AS7C33512NTF18A
®
Key to switching waveforms
Rising input
Falling input
Undefined/don’t care
Timing waveform of read/write cycle
t
CH
CLK
t
CENS
t
CENH
CEN
t
CL
t
CYC
CE1
t
CSS
t
CSH
CE0, CE2
t
ADVS
t
ADVH
ADV/LD
t
WS
t
WH
R/W
t
WS
t
WH
BWn
t
AS
t
AH
ADDRESS
A1
A2
A3
A4
A5
A6
A7
OE
t
DS
t
DH
D/Q
D(A1)
D(A2)
t
LZC
D(A2Ý01)
t
OH
Q(A3)
Q(A4)
t
HZOE
Q(A4Ý01)
t
OE
t
HZC
D(A5)
Q(A6)
Q(A7)
t
CD
t
LZOE
Command
WRITE
D(A1)
WRITE
D(A2)
BURST
WRITE
D(A2Ý01)
READ
Q(A3)
READ
Q(A4)
BURST
READ
Q(A4Ý01)
WRITE
D(A5)
READ
Q(A6)
WRITE
D(A7)
DSEL
Note: Ý = XOR when LBO = high/no connect; Ý = ADD when LBO = low. BW[a:d] is don’t care.
7/12/04, v. 1.0
Alliance Semiconductor
P. 9 of 14