17
FIGURE 24. STRAIGHT MODE TTL I/O (WHEN A SINGLE POWER SUPPLY IS USED)
Application Circuits (Continued)
12
11
10
9
8
7
6
5
4
3
2
1
25
26
27
28
29
30
31
32
33
34
35
36
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
CLK/E
CLKN/E
CLK/T
NC
DVCC2
DGND2
P2D0
P2D1
P2D2
P2D3
RESETN/E
RESET/E
RESETN/T
SELECT
INV
CLKOUT
DVCC2
DGND2
P1D7
P1D6
P1D5
P1D4
P2
D
4
P2
D
5
P2
D
6
P2
D
7
DGN
D
1
DV
CC
1
DV
CC
2
DGN
D
2
P1
D
0
P1
D
1
P1
D
2
P1
D
3
DGND3
V
RT
AGND
V
RM
3
AV
CC
V
RM
2
V
IN
AV
CC
V
RM
1
AGND
V
RB
DV
EE3
+
-
AG
+5V (A)
AG
ANALOG
INPUT
1
μF
+
AG
2V
AG
+
1
μF
10
μF
+
SHORT
DG
(D)
+5V
4V
10
μF
+
TTL CLK
(L
SB
)P2
D
0
P2D1
P2D2 P2D3
P2D4
P2D5
P2D6
(MS
B)
P
2D7
(L
SB
)P1
D
0
P1D1
P1D2
P1D3
P1D4
P1D5
P1D6
(MS
B)
P
1D7
SHORT THE ANALOG SYSTEM AND DIGITAL SYSTEM AT ONE POINT IMMEDIATELY
UNDER THE A/D CONVERTER. SEE THE NOTES ON OPERATION
IS THE CHIP CAPACITOR OF 0.1
μF.
+-