RCA COSMAC Operator's Manual page 108

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APPENDIX D -(OSMAc TIMING,. SuMMARY
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t1fMORY
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M Al.<.E'SS PERIOD
AOORess (MAO-'7)
NOTE 1.
NOTE 2.
NOTE 3.
NOTE:
MINIMUM T DETERMINED BY COSMAC V DD (MAX.VDD=lSVDC). NO MAXIMUM T.
MEMORY WRITE PULSE WIDTH (MWR) = 1.ST.
MEMORY ACCESS TIME
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3.ST - ALU TIME (SEE DATA SHEET).
SHADING INDICATES "DON'T CARE" OR INTERNAL DELAYS DEPENDING ON
VDD AND THE CLOCK SPEED.