SN74ALVC7805 Datasheet, PDF (6/14 Pages) Texas Instruments – 256 × 18 LOW-POWER CLOCKED FIRST-IN, FIRST-OUT MEMORY

SN74ALVC7805
256 × 18
LOW-POWER CLOCKED FIRST-IN, FIRST-OUT MEMORY
SCAS593A – OCTOBER 1997 – REVISED APRIL 1998
1
RESET
0
1
PEN
0
WRTCLK
1
WRTEN1
0
WRTEN2
D0–D1_ÎÎ7 _{ÎÎÎÎ}W_ÎÎ1 _{ÎÎÎÎ}W2_{ÎÎÎÎ}W3_{ÎÎÎÎ}W_ÎÎ4 _{ÎÎÎÎÎÎ}W(X_ÎÎ+2) _{ÎÎÎÎÎÎ}A_{ÎÎÎÎÎÎÎÎ}B_{ÎÎÎÎÎÎÎÎ}C _{ÎÎÎÎ}
RDCLK
1
2
3
1
OE1
0
1
RDEN
0
OE2
1
0
Q0–Q1_É7 _{ÉÉÉÉ}^Inva_É^lid _{ÉÉÉÉÉÉÉÉÉÉÉÉ}^W_ɹ _{ÉÉÉÉÉÉÉÉÉ}
OR
AF/AE
HF
IR
DATA-WORD NUMBER FOR FLAG TRANSITIONS
DEVICE
TRANSITION WORD
A
B
C
SN74ALVC7805 W129 W(257 – Y) W257
Figure 2. FIFO Write
6
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