Werbung
I Whol a a
©)
64-Kbit Dynamic RAM (LH2164)
This is a 65536-word x 1-bit dynamic MOS RAM made by
N-channel
2-layer
polysilicone
gate
process.
It is
encapsulated in 16-pin standard package by multiplexing
address input.
Name
[NC |Notused
Address input
[Din | Datainput
[Address
input
Address input
Address input
1S
Address input
| 15 [cas
| Column adress, strobe
| 16 | Vss | Power source (0 V)
ee ed
| 3 |
| 5 | Ao
ie
I
I
aes
| 9 |
;
Ss
Address input
Address input
Address input
7
Power source (+5 V}
Address input
64
64]
64
64
a
a
a
Wy
ao}
oO
o
a
=
2|
CELL
Q |] CELL
=} 2|
CELL
©),
-CEUL
=
ao
©
fe
w|
ARRAY
W
ARRAY
wt
wi
ARRAY
=
ARRAY
if
uw
"
natn
79)
ir
z
=
zi]z
=
z
Al
re
WW
rol
wl
w
oO
Ww
5
"
x
nN]
on
a
7)
A2 (6)
a
Q
2
COLUMN
LSU coLuMN
}____J coLumn
[Ef W coLumN
A3
re
DECODER
{VS DECODER
f|————~| DECODER
[AP
DECODER
z
A4
=
64
64]
64
64
a
ts
Qa
i
a
ui
Qa
jem
a
a
as
(3
3
2]
CELL
9
CELL
=|
2
CELL
2
CELL
=
ee
<
w
ARRAY
w
ARRAY
w
fw
ARRAY
a
ARRAY
Ww
Zz
=
Zz
2
=
=
Ww
o
w)
Ww
Oo
w
"
ia
Al
wn
a
oO
DATA
BUS SELECT
WRITE
CLOCK
INPUT
DATA BUFFER
RAS(4)
Ee
CLOCK
OSC
OUTPUT
cas ©
NO.2
DATA BUFFER
=27—
Werbung
