PIC24FJ64GA308T-I/PT
PIC24FJ64GA308T-I/PT - 64KB Flash 16-bit MCU 80-TQFP | Microchip
The Microchip Technology PIC24FJ64GA308T-I/PT is a 16-bit PIC24F microcontroller featuring nanoWatt XLP eXtreme Low Power technology, 64KB of flash program memory (22K x 24), 8KB of RAM, and 69 I/O pins, packaged in an 80-pin TQFP (12x12 mm). It operates up to 32 MHz delivering 16 MIPS performance, integrates a segmented LCD controller, and offers a deep Sleep current of approximately 340 nA with full RAM retention plus a dedicated VBAT pin for RTC backup.
A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory (typically flash), volatile data memory (RAM), and a rich set of on-chip peripherals such as timers, ADCs, communication interfaces, and I/O. The PIC24F family is Microchip's 16-bit Modified Harvard architecture line, positioned between the 8-bit PIC16/PIC18 families and the 32-bit PIC32MX/DA families, and is widely used in consumer, industrial, and battery-powered embedded applications. The "FJ" suffix denotes the flash-based, nanoWatt XLP ultra-low-power variant family.
Key features include 64KB (22K x 24 instructions) self-programmable flash, 8KB SRAM, an integrated 10-bit/12-bit ADC (per LCSC description), up to 16 channels of ADC input, multiple serial interfaces (I2C, IrDA, LINbus, SPI, UART/USART), a segmented LCD controller supporting up to 480 segments, and peripherals including DMA, PWM, brown-out detect/reset, watchdog timer, and POR. The nanoWatt XLP technology offers multiple power-saving modes and a low-voltage Sleep mode retaining RAM at roughly 340 nA.
The device uses Microchip's PIC24F core with a 16-bit wide datapath and 24-bit instruction word, supporting C and assembly development under MPLAB X IDE and the MPLAB XC16 compiler. The architecture features deterministic interrupt latency, a hardware multiply/divide engine, and rich DMA capability, making it suitable for real-time control loops and event-driven firmware. The segmented LCD controller can directly drive glass displays without external driver ICs in many configurations.
Typical applications include battery-powered portable products, IoT edge sensor nodes, industrial metering with LCD readouts (gas/water/heat meters), medical handheld devices, consumer electronics with LCD UI, automotive body and HVAC subsystems, and home appliance control boards with segment displays. The combination of low-power sleep, RTC backup via VBAT, integrated LCD, and ample I/O makes it well suited for mains-and-battery hybrid designs.
When designing with this part, ensure that the on-chip voltage regulator's decoupling (a 10 uF bulk capacitor on VDDCORE / AVDD plus 0.1 uF ceramic bypass) is placed close to the package, and verify the trace length on MCLR to avoid in-circuit programming glitches. The wide operating voltage range simplifies both 3.3 V and 5 V mixed designs, and the segmented LCD controller can simplify BOM cost compared to designs that pair an MCU with an external LCD driver.
This page consolidates verified distributor pricing, drop-in alternatives, design notes, and application guidance drawn from the manufacturer datasheet and major distributor listings — content not synthesized on the original manufacturer page.
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