V53C8258H
MOSEL VITELIC
Notes:
1. ICC is dependent on output loading when the device output is selected. Specified ICC (max.) is measured with the
output open.
2.
I
CC is dependent upon the number of address transitions. Specified ICC (max.) is measured with a maximum of two
transitions per address cycle in EDO Page Mode.
3. Specified VIL (min.) is steady state operating. During transitions, VIL (min.) may undershoot to –1.0 V for a period not
to exceed 20 ns. All AC parameters are measured with VIL (min.) ≥ VSS and VIH (max.) ≤ VCC
.
4. tRCD (max.) is specified for reference only. Operation within tRCD (max.) limits insures that tRAC (max.) and tCAA (max.)
can be met. If tRCD is greater than the specified tRCD (max.), the access time is controlled by tCAA and tCAC
.
5. Either tRRH or tRCH must be satisified for a Read Cycle to occur.
6. Measured with a load equivalent to one TTL input and 50 pF.
7. Access time is determined by the longest of tCAA, tCAC and tCAP
.
8. AssumesthattRAD ≤ tRAD (max.). IftRAD isgreaterthantRAD (max.), tRAC willincreasebytheamountthattRAD exceeds
t
RAD (max.).
9. AssumesthattRCD≤ tRCD (max.).IftRCD isgreaterthantRCD (max.),tRAC willincreasebytheamountthattRCD exceeds
t
RCD (max.).
10. Assumes that tRAD ≥ tRAD (max.).
11. OperationwithinthetRAD(max.)limitensuresthattRAC (max.)canbemet. tRAD (max.)isspecifiedasareferencepoint
only. If tRAD is greater than the specified tRAD (max.) limit, the access time is controlled by tCAA and tCAC
.
12. tWCS, tRWD, tAWD and tCWD are not restrictive operating parameters.
13. tWCS (min.) must be satisfied in an Early Write Cycle.
14. tDS and tDH are referenced to the latter occurrence of CAS or WE.
15. tT is measured between VIH (min.) and VIL (max.). AC-measurements assume tT = 3 ns .
16. Assumes a three-state test load (5 pF and a 380 Ohm Thevenin equivalent).
17. An initial 200 µs pause and 8 RAS-containing cycles are required when exiting an extended period of bias without
clocks. An extended period of time without clocks is defined as one that exceeds the specified Refresh Interval.
V53C8258H Rev. 1.4 February 1997
8
MOSEL [ MOSEL VITELIC, CORP ]
