This part is a kind of semiconductor called S4305QE.

Function of this product has 21/32/43/60 VOICE ROM.

Manufacturers : Mosel Vitelic Corp

Image and pinout :

Some of the text within the PDF file :

MOSEL VITELIC INC. preliminary MSS2105/S3205/S4305/S6605 21"/32"/43"/60 " VOICE ROM Matrix addressing mode: a. 56 sentences can be accessed by 8x7 wiring matrix. b. Sentence is numbered by 00 through 55. c. Section is located and numbered by 0 through 127. d. Total section number of all sentences is up to 256. CPU addressing mode: a. 128 sections can be accessed by 7 address bits with an enable strobe trigger. b. Section is located and numbered by 00 through 127 . Power on trigger play is available by bonding V SS and trigger together. A dedicate LED output pin with 6 Hz flash is provided to tell the audio status. Playall function (OKY) plays all up to 64 defined sentences one by one by single trigger. Playnext (sequential) function (OKY) : one trigger plays next sentence of up to 64 def [ ... ]

S4305QE PDF Datasheet Download