HT8955A Datasheet - Holtek Semiconductor Inc

HT8955A Voice Echo

The HT8955A is a CMOS LSI digital audio signal delay processor. It is designed for audio system applications including echo generators, karaoke systems, sound effect generators, etc. The chip consists of a built-in pre-amplifier, on-chip oscillator, DRAM interface, 10-bit A/D and D/A converters as w.

HT8955A Features

* Operating voltage: 5.0V Long delay time

* 0.8 seconds (SEL=VSS, 256K DRAM)

* 0.2 seconds (SEL=VDD/open, 64K DRAM) 25kHz sampling rate Continuous variable delay time

* Built-in pre-am

HT8955A_HoltekSemiconductorInc.pdf