturer datasheet, with all values traceable to the data_sources URLs provided.

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PIC24FJ256GL406T-I/MR - 16-bit MCU, 256KB Flash, USB, LCD | Microchip
PIC24FJ256GL406T-I/MR

PIC24FJ256GL406T-I/MR - 16-bit MCU, 256KB Flash, USB, LCD | Microchip

The Microchip Technology PIC24FJ256GL406T-I/MR is a 16-bit microcontroller from the PIC24F family, delivering 16 MIPS performance at 32 MHz and 256 KB of dual-partition Flash with ECC support. Housed in a 64-pin QFN (9x9 mm) package, it features 32 KB SRAM, integrated segmented LCD driver, full-speed USB 2.0, and core independent peripherals (CIPs). The 'GL4' family targets secure OTA firmware updates via dual-partition Flash, allowing live in-field upgrades without external EEPROM. A 16-bit PIC microcontroller is a member of the higher-performance 16-bit MCU category, sitting between 8-bit AVR/PIC MCUs and 32-bit ARM Cortex-M devices. Within the system hierarchy, PIC24F parts belong to the Microcontroller > Embedded Processor > Integrated Circuit taxonomy. The 16-bit modified Harvard architecture balances deterministic interrupt response, rich peripherals, and low power - making PIC24F MCUs common in consumer appliances, industrial sensors, USB human-interface devices, and battery-powered metering where 8-bit cores are too slow but 32-bit MCUs are over-spec. Key features include hardware crypto engine, segmented LCD controller for up to 512 pixels, 12-bit ADC with 16 channels, multiple UART/SPI/I2C interfaces, and eXtreme Low Power (XLP) sleep modes drawing under 1 uA. The dual-partition Flash and EEPROM emulation reduce BOM cost by eliminating external memory chips. The 64-QFN package offers compact layout for space-constrained HMI modules. Typical applications include secure IoT nodes with OTA firmware, USB HID peripherals, metering displays with LCD, automotive AEC-Q100 dashboard sub-modules, and low-power sensor hubs. The wide peripheral integration reduces external components, supporting compact PCB designs with fewer layers. Design tip: the dual-partition Flash requires careful linker script configuration to partition A/B blocks correctly. Refer to Microchip application note TB3134 for OTA reference implementation patterns. AECs and standard PIC24F IDE toolchains (MPLAB X, XC16 compiler) support this device fully.

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PIC24FJ256GL406T-I/PT - 256KB Flash 32KB RAM 16-bit MCU | Microchip
PIC24FJ256GL406T-I/PT

PIC24FJ256GL406T-I/PT - 256KB Flash 32KB RAM 16-bit MCU | Microchip

The Microchip Technology PIC24FJ256GL406T-I/PT is a 16-bit PIC24F microcontroller with 256KB ECC Flash, 32KB RAM, integrated LCD driver, and full-speed USB, housed in a 64-pin TQFP (10x10 mm) package. It runs at 32MHz (16 MIPS), supports 2.0V to 3.6V operation, and includes 54 digital I/O pins plus a 10-bit ADC, making it a drop-in high-memory option for the PIC24FJ GL4 family. The dual-partition Flash architecture enables real-time Over-The-Air (OTA) firmware updates and EEPROM emulation without external memory. A PIC24F microcontroller is a 16-bit modified Harvard architecture MCU from Microchip's PIC family, sitting between 8-bit PIC16/PIC18 devices and 32-bit PIC32 parts. PIC24F devices emphasize ultra-low-power sleep modes (nanoWatt XLP technology), rich Core Independent Peripherals (CIPs) that offload tasks from the CPU, and integrated analog such as 10/12-bit ADCs and comparators. Within the PIC taxonomy, PIC24F belongs to power management ICs > microcontrollers > 16-bit MCUs > PIC24F > GL4 sub-family. This places it squarely in the industrial, medical, and consumer-embedded tier where USB, LCD, and low-power CIP-driven design dominate. Key features include hardware Real-Time Clock and Calendar (RTCC) with timestamped deep-sleep wake, 24-channel 10-bit ADC with 500 ksps throughput, USB 2.0 Full-Speed with on-chip transceiver and dedicated DMA, segmented LCD driver for up to 472 pixels, six UART, three I2C, and three SPI peripherals, plus four Configurable Logic Cells (CLC) and two 32-bit timers. ECC on Flash and RAM improves reliability in harsh environments and supports IEC 60730 Class B safety software. Code protection, secure OTP, and unique device ID enable anti-counterfeit and IP protection. The PIC24FJ256GL406 architecture pairs a 16-bit modified Harvard core with a 24-bit instruction word, giving predictable deterministic interrupt latency (5-cycle response) crucial for motor control and digital power loops. The dual-partition Flash is divided into two live banks, allowing firmware updates to run from the alternate partition while the active bank is reprogrammed - delivering true live OTA. Internal LDO and DC-DC switching converter support optimize active current versus sleep current, achieving sub-1uA sleep with RTCC retention. Typical applications include industrial HMI panels with LCD and USB, smart home hubs, medical glucose and infusion meters, e-metering and HVAC controllers, automotive body and accessory modules (AEC-Q100 qualified), ruggedized portable instruments, and low-power IoT sensor nodes with local LCD readout. The wide 2.0V-3.6V range and XLP nanoWatt technology suit battery-powered deployments that must run for years on a single cell. When designing with this part, allocate 100nF and 10uF decoupling near each VDD/VSS pair, place the 12MHz primary oscillator crystal within 5mm of OSC1/OSC2 with a guarded ground pour, and ensure the USB DP/DM trace impedance is 90 ohms differential per USB 2.0 specification. Use the CLC and PWM peripherals for hardware-driven response to keep the CPU in sleep for as long as possible. This page synthesizes distributor pricing, drop-in same-package alternatives from Microchip's PIC24F GL4/GB4 families, and practical PCB/USB design notes not consolidated in the manufacturer datasheet.

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PIC24FJ256GL408-E/PT - 16-bit 32MHz 256KB Flash LCD MCU | Microchip
PIC24FJ256GL408-E/PT

PIC24FJ256GL408-E/PT - 16-bit 32MHz 256KB Flash LCD MCU | Microchip

The Microchip Technology PIC24FJ256GL408-E/PT is a 16-bit PIC microcontroller built on the Harvard architecture, operating at 32 MHz with 16 MIPS throughput, integrating 256 KB of ECC Flash and 32 KB of SRAM in an 80-pin TQFP (12x12 mm) package. It belongs to the PIC24FJ 'GU4/GL4' eXtreme Low-Power family and supports a wide 2.0V-3.6V operating range with 2.5V/3.3V nominal rails. The -E suffix denotes the extended operating temperature grade of -40C to +125C. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash/ROM), data memory (RAM), and a rich set of peripheral interfaces. The PIC24F family uses a 16-bit modified Harvard core optimized for low-power embedded control, sitting architecturally between 8-bit PIC16/PIC18 devices and 32-bit PIC32 parts. The 'GL4' sub-family adds Core Independent Peripherals (CIPs) such as Configurable Logic Cells, CLC, PWM, RTCC, and an integrated segmented LCD driver. Hypernym: MCU -> microcontroller -> embedded controller -> semiconductor IC. Key features include an integrated full-speed USB 2.0 device/host/OTG controller, segmented LCD driver (up to 512 segments), 12-bit ADC with 200 ksps, up to 9 capture/compare/PWM modules, two I2C, three UART, and three SPI/I2S interfaces. The 256 KB Flash supports Dual Partition OTA firmware updates and EEPROM emulation, eliminating the need for an external EEPROM. Up to 69 general-purpose I/O pins are brought out through Peripheral Pin Select (PPS), giving flexible signal routing without package re-spins. The 'GU4/GL4' architecture combines an LCD controller, USB, and CIPs in a single die for ultra-low-power applications. Power-saving modes include Idle, Sleep (with RTCC retention drawing only hundreds of nA), Deep Sleep, and VBAT mode for RTC backup from a coin cell. The integrated 32 kHz RTCC and ultra-low-power wake-up sources enable years of operation from a single CR2032 battery in metering or sensor products. Typical applications include industrial LCD keypads and HMI panels, USB-connected sensor hubs, e-metering and energy-monitoring displays, medical infusion pumps, consumer appliances with user interfaces, and battery-powered IoT edge nodes with segmented LCD readouts. The integrated LCD and USB significantly reduce BOM cost versus discrete implementations. When designing with the PIC24FJ256GL408-E/PT, ensure VDD decoupling is placed within 3 mm of every VDD/VSS pair, route the USB DP/DM traces as a 90 ohm differential pair with length matching within 150 mil, and follow Microchip's MSSP layout guidelines for noise-sensitive analog inputs. Use MPLAB X IDE with the XC16 compiler for code development and the PICkit 5 or ICD 4 for programming/debugging.

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PIC24FJ256GL408-I/PT - 16-Bit MCU, 256KB Flash, LCD, USB | Microchip
PIC24FJ256GL408-I/PT

PIC24FJ256GL408-I/PT - 16-Bit MCU, 256KB Flash, LCD, USB | Microchip

The Microchip PIC24FJ256GL408-I/PT is a 16-bit eXtreme Low-Power microcontroller from the PIC24FJ 'GU4/GL4' family, offering 256KB of ECC Flash, 32KB RAM, an integrated segment LCD controller, and full-speed USB in an 80-pin TQFP (PT) package. It operates at up to 32MHz (16 MIPS) across a 2.0V–3.6V supply range, with dual-partition Flash supporting real-time Over-The-Air (OTA) updates and EEPROM emulation. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash/RAM), and programmable peripherals. The 'F' suffix indicates a Flash-based PIC24F device, while 'J' denotes the enhanced 16-bit core. Within the broader taxonomy, this part sits as: PIC24FJ → 16-bit MCU → microcontroller → embedded processor → semiconductor. This positioning makes it well-suited for human-machine interface (HMI) applications where integrated LCD drive and USB connectivity reduce system BOM. Key features include core-independent peripherals (CIPs) such as Configurable Logic Cells (CLC), Multiple Output Capture/Compare/PWM, and a 12-bit ADC with up to 24 channels. The integrated segmented LCD driver supports up to 480 segments with contrast control, and hardware crypto accelerators (AES/SHA) are available on select family members. The 32MHz operation at 3.3V delivers 16 MIPS, while eXtreme Low-Power technology enables deep sleep currents in the microampere range for battery-operated designs. Typical applications include industrial control panels, medical monitoring devices with LCD readouts, e-metering/HVAC thermostats, USB-connected sensor hubs, and OTA-updatable IoT edge nodes. The dual-partition Flash architecture is especially valuable for in-field firmware upgrades where maintaining a known-good image is critical. When designing with this MCU, allocate pin mapping early since the 80-pin TQFP offers a generous but bounded I/O count. Use the integrated LCD charge pump to bias the display, and leverage the DMA engine to offload data movement from the core for sustained USB throughput.

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PIC24FJ256GL408T-I/PT - 16-bit MCU, 256KB Flash, LCD, USB | Microchip
PIC24FJ256GL408T-I/PT

PIC24FJ256GL408T-I/PT - 16-bit MCU, 256KB Flash, LCD, USB | Microchip

The Microchip Technology PIC24FJ256GL408T-I/PT is a 16-bit PIC microcontroller featuring 256KB ECC Flash, 32KB RAM, integrated LCD driver, and full-speed USB, housed in an 80-pin TQFP (12x12 mm) package. It belongs to the PIC24FJ GL4 family, which offers up to 512KB of Dual Partition Flash supporting real-time Over-The-Air (OTA) updates and EEPROM emulation. The device operates at up to 32 MHz (16 MIPS) from a 2.0V to 3.6V supply, suiting it for low-power and battery-backed embedded systems. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (RAM), and a rich set of peripherals such as timers, communication controllers, and analog blocks. The PIC24FJ GL4 family sits in the broader taxonomy of 16-bit microcontrollers -> PIC microcontrollers -> Microchip 16-bit MCUs -> embedded microcontrollers -> semiconductor ICs. The 'FJ' suffix denotes the Flash-based enhanced PIC24F architecture with nanoWatt XLP low-power technology, while the 'GL4' family extends the lineup with a hardware LCD segment driver and full-speed USB 2.0. Key features include 256KB Flash with Error-Correcting Code (ECC), 32KB SRAM, hardware LCD controller supporting up to 480 segments, full-speed USB 2.0 device/host/OTG, 4 dedicated DMA channels, and a Peripheral Pin Select (PPS) remappable I/O system. Core-independent peripherals (CIPs) such as the Configurable Logic Cell (CLC), Multiple Capture/Compare/PWM (MCCP/SCCP), and 12-bit ADC with up to 24 channels reduce CPU overhead and enable event-driven designs. The device also integrates a Real-Time Clock/Calendar (RTCC) with backup domain, cryptographic support, and a true random number generator for secure applications. The 'T' suffix indicates Tape and Reel packaging, and 'I' indicates the industrial -40C to +85C operating temperature range. The 'PT' suffix is the Microchip package designator for the 80-pin TQFP. Drop-in compatible variants exist within the same family in TQFP-80 footprints including PIC24FJ256GL408-I/PT (tray, same die) and the wider 256KB GL4 family. The device targets human-machine interface (HMI) and connected embedded applications where a built-in LCD driver and USB simplify the BOM. Typical applications include low-power IoT sensor nodes with USB connectivity, medical glucose meters and patient monitors with segment LCDs, industrial control panels with HMI displays, secure payment terminals with hardware crypto, and automotive dashboard sub-modules (consult PIC24FJ256GL408-E/PT for extended temperature variants). When designing with this MCU, pay attention to the RTCC backup domain and Vbat pin requirements for battery-backed RTC operation, and ensure proper decoupling on Vdd/Vss pairs as outlined in the device datasheet. The PIC24FJ256GL408T-I/PT is supplied on a 1600-unit tape-and-reel reel with a 12 mm body, and is supported by Microchip's MPLAB X IDE, MPLAB Code Configurator (MCC), and the XC16 C compiler toolchain. Pricing and stock should be confirmed at the time of order, as the part is in active production but subject to allocation. This page synthesizes distributor pricing, drop-in alternatives from the PIC24FJ GL4 family, and practical design notes not found in the manufacturer datasheet.

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PIC24FJ256GL410-E/PT - 16-Bit 256KB Flash MCU w/ USB & LCD | Microchip
PIC24FJ256GL410-E/PT

PIC24FJ256GL410-E/PT - 16-Bit 256KB Flash MCU w/ USB & LCD | Microchip

The Microchip Technology PIC24FJ256GL410-E/PT is a 16-bit eXtreme Low-Power microcontroller from the PIC24F 'GL4' family, integrating 256KB of dual-partition Flash, 32KB RAM, a full-speed USB 2.0 device controller, a segmented LCD controller with up to 512 segments, and a rich set of Core Independent Peripherals (CIPs). Housed in a 100-pin TQFP (12x12 mm) package, it operates at up to 32 MHz (16 MIPS) with a wide 2.0V-3.6V supply range. A microcontroller (MCU) is a single-chip computer that contains a processor core, program memory (Flash), data memory (RAM), and a wide array of integrated peripherals such as timers, communication interfaces, ADCs, and CIPs. MCUs belong to the broader category of embedded processors (sitting alongside microprocessors and DSPs) and form the lowest tier of the embedded-computing hierarchy, executing firmware directly from on-chip Flash to control real-world systems. The PIC24F family in particular targets low-power, deterministic applications, ranking as a 16-bit MCU -> 16-bit embedded controller -> microcontroller -> embedded processor -> semiconductor. Key features of the PIC24FJ256GL410-E/PT include up to 512KB dual-partition Flash supporting live Over-The-Air (OTA) firmware updates with EEPROM emulation, a 10-bit ADC and a 10/12-bit ADC variant, hardware crypto acceleration, deep sleep current in the nanoamp range, and multiple CIPs such as Configurable Logic Cells and 16-bit PWM. The 100-pin TQFP package provides ample GPIO for driving segmented LCD glass directly while still exposing USB, I2C, SPI, UART, and PPS (Peripheral Pin Select). Architecturally, the device uses a 16-bit modified Harvard core with a 24-bit instruction word and 16-bit data path, paired with a highly flexible clock tree that supports run, idle, and sleep modes for energy-aware design. The dual-partition Flash is the central differentiator, allowing one partition to run code while the other receives an OTA update. Typical applications include IoT edge nodes with secure OTA, smart metering, medical wearables, industrial HMI panels with segmented LCD, USB human-interface devices, and low-power sensor hubs. When designing with this MCU, allocate a portion of Flash for OTA staging, plan segmented-LCD bias networks carefully, and use PPS to remap peripherals without board rework.

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PIC24FJ256GL410-I/PT - 16-Bit 32MHz 256KB Flash MCU | Microchip
PIC24FJ256GL410-I/PT

PIC24FJ256GL410-I/PT - 16-Bit 32MHz 256KB Flash MCU | Microchip

The Microchip Technology PIC24FJ256GL410-I/PT is a 16-bit eXtreme Low-Power microcontroller featuring 256KB of ECC Flash and 32KB of RAM, operating at 32MHz with 16 MIPS performance, housed in a 100-pin TQFP (12x12 mm) package. It integrates a segmented LCD controller, full-speed USB, and a rich set of Core Independent Peripherals (CIPs) including a 12-bit ADC and multiple communication interfaces for embedded designs requiring mixed-signal capability. A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory (typically Flash), working memory (RAM), and a range of integrated peripherals such as timers, ADC/DAC converters, communication controllers, and GPIO. The PIC24FJ family belongs to the broader 16-bit MCU class, sitting architecturally between 8-bit MCUs (PIC16, ATmega) and 32-bit Cortex-M devices. Within Microchip's product hierarchy, the PIC24FJ256GL410 falls under the eXtreme Low-Power category, which is a subfamily of the 16-bit PIC24F line, optimized for battery-powered and energy-harvesting applications that still require substantial Flash and feature integration. Key features of this device include up to 256KB Dual Partition Flash with EEPROM emulation, real-time Over-The-Air (OTA) firmware update capability, integrated segmented LCD driver supporting up to 8 common lines and many segment lines, a 12-bit A/D converter with multiple input channels, and multiple UART/SPI/I2C interfaces. The 32MHz maximum operating frequency delivers 16 MIPS throughput for compute-intensive embedded tasks. Core Independent Peripherals (CIPs) such as Configurable Logic Cells, Multiple Output Capture/Compare/PWM, and hardware CRC allow autonomous operation without CPU intervention. The architecture employs a modified Harvard structure with separate program and data buses, a 16-bit data path, and a 24-bit instruction word that includes an integrated hardware multiplier/Divide engine for DSP-like operations. This combines the simplicity of an 8-bit MCU development flow with the performance headroom of a 16-bit core, supporting C-coded algorithms from sensor fusion to USB-class stacks. Typical applications include battery-powered IoT sensor nodes, wearable medical devices with LCD displays, industrial metering and data loggers with segmented LCD readouts, USB-connected embedded peripherals, home appliances with user interfaces, and Over-The-Air-updatable consumer electronics. The low-power RUN/IDLE/SLEEP modes combined with the integrated LCD controller make it especially suitable for handheld devices that display information on glass or chip-on-glass LCD panels. When designing with the PIC24FJ256GL410-I/PT, ensure the board layout accommodates the 100-pin TQFP package which requires adequate copper pours for thermal management and stable oscillator performance. Use MPLAB X IDE with the MPLAB Code Configurator (MCC) for peripheral initialization, and consider the Dual Partition Flash feature to enable fail-safe OTA updates. This page synthesizes distributor pricing, drop-in alternatives from the same PIC24FJ family, and practical design notes not found in the manufacturer datasheet alone.

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PIC24FJ256GL410T-I/PT - 256KB Flash LCD MCU 100-TQFP | Microchip
PIC24FJ256GL410T-I/PT

PIC24FJ256GL410T-I/PT - 256KB Flash LCD MCU 100-TQFP | Microchip

The Microchip PIC24FJ256GL410T-I/PT is a 16-bit eXtreme Low-Power microcontroller from the PIC24FJ GL4 family with 256KB of Flash, 32KB RAM, an integrated LCD controller, full-speed USB, and a 16 MIPS CPU core, packaged in a 100-pin TQFP (12x12 mm). The "GL4" family introduces a Dual-Partition Flash architecture that supports real-time Over-The-Air (OTA) firmware updates and EEPROM emulation, making it well suited to field-upgradable IoT nodes and connected sensors. What is a 16-bit microcontroller? A 16-bit MCU is a programmable processor with a 16-bit data path, register file, and ALU, sitting between 8-bit MCUs (lower cost, lower performance) and 32-bit MCUs (higher performance, higher power). The PIC24FJ family targets low-power, mixed-signal embedded applications that need more headroom than 8-bit parts but do not require an ARM Cortex-M core. Within Microchip's taxonomy, the PIC24FJ GL4 family occupies the "ultra-low-power, LCD + USB" niche, bridging the gap between the PIC24FJ GB4 family (more I/O, less USB focus) and the PIC24FJ GA7 family (lower power, no USB). Key features include 256KB (256K x 8) of Flash with error correction, 32KB SRAM, up to 86 general-purpose I/O, an integrated segmented LCD driver, a full-speed USB 2.0 device/host/OTG controller, a 12-bit ADC, multiple Core Independent Peripherals (CIPs) including CLC, PWM, and RTCC, and a 2.0V to 3.6V supply range. The CPU runs up to 32MHz at 16 MIPS, with a hardware multiplier and divider. Deep-sleep currents are in the microamp range, supporting battery-powered designs. The Dual-Partition Flash architecture is the standout technical feature: two independent Flash arrays allow one partition to execute code while the other is being reprogrammed, eliminating update downtime. Combined with the integrated LCD and USB controllers, this architecture simplifies the BOM for connected HMI, meter, and sensor applications that require firmware updateability in the field. Typical applications include battery-powered IoT sensors with LCD displays, smart utility meters, home automation gateways, industrial HMI panels, medical monitoring devices, automotive accessory clusters, and USB-connected data loggers. The integrated USB and LCD reduce the external component count significantly. When designing with this device, place a 0.1 uF decoupling capacitor close to every VDD pin and follow the recommended PCB layout for the USB DP/DM traces (90-ohm differential, length-matched). For OTA updates, leave a dedicated bank of Flash untouched for a fail-safe bootloader and verify the dual-partition handshake sequence from the manufacturer application note. This page synthesizes distributor pricing, drop-in alternative MCU part numbers, and practical design notes not found in the manufacturer datasheet alone, helping procurement and firmware teams evaluate second-source options and field-update strategies.

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PIC24FJ256GU405-E/M4 - 16-Bit 32MHz 256KB Flash USB MCU | Microchip
PIC24FJ256GU405-E/M4

PIC24FJ256GU405-E/M4 - 16-Bit 32MHz 256KB Flash USB MCU | Microchip

The Microchip Technology PIC24FJ256GU405-E/M4 is a 16-bit PIC® microcontroller from the eXtreme Low Power PIC24FJ GU4/GL4 family, featuring 256KB of dual-partition Flash, 32KB RAM, a 32MHz (16 MIPS) CPU core, integrated full-speed USB, an LCD controller, and Core Independent Peripherals (CIPs), all in a 48-pin UQFN (6x6 mm) package. The dual-partition Flash architecture enables real-time Over-The-Air (OTA) firmware updates and EEPROM emulation without external storage, which is critical for connected devices that must remain in service during firmware upgrades. Integrated CIPs offload tasks such as PWM, ADC triggering, and signal conditioning from the CPU, allowing extended sleep states and sub-uA/MIPS efficiency. A PIC microcontroller is a compact, self-contained computing subsystem built around a Harvard-architecture CPU, on-chip non-volatile program memory, RAM, and a rich set of peripherals (timers, ADC, communication controllers, I/O). Within the broader semiconductor taxonomy, the PIC24FJ family sits in the 16-bit MCU tier — above 8-bit PIC10/12/16 and below 32-bit ARM Cortex-M parts — and the "FJ" suffix denotes an eXtreme Low Power (XLP) variant optimized for battery and energy-harvesting applications. The "GU" family specifically adds USB and dual-partition Flash to the XLP foundation. Key differentiating features include the dual-partition Flash supporting live OTA updates, hardware CIP blocks for autonomous peripheral operation, a 10-bit 1.1 Msps ADC, multiple UART/SPI/I2C interfaces, and a segmented LCD driver capable of driving up to 288 pixels directly. The integrated USB 2.0 full-speed transceiver with on-chip PHY eliminates the need for an external USB interface chip, reducing BOM cost and PCB area in connected peripherals such as glucose meters, smart thermostats, and asset trackers. At 32MHz the CPU delivers 16 MIPS while the XLP sleep currents allow years of operation from a coin cell. The 48-pin UQFN (6x6 mm) package provides a compact footprint suitable for space-constrained designs, and the industrial-grade -40C to +125C operating range allows deployment in harsh environments. This combination of low power, integrated USB, and live-update Flash makes the GU405 family particularly attractive for medical, industrial IoT, and consumer devices that must support secure firmware updates in the field. Typical applications include USB-based medical sensors, battery-powered industrial IoT nodes with OTA firmware capability, electronic shelf labels and metering front panels that use the LCD controller, consumer wearables with USB charging and data sync, and home automation controllers. For designs that need the same feature set in a larger package or with more I/O, the PIC24FJ256GL405 in 48-pin TQFP/PT or the PIC24FJ256GU410 in 64-pin packages offer drop-in scalability within the same family. A key design consideration is dual-partition Flash mapping: when the OTA feature is enabled, the application must reserve one partition as the update buffer, reducing the contiguous program space available to roughly half. If live updates are not required, the device can be configured as a single contiguous 256KB Flash block with no OTA overhead. The NRST, MCLR, and Vcap pins also require careful PCB layout — the Vcap core regulator decoupling capacitor must be placed within 2mm of the pin for stable operation. This page synthesizes distributor pricing from DigiKey and Mouser, Microchip datasheet specifications, and curated drop-in alternatives from the PIC24FJ GU4/GL4 family that share the 48-pin UQFN footprint — practical engineering context that goes beyond the manufacturer datasheet itself.

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PIC24FJ256GU405-E/PT - 16-bit 32MHz 256KB Flash USB MCU | Microchip
PIC24FJ256GU405-E/PT

PIC24FJ256GU405-E/PT - 16-bit 32MHz 256KB Flash USB MCU | Microchip

The Microchip Technology PIC24FJ256GU405-E/PT is a 16-bit microcontroller from the PIC24F family featuring a 32MHz CPU (16 MIPS), 256KB of ECC Flash, 32KB RAM, integrated full-speed USB 2.0, and an LCD segment driver, packaged in a 48-pin TQFP (7x7 mm). It operates from 2.0V to 3.6V and is AEC-Q100 qualified for automotive use, with 39 general-purpose I/O pins and a rich set of Core Independent Peripherals (CIPs) that allow many subsystems to run without CPU intervention. A 16-bit PIC24F microcontroller is a member of Microchip's eXtreme Low-Power (XLP) family built around the 16-bit modified Harvard architecture. PIC24F MCUs occupy the middle of the PIC family hierarchy: 8-bit PIC MCUs sit below them, and 32-bit PIC32 parts sit above. They are commonly chosen when engineers need more computational headroom than 8-bit parts but lower power and simpler toolchains than Cortex-M devices. The -E temperature suffix indicates an industrial/automotive operating range of -40°C to +125°C, while the /PT suffix denotes the 48-pin TQFP package. The on-chip CIPs include multiple 16-bit timers, configurable logic cells (CLC), a 12-bit 1.1 Msps ADC, multiple UART/SPI/I²C peripherals, a Parallel Master Port, and a segmented LCD controller capable of driving up to 248 segments. The Dual Partition Flash architecture supports live Over-The-Air (OTA) firmware updates with EEPROM emulation, allowing firmware to be replaced at run-time without bricking the device. Typical applications include automotive instrument clusters and HVAC control heads (where the LCD driver and USB are both exploited), IoT edge nodes requiring USB-C DCU bootloading, portable medical devices needing segmented LCD glass, and industrial sensor hubs. With its 5-channel DMA and 32KB RAM, the part can sustain a USB CDC stack plus a foreground sensor sampling loop. When designing with this MCU, the two key trade-offs are RAM-limited DSP workloads (32KB is modest for audio processing) and the 32MHz core ceiling versus 32-bit Cortex-M0+ competitors at similar cost. The integrated LCD and USB combination is the primary reason to choose the PIC24FJ256GU405 over generic 16-bit MCUs. This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.

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PIC24FJ256GU405-I/PT - 256KB Flash USB MCU | Microchip
PIC24FJ256GU405-I/PT

PIC24FJ256GU405-I/PT - 256KB Flash USB MCU | Microchip

The Microchip PIC24FJ256GU405-I/PT is a 16-bit eXtreme Low-Power microcontroller with 256 KB of ECC Flash and 32 KB of RAM, operating up to 32 MHz (16 MIPS) in a 48-pin TQFP package. It integrates a full-speed USB 2.0 device/host/OTG controller, an integrated segmented LCD driver, Core Independent Peripherals (CIPs), and supports OTA firmware updates via dual-partition Flash. A 16-bit microcontroller (MCU) is a programmable processor that uses a 16-bit data path and instruction word, positioned between 8-bit MCUs (lower power, simpler peripherals) and 32-bit MCUs (higher throughput, richer ecosystems). The PIC24F family from Microchip is engineered for low-power, mixed-signal embedded designs, sitting within the broader hierarchy of microcontrollers -> embedded processors -> semiconductors. The PIC24FJ 'GU4/GL4' family specifically targets applications requiring large memory, USB connectivity, LCD drive, and field upgradability. Key features of the PIC24FJ256GU405 include 256 KB ECC Flash with dual-partition support for live firmware update, 32 KB SRAM, a hardware Real-Time Clock Calendar (RTCC) with VBAT retention, four 16-bit timers, a 12-bit ADC with up to 200 ksps conversion rate, multiple UART/SPI/I2C peripherals, and CIP blocks such as CLC, MCCP, and PWM. The device operates from 2.0 V to 3.6 V and offers eXtreme Low-Power (XLP) sleep currents in the nanoamp range. The architecture combines a 16-bit modified Harvard CPU with a 24-bit instruction word and DSP capability (single-cycle MAC), enabling efficient signal processing without burdening the core. Built-in safety features include ECC on Flash, a code-protect lock, a backup oscillator, and a watchdog timer. The 48-pin TQFP (7x7 mm) provides generous I/O for mixed-signal designs. Typical applications include consumer medical devices (glucometers, blood pressure monitors), portable data loggers, USB peripherals (HID, CDC, vendor-class), industrial HMI with integrated segmented LCD, home automation gateways, and battery-powered IoT sensor nodes. The dual-partition Flash enables remote OTA firmware upgrades without service interruption, ideal for field-deployed equipment. When designing with this MCU, route the USB D+/D- lines as a 90-ohm differential pair with matched length, keep the VUSB capacitor close to the VUSB pin, and place the 32.768 kHz crystal within 5 mm of SOSCO/SOSCI to minimize load capacitance error. The integrated segmented LCD driver simplifies BOM cost in metering and HMI designs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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PIC24FJ256GU405T-I/M4 - 256KB Flash 16-bit MCU w/ USB/LCD | Microchip
PIC24FJ256GU405T-I/M4

PIC24FJ256GU405T-I/M4 - 256KB Flash 16-bit MCU w/ USB/LCD | Microchip

The Microchip Technology PIC24FJ256GU405T-I/M4 is a 16-bit PIC24F microcontroller with 256KB of Flash, 32KB SRAM, integrated full-speed USB 2.0, and an integrated segmented LCD controller, housed in a 48-pin UQFN (6x6 mm) package. It executes up to 32 MIPS at 32 MHz, supports 16 MIPS operation with ECC-protected Flash, and provides 10/12-bit ADC capability for mixed-signal sensing. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and peripheral interfaces (UART, SPI, I2C, ADC, timers, GPIO) into one package. The PIC24F family sits within Microchip's broader 16-bit MCU hierarchy: PIC24F (low-power, USB/LCD-focused) -> PIC24 (16-bit mid-range) -> dsPIC (16-bit with DSP extensions) -> PIC32 (32-bit MIPS/M4K). The 'FJ' suffix indicates Flash-based program memory with enhanced peripherals, and the 'U' / 'G' designators signal USB plus Graphics/LCD integration. This combination targets human-interface embedded designs where power budget, USB connectivity, and a segment LCD are all first-class concerns. Key features include dual-partition Flash (up to 256KB) supporting live Over-The-Air (OTA) firmware updates and EEPROM emulation, a hardware Cryptographic Engine (AES/DES/SHA), five 16-bit timers, five DMA channels, four UART, three SPI, three I2C, and 39 general-purpose I/O pins. The integrated segmented LCD driver supports up to 384 segments (depending on package). Power consumption is rated for eXtreme Low Power (XLP) operation with multiple sleep modes down to nanoamp standby currents. Typical applications include USB medical/health devices (glucose meters, blood pressure monitors), industrial HMI panels with segment LCDs, USB barcode scanners, consumer fitness wearables, secure IoT edge nodes using on-chip AES, and battery-powered data loggers requiring live OTA firmware updates. The 48-UQFN package suits space-constrained designs with exposed pad for thermal performance. When designing with this MCU, ensure the supply rail sits within 2.0V-3.6V; drop below 2.0V and Flash programming/ADC accuracy degrade. Use decoupling: 0.1 uF and 1 uF ceramic caps within 5 mm of each VDD pin. Configure the PPS (Peripheral Pin Select) registers early in firmware to avoid pin conflicts between USB and LCD pins. This page synthesizes distributor pricing, drop-in alternative MPNs, design notes, and a comparison matrix against same-family parts that are not available on the manufacturer family chart alone.

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PIC24FJ256GU406-E/MR - 16-bit 256KB Flash USB MCU 64-QFN | Microchip
PIC24FJ256GU406-E/MR

PIC24FJ256GU406-E/MR - 16-bit 256KB Flash USB MCU 64-QFN | Microchip

The Microchip Technology PIC24FJ256GU406-E/MR is a 16-bit microcontroller from the PIC24F 'GU4' family featuring 256KB of Dual Partition Flash, 32KB RAM, full-speed USB 2.0, a segmented LCD controller, and a wide mix of Core Independent Peripherals (CIPs), all housed in a 64-pin 9x9 mm QFN package. It operates at up to 32 MHz (16 MIPS) from a 2.0 V to 3.6 V supply and is rated for the -40 °C to +125 °C extended industrial temperature range. A microcontroller (MCU) is a programmable system-on-chip integrating a processor core, non-volatile program memory, working RAM, and a rich set of on-chip peripherals. The PIC24F family is positioned between 8-bit PIC MCUs and 32-bit ARM Cortex-M parts in Microchip's portfolio, offering low power, deterministic interrupt response, and abundant analog/integration in a small footprint. PIC24F parts target battery-friendly eXtreme Low Power (XLP) applications such as consumer health, wearables, and industrial sensor nodes. Key features include dual-partition flash for live firmware updates, EEPROM emulation, an integrated segmented LCD driver, full-speed USB 2.0 (Host/OTG/Function), 12-bit ADC, multiple UART/SPI/IWM buses, and a rich set of CIPs (CLC, CWG, SMT, RTCC) that offload logic from the CPU. The 9x9 mm QFN-64 footprint keeps board area compact while exposing 53 general-purpose I/O lines. Technically, the device combines a 16-bit modified-Harvard CPU core with a configurable clock tree that supports internal FRC, PLL, and external crystal references, plus a deep-sleep current budget suitable for battery duty. The dual-partition flash allows one image to run while another is being updated, enabling Over-The-Air (OTA) firmware updates without downtime. Typical applications include USB-based smart sensors, fitness/health monitors with LCD readouts, industrial HMI panels, e-metering, USB medical instruments, and low-power IoT edge nodes that benefit from on-chip LCD and USB. The combination of dual-bank flash and USB-OTG is particularly suited to firmware-updatable USB peripherals. Design tip: reserve at least one CIP block (CLC or CWG) for power-good sequencing, and pair the USB D+/D- pair with the manufacturer-recommended 27 ohm series resistors and an external ESD array to pass IEC 61000-4-2 air-discharge testing. Always keep the dual-partition bootloader area outside the application image so live updates never overwrite the running firmware. This page synthesizes distributor pricing from DigiKey and Mouser, same-package drop-in alternatives, and practical design notes not found in the standalone datasheet, helping engineers select, source, and qualify the PIC24FJ256GU406-E/MR for production.

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PIC24FJ256GU406-I/MR - 16-Bit MCU 256KB Flash USB LCD 64-QFN | Microchip
PIC24FJ256GU406-I/MR

PIC24FJ256GU406-I/MR - 16-Bit MCU 256KB Flash USB LCD 64-QFN | Microchip

The Microchip Technology PIC24FJ256GU406-I/MR is a 16-bit microcontroller from the PIC24F eXtreme Low Power (XLP) family with 256KB of ECC Flash, 32KB RAM, and a 32MHz/16-MIPS CPU core, packaged in a 64-pin QFN (9x9 mm). It integrates a full-speed USB 2.0 peripheral, a segmented LCD controller, and a hardware crypto accelerator, while supporting up to 512KB of dual-partition Flash for live Over-The-Air (OTA) firmware updates. An MCU (microcontroller) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and a range of analog and digital peripherals. Within the broader system hierarchy, the PIC24FJ belongs to the 16-bit microcontroller tier -> the PIC24F XLP subfamily -> eXtreme Low Power devices -> Microchip's embedded product portfolio. The 16-bit modified Harvard architecture delivers higher code density and arithmetic throughput than 8-bit AVR/PIC MCUs while retaining deterministic interrupt behaviour familiar to PIC users. Key features of this part include Core Independent Peripherals (CIPs) such as Configurable Logic Cells (CLC), a 12-bit ADC with 500 ksps throughput, multiple UART/SPI/I2C peripherals, a Real-Time Clock and Calendar (RTCC) with backup battery domain, and an integrated segmented LCD driver supporting up to 480 segments. Hardware crypto acceleration (AES, DES, 3DES, SHA, MD5, HMAC) and a true random number generator (TRNG) make it suited to authenticated and secure IoT nodes. Typical applications include battery-powered IoT sensor nodes with USB-C charging, BLE/Sub-GHz gateway controllers, secure medical monitoring devices, industrial HMI panels with segmented LCD readouts, low-power wireless instrumentation, and consumer devices requiring OTA firmware with the dual-partition flash guarantee. The 9x9 mm 64-QFN package supports dense PCB designs while still providing ample GPIO (54+ I/O pins) for peripheral expansion. Designers should use Microchip's MPLAB X IDE with the XC16 compiler and configure the RTCC battery domain with an external coin cell to maintain timekeeping below 1 uA in deep sleep. For secure OTA, place the new image in the inactive partition, verify its signature against a public key stored in secure Flash, then atomically swap partitions on next boot.

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PIC24FJ256GU406-I/PT - 16-Bit MCU, 256KB Flash, USB, LCD, 64-TQFP | Microchip
PIC24FJ256GU406-I/PT

PIC24FJ256GU406-I/PT - 16-Bit MCU, 256KB Flash, USB, LCD, 64-TQFP | Microchip

The Microchip Technology PIC24FJ256GU406-I/PT is a 16-bit eXtreme Low-Power microcontroller from the PIC24FJ 'GU4/GL4' family, featuring 256KB of ECC Flash with dual-partition OTA support, 32KB SRAM, integrated full-speed USB, an LCD controller, and a 12-bit ADC, housed in a 64-pin TQFP (10x10 mm) package. What is a PIC24FJ microcontroller? PIC24FJ is Microchip's 16-bit microcontroller family based on a modified Harvard architecture with 16-bit instructions and a 16-bit data path. It belongs to the broader 'MCU' (microcontroller) category within 'Integrated Circuits > Microcontrollers' and is designed for low-power, mixed-signal embedded applications. The 'FJ' suffix indicates Flash program memory and nanoWatt eXtreme Low-Power technology. The PIC24FJ GU4/GL4 sub-family specifically adds dual-partition Flash for Over-The-Air (OTA) firmware updates, Core Independent Peripherals (CIPs), and an integrated segmented LCD driver, making it suitable for human-machine interface and connected embedded products. Key features include a 32 MHz CPU core delivering up to 16 MIPS, 256KB ECC Flash supporting dual partitions for safe OTA field upgrades, 32KB SRAM, integrated full-speed USB 2.0 (host/OTG capable), an LCD driver with up to 96 segments, a 12-bit ADC with up to 16 channels, multiple UART/SPI/I2C peripherals, and six Core Independent Peripherals that offload the CPU. Power consumption drops to the nanoWatt range in sleep modes, while 2V-3.6V operation supports single-cell Li-Ion or 2xAA battery systems. The architecture combines a 16-bit modified Harvard CPU with tightly-coupled analog and digital peripherals. The dual-partition Flash enables live in-field firmware swap: one partition runs while the other receives new code, then the device reboots into the new image, eliminating downtime during firmware updates. Built-in EEPROM emulation extends data-retention capability beyond the rated Flash endurance, which is essential for applications storing user calibration or settings. Typical applications include battery-powered IoT sensor hubs, USB medical handheld devices, segment-LCD home appliances, HVAC thermostat controls, automotive body and infotainment modules, and industrial HMIs. The integrated USB and LCD significantly reduce BOM cost in human-interface designs where the PIC24FJ256GU406-I/PT acts as a single-chip solution. When designing with this device, ensure 2V-3.6V supply headroom and place the recommended 10uF + 0.1uF decoupling pair within 5 mm of each power pin. Dual-partition OTA flows require careful linker-file configuration and should be tested using the Microchip OTA Bootloader Application Note framework to guarantee fail-safe rollback in field-deployed units. This page synthesizes verified distributor pricing, drop-in alternatives within the same 64-TQFP footprint, and practical design notes not consolidated on the manufacturer datasheet.

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PIC24FJ256GU406T-I/MR - 16-bit 32MHz 256KB Flash MCU | Microchip
PIC24FJ256GU406T-I/MR

PIC24FJ256GU406T-I/MR - 16-bit 32MHz 256KB Flash MCU | Microchip

The Microchip Technology PIC24FJ256GU406T-I/MR is a 16-bit PIC24F microcontroller featuring 256KB of dual-partition Flash, 32KB RAM, a full-speed USB 2.0 device interface, and a segmented LCD driver, all integrated into a 64-pin QFN (9x9 mm) package. Operating at up to 32 MHz (16 MIPS) with supply voltage from 2.0 V to 3.6 V, this device targets low-power embedded applications requiring on-the-go USB connectivity, large code density, and rich human-machine interface support. A microcontroller (MCU) is a single-chip computer containing a CPU core, program memory, data RAM, and integrated peripherals. The PIC24F family uses a 16-bit modified Harvard RISC architecture optimized for deterministic interrupt response and ultra-low-power operation. Within the broader semiconductor taxonomy, the PIC24FJ256GU406 sits in the category: microcontroller -> embedded MCU -> 16-bit MCU -> low-power MCU -> mixed-signal MCU with USB and LCD. This hierarchy helps engineers select compatible firmware, development tools, and compatible alternatives within Microchip's PIC24F ecosystem. Key differentiating features of this part include 256KB of self-programmable Flash with dual-partition OTA support for live firmware updates, 32KB of RAM, a hardware crypto engine (when present in this family), a 10-bit 1.1 Msps ADC, configurable logic cells (CLC), multiple UART/SPI/I2C peripherals, and a segmented LCD driver supporting up to 64 segments. The integrated full-speed USB 2.0 device controller eliminates the need for an external PHY in many embedded designs. The architecture uses a wide 16-bit data path with a 24-bit instruction word, hardware multiply/divide, and a 17-bit x 17-bit single-cycle multiplier. Core Independent Peripherals (CIPs) - such as CLC, Configurable Logic Cells, DMA, and the ADC with hardware accumulation - let designers implement state machines and signal processing without CPU intervention, dramatically reducing active mode time and overall system power. Typical applications include consumer medical devices, IoT sensor nodes with USB charging/diagnostics, industrial control panels with segmented LCDs, automotive body and accessory modules, and battery-powered data loggers with USB interface. The wide 2.0 V to 3.6 V supply range and deep sleep modes make the part suitable for battery- or coin-cell-powered products. When designing with this MCU, allocate sufficient PCB copper under the exposed pad (EP) of the QFN package for thermal dissipation and ground return. Decouple each VDD/VSS pair with a 0.1 uF ceramic capacitor placed within 2 mm of the pin. For USB applications, the 90-ohm differential D+/D- traces must be length-matched within 1 mm and routed over a continuous ground plane. This page synthesizes distributor pricing, drop-in alternatives within the PIC24FJ family, and practical design notes not found on the manufacturer product page alone - the kind of condensed reference a firmware engineer needs during bring-up.

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PIC24FJ256GU406T-I/PT - 16-bit 256KB Flash USB MCU | Microchip
PIC24FJ256GU406T-I/PT

PIC24FJ256GU406T-I/PT - 16-bit 256KB Flash USB MCU | Microchip

The Microchip Technology PIC24FJ256GU406T-I/PT is a 16-bit eXtreme Low-Power microcontroller from the PIC24FJ GU4/GL4 family, delivering 16 MIPS at 32 MHz while integrating 256 KB of ECC Flash, 32 KB RAM, full-speed USB, and an on-chip segmented LCD controller. It is housed in a 64-pin TQFP (10x10 mm) package rated for industrial temperature operation from -40C to +85C, and offers dual-partition Flash for real-time Over-The-Air (OTA) updates and EEPROM emulation. A 16-bit microcontroller (MCU) is a programmable processor built around a wider datapath than classic 8-bit designs, allowing it to compute 16-bit operations in a single instruction cycle. The PIC24F family belongs to the broader category of microcontrollers, embedded processors, and mixed-signal ICs, and is positioned for ultra-low-power applications where deterministic interrupt response and rich connectivity are required. Key features of this part include 256 KB program Flash with ECC, 32 KB SRAM, a 16-channel 12-bit ADC, multiple hardware UART/SPI/I2C peripherals, and Core Independent Peripherals (CIPs) that offload tasks from the CPU. CIPs include CLC, MCCP, DMA, and crypto engines, allowing deterministic event-driven behaviour without CPU intervention. Architecturally, the PIC24FJ GU4 family uses a modified Harvard architecture with a 16-bit datapath, hardware Multiply/Divide unit, and 24-bit instruction words. The wide operating voltage range of 2.0V to 3.6V supports both 3.3V and battery-powered designs. The integrated segmented LCD driver supports up to 384 pixels, eliminating an external driver IC. Typical applications include industrial control panels with LCD displays, USB-connected medical sensors, secure IoT edge nodes requiring OTA firmware updates, automotive body and HMI modules, low-power metering instruments, and USB HID peripherals. The dual-partition Flash and crypto accelerators make it especially attractive for products requiring authenticated field updates. When designing with this device, ensure that the Vcap pin has a 4.7 uF-10 uF low-ESR capacitor as specified in the datasheet, and that unused I/O are configured as outputs or inputs with pull-ups to minimise current draw. The part supports MPLAB X IDE with the XC16 compiler and the MPLAB Code Configurator for rapid peripheral setup. This page synthesises verified distributor pricing, drop-in compatible same-family alternatives, and practical engineering guidance not found in the manufacturer datasheet alone.

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PIC24FJ256GU408-E/PT - 256KB Flash USB MCU, 80-TQFP | Microchip
PIC24FJ256GU408-E/PT

PIC24FJ256GU408-E/PT - 256KB Flash USB MCU, 80-TQFP | Microchip

The Microchip Technology PIC24FJ256GU408-E/PT is a 16-bit PIC24F microcontroller that integrates 256 KB of ECC Flash, 32 KB RAM, a full-speed USB 2.0 controller, and a segment-LCD driver in a single 80-pin TQFP (12x12 mm) package. It executes up to 16 MIPS at 32 MHz, runs from 2.0 V to 3.6 V, and is qualified for the -40C to +125C extended temperature range indicated by the "/E" suffix, with the "/PT" suffix designating the TQFP-80 package. A 16-bit microcontroller (MCU) is a programmable processor with a 16-bit data path, register file, and ALU that delivers higher code density and arithmetic throughput than 8-bit cores while retaining deterministic real-time behavior. In the broader taxonomy the PIC24F belongs to the PIC24 family, which sits within Microchip's 16-bit DSC/MCU portfolio and ultimately under the embedded controller and power-management-aware mixed-signal IC hierarchy. The "/GU4" sub-family specifically adds Dual Partition Flash for live Over-The-Air (OTA) firmware upgrades and EEPROM emulation, plus a rich set of Core Independent Peripherals (CIPs) that offload tasks from the CPU. Key features include 256 KB (256K x 8) ECC Flash, 32 KB RAM, hardware USB 2.0 full-speed with on-chip transceiver, an integrated segment-LCD driver, multiple UART/SPI/I2C peripherals, a 12-bit A/D converter, and CIPs that combine to reduce bill-of-materials cost in low-power USB- and display-equipped designs. The Dual Partition Flash architecture lets firmware swap between two complete application images during an OTA update, eliminating the need for an external bootloader MCU. Architecture-wise the PIC24FJ uses a modified Harvard core with a 16-bit instruction word and 24-bit instruction word support for richer addressing. The integrated USB physical layer, segmented LCD controller, and RTCC combine to make this part a single-chip solution for tethered and battery-powered human-interface products. Designers get field-upgradeable firmware without an external memory device. Typical applications include USB sensor nodes, medical glucose meters and patient monitors, consumer remote controls with segment-LCD displays, industrial HMI panels, and home appliances that need firmware updates over USB. The combination of USB, LCD, and Dual Partition Flash removes external peripheral ICs that competitors typically still require. When designing with this MCU, reserve a USB D+/D- trace impedance of 90 ohms differential and place the VBUS detection resistor network per the Microchip reference design. For OTA updates, plan a fail-safe rollback strategy in the partition-switch routine so a corrupted image cannot brick the device. This page synthesizes Microchip datasheet parameters, distributor pricing and lead time, drop-in same-family Microchip alternatives, and practical design notes not found in the manufacturer's marketing brief, giving engineers a faster route to a verified, in-stock purchase decision.

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PIC24FJ256GU408-I/PT - 16-bit MCU, 256KB Flash, USB, LCD | Microchip
PIC24FJ256GU408-I/PT

PIC24FJ256GU408-I/PT - 16-bit MCU, 256KB Flash, USB, LCD | Microchip

The Microchip PIC24FJ256GU408-I/PT is a 16-bit microcontroller from the PIC24F family, featuring a 32 MHz (16 MIPS) CPU core, 256 KB of ECC Flash with Dual Partition for live OTA firmware updates, and 32 KB SRAM, packaged in an 80-pin TQFP (12x12 mm). It integrates a full-speed USB 2.0 device/host/OTG transceiver, a segmented LCD controller supporting up to 132 segments, and multiple Core Independent Peripherals (CIPs) including 9 CCP/SCCP modules and a Parallel Master Port. What is a PIC24F microcontroller? The PIC24F is a 16-bit MCU family from Microchip built on a modified Harvard architecture with a 16-bit data path and 24-bit instruction word. Within the broader taxonomy, PIC24F belongs to "Microcontroller > 16-bit MCU > Low-Power MCU > Mixed-Signal MCU". The 'FJ' series adds wide Flash and rich peripherals for human-interface and consumer applications, while the 'GU4/GL4' sub-family extends that to OTA-capable dual-partition Flash for connected devices. Key differentiating features include 256 KB ECC Flash supporting EEPROM emulation, 32 KB SRAM, a 69-pin I/O count, 10-bit 1.1 Msps ADC, configurable logic cells (CLC), and CIPs that offload tasks from the CPU to reduce power and code complexity. The PIC24FJ256GU408 supports sleep currents as low as sub-uA in Deep Sleep modes, enabling battery-friendly connected-product designs. Technically, the device is manufactured on an advanced low-power CMOS process and operates from 2.0 V to 3.6 V (typical 3.3 V), with integrated voltage regulation, brown-out reset, and multiple clock sources including a 32 kHz secondary oscillator and PLL-derived 32 MHz system clock. Hardware crypto (DES/3DES/AES/SHA) and RNG accelerators are available on selected family members. Typical applications include low-power USB peripherals, IoT sensor hubs, metering and instrumentation with LCD readouts, consumer appliances, point-of-sale terminals, and any battery-powered embedded design that needs reliable OTA firmware updates over USB. When designing with this part, ensure your linker script reserves the alternate panel of the dual-partition Flash for safe rollback, and that the LCD bias network matches the chosen glass (4x32 typical). Use the on-board USB PHY with proper board-edge ESD protection to pass IEC 61000-4-2. This page synthesizes current distributor pricing, drop-in same-family alternatives, and practical design considerations - information beyond what the manufacturer datasheet alone provides.

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