HM51W16405B Series
HM51W17405B Series
4,194,304-word
×
4-bit Dynamic Random Access Memory
ADE-203-543 (Z)
Preliminary
Rev. 0.0
Apr. 20, 1996
Description
The Hitachi HM51W16405B Series, HM51W17405B Series are CMOS dynamic RAMs organized
4,194,304-word
×
4-bit. They employ the most advanced CMOS technology for high performance and low
power. The HM51W16405B Series, HM51W17405B 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 : 360mW/324 mW/288 mW (max) (HM51W16405B Series)
: 396mW/360 mW/324 mW (max) (HM51W17405B Series)
Standby mode : 7.2 mW (max)
: 0.36 mW (max) (L-version)
•
EDO page mode capability
•
Long refresh period
4096 refresh cycles : 64 ms (HM51W16405B Series)
: 128 ms (L-version)
2048 refresh cycles : 32 ms (HM51W17405B Series)
: 128 ms (L-version)
Preliminary: This document contains information on a new product. Specifications and information
contained herein are subject to change without notice.
This specification is fully compatible with the 16-Mbit DRAM specifications from TEXAS
INSTRUMENTS.
HM51W16405B Series, HM51W17405B Series
•
4 variations of refresh
RAS-only
refresh
CAS-before-RAS
refresh
Hidden refresh
Self refresh (L-version)
•
Battery backup operation (L-version)
•
Test function
16-bit parallel test mode
Ordering Information
Type No.
HM51W16405BS-6
HM51W16405BS-7
HM51W16405BS-8
HM51W16405BLS-6
HM51W16405BLS-7
HM51W16405BLS-8
HM51W17405BS-6
HM51W17405BS-7
HM51W17405BS-8
HM51W17405BLS-6
HM51W17405BLS-7
HM51W17405BLS-8
HM51W16405BTS-6
HM51W16405BTS-7
HM51W16405BTS-8
HM51W16405BLTS-6
HM51W16405BLTS-7
HM51W16405BLTS-8
HM51W17405BTS-6
HM51W17405BTS-7
HM51W17405BTS-8
HM51W17405BLTS-6
HM51W17405BLTS-7
HM51W17405BLTS-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
300-mil 26-pin plastic TSOP II
(TTP-26/24DA)
Package
300-mil 26-pin plastic SOJ
(CP-26/24DB)
2
HM51W16405B Series, HM51W17405B Series
Pin Arrangement
HM51W16405BS/BLS Series
HM51W16405BTS/BLTS Series
V
CC
I/O1
I/O2
WE
RAS
A11
1
2
3
4
5
6
26
25
24
23
22
21
V
SS
I/O4
I/O3
CAS
OE
A9
V
CC
I/O1
I/O2
WE
RAS
A11
1
2
3
4
5
6
26
25
24
23
22
21
V
SS
I/O4
I/O3
CAS
OE
A9
A10
A0
A1
A2
A3
V
CC
8
9
10
11
12
13
19
18
17
16
15
14
(Top view)
A8
A7
A6
A5
A4
V
SS
A10
A0
A1
A2
A3
V
CC
8
9
10
11
12
13
19
18
17
16
15
14
(Top view)
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 A9
Data input/Data output
Row address strobe
Column address strobe
Read/Write enable
Output enable
Power supply
Ground
I/O1 to I/O4
RAS
CAS
WE
OE
V
CC
V
SS
3
HM51W16405B Series, HM51W17405B Series
Pin Arrangement
HM51W17405BS/BLS Series
HM51W17405BTS/BLTS Series
V
CC
I/O1
I/O2
WE
RAS
NC
1
2
3
4
5
6
26
25
24
23
22
21
V
SS
I/O4
I/O3
CAS
OE
A9
V
CC
I/O1
I/O2
WE
RAS
NC
1
2
3
4
5
6
26
25
24
23
22
21
V
SS
I/O4
I/O3
CAS
OE
A9
A10
A0
A1
A2
A3
V
CC
8
9
10
11
12
13
19
18
17
16
15
14
A8
A7
A6
A5
A4
V
SS
A10
A0
A1
A2
A3
V
CC
8
9
10
11
12
13
19
18
17
16
15
14
A8
A7
A6
A5
A4
V
SS
(Top view)
(Top view)
Pin Description
Pin name
A0 to A10
Function
Address input
— Row/Refresh address A0 to A10
— Column address
A0 to A10
Data input/Data output
Row address strobe
Column address strobe
Read/Write enable
Output enable
Power supply
Ground
No connection
I/O1 to I/O4
RAS
CAS
WE
OE
V
CC
V
SS
NC
4
HM51W16405B Series, HM51W17405B Series
Block Diagram
RAS
I/O 4
I/O
Buffer 4
CAS
WE
OE
I/O 3
I/O
Buffer 3
Column decoder & driver
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
Peripheral circuit
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
Selector
Selector
Selector
Row decoder & driver
Row decoder & driver
Selector
Column decoder & driver
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
256k memory
Sense amp. &
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
cell
I/O
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
array
bus
Row decoder & driver
Selector
Selector
I/O
Buffer 1
I/O 1
I/O
Buffer 2
I/O 2
Address A0 to A11: HM51W16405B
Address A0 to A10: HM51W17405B
Selector
Selector
Row decoder & driver
5