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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
F
OSCEXT
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
T
RSCLK
Rise Time of SCLK 1 – 20 ns
T
FSCLK
Fall Time of SCLK 1 – 20 ns
T
SSCLK
Data Set up Time to Falling Edge of SCLK 40 – – ns
T
HSCLK
Data Hold Time from Falling Edge of SCLK 40 – – ns
F
SCLK
Frequency of SCLK 0 – 8 MHz
T
ERASEB
Flash Erase Time (Block) – – 18 ms
T
WRITE
Flash Block Write Time – – 25 ms
T
DSCLK
Data Out Delay from Falling Edge of SCLK 3.6 < Vdd – – 60 ns
T
DSCLK3
Data Out Delay from Falling Edge of SCLK 3.0 ≤ Vdd ≤ 3.6 – – 85 ns
T
DSCLK2
Data Out Delay from Falling Edge of SCLK 1.71 ≤ Vdd ≤ 3.0 – – 130 ns
SCLK (P1[1])
T
RSCLK
T
FSCLK
SDATA (P1[0])
T
SSCLK
T
HSCLK
T
DSCLK
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