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T89C51RD2-RDTIM 数据表(PDF) 90 Page - ATMEL Corporation |
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T89C51RD2-RDTIM 数据表(HTML) 90 Page - ATMEL Corporation |
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90 / 104 page ![]() 90 T89C51RD2 4243G–8051–05/03 External Data Memory Read Cycle Serial Port Timing - Shift Register Mode ALE PSEN RD PORT 0 PORT 2 A0-A7 DATA IN ADDRESS OR SFR-P2 T AVWL T LLWL T RLAZ ADDRESS A8-A15 OR SFR P2 T RHDZ T WHLH TRLRH T LLDV T RHDX T LLAX T AVDV Symbol Parameter TXLXL Serial port clock cycle time TQVHX Output data set-up to clock rising edge TXHQX Output data hold after clock rising edge TXHDX Input data hold after clock rising edge TXHDV Clock rising edge to input data valid Table 51. AC Parameters for a Fix Clock Symbol -M -L Units MinMax MinMax T XLXL 300 300 ns T QVHX 200 200 ns T XHQX 30 30 ns T XHDX 00 ns T XHDV 117 117 ns |
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