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We present LIT, a low power, low cost audio processor for information dissemination to and among illiterate people in developing regions. The 265K gate, 8 million transistor, 23mm 2 , ARM Cortex M0 processor uses a novel memory hierarchy consisting of an on chip 128kB true LRU cache and off-chip flash. It is designed for efficient operation on Carbon Zinc batteries and has a high-level of integration to reduce cost.doi:10.1109/tcsi.2013.2264693 fatcat:dppdwsdblvh5hdk5572o5mg6ci