SN67042 speech controller december 20, 2000 1 ? introduction SN67042 is a 42 seconds single chip voice synthesizer ic which contains i/o pins and a tiny controller. by programming through the tiny controller, user?s applications including section combination, trigger modes, output status, and other logic functions can then be easily implemented. ? features ? single power supply 2.4v - 5.1v ? built in a tiny controller ? 42 seconds voice capacity are provided ? two 4-bit i/o ports are provided ? 64*4 bits ram are provided ? maximum 16k program rom is provided ? readable rom code data ? built in a high quality speech synthesizer ? adaptive playing speed from 2.5k-20khz is provided ? fixed current d/a output is provided to drive external connected transistor for sound output ? low voltage reset ? pin assignment symbol i/o function description p20 i/o bit0 of i/o port 2 p21 i/o bit1 of i/o port 2 p22 i/o bit2 of i/o port 2 p23 i/o bit3 of i/o port 2 p30 i/o bit0 of i/o port 3 p31 i/o bit1 of i/o port 3 p32 i/o bit2 of i/o port 3 p33 i/o bit3 of i/o port 3 v dd i positive power supply osc i oscillation com ponent connection pin test i for testing only gnd i negative power supply v o o d/a current output
SN67042 speech controller december 20, 2000 2 ? absolute maximum rating items symbol min max unit. supply voltage v dd -0.3 6.0 v input voltage v in v ss -0.3 v dd +0.3 v operating temperature t op -20.0 70.0 o c storage temperature t stg -55.0 125.0 o c ? electrical characteristics item sym. min. typ. max. unit condition operating voltage v dd 2.4 3.0 5.1 v standby current i sby --2.0 u av dd =3v, no load operating current i opr - - 250 u av dd =3v, no load input current of p1 ii - 3 - ua v dd =3v drive current of p2,p3 i od 1.5 2 - m av dd =3v,v o =2.4v sink current of p2,p3 i os 2.0 3 - m av dd =3v,v o =0.4v d/a output current i vo 2.0 3.0 4.0 m av dd =3v,v o =0.7v oscillation freq. f osc -1.0-mhzv dd =3v
SN67042 speech controller december 20, 2000 3 ? bonding pad SN67042 note: the substrate must be connected to vss in pcb layout.
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