CG64xxAM Preliminary Data Sheet
3. Electrical Specifications
3.4.5
AC External Clock Specifications
The following tables list guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V
and -40°C ≤ TA ≤ 85°C. Typical parameters apply to 5V at 25°C and are for design guidance only.
Table 3-13. AC External Clock Specifications
Symbol
Description
Min
0.093
Typ
Max
24.6
Units
MHz
Notes
FOSCEXT
Frequency
–
–
–
–
High Period
Low Period
20.6
20.6
150
–
–
–
5300
ns
ns
µs
–
–
Power Up IMO to Switch
3.4.6
AC Programming Specifications
The following table lists guaranteed maximum and minimum specifications for the voltage and temperature ranges: 4.75V to 5.25V
and -40°C ≤ TA ≤ 85°C. Typical parameters apply to 5V at 25°C and are for design guidance only.
Table 3-14. AC Programming Specifications
Symbol
Description
Min
Typ
Max
Units
ns
Notes
TRSCLK
Rise Time of SCLK
Fall Time of SCLK
1
–
20
20
–
TFSCLK
TSSCLK
THSCLK
FSCLK
1
–
ns
Data Set up Time to Falling Edge of SCLK
Data Hold Time from Falling Edge of SCLK
Frequency of SCLK
40
40
0
–
ns
–
–
ns
–
8
MHz
ms
ms
ns
TERASEB Flash Erase Time (Block)
TWRITE Flash Block Write Time
–
15
30
–
–
–
–
TDSCLK5 Data Out Delay from Falling Edge of SCLK
–
50
May 24, 2005
Document No. 001-00353 Rev. **
20
CYPRESS [ CYPRESS ]
