ocr: INTEGRATED CIRCUIT TOSHIBA T6721A, T6772 TECHNICAL DATA T6684 (1)-2 T6772, T6684 (Mask ROM) PIN NO. Structure Funccional Explanation PIN Name ):DIP FP 1/0 Puli-ap/doun DO 1( (17) 4-bit bus line D1 2 (18) Address data input at sett- D2 4 (19) Input None ing of start address. D3 5 (20) DTRD 6 (21) Data sizing read LSI. pulse from synche- Serial data 7 (22) 3-state thesizing LSI. output Hz to during syn- DI output nonselection and power down. ALD 8 (23) Start synthesizing address LSI. set pulse from ROM RST 9 (24) LSI. Initialize from synthesizing ROM ADR 11 (25) Input None sizing Address LSI. re ...
