Cypress CY7C67300 Computer Hardware User Manual


 
CY7C67300
Document #: 38-08015 Rev. *J Page 86 of 99
SRAM Read Cycle
[15]
Notes
13.0 wait state cycle.
14.t
AC
External SRAM access time = 12 ns for zero and one wait states. The External SRAM access time = 12 ns + (n – 1)*T for wait states = n, n > 1, T = 48 MHz
clock period.
15.Read timing is applicable for nXMEMSEL, nXRAMSEL, and nXROMSEL.
Table 137. SRAM Read Cycle Parameters
Parameter Description Min Typical Max Unit
t
CR
CS LOW to RD LOW 1 ns
t
RDH
RD HIGH to Data Hold 0 ns
t
CDH
CS HIGH to Data Hold 0 ns
t
RPW
[13]
RD LOW Time 38 45 ns
t
AR
RD LOW to Address Valid 0 ns
t
AC
[14]
RAM Access to Data Valid 12 ns
Address
CS
RD
Din
t
AR
t
RPW
Data Valid
t
CR
t
AC
t
RDH
t
CDH
[+] Feedback