memory products - Al Kossow's Bitsavers

M K4505M/4505S(N)-25/33/50FIGURE 9. ALMOST FULL, HALF FULL FLAG TIMING (4505M/S)----«LAST WRITEBEFORE HF OR AFVALID >-------l(_-"VALID ~DATA IN~::~ IAF, HF"', ,~.".J-,---tsRE 2(SLA:-.-E)--------------II ~a(1}IFIRST READ SINCEHFORAFHOLD PREVIOUS at. Q outputs in Master/Slave Width Expansion (RE2 = EF), or when usingMK4505S Slave separately._2. Q outputs in Master-to-Master Depth Expansion (REt with EF = HIGH),or when using the MK4505M separately.FIRST READ SINCE!iF OR AFFlag Interpretation KeyVALID WRITECURRENTCYCLESFLAG STATE REMAININGMIN MAXAE1 1016 10240 0 1015HF1 0 5120 513 1024AF1 0 80 9 1024VALID READCYCLESREMAININGMINMAX0 89 1024512 10240 5111016 10240 1015NOTEThe table describes the number of valid cycles that can be performed, includingthe next rising edge of the clock. ---8116448