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AT90LS8535-4AI Datasheet(PDF) 16 Page - ATMEL Corporation |
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AT90LS8535-4AI Datasheet(HTML) 16 Page - ATMEL Corporation |
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16 / 127 page  16 AT90S/LS8535 1041H–11/01 Figure 20. The Parallel Instruction Fetches and Instruction Executions Figure 21 shows the internal timing concept for the register file. In a single clock cycle an ALU operation using two register operands is executed and the result is stored back to the destination register. Figure 21. Single Cycle ALU Operation The internal data SRAM access is performed in two System Clock cycles as described in Figure 22. Figure 22. On-chip Data SRAM Access Cycles System Clock Ø 1st Instruction Fetch 1st Instruction Execute 2nd Instruction Fetch 2nd Instruction Execute 3rd Instruction Fetch 3rd Instruction Execute 4th Instruction Fetch T1 T2 T3 T4 System Clock Ø Total Execution Time Register Operands Fetch ALU Operation Execute Result Write Back T1 T2 T3 T4 System Clock Ø WR RD Data Data Address Address T1 T2 T3 T4 Prev. Address |
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