This part is a kind of semiconductor called TMS9902.
Function of this product has TMS9902.
Manufacturers : ETC
Image and pinout :
Some of the text within the PDF file :
TMS9902 TMS9902 TMS9902 TMS9902 CRU CPU TMS9902 I/O 1 2 3 !"#$%&'( ) *!"+,- TMS9902 .&/012 3$4567 8#$9:;<=> ?@ 45ABCDEFGHI:; JKLMNO 45AB TMS9902 3$PQRSTRUS> #$V%W%&XY/0Z )>[ TMS9902 ] NMOS ^_S` 18 abc defg ]+5V hi j& )k TTL lm TMS9902 INTB TxD RxD CRUIN RTSB CTSB DSRB CRUOUT VSS(GND) <-<---> <-<---> --> --> --1 18 2 17 3 16 4 15 5 TMS9902 14 6 13 7 12 8 11 9 10 --<-<-<-<-<-<-<-<-VCC (+5V) CEB CLKB CRUCLK S0 (MSB) S1 S2 S3 S4 (LSB) ab CRUIN CRUOUT CRUCLK CEB S0~S4 CLKB DSRB abno t CPU uv<= - CPU {uv<| CRU uv} w CRU ~N '( uvXY pq <= <| <| <| <| <| <| rs w]xy* TMS9901 zj w]xy* TMS9901 zj w]xy* TMS9901 zj w]xy* TMS9901 zj w]xy* TMS9901 zj TMS9904 CLK3 ) USuv<+, [ ... ]
TMS9902 PDF Datasheet Download
