Blease 8500 - Page 69

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B
C
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654321
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Title
Number RevisionSize
B
Date: 4-Feb-2002 Sheet of
File: \\Cad 3\c\1 JONS ARCHIVE\8500archive\circuit diagrams\10110190-3\10100190-3.ddbDrawn By:
VSS
1
VCC
2
CEN
3
RDN
4
DACKN
5
IACKN
6
TXDB
7
RXDB
8
D7
9
D6
10
D5
11
D4
12
D3
13
VSS
14
D2
15
I/O3B
16
D1
17
D0
18
RXDA
19
TXDA
20
I/O2B
21
I/O1B
22
I/O0B
23
I/O3A
24
I/O2A
25
I/O1A
26
I/O0A
27
VSS
28
I/O0C
29
I/O1C
30
I/O2C
31
I/O3C
32
I/O0D
33
I/O1D
34
I/O2D
35
RXDC
36
TXDC
37
RESET
38
I/O3D
39
VSS
40
X2
41
X1/CLK
42
TXDD
43
RXDD
44
IRQN
45
A5
46
A4
47
A3
48
A2
49
A1
50
A0
51
WRN
52
U43
SC26C94
VCCVCC
D0....D7
A0....A5
U15 Y2
RD#..WR#
R108
RES2
VCC
U5 P8.0
XT3
CRYSTAL
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
J21
HEADER 8X2
T2
1
T1
2
R2
3
R2
4
T1
5
R1
6
R1
7
GND
8
VCC
9
C1+
10
V+
11
C1-
12
C2+
13
C2-
14
V-
15
R4
16
R4
17
T2
18
T3
19
T4
20
T4
21
R3
22
R3
23
T3
24
232 INPUTS
232 OUTPUTS
U44
AMD208E
GND
GND
GND
GND
VCC
1
2
3
4
5
6
7
8
9
10
J17
HEADER 10
1
2
3
4
5
6
7
8
9
10
J18
HEADER 10
1
2
3
4
5
6
7
8
9
10
J19
HEADER 10
1
2
3
4
5
6
7
8
9
10
J20
HEADER 10
GND
GND
GND
GND
C63
1µF
C64
1µF
C67
1µF
C66
1µF
C65
1µF
U11 PIN16
BLEASE DISPLAY INTERFACE
10100190
issue 1
AA
5 5
IRQN
D0 ... D7
A0 ... A5
WR# RD#
A5
A4
A3
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
CS
2 4
53
U45 SINGLE INVERTER
RESET#
VCC
GND
C68
0.1
GND
VCC
rfi
RFF29
rfi
RFF30
rfi
RFF31
rfi
RFF32
rfi
RFF33
rfi
RFF34
rfi
RFF35
rfi
RFF36
GND
GND
GND
GND
GND
GND
GND
GND