B Appendix: Timing Parameters

The following table lists the timing parameters used in this document.

Table B-1. Timing Parameters
ParameterDescription
tXPRExit reset from CKE HIGH to a valid command
tINIT1Minimum CKE LOW time after completion of voltage ramp
tINIT3Minimum idle time after the first CKE assertion
tINIT5Maximum duration of device auto initialization
tZQINITZQ initial calibration
tRPPRECHARGE command period
tRFCREFRESH-to-ACTIVATE or REFRESH command period