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M32C/86 数据表(PDF) 92 Page - Renesas Technology Corp |
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M32C/86 数据表(HTML) 92 Page - Renesas Technology Corp |
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92 / 505 page ![]() Page 69 9 7 4 f o 5 0 0 2 , 8 0 . p e S 0 0 . 1 . v e R 0 0 1 0 - 4 0 2 0 B 9 0 J E R 8. Bus ) T 6 8 / C 2 3 M , 6 8 / C 2 3 M ( p u o r G 6 8 / C 2 3 M (1) Separate Bus with 2 Wait States (2) Multiplexed Bus with 2 Wait States BCLK RD CSi (i=0 to 3) RDY BCLK RD CSi (i=0 to 3) RDY tsu(RDY - BCLK) 1st cycle 2nd cycle 3rd cycle 4th cycle tsu(RDY - BCLK) Timing to receive RDY tsu(RDY-BCLK): Setup time for RDY input Timing to receive RDY for j wait(s): j+1 cycles (j = 1 to 3) 1st cycle 2nd cycle 3rd cycle 4th cycle : Wait states inserted by RDY : Wait states inserted by program (1) (1) NOTES: 1. The chip-select signal (CSi) may be output longer depending on CPU state such as the instruction queue buffer. Timing to receive RDY _____ ________ Figure 8.11 RD Signal Output Extended by RDY Signal |
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