Cypress CY7C6435x manual AC General Purpose I/O Specifications, AC External Clock Specifications

CY7C6431x

CY7C64345, CY7C6435x

AC General Purpose I/O Specifications

Table 17 lists guaranteed maximum and minimum specifications for the entire voltage and temperature ranges.

Table 17. AC GPIO Specifications

Symbol	Description	Conditions		Min	Typ	Max	Units
FGPIO	GPIO Operating Frequency	Normal Strong Mode, Ports 0, 1		0	–	12	MHz
TRise23	Rise Time, Strong Mode	Vdd = 3.3 to 5.5V, 10%	- 90%	15	–	80	ns
	Ports 2, 3
TRise01	Rise Time, Strong Mode	Vdd = 3.3 to 5.5V, 10%	- 90%	10	–	50	ns
	Ports 0, 1
TFall	Fall Time, Strong Mode	Vdd = 3.3 to 5.5V, 10%	- 90%	10	–	50	ns
	All Ports

Figure 6. GPIO Timing Diagram

90%
GPIO
Pin
Output
Voltage
10%
TRise23	TFall
TRise01

AC External Clock Specifications

Table 18 lists guaranteed maximum and minimum specifications for the entire voltage and temperature ranges.

Table 18. AC External Clock Specifications

Symbol	Description	Min	Typ	Max	Units
FOSCEXT	Frequency	0.750	–	25.2	MHz
–	High Period	20.6	–	5300	ns
–	Low Period	20.6	–	–	ns
–	Power Up IMO to Switch	150	–	–	μs

Document Number: 001-12394 Rev *G Page 20 of 28

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