Sam4s ER-5200 Service Manual page 41
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Also See for ER-5200:
- Service manual (123 pages) ,
- Operation and program manual (7 pages) ,
- Operation and program manual (194 pages)
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6-1 Semiconductor Base Diagram
6-1-3 Logic ICs
ADDRESS
INPUTS
CS1
CHIP–
SELECT
CS2
INPUTS
CS3
A1
A2
A3
A
A4
DATA
A5
PORT
A6
A7
A8
DIRECTION
OUTPUT ENABLE
Data
Inputs
Output
Enables
SAM4S ER-5200 Series
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LOGIC DIAGRAM
1
15
A0
Y0
14
2
Y1
A1
13
Y2
3
12
A2
Y3
11
Y4
10
Y5
9
Y6
7
Y7
6
PIN 16 = V CC
4
PIN 8 = GND
5
FUNCTION TABLE
2
18
3
17
4
16
5
15
6
14
7
13
8
12
9
1
19
PIN 10 = GND
PIN 20 = V
CC
2
18
A1
3
17
A2
4
16
A3
5
15
A4
6
14
A5
7
13
A6
8
12
A7
9
11
A8
1
PIN 20 = V
CC
OE1
PIN 10 = GND
OE2
19
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Inputs
CS1CS2 CS3 A2 A1 A0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
X
X
H
ACTIVE–LOW
X
H
X
OUTPUTS
L
X
X
H
L
L
H
L
L
H
L
L
H
L
L
H
L
L
H
L
L
H
L
L
H
L
L
H = high level (steady state); L = low level (steady state); X = don't care
Figure 6-7 74HC138
B1
B2
B3
Control Inputs
B4
B
Output
DATA
B5
Enable
Direction
PORT
B6
L
B7
L
11
B8
H
X = don't care
Figure 6-8 74HC245
Y1
Y2
Y3
Y4
Noninverting
Outputs
Y5
Y6
Y7
Y8
Figure 6-9 74HC541
6 Reference Information
FUNCTION TABLE
Outputs
X
X
X
H
H
H
H
H
H
H
X
X
X
H
H
H
H
H
H
H
X
X
X
H
H
H
H
H
H
H
L
L
L
L
H
H
H
H
H
H
L
L
H
H
L
H
H
H
H
H
L
H
L
H
H
L
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
L
L
H
H
H
H
L
H
H
H
L
H
H
H
H
H
H
L
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
FUNCTION TABLE
Operation
L
Data Transmitted from Bus B to Bus A
H
Data Transmitted from Bus A to Bus B
X
Buses Isolated (High–Impedance State)
FUNCTION TABLE
Inputs
Output Y
OE1
OE2
A
L
L
L
L
L
L
H
H
H
X
X
Z
X
H
X
Z
X = Don't Care
Z = High Impedance
H
H
H
H
H
H
H
H
H
L
H
L
6-5
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