PIC24FJ128GA610T-I/BG
PIC24FJ128GA610T-I/BG - 16-bit 32MHz MCU, 128KB Flash, 121-TFBGA
The Microchip Technology PIC24FJ128GA610T-I/BG is a 16-bit RISC microcontroller from the PIC24F family, featuring a 32 MHz maximum CPU clock, 128 KB of self-programmable Flash program memory (43K x 24 words) and 32 KB of SRAM data RAM, housed in a 121-ball 10x10 mm Thin-profile Fine-pitch Ball Grid Array (TFBGA / package code BG). This CMOS device integrates a rich peripheral set including multiple UART, SPI, I2C and IrDA interfaces, plus configurable logic cells (CLC), an LCD driver, a Charge Time Measurement Unit (CTMU), a Real-Time Clock and calendar, and a 10-bit ADC and DAC for mixed-signal designs. The 'T' suffix denotes tape-and-reel packaging, 'I' is the industrial temperature grade (-40 C to +85 C), and 'BG' is the 121-ball TFBGA package code.
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and a broad set of peripherals. Within the broader taxonomy it sits at: microcontroller -> embedded controller -> 16-bit MCU -> RISC MCU -> PIC24F family -> semiconductor. The PIC24F architecture uses a 16-bit modified Harvard core with a 16-element working register array, enabling most instructions to execute in a single cycle and giving the family its headline 16 MIPS performance at 32 MHz. Its peripheral pin-select (PPS) remapping feature lets designers route digital functions to a wide range of physical pins, simplifying PCB layout.
Key features of the PIC24FJ128GA610 include 128 KB Flash, 32 KB RAM, hardware multiplier and divider, DMA, RTCC with backup power, an integrated LCD driver supporting up to 480 segments, a 10-bit 1.1 Msps ADC with up to 32 analog inputs, multiple capture/compare/PWM modules, and a CTMU for capacitive touch and time measurement. The 121-ball TFBGA package offers the largest pin count of the GA610 family, exposing the maximum number of I/O, peripheral and analog channels.
The PIC24FJ128GA610 uses a low-power modified Harvard architecture with a wide operating voltage range of 2.0V to 3.6V, multiple power-saving modes (Sleep, Idle, Doze), and a low-power RTCC that can run from a backup coin cell. The 16 MIPS throughput is delivered through a single-cycle instruction path and a hardware multiply/divide engine, while DMA offloads data movement from the CPU for high-throughput peripheral streams.
Typical applications include graphical user interfaces (GUI) with integrated LCD, low-cost touch sensing for white goods and consumer appliances, industrial control panels, USB host/device connectivity (in combination with the GB610 companion variant), sensor hubs, home automation gateways, and medical handhelds. The combination of large memory, ample I/O and integrated analog makes it well suited to single-chip product designs that previously required an external MCU plus companion logic.
When designing with this part, carefully plan the PCB escape routing for the 0.8 mm pitch BGA balls: a 4-layer board with microvia-in-pad is recommended for clean fan-out. Decouple every VDD/VSS pair with 100 nF X7R capacitors placed as close as possible to the balls, and add a single bulk 4.7 uF to 10 uF tantalum or ceramic capacitor near the regulator. Use the PPS feature to simplify routing but verify signal integrity on high-speed SPI or I2S lines routed near analog inputs.
This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design notes not all found together in the manufacturer datasheet.
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