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M27V160-150XB6TR Datasheet(PDF) 8 Page - STMicroelectronics |
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M27V160-150XB6TR Datasheet(HTML) 8 Page - STMicroelectronics |
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8 / 15 page  M27V160 8/15 Table 9. Programming Mode DC Characteristics (1) (TA =25 °C; VCC = 6.25V ± 0.25V; VPP = 12.5V ± 0.25V) Note: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP. Table 10. Programming Mode AC Characteristics (1) (TA =25 °C; VCC = 6.25V ± 0.25V; VPP = 12.5V ± 0.25V) Note: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP. 2. Sampled only, not 100% tested. Symbol Parameter Test Conditio n Min Max Unit ILI Input Leakage Current 0 ≤ VIN ≤ VCC ±1 µA ICC Supply Current 50 mA IPP Program Current E= VIL 50 mA VIL Input Low Voltage –0.3 0.8 V VIH Input High Voltage 2.4 VCC + 0.5 V VOL Output Low Voltage IOL = 2.1mA 0.4 V VOH Output High Voltage TTL IOH = –2.5mA 3.6 V VID A9 Voltage 11.5 12.5 V Symbol Alt Parameter Test Condi tion Min Max Unit tAVEL tAS Address Valid to Chip Enable Low 2 µs tQVEL tDS Input Valid to Chip Enable Low 2 µs tVPHAV tVPS VPP High to Address Valid 2 µs tVCHAV tVCS VCC High to Address Valid 2 µs tELEH tPW Chip Enable Program Pulse Width 45 55 µs tEHQX tDH Chip Enable High to Input Transition 2 µs tQXGL tOES Input Transition to Output Enable Low 2 µs tGLQV tOE Output Enable Low to Output Valid 120 ns tGHQZ (2) tDFP Output Enable High to Output Hi-Z 0 130 ns tGHAX tAH Output Enable High to Address Transition 0ns Programming The M27V160 has been designed to be fully com- patible with the M27C160. As a result the M27V160 can be programmed as the M27C160 on the same programming equipments applying 12.75V on VPP and 6.25V on VCC by the use of the same PRESTO III algorithm. When delivered (and after each erasure for UV EPROM), all bits of the M27V160 are in the ’1’ state. Data is introduced by selectively programming ’0’s to the desired bit lo- cations. Although 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 expo- sure to ultraviolet light (UV EPROM). The M27V160 is in the programming mode when Vpp input is at 12.5V, G is at VIH and E is pulsed to VIL. The data to be programmed is applied to 16 bits in parallel to the data output pins. The levels required for the address and data inputs are TTL. VCC is specified to be 6.25V ± 0.25V. |
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