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M27W201-150N6TR Datasheet(PDF) 7 Page - STMicroelectronics |
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M27W201-150N6TR Datasheet(HTML) 7 Page - STMicroelectronics |
7 / 16 page 7/16 M27W201 Table 9. Programming Mode DC Characteristics (1) (TA =25°C; VCC = 6.25V ± 0.25V; VPP = 12.75V ± 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 = 12.75V ± 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 Condition Min Max Unit ILI Input Leakage Current 0 ≤ VIN ≤ VCC ±10 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 VCC +0.5 V VOL Output Low Voltage IOL = 2.1mA 0.4 V VOH Output High Voltage TTL IOH = –400µA 2.4 V VID A9 Voltage 11.5 12.5 V Symbol Alt Parameter Test Condition Min Max Unit tAVPL tAS Address Valid to Program Low 2 µs tQVPL tDS Input Valid to Program Low 2 µs tVPHPL tVPS VPP High to Program Low 2µs tVCHPL tVCS VCC High to Program Low 2µs tELPL tCES Chip Enable Low to Program Low 2 µs tPLPH tPW Program Pulse Width 95 105 µs tPHQX tDH Program High to Input Transition 2 µs tQXGL tOES Input Transition to Output Enable Low 2 µs tGLQV tOE Output Enable Low to Output Valid 100 ns tGHQZ (2) tDFP Output Enable High to Output Hi-Z 0 130 ns tGHAX tAH Output Enable High to Address Transition 0ns ming '0's into the desired bit locations. 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 exposure to ultraviolet light (UV EPROM). The M27W201 is in the pro- gramming mode when VPP input is at 12.75V, E is at VIL and P is pulsedtoVIL. The datatobepro- grammed is applied to 8 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. Programming The M27W201 has been designed to be fully com- patible with the M27C2001 and has the same elec- tronic signature. As a result the M27W201 can be programmed as the M27C2001 on the same pro- gramming equipment applying 12.75V on VPP and 6.25V on VCC by the use of the same PRESTO II algorithm. When delivered (and after each ‘1’s erasure for UV EPROM), all bits of the M27W201 are in the '1' state.Data is introduced by selectively program- |
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