R
A3024
Battery or Supercap Connection
Note : The diodes must have a
forward voltage drop of less than
0.3 V. BAT 85 s are recommended.
VDD
Power fail
(low for standby)
PF VDD
A3024
+
or
+
Battery
Supercap
VSS
VSS
Fig. 11
Typical Applications
A 3024 Interfaced with Intel CPU (RD and WR pulse)
Address
Latch
A/D Bus 0 - 7
Address Bus 0 - 7
A0
Address Bus A8 - A15
Decoder
CPU
to other
peripherals
and
memory
WR
RD
CS RD WR
D 0-7
A/D
A3024
Fig. 12
A 3024 Interfaced with Motorola CPU (DS or RD pin tied to CS, and R/W)
Data Bus
Address Bus
CPU
to other
peripherals
and
A0
Decoder
memory
R/W
DS
AD 0-7
RD CS
A/D WR
A3024
Fig. 13
14