What this 8-bit PIC brings to a USB-enabled design
The Microchip PIC16F1455-I/JQ is an 8-bit PIC MCU from the PIC® XLP™ 16F series, built around a 48MHz core with 14KB of Flash program memory and 1K x 8 of RAM.
48 MHz core and the USB clock tree
The 48 MHz internal oscillator feeds the USB peripheral for full-speed operation without an external crystal.
Memory budget for the BOM line
14 KB of Flash (8K x 14 words) and 1 KB of SRAM define the firmware envelope.
Analog and digital peripheral mix
Five 10-bit ADC channels and one 5-bit DAC are on board, enough for reading a few sensors or generating a simple analog output. The ADC can be auto-triggered from a timer, which helps for periodic sampling without CPU intervention. The PWM module supports up to two outputs, useful for LED dimming or driving a small DC motor. Brown-out detect and POR are standard — the BOR threshold is programmable, so you can set the reset voltage to match the supply rail's dropout characteristic.
Package and thermal pad considerations
The exposed pad is the main thermal and electrical ground path.