This paper presents the MIPA4k, a 64times64 cell mixed-mode image processor array chip. The processor cell includes an image sensor, A/D/A conversion, embedded digital and analog memories and hardware-optimized grayscale and binary processing cores. This paper presents the architecture of the processor cell and the different functional hardware. The processor has been manufactured in a 0.13 micron CMOS technology and the chip size is 5.1times4.5 mm² with a cell area of 72times61 mum².