Cypress CY7C6431x User Manual
CY7C6431x
CY7C64345, CY7C6435x
Document Number: 001-12394 Rev *G
Page 20 of 28
AC General Purpose I/O Specifications
Figure 6. GPIO Timing Diagram
AC External Clock Specifications
Table 17. AC GPIO Specifications
Symbol
Description
Conditions
Min
Typ
Max
Units
F
GPIO
GPIO Operating Frequency
Normal Strong Mode, Ports 0, 1
0
–
12
MHz
TRise23
Rise Time, Strong Mode
Ports 2, 3
Ports 2, 3
Vdd = 3.3 to 5.5V, 10% - 90%
15
–
80
ns
TRise01
Rise Time, Strong Mode
Ports 0, 1
Ports 0, 1
Vdd = 3.3 to 5.5V, 10% - 90%
10
–
50
ns
TFall
Fall Time, Strong Mode
All Ports
All Ports
Vdd = 3.3 to 5.5V, 10% - 90%
10
–
50
ns
TFall
TRise23
TRise01
TRise01
90%
10%
GPIO
Pin
Output
Voltage
Table 18. AC External Clock Specifications
Symbol
Description
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