LH521028 Просмотр технического описания (PDF) - Sharp Electronics
Номер в каталоге
Компоненты Описание
производитель
LH521028 Datasheet PDF : 15 Pages
| |||
CMOS 64K × 18 Static RAM
LH521028
TRUTH TABLE
ADDRESS
E
SH SL ALE G
Don’t Care H X X H X
Valid
L L HHL
Valid
LHLHL
Valid
LL LHL
Valid
L L LHH
Don’t Care L L L L L
Valid
L L HHX
Valid
LHLHX
Valid
L L LHX
Valid
L HHHX
Don’t Care L L L L X
NOTE:
X = Don’t Care, L = LOW, H = HIGH
PIN DESCRIPTIONS
PIN
SIGNAL
PIN
1 VSS
14
2 VCC
15
3 SL
16
4 SH
17
5E
18
6 A0
19
7 A1
20
8 DQ9
21
9 DQ10
22
10 VCC
23
11 VSS
24
12 DQ11
25
13 DQ12
26
SIGNAL
DQ13
DQ14
VSS
VCC
DQ15
DQ16
DQ17
A2
A3
A4
A5
A6
A7
W
DQ0-DQ8
DQ9-DQ17
MODE
ICC
X High-Z
High-Z
Standby
ISB
H Active
High-Z
Read
ICC1
H High-Z
Active
Read
ICC1
H Active
Active
Read
ICC1
H High-Z
High-Z
Read
ICC1
H Data Out Data Out Read
ICC1
L Data In
Don’t Care Write, low byte ICC1
L Don’t Care Data In
Write, high byte ICC1
L Data In
Data In
Write, both bytes ICC1
L Don’t Care Don’t Care Write, inhibited ICC1
L Data In
Data In
Write, both bytes ICC1
PIN
SIGNAL
27 VSS
28 VCC
29 A8
30 A9
31 A10
32 A11
33 A12
34 DQ0
35 DQ1
36 VCC
37 VSS
38 DQ2
39 DQ3
PIN
SIGNAL
40 DQ4
41 DQ5
42 VSS
43 VCC
44 DQ6
45 DQ7
46 DQ8
47 A13
48 A14
49 A15
50 G
51 ALE
52 W
4-213
Share Link: 