AS7C251MNTF32A/36A
®
Key to switching waveforms
don’t care
Undefined
Rising input
Falling input
Timing waveform of read cycle
tCH tCL
tCYC
CLK
tCENH
tCENS
CEN
tAS
tAH
A1
A2
A3
Address
R/W
tWS tWH
tCSS tCSH
CE0,CE2
CE1
tADVS
tADVH
ADV/LD
OE
tHZOE
tOE
tLZOE
Q(A2Y‘11)
STALL
Q(A3)
Q(A1)
Q(A2)
Dout
Q(A3Y‘01)
Q(A2Y‘01) Q(A2Y‘10)
BURST
BURST
READ
Q(A2Ý01)
READ
Q(A1)
DSEL
READ
Q(A2)
READ BURST
BURST
Command
READ
Q(A2Ý11)
Q(A3)
READ
Q(A3Ý01)
READ
Q(A2Ý10)
12/23/04, v 1.1
Alliance Semiconductor
P. 10 of 18