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M27V201-150XN6TR Arkusz danych(PDF) 6 Page - STMicroelectronics |
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M27V201-150XN6TR Arkusz danych(HTML) 6 Page - STMicroelectronics |
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6 / 15 page  M27V201 6/15 Figure 5. Read Mode AC Waveforms AI00719B tAXQX tEHQZ A0-A17 E G Q0-Q7 tAVQV tGHQZ tGLQV tELQV VALID Hi-Z VALID Table 8B. Read Mode AC Characteristics (1) (TA = 0 to 70°C or –40 to 85 °C; VCC = 3.3V ± 10%; VPP = Vcc) Note: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP. 2. Sampled only, not 100% tested. Symbol Alt Parameter Test Conditi on M27V201 Unit -180 -200 Min Max Min Max tAVQV tACC Address Valid to Output Valid E= VIL,G= VIL 180 200 ns tELQV tCE Chip Enable Low to Output Valid G= VIL 180 200 ns tGLQV tOE Output Enable Low to Output Valid E = VIL 80 90 ns tEHQZ (2) tDF Chip Enable High to Output Hi-Z G= VIL 0 50 0 70 ns tGHQZ (2) tDF Output Enable High to Output Hi-Z E= VIL 0 50 0 70 ns tAXQX tOH Address Transition to Output Transition E= VIL,G= VIL 00 ns Programming The M27V201 has been designed to be fully com- patible with the M27C2001 and has the same elec- tronic signature. As a result the M27V201 can be programmed as the M27C2001 on the same pro- gramming equipments by applying 12.75V on VPP and 6.25V on VCC by the use of the same PRES- TO II algorithm. When delivered (and after each erasure for UV EPROM), all bits of the M27V201 are in the ’1’ state.Data is introduced by selectively programming ’0’s into the desired bit locations. Al- though only ’0’s will be programmed, both ’1’s and ’0’s can be present in the data word. The only way to change a ’0’ to a ’1’ is by die exposition to ultra- violet light (UV EPROM). The M27V201 is in the programming mode when VPP input is at 12.75V, Eis at VIL and P is pulsed to VIL. The data to be programmed is applied to 8 bits in parallel to the data output pins. The levels required for the ad- dress and data inputs are TTL. VCC is specified to be 6.25V ±0.25V. |
Podobny numer części - M27V201-150XN6TR |
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Podobny opis - M27V201-150XN6TR |
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