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TT1628 - keyboard Scan Dedicated Drive

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TT1628 、 TT1628 LED(), 10 , 4 , 3 / , , , , 3 MCU 、、LED 。 ,。VCR、VCD、DVD 。 、 · (10 ×7 ~ 13 ×4 ) · (10×2) · (8 ) · RC · (CLK,STB,DIO) · · :SOP28 · CMOS · 、 : TS 1 DIO 2 CLK 3 STB 4 KEY1 5 KEY2 6 VDD 7 SEG1_KS1 8 SEG2_KS2 9 SEG3_KS3 10 SEG4_KS4 11 SEG5_KS5 12 SEG6_KS6 13 SEG7_KS7 14 28 VSS 27 GRID1 26 GRID2 25 VSS 24 GRID3 23 GRID4 22 VSS 21 VDD 20 SEG13_GRID5 19 SEG12_GRID6 18 SEG11_GRID7 17 SEG10_KS10 16 SEG9_KS9 15 SEG8_KS8 、: TS DIO / CLK /,。 N-ch open drain . 10K 。 , 1-12 TT1628 STB KEY1~KEY2 VDD SEG1_KS1~ SEG10_KS10 SEG11_GRID7 ~ SEG13_GRID5 VSS GRID1~ GRID4 ,。STB ,, 。STB ,CLK () (),p (/ / ) () ,N .