Sam4s ER-380F - Page 35

6 Reference Information
6-4 SAM4S ER-380M/F SERIES
6-1 Semiconductor Base Diagram
6-1-2 Memory
Figure 6-3 EPROM M27C4001 Specification
6-1-3 Logic ICs
Figure 6-4 74HCT08 Figure 6-5 74HC14
Figure 6-6 74HC138
Figure 6-7 74HC541
L
L
H
H
L
H
L
H
FUNCTION TABLE
Inputs Output
AB
L
L
L
H
Y
1314 12 11 10 9 8
21 34567
V
CC
B4 A4 Y4 B3 A3 Y3
A1 B1 Y1 A2 B2 Y2 GND
1314 12 11 10 9 8
21 34567
V
CC
A6 Y6 A5 Y5 A4 Y4
A1 Y1 A2 Y2 A3 Y3 GND
L
H
FUNCTION TABLE
Inputs Outputs
A
H
L
Y
Inputs Outputs
CS1CS2 CS3 A2 A1 A0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
X X H XXXHHHHHHHH
X H X XXXHHHHHHHH
L X X XXXHHHHHHHH
H L L LLL LHHHHHHH
H L L LLHHLHHHHHH
H L L LHLHHLHHHHH
H L L LHHHHHLHHHH
H L L HLLHHHHLHHH
H L L HLHHHHHHLHH
H L L HHLHHHHHHLH
H L L HHHHHHHHHHL
FUNCTION TABLE
H = high level (steady state); L = low level (steady state); X = don’t care
LOGIC DIAGRAM
7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
Y7
9
10
11
12
13
14
15
3
2
1
CS1
CS2
A0
A1
A2
ACTIVE–LOW
OUTPUTS
ADDRESS
INPUTS
CS3
CHIP–
SELECT
INPUTS
5
4
6
PIN 16 = V
CC
PIN 8 = GND
FUNCTION TABLE
18
Y1
2
A1
17
Y2
3
A2
16
Y3
4
A3
15
Y4
5
A4
14
Y5
6
A5
13
Y6
7
A6
12
Y7
8
A7
11
Y8
9
A8
OE1
OE2
1
19
Output
Enables
Data
Inputs
Noninverting
Outputs
PIN 20 = V
CC
PIN 10 = GND
L
L
H
X
L
L
X
H
L
H
X
X
Inputs
Output Y
OE1 OE2 A
L
H
Z
Z
X = Don’t Care
Z = High Impedance
FUNCTION TABLE
M27C4001