CY8C20x36/46/66, CY8C20396
Document Number: 001-12696 Rev. *D Page 24 of 34
AC External Clock Specifications
The following table lists guaranteed maximum and minimum specifications for the entire voltage and temperature ranges.
AC Programming Specifications
Figure 12. AC Waveform
The following table lists the guaranteed maximum and minimum specifications for the entire voltage and temperature ranges.
Table 29. AC External Clock Specifications
Symbol Description Conditions Min Typ Max Units
FOSCEXT Frequency 0.750 –25.2MHz
– High Period 20.6 –5300 ns
– Low Period 20.6 ––ns
– Power Up IMO to Switch 150 – – μs
Table 30. AC Programming Specifications
Symbol Description Conditions Min Typ Max Units
TRSCLK Rise Time of SCLK 1 – 20 ns
TFSCLK Fall Time of SCLK 1 – 20 ns
TSSCLK Data Set up Time to Falling Edge of SCLK 40 – – ns
THSCLK Data Hold Time from Falling Edge of SCLK 40 – – ns
FSCLK Frequency of SCLK 0 – 8 MHz
TERASEB Flash Erase Time (Block) – – 18 ms
TWRITE Flash Block Write Time – – 25 ms
TDSCLK Data Out Delay from Falling Edge of SCLK 3.6 < Vdd – – 60 ns
TDSCLK3 Data Out Delay from Falling Edge of SCLK 3.0 ≤ Vdd ≤ 3.6 – – 85 ns
TDSCLK2 Data Out Delay from Falling Edge of SCLK 1.71 ≤ Vdd ≤ 3.0 – – 130 ns
SCLK (P1[1])
TRSCLK TFSCLK
SDATA (P1[0])
TSSCLK THSCLK TDSCLK
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