PIC24FJ192GB108-I/PT
PIC24FJ192GB108-I/PT - 192KB Flash USB MCU 80-TQFP | Microchip
The Microchip Technology PIC24FJ192GB108-I/PT is a 16-bit PIC24F microcontroller with 192KB Flash, 16KB RAM, integrated USB On-The-Go (OTG), and a 32MHz CPU core, housed in an 80-pin TQFP (12x12mm) package. Headline parameters: 192KB (65.5K x 24) program Flash, 16KB RAM, 80-TQFP (12x12) package, 2.0V-3.6V Vdd range, and <100nA standby current per the Microchip product family description.
A PIC microcontroller (MCU) is a compact integrated circuit containing a CPU core, program memory (Flash), data memory (RAM), and a rich set of peripherals (timers, UARTs, ADC, communication interfaces). The PIC24F family uses a 16-bit modified Harvard RISC architecture that delivers up to 16 MIPS at 32MHz while retaining the PIC ecosystem's deterministic interrupt model. Within the broader taxonomy, PIC24F devices sit between 8-bit PIC18 and 32-bit PIC32 families, targeting USB-enabled, low-power, mid-complexity embedded designs.
Key features include a full-speed USB 2.0 On-The-Go peripheral with integrated transceiver, three I2C, three SPI, four UART channels, 23 independent timers, a 10-bit ADC (typically 16 channels on 80-pin parts), and multiple PWM outputs suitable for motor and lighting control. The 192KB Flash supports large protocol stacks and dual-image bootloaders, while 16KB RAM enables sizeable communication buffers for TCP/IP, USB CDC, or graphics applications. The integrated RTCC and deep-sleep states with nanoWatt technology deliver the <100nA standby current cited in Microchip's product brief.
Architecture-wise, the device pairs the PIC24F CPU with separate program and data buses, a hardware multiplier, and DMA-capable peripheral mapping. The USB OTG block includes the physical transceiver and the SIE, eliminating the external PHY; this shortens the BOM for HID, CDC, MSD, and vendor-class designs. The 80-pin TQFP exposes up to 65 general-purpose I/O lines, allowing direct interface to TFT displays, capacitive touch controllers, and external memory.
Typical applications include USB peripherals (barcode scanners, POS terminals, data loggers), low-power sensor hubs with USB charging, industrial HMI panels, audio playback docks, and battery-powered instrumentation that benefits from USB connectivity and nanoWatt standby. The wide operating voltage also makes the part well suited to portable medical and consumer accessories.
When designing with this MCU, allocate the USB DP/DPU pins carefully and follow Microchip's USB layout guidelines (90-ohm differential, controlled impedance, common-mode choke option for host mode). Verify Vdd rise time and decoupling (typically 100nF + 4.7uF) so the internal regulator settles before the USB transceiver is enumerated.
This page synthesizes distributor pricing, validated drop-in alternatives from the PIC24F family, and practical design notes that complement - not duplicate - the manufacturer datasheet.
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