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15-31
INTERFACING WITH EXTERNAL MEMORY
Figure 15-21. 16-bit System with RAM
15.6 SYSTEM BUS AC TIMING SPECIFICATIONS
Refer to the latest datasheet for the AC timings to make sure your system meets specifications.
The major external bus timing specifications are shown in Figure 15-22.
AD7:0
AD15:8
WRL#
ADV#
74AC
373
74AC
373
A12:7 A12:7
D15:8
D7:0
A6:0 A6:0
CS# CS#
WE# WE#
8XC196
8K×8
RAM
(High)
8K×8
RAM
(Low)
WRH#
BUSWIDTH
V
CC
A3097-01
A7:1
A13:8
LE
LE