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M27C801 데이터시트(PDF) 18 Page - STMicroelectronics |
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M27C801 데이터시트(HTML) 18 Page - STMicroelectronics |
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18 / 24 page ![]() DC and AC characteristics M27C801 18/24 Figure 9. Programming and verify modes AC waveforms Table 11. Programming mode AC characteristics (1) Symbol Alt Parameter Test condition Min. Max. Unit tAVEL tAS Address valid to Chip Enable low 2 µs tQVEL tDS Input valid to Chip Enable low 2 µs tVCHEL tVCS VCC high to Chip Enable low 2 µs tVPHEL tOES VPP high to Chip Enable low 2 µs tVPLVPH tPRT VPP rise time 50 ns tELEH tPW Chip Enable program pulse width (initial) 45 55 µs tEHQX tDH Chip Enable high to Input transition 2 µs tEHVPX tOEH Chip Enable high to VPP transition 2 µs tVPLEL tVR VPP low to Chip Enable low 2 µs tELQV tDV Chip Enable low to output valid 1 µs tEHQZ (2) tDFP Chip Enable high to output Hi-Z 0 130 ns tEHAX tAH Chip Enable high to address transition 0 ns 1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP. 2. Sampled only, not 100% tested. tAVEL VALID AI01270 A0-A19 Q0-Q7 VCC DATA IN DATA OUT E tQVEL tVCHEL tVPHEL tEHQX tEHVPX tELQV tELEH tEHQZ tVPLEL PROGRAM VERIFY GVPP tEHAX |
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