Cypress CY8C20x46 Manual De Usuario

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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
25.2
MHz
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