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ST7715 датащи(PDF) 21 Page - Sitronix Technology Co., Ltd. |
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ST7715 датащи(HTML) 21 Page - Sitronix Technology Co., Ltd. |
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21 / 167 page ![]() ST7715 V1.5 21 2009-12-04 8 Timing chart 8.1 Parallel interface characteristics: 18, 16, 9 or 8-bit 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 FM) 350 ns TCSF Chip select wait time (Write/Read) 10 ns CSX TCSH Chip select hold time 10 ns - TWC Write cycle 100 ns TWRH Control pulse “H” duration 30 ns WRX TWRL Control pulse “L” duration 30 ns 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 (FM) 150 ns RDX (FM) TRDLFM Control pulse “L” duration (FM) 150 ns When read from frame memory |
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