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Электронный компонент: HM514400B

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HM514400B/BL Series
HM514400C/CL Series
1,048,576-word
4-bit Dynamic Random Access Memory
Rev. 1.0
Nov. 29, 1994
The Hitachi HM514400B/BL, HM514400C/CL
are CMOS dynamic RAM organized 1,048,576-
word
4-bit. HM514400B/BL, HM514400C/CL
have realized higher density, higher performance
and various functions by employing 0.8
m CMOS
process technology and some new CMOS circuit
design technologies. The HM514400B/BL,
HM514400C/CL offer Fast Page Mode as a high
speed access mode. Multiplexed address input
permits the HM514400B/BL, HM514400C/CL to
be packaged in standard 300-mil 26-pin plastic
SOJ, standard 400-mil 20-pin plastic ZIP and 26-
pin plastic TSOP II.
Features
Single 5 V (
10%)
High speed
-- Access time
60 ns/70 ns/80 ns (max)
Low power dissipation
-- Active mode
605 mW/550 mW/495 mW (max)
-- Standby mode 11 mW (max)
0.55 mW (max) (L-version)
Fast page mode capability
1024 refresh cycles : 16 ms
1024 refresh cycles : 128 ms (L-version)
3 variations of refresh
--
RAS-only refresh
--
CAS-before-RAS refresh
-- Hidden refresh
Test function
Battery back up operation
-- HM514400BL Series (L-version)
-- HM514400CL Series (L-version)
ADE-203-269A (Z)
Ordering Information
Access
Type No.
time
Package
HM514400BS-6
60 ns
300-mil 26-pin
HM514400BS-7
70 ns
plastic SOJ
HM514400BS-8
80 ns
(CP-26/20D)
HM514400BLS-6
60 ns
HM514400BLS-7
70 ns
HM514400BLS-8
80 ns
HM514400CS-6
60 ns
HM514400CS-7
70 ns
HM514400CS-8
80 ns
HM514400CLS-6
60 ns
HM514400CLS-7
70 ns
HM514400CLS-8
80 ns
HM514400BZ-6
60 ns
400-mil 20-pin
HM514400BZ-7
70 ns
plastic ZIP
HM514400BZ-8
80 ns
(ZP-20)
HM514400BLZ-6
60 ns
HM514400BLZ-7
70 ns
HM514400BLZ-8
80 ns
Access
Type No.
time
Package
HM514400CZ-6
60 ns
400-mil 20-pin
HM514400CZ-7
70 ns
plastic ZIP
HM514400CZ-8
80 ns
(ZP-20)
HM514400CLZ-6
60 ns
HM514400CLZ-7
70 ns
HM514400CLZ-8
80 ns
HM514400BTT-6
60 ns
26-pin
HM514400BTT-7
70 ns
plastic TSOPII
HM514400BTT-8
80 ns
(TTP-26/20D)
HM514400BLTT-6
60 ns
HM514400BLTT-7
70 ns
HM514400BLTT-8
80 ns
HM514400CTT-6
60 ns
HM514400CTT-7
70 ns
HM514400CTT-8
80 ns
HM514400CLTT-6
60 ns
HM514400CLTT-7
70 ns
HM514400CLTT-8
80 ns
2
HM514400B/BL, HM514400C/CL Series
Pin Arrangement
3
HM514400B/BL, HM514400C/CL Series
1
2
3
4
5
9
10
11
12
13
I/O1
I/O2
WE
RAS
A9
A0
A1
A2
A3
V
CC
V
I/O4
I/O3
CAS
OE
A8
A7
A6
A5
A4
SS
26
25
24
23
22
18
17
16
15
14
HM514400BS/BLS Series
HM514400CS/CLS Series
(Top view)
HM514400BZ/BLZ Series
HM514400CZ/CLZ Series
(Bottom view)
HM514400BTT/BLTT Series
HM514400CTT/CLTT Series
(Top view)
I/O1
I/O2
WE
RAS
A9
A0
A1
A2
A3
V
CC
V
I/O4
I/O3
CAS
OE
A8
A7
A6
A5
A4
SS
1
2
3
4
5
9
10
11
12
13
26
25
24
23
22
18
17
16
15
14
1
3
5
7
9
11
13
15
17
19
2
4
6
8
10
12
14
16
18
20
CC
OE
I/O3
V
I/O2
RAS
A0
A2
V
A5
A7
CAS
I/O4
I/O1
WE
A9
A1
A3
A4
A6
A8
SS
Pin Description
Pin name
Function
A0 to A9
Address input
A0 to A9
Refresh address input
I/O1 to I/O4
Data-in/Data-out
RAS
Row address strobe
CAS
Column address strobe
WE
Read/Write enable
OE
Output enable
V
CC
Power (+5 V)
V
SS
Ground
4
HM514400B/BL, HM514400C/CL Series
Block Diagram
5
HM514400B/BL, HM514400C/CL Series
256 k Memory Array Mat
I/O Bus & Column Decoder
256 k Memory Array Mat
256 k Memory Array Mat
256 k Memory Array Mat
256 k Memory Array Mat
256 k Memory Array Mat
256 k Memory Array Mat
256 k Memory Array Mat
I/O Bus & Column Decoder
I/O Bus & Column Decoder
I/O Bus & Column Decoder
256 k Memory Array Mat
I/O Bus & Column Decoder
256 k Memory Array Mat
256 k Memory Array Mat
256 k Memory Array Mat
256 k Memory Array Mat
256 k Memory Array Mat
256 k Memory Array Mat
256 k Memory Array Mat
I/O Bus & Column Decoder
I/O Bus & Column Decoder
I/O Bus & Column Decoder
Row
Driver
Row
Driver
Row
Driver
Row
Driver
Row
Driver
Row
Driver
Row
Driver
Row
Driver
Row Decoder & Peripheral Circuit
WE
RAS
CAS
Row
Driver
Row
Driver
Row
Driver
Row
Driver
Row
Driver
Row
Driver
Row
Driver
Row
Driver
Row Address Buffer
Column Address Buffer
Address A0A9
I/O4 Buffer
RAS Control
Circuit
CAS Control
Circuit
WE Control
Circuit
OE
OE Control
Circuit
I/O3 Buffer
I/O2 Buffer
I/O1 Buffer
I/O1
I/O2
I/O3
I/O4