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P1757M-35PGM Datasheet(PDF) 9 Page - Pyramid Semiconductor Corporation |
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P1757M-35PGM Datasheet(HTML) 9 Page - Pyramid Semiconductor Corporation |
9 / 34 page PACE 1757 M/ME Page 9 of 34 Document # MICRO-10 REV B SIGNAL PROPAGATION DELAYS (cont'd) Symbol Description MIN MAX MIN MAX MIN MAX MIN MAX TD/I(EXT ADR) V MMU Cache Hit 25 23 23 23 TSTRBD(EXT ADR ER) External Address Error 25 20 18 16 TIBD V(EDC GEN)V Error Correction Write Cycle 30 25 24 23 TC(GNT) Arbiter Priority Transition 35 25 22 18 TC(RDYA) Address Ready 30 25 21 17 TIBDIN(MEM PAR ER) Parity Mode 34 30 28 25 TC(MEM PRT ER) Memory Protect Error 50 45 43 40 T STRBD (WR PROT) Write Protect Cache Hit 25 20 18 16 TC(WR PROT)I Write Protect Cache Miss 25 22 20 18 TD/I(PROT FLAG) Cache Hit (BPU Protection Error) 40 45 42 40 TD/I(PROT FLAG) Cache Hit (MMU Key-Lock Error) 40 35 33 30 TC(PROT FLAG) Cache Hit (BPU Protection Error) 25 35 33 30 TC(PROT FLAG) Cache Hit (MMU Key-Lock Error) 25 20 20 20 TC(EXT ADR) V Clock to EXT Address Valid (Miss) 32 30 27 23 TFC(IB OUT) V Clock to EXT Address Valid (Miss) 30 25 25 25 T EX RDY1(RDYD) Ready Data 28 24 23 21 T EX RDY(RDYD) Ready Data 16 13 12.5 11.5 TC (RDYD) V Ready Data 28 22 19 16 TSTRBAh(A) V Address Valid 29 21 20 19 TIBA V(A )V Address Valid 31 22 21 20 TFC (R) L Read Strobes 24 18 15 12 TSTRBD H(R)H Read Strobes 24 18 15 12 TSTRBD H(W)L Write Strobes 262018 15 TSTRBD L(W)H Write Strobes 262018 15 TSTRBD(STRTROM) Start-Up ROM 26 20 18 15 TC(TIM CLK) Timer Clock 30 25 23 20 TEXT AD(FC B3) Extended Address Set-Up 10 10 10 10 TF(F), TI(I) Edge Sensitive Pulse Width 5555 tr, tf Clock Rise and Fall Time 5 5 5 5 20 MHz 30 MHz 35 MHz 40 MHz Note All timing parameters are composed of Three elements. The first "T" stands for timing. The second represents the "from" signal. The third in parentheses indicates "to" signal. When the CPU clock is one of the signal elements, either the rising edge "E" or the falling edge "FC" is referenced. When other elements are used, an additional suffix indicates the final logic level of the signal. "L" - low level, "H" - high level, "V" - valid, "Z" - high impedance, "X" - don't care, "LH" - low to high, "ZH" - high impedance to high, "R" - read cycle, and "W" - write cycle. Units = ns |
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