4.5 Programming waveforms
Note: 
      
  - The input timing reference is 0.8V for VIL and 2.0V for VIH.
 - tOE and tDFP are characteristics of the device, but must be accommodated by the programmer.
 - When programming the AT27C512R, a 0.1 µF capacitor is required across VPP and ground to suppress spurious voltage transients.
 
