MSC23B236A Просмотр технического описания (PDF) - Oki Electric Industry
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MSC23B236A Datasheet PDF : 8 Pages
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MSC23B236A-xxBS8/DS8
¡ Semiconductor
Notes:
1. A start-up delay of 200 µs is required after power-up followed by a minimum of
eight initialization cycles (RAS-only refresh or CAS before RAS refresh) before
proper device operation is achieved.
When using the internal refresh counter, a minimum of eight CAS before RAS
initialization cycles is required.
2. AC mesurement assume tT = 5 ns.
3. VIH (Min.) and VIL (Max.) are reference levels for measuring input timing signals.
Transition times are measured between VIH and VIL.
4. Measured with a load circuit equivalent to 2 TTL loads and 100 pF.
5. Operation within the tRCD (Max.) limit ensures that tRAC (Max.) can be met. tRCD
(Max.) is specified as a reference point only. If tRCD is greater than the specified tRCD
(Max.) limit, access time is controlled by tCAC.
6. Operation within the tRAD (Max.) limit ensures that tRAC (Max.) can be met. tRAD
(Max.) is specified as a reference point only. If tRAD is greater than the specified tRAD
(Max.) limit, access time is controlled by tAA.
7. tOFF (Max.) defines the time at which the output achieves an open circuit condition
and is not referenced to output voltage levels.
8. tRCH or tRRH must be satisfied for a read cycle.
See ADDENDUM B for AC Timing Waveforms
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