HM51W16165A Series
HM51W18165A Series
1048576-word
×
16-bit Dynamic Random Access Memory
ADE-203-372B (Z)
Rev. 2.0
Jul. 2, 1996
Description
The Hitachi HM51W16165A Series, HM51W18165A Series are CMOS dynamic RAMs organized as
1,048,576-word
×
16-bit. They employ the most advanced CMOS technology for high performance
and low power. HM51W16165A Series, HM51W18165A Series offer Extended Data Out (EDO) Page
Mode as a high speed access mode.
Features
•
•
•
Single 3.3 V (±0.3 V)
High speed
Access time: 60 ns/70 ns/80 ns (max)
Low power dissipation
Active mode : 468 mW/414 mW/360 mW (max) (HM51W16165A Series)
: 666 mW/594 mW/540 mW (max) (HM51W18165A Series)
Standby mode : 7.2 mW (max)
: 0.54 mW (max) (L-version)
EDO page mode capability
Long refresh period
4096 refresh cycles : 64 ms (HM51W16165A Series)
: 128 ms (L-version)
1024 refresh cycles : 16 ms (HM51W18165A Series)
: 128 ms (L-version)
•
•
This specification is fully compatible with the 16-Mbit DRAM specifications from TEXAS
INSTRUMENTS.
HM51W16165A Series, HM51W18165A Series
•
4 variations of refresh
RAS
-only refresh
CAS
-before-
RAS
refresh
Hidden refresh
Self refresh (L-version)
2
CAS
-byte control
Battery backup operation (L-version)
•
•
Ordering Information
Type No.
HM51W16165AJ-6
HM51W16165AJ-7
HM51W16165AJ-8
HM51W16165ALJ-6
HM51W16165ALJ-7
HM51W16165ALJ-8
HM51W18165AJ-6
HM51W18165AJ-7
HM51W18165AJ-8
HM51W18165ALJ-6
HM51W18165ALJ-7
HM51W18165ALJ-8
HM51W16165ATT-6
HM51W16165ATT-7
HM51W16165ATT-8
HM51W16165ALTT-6
HM51W16165ALTT-7
HM51W16165ALTT-8
HM51W18165ATT-6
HM51W18165ATT-7
HM51W18165ATT-8
HM51W18165ALTT-6
HM51W18165ALTT-7
HM51W18165ALTT-8
Access time
60 ns
70 ns
80 ns
60 ns
70 ns
80 ns
60 ns
70 ns
80 ns
60 ns
70 ns
80 ns
60 ns
70 ns
80 ns
60 ns
70 ns
80 ns
60 ns
70 ns
80 ns
60 ns
70 ns
80 ns
400-mil 50-pin plastic TSOP II (TTP-50/44DC)
Package
400-mil 42-pin plastic SOJ (CP-42D)
2
HM51W16165A Series, HM51W18165A Series
Pin Arrangement
HM51W16165AJ/ALJ Series
V
CC
I/O0
I/O1
I/O2
I/O3
V
CC
I/O4
I/O5
I/O6
I/O7
NC
NC
WE
RAS
A11
A10
A0
A1
A2
A3
V
CC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
(Top view)
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
HM51W16165ATT/ALTT Series
V
CC
I/O0
I/O1
I/O2
I/O3
V
CC
I/O4
I/O5
I/O6
I/O7
NC
1
2
3
4
5
6
7
8
9
10
11
50
49
48
47
46
45
44
43
42
41
40
V
SS
I/O15
I/O14
I/O13
I/O12
V
SS
I/O11
I/O10
I/O9
I/O8
NC
V
SS
I/O15
I/O14
I/O13
I/O12
V
SS
I/O11
I/O10
I/O9
I/O8
NC
LCAS
UCAS
OE
A9
A8
A7
A6
A5
A4
V
SS
NC
NC
WE
RAS
A11
A10
A0
A1
A2
A3
V
CC
15
16
17
18
19
20
21
22
23
24
25
(Top view)
36
35
34
33
32
31
30
29
28
27
26
NC
LCAS
UCAS
OE
A9
A8
A7
A6
A5
A4
V
SS
Pin Description
Pin name
A0 to A11
Function
Address input
— Row/Refresh address A0 to A11
— Column address
A0 to A7
Data input/Data output
Row address strobe
Column address strobe
Read/Write enable
Output enable
Power supply
Ground
No connection
I/O0 to I/O15
RAS
UCAS, LCAS
WE
OE
V
CC
V
SS
NC
3
HM51W16165A Series, HM51W18165A Series
Pin Arrangement
HM51W18165AJ/ALJ Series
V
CC
I/O0
I/O1
I/O2
I/O3
V
CC
I/O4
I/O5
I/O6
I/O7
NC
NC
WE
RAS
NC
NC
A0
A1
A2
A3
V
CC
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
(Top view)
V
SS
I/O15
I/O14
I/O13
I/O12
V
SS
I/O11
I/O10
I/O9
I/O8
NC
LCAS
UCAS
OE
A9
A8
A7
A6
A5
A4
V
SS
HM51W18165ATT/ALTT Series
V
CC
I/O0
I/O1
I/O2
I/O3
V
CC
I/O4
I/O5
I/O6
I/O7
NC
1
2
3
4
5
6
7
8
9
10
11
50
49
48
47
46
45
44
43
42
41
40
V
SS
I/O15
I/O14
I/O13
I/O12
V
SS
I/O11
I/O10
I/O9
I/O8
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
NC
NC
WE
RAS
NC
NC
A0
A1
A2
A3
V
CC
15
16
17
18
19
20
21
22
23
24
25
(Top view)
36
35
34
33
32
31
30
29
28
27
26
NC
LCAS
UCAS
OE
A9
A8
A7
A6
A5
A4
V
SS
Pin Description
Pin name
A0 to A9
Function
Address input
— Row/Refresh address A0 to A9
— Column address
A0 to A9
Data input/Data output
Row address strobe
Column address strobe
Read/Write enable
Output enable
Power supply
Ground
No connection
I/O0 to I/O15
RAS
UCAS, LCAS
WE
OE
V
CC
V
SS
NC
4
HM51W16165A Series, HM51W18165A Series
Block Diagram
RAS
RAS
Control
Circuit
UCAS LCAS
CAS
Control
Circuit
WE
WE
Control
Circuit
OE
OE
Control
Circuit
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
I/O0
I/O1
I/O
buffer
I/O14
I/O15
Row
decoder
&
driver
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
Column decoder & driver
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
Column decoder & driver
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
I/O2
I/O3
I/O12
I/O13
Row
decoder
&
driver
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
I/O
buffer
I/O4
I/O
buffer
I/O5
I/O10
I/O11
Row
decoder
&
driver
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
Column decoder & driver
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
Column decoder & driver
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
I/O6
I/O7
I/O8
I/O9
Row
decoder
&
driver
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
256k memory cell array
Sense amp. & I/O bus
256k memory cell array
I/O
buffer
Column address buffer
Address : A0 to A7 : HM51W16165A
Address : A0 to A9 : HM51W18165A
Row address buffer
Address : A0 to A11 : HM51W16165A
Address : A0 to A9 : HM51W18165A
5
