
GS81302D08/09/18/36E-375/350/333/300/250
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.04b 12/2011 19/34 © 2011, GSI Technology
AC Electrical Characteristics
Parameter Symbol -375 -350 -333 -300 -250 Units Notes
Min Max Min Max Min Max Min Max Min Max
Clock
K, K Clock Cycle Time
C, C Clock Cycle Time tKHKH
tCHCH 2.66 8.4 2.86 8.4 3.0 8.4 3.3 8.4 4.0 8.4 ns
tKC Variable tKCVar —0.2 —0.2 —0.2 —0.2 —0.2 ns 6
K, K Clock High Pulse Width
C, C Clock High Pulse Width tKHKL
tCHCL 1.06 —1.14 —1.2 —1.32 —1.6 —ns
K, K Clock Low Pulse Width
C, C Clock Low Pulse Width tKLKH
tCLCH 1.06 —1.14 —1.2 —1.32 —1.6 —ns
K to K High
C to C High tKHKH
tCHCH 1.13 —1.23 —1.35 —1.49 —1.8 —ns
K to K High
C to C High tKHKH
tCHCH 1.13 —1.23 —1.35 —1.49 —1.8 —ns
K, K Clock High to C, C Clock High tKHCH 01.21 01.29 01.35 01.49 01.8 ns
DLL Lock Time tKCLock 1024 —1024 —1024 —1024 —1024 —cycle 7
K Static to DLL reset tKCReset 30 —30 —30 —30 —30 —ns
Output Times
K, K Clock High to Data Output V alid
C, C Clock High to Data Output Valid tKHQV
tCHQV —0.45 —0.45 —0.45 —0.45 —0.45 ns 4
K, K Clock High to Data Output Hold
C, C Clock High to Data Output Hold tKHQX
tCHQX –0.45 —–0.45 —–0.45 —–0.45 —–0.45 —ns 4
K, K Clock High to Echo Clock Valid
C, C Clock High to Echo Clock Valid tKHCQV
tCHCQV —0.45 —0.45 —0.45 —0.45 —0.45 ns
K, K Clock High to Echo Clock Hold
C, C Clock High to Echo Clock Hold tKHCQX
tCHCQX –0.45 —–0.45 —–0.45 —–0.45 —–0.45 —ns
CQ, CQ High Output Valid tCQHQV —0.2 —0.23 —0.25 —0.27 —0.30 ns 8
CQ, CQ High Output Hold tCQHQX –0.2 —–0.23 —–0.25 —–0.27 —–0.30 —ns 8
CQ Phase Distortion tCQHCQH
tCQHCQH 0.9 —1.0 —1.10 —1.24 —1.55 —ns
K Clock High to Data Output High-Z
C Clock High to Data Output High-Z tKHQZ
tCHQZ —0.45 —0.45 —0.45 —0.45 —0.45 ns 4
K Clock High to Data Output Low-Z
C Clock High to Data Output Low-Z tKHQX1
tCHQX1 –0.45 —–0.45 —–0.45 —–0.45 —–0.45 —ns 4
Setup Times
Address Input Setup Time tAVKH 0.4 —0.4 —0.4 —0.4 —0.5 —ns 1
Control Input Setup Ti me (R, W) tIVKH 0.4 —0.4 —0.4 —0.4 —0.5 —ns 2
Control Input Setup Ti me (BWX), (BWX)tIVKH 0.28 —0.28 —0.28 —0.3 —0.35 —ns 3
Data Input Setup Time tDVKH 0.28 —0.28 —0.28 —0.3 —0.35 —ns