CY8C21x34 Final Data Sheet
3. Electrical Specifications
3.4.2
AC General Purpose IO 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, 3.0V to 3.6V and -40°C ≤ TA ≤ 85°C, or 2.4V to 3.0V and -40°C ≤ TA ≤ 85°C, respectively. Typical parameters
apply to 5V, 3.3V, or 2.7V at 25°C and are for design guidance only.
Table 3-17. 5V and 3.3V AC GPIO Specifications
Symbol
Description
GPIO Operating Frequency
Min
Typ
Max
Units
MHz
Notes
Normal Strong Mode
F
0
3
2
7
7
–
12
18
18
–
GPIO
TRiseF
TFallF
TRiseS
TFallS
Rise Time, Normal Strong Mode, Cload = 50 pF
Fall Time, Normal Strong Mode, Cload = 50 pF
Rise Time, Slow Strong Mode, Cload = 50 pF
Fall Time, Slow Strong Mode, Cload = 50 pF
–
ns
ns
ns
ns
Vdd = 4.5 to 5.25V, 10% - 90%
Vdd = 4.5 to 5.25V, 10% - 90%
Vdd = 3 to 5.25V, 10% - 90%
Vdd = 3 to 5.25V, 10% - 90%
–
27
22
–
Table 3-18. 2.7V AC GPIO Specifications
Symbol
Description
GPIO Operating Frequency
Min
Typ
Max
Units
Notes
Normal Strong Mode
F
0
–
3
MHz
ns
GPIO
TRiseF
TFallF
TRiseS
TFallS
Rise Time, Normal Strong Mode, Cload = 50 pF
Fall Time, Normal Strong Mode, Cload = 50 pF
Rise Time, Slow Strong Mode, Cload = 50 pF
Fall Time, Slow Strong Mode, Cload = 50 pF
6
–
50
50
Vdd = 2.4 to 3.0V, 10% - 90%
Vdd = 2.4 to 3.0V, 10% - 90%
Vdd = 2.4 to 3.0V, 10% - 90%
Vdd = 2.4 to 3.0V, 10% - 90%
6
–
ns
18
18
40
40
120
120
ns
ns
Figure 3-5. GPIO Timing Diagram
90%
GPIO
Pin
Output
Voltage
10%
TRiseF
TRiseS
TFallF
TFallS
January 12, 2007
Document No. 38-12025 Rev. *K
26
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