![](http://pdfasset.owneriq.net/e/33/e33515e3-16b4-436f-839a-25177a01250d/e33515e3-16b4-436f-839a-25177a01250d-bgeb.png)
13-27
EXTERNAL MEMORY INTERFACE
Figure 13-25. Bus Diagram for Example 5: 80C251SB in Nonpage Mode
A4145-01
A7:0
Latch
A15:8
A/D7:0
EPROM
(64 Kbytes)
OE#
CE#
A15:8
A7:0
D7:0
PSEN#
80C251SB
RD#
WR#
EA#
P2
P0
D7:0
A15:8
A7:0
RAM
(64 Kbytes)
CE#
OE#
WE#
Data
Code