32 MHz 8-bit PIC MCU with 3.5 KB Flash in a 14-TSSOP
The PIC16F1613-I/ST: It packs 12 general-purpose I/O pins, an 8-channel 10-bit ADC, and on-chip peripherals including brown-out reset, power-on reset, PWM, and watchdog timer — enough to handle sensor monitoring, simple motor control, or user-interface tasks without external glue logic.
3.5 KB Flash and 256 B RAM — sizing the firmware budget
The 3.5 KB Flash (organized as 2K x 14 words) is the hard ceiling for compiled code. The 256 x 8 RAM (256 bytes) limits stack depth and buffer count; expect to manage interrupt nesting carefully and avoid large lookup tables in RAM.
14-TSSOP footprint and layout considerations
For hand-prototyping or rework, the 0.65 mm lead pitch is manageable with a fine-tip iron and flux, but the tight pad spacing means bridging is a real risk without a microscope. The 14-TSSOP footprint is shared with the PIC16F1613-I/P (PDIP-14) for pin-compatibility, but the PDIP variant is a different package entirely and requires a separate PCB layout.