Avago Technologies LSI8751D - Manual (Page 303)

External Memory Interface Diagram Examples B-3
Figure B.3 256 Kbyte Interface with 150 ns Memory
LSI53C875
27C020-15/
MOE/
OE
MCE/
CE
8
MAD[7:0]
Bus
8
A[7:0]
8
A[15:8]
8
MAS0/
MAS1/
8
Note: MAD bus sense logic enabled for 256 Kbytes of fast memory (150 ns device @ 33 MHz). The HCT374s
may be replaced with HCT377s.
GPIO4
MWE/
V
PP
Control
+ 12 V
V
PP
WE
Optional - for Flash Memory only, not
required for EEPROMS.
28F020-15/
Socket
D[7:0]
2
2
A[17:16]
V
SS
MAD2 4.7 K
MAD1 4.7 K
D0
D7
Q0
Q7
HCT374
CK 0E
D0
D7
Q0
Q7
HCT374
CK 0E
D0
D1
Q0
Q1
HCT377
CK 0E
MAD[1:0] Bus