
R
XC4000E and XC4000X Series Field Programmable Gate Arrays
6-14
May 14, 1999 (Version 1.6)
G'
4
G1 G4
F1 F4
C1 C4
WRITE
DECODER
1 of 16
DIN
16-LATCH
ARRAY
X6752
4
MUX
F'
WRITE
DECODER
1 of 16
DIN
16-LATCH
ARRAY
READ
ADDRESS
READ
ADDRESS
WRITE PULSE
LATCH
ENABLE
LATCH
ENABLE
K
(CLOCK)
WE
D1
D0
EC
WRITE PULSE
MUX
4
Figure 4:
16x2 (or 16x1) Edge-Triggered Single-Port RAM
G'
4
G1 G4
F1 F4
C1 C4
WRITE
DECODER
1 of 16
DIN
16-LATCH
ARRAY
X6754
4
MUX
F'
WRITE
DECODER
1 of 16
DIN
16-LATCH
ARRAY
READ
ADDRESS
READ
ADDRESS
WRITE PULSE
LATCH
ENABLE
LATCH
ENABLE
K
(CLOCK)
WE
D1/A4
D0
EC
WRITE PULSE
MUX
4
H'
Figure 5: 32x1 Edge-Triggered Single-Port RAM (F and G addresses are identical)
Product Obsolete or Under Obsolescence