Cypress CY7C67300 manual AC Timing Characteristics, Reset Timing, Clock Timing

CY7C67300

AC Timing Characteristics

Reset Timing

tRESET

nRESET

nRD or nWRL or nWRH

tIOACT

Reset Timing

Table 135. Reset Timing Parameters

Parameter	Description	Min	Typical	Max	Unit
tRESET	nRESET Pulse Width	16			clocks[11]
tIOACT	nRESET HIGH to nRD or nWRx active	200			µs

Clock Timing

tCLK

XTALIN

tHIGH

tLOW

tFALL

tRISE

Clock Timing

Table 136. Clock Timing Parameters

Parameter	Description	Min	Typical	Max	Unit
fCLK	Clock Frequency		12.0		MHz
vXINH[12]	Clock Input High	1.5	3.0	3.6	V
	(XTALOUT left floating)
tCLK	Clock Period	83.17	83.33	83.5	ns
tHIGH	Clock High Time	36		44	ns
tLOW	Clock Low Time	36		44	ns
tRISE	Clock Rise Time			5.0	ns
tFALL	Clock Fall Time			5.0	ns
Duty Cycle		45		55	%

Notes

11.Clock is 12 MHz nominal.

12.vXINH is required to be 3.0 V to obtain an internal 50/50 duty cycle clock.

Document #: 38-08015 Rev. *J Page 85 of 99

[+] Feedback