The PSoC 3 (Programmable Embedded System-on-Chip) family consists of 8051-core microcontroller devices featuring configurable blocks of analogue and digital logic, and programmable interconnects. Additionally, Flash program memory, SRAM data memory and configurable I/O are included.

PSoC® 3 is a true programmable embedded system-on-chip, integrating configurable analog and digital peripherals, memory, and a microcontroller on a single chip. The PSoC 3 architecture boosts performance. PSoC devices employ a highly configurable system-on-chip architecture for embedded control design. They integrate configurable analog and digital circuits, controlled by an on-chip microcontroller. A single PSoC device can integrate as many as 100 digital and analog peripheral functions, reducing design time, board space, power consumption, and system cost while improving system quality.

8051 core plus DMA controller
Ultra low power with industry's widest voltage range
Programmable digital and analog peripherals enable custom functions
Flexible routing of any analog or digital peripheral function to any pin