Microcontroller User's Guide

REAL TIME CLOCK
(OPTION)
32K X 8 SRAMDS5000FP
DS5000(T), DS2250(T)
40–PINS
(8)
(8)
(8)
(8)
V
CC
PORT0
PORT1
PORT2
PORT3
ALE
PSEN
EA
RST
XTAL1
XTAL2
GND
V
CCO
ADDR
DATA
CE1
CE2
VLI
+3V
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50
MEMORY INTERCONNECT OF THE DS5000FP Figure 5–1
13
54
+3v
+5v
12
10
74
28
27
20
22
14
73
78
+5v
52
DS5000FP
V
CC
WE
CS
A14–A0
D7–D0
GND
OE
32K x 8 SRAM
V
CCO
R/W
CE1
BA14–BA0
BD7–BD0
EA
CE2
V
CC
V
LI
PORT0
PORT1
PORT2
PORT3
GND
DS5000 SERIES MODULE BLOCK DIAGRAM Figure 5–2