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ST7787 датащи(PDF) 30 Page - Sitronix Technology Co., Ltd. |
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ST7787 датащи(HTML) 30 Page - Sitronix Technology Co., Ltd. |
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30 / 217 page ![]() ST7787 V1.7 2008.04.18 30 8. Timing chart 8.1 Parallel interface characteristics: 18, 16, 9 or 8-bits bus (8080-series MCU interface) Fig. 8.1.1 Parallel interface timing characteristics (8080-series MCU interface) Signal Symbol Parameter Min Max Unit Description TAST Address setup time 10 - ns D/CX TAHT Address hold time (Write/Read) 10 - ns - TCHW Chip select “H” pulse width 0 - ns TCS Chip select setup time (Write) 15 - ns TRCS Chip select setup time (Read ID) 45 - ns TRCSFM Chip select setup time (Read RAM) 355 - ns TCSF Chip select wait time (Write/Read) 10 - ns CSX TCSH Chip select hold time 10 - ns -(3-transfer for one pixel) TWC Write cycle 66 - ns TWRH Control pulse “H” duration 20 - ns WRX TWRL Control pulse “L” duration 20 - ns -(15Mhz) TRC Read cycle (ID) 160 - ns TRDH Control pulse “H” duration (ID) 90 - ns RDX (ID) TRDL Control pulse “L” duration (ID) 45 - ns When read ID data TRCFM Read cycle (FM) 450 - ns TRDHFM Control pulse “H” duration (RAM) 90 - ns RDX (FM) TRDLFM Control pulse “L” duration (RAM) 355 - ns When read from frame memory TDST Data setup time 20 - ns TDHT Data hold time 20 - ns TRAT Read access time (ID) - 40 ns TRATFM Read access time (FM) - 340 ns D[17:0] TODH Output disable time 20 80 ns For maximum CL=30pF For minimum CL=8pF Note 1: VDDI=1.65 to 3.3V, VDD=2.45 to 3.3V, AGND=DGND=0V, Ta=-30 to 70 ℃ |
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