HT2844 Datasheet, PDF (1/18 Pages) Holtek Semiconductor Inc – 4-Sound Generator

HT2844
4-Sound Generator
Features
• _{Single power supply: 2.4V~3.3V}
• _{Low standby current: 1µA (Typ.)}
at VDD= 3V
• _{Auto power-off function}
• _{Eight different sound sections}
• _{Speaker or direct piezo application}
• _{LED flash drive output}
• _{Minimal external components}
General Description
The HT2844 is a CMOS LSI chip designed for
use in sound effect products. It is equipped with
tone circuit, noise circuit, and other control
logic to generate various sounds including rifle
fire, machine gun, booming, door bell, Alarm,
and so forth. Customer’s supplied sound source
can be analyzed and programmed into an inter-
nal ROM by changing a mask layer during de-
vice fabrication. The HT2844 is suitable for
various toy applications.
Pin Assignment
Pad Assignment
Chip size: 81 × 67 (mil)²
* The IC substrate should be connected to VDD
in the PCB layout artwork.
1
11th July ’97