PIC24FJ512GU410-E/PT
PIC24FJ512GU410-E/PT - 512KB Flash USB LCD MCU | Microchip
The Microchip Technology PIC24FJ512GU410-E/PT is a 16-bit PIC24F microcontroller with 512 KB ECC Flash, 32 KB RAM, full-speed USB 2.0, and an integrated LCD controller, housed in a 100-pin TQFP (PT) package measuring 12x12 mm. It executes instructions at up to 32 MHz (16 MIPS) and operates from 2.0 V to 3.6 V, making it suitable for battery-powered and USB-powered embedded designs.
A 16-bit microcontroller (MCU) is a programmable processor with a 16-bit data path, instruction word, and register width. Within the embedded hierarchy it sits between 8-bit MCUs (lower cost, simpler peripherals) and 32-bit ARM Cortex-M MCUs (higher performance, richer ecosystems). The PIC24F family specifically targets ultra-low-power and mixed-signal applications, and the GU4/GL4 sub-family adds dual-partition Flash for live Over-The-Air (OTA) firmware updates without device downtime - a critical capability for connected products deployed in the field.
Key features include 512 KB of ECC-protected Flash supporting Dual Partition / EEPROM Emulation, 32 KB SRAM, a 14-channel 12-bit ADC, four I2C, four SPI, and five UART peripherals, plus a hardware Cryptographic Engine (AES, DES, 3DES, SHA, MD5, and RNG). Core-independent peripherals (CIPs) such as Configurable Logic Cells (CLC), Multiple Output Capture/Compare/PWM, and a 32-bit Real-Time Clock Calendar enable event-driven designs that minimize CPU wake-ups and reduce average power consumption below 1 uA in Deep Sleep mode.
The device's architecture combines a modified Harvard bus with a 16-bit instruction word and 24-bit instruction address space, giving a deterministic interrupt latency of 5 cycles. The full-speed USB 2.0 peripheral with integrated PHY supports HID, CDC, MSD, and Vendor classes without an external transceiver. The segmented LCD driver can directly control up to 480 pixels (8 commons x 60 segments) with internal charge pump and contrast bias generation, eliminating the need for an external LCD bias network.
Typical applications include low-power IoT sensor nodes with OTA firmware update capability, USB HID human-interface devices (keyboards, mice, touch panels), medical devices such as glucose meters and infusion pumps, industrial HMI panels with integrated LCD, secure authentication tokens using the on-chip AES engine, and home automation controllers with segmented displays. The wide operating temperature range of -40C to +125C (E suffix indicates Extended temperature grade) also supports outdoor and industrial deployments.
When designing with this device, allocate pin remapping carefully between the LCD segment bus and parallel master port functions - they share pins and cannot be used simultaneously. Ensure the dual-partition Flash bootloader (Boot-Secure mode) is provisioned before locking the configuration registers, and consider using the on-chip Crypto Engine to offload AES-256 from the CPU rather than implementing it in firmware.
This page synthesizes DigiKey/Mouser pricing, drop-in TQFP-100 alternatives from the PIC24FJ family, and practical low-power design notes that go beyond the manufacturer datasheet.
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