ADE-203-269A (Z)
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
µm
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.
• Test function
• Battery back up operation
— HM514400BL Series (L-version)
— HM514400CL Series (L-version)
HM514400B/BL Series
HM514400C/CL Series
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
HM514400B/BL, HM514400C/CL Series
Ordering Information
Type No.
HM514400BS-6
HM514400BS-7
HM514400BS-8
HM514400BLS-6
HM514400BLS-7
HM514400BLS-8
HM514400CS-6
HM514400CS-7
HM514400CS-8
HM514400CLS-6
HM514400CLS-7
HM514400CLS-8
HM514400BZ-6
HM514400BZ-7
HM514400BZ-8
HM514400BLZ-6
HM514400BLZ-7
HM514400BLZ-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
400-mil 20-pin
plastic ZIP
(ZP-20)
Package
300-mil 26-pin
plastic SOJ
(CP-26/20D)
Type No.
HM514400CZ-6
HM514400CZ-7
HM514400CZ-8
HM514400CLZ-6
HM514400CLZ-7
HM514400CLZ-8
HM514400BTT-6
HM514400BTT-7
HM514400BTT-8
HM514400BLTT-6
HM514400BLTT-7
HM514400BLTT-8
HM514400CTT-6
HM514400CTT-7
HM514400CTT-8
HM514400CLTT-6
HM514400CLTT-7
HM514400CLTT-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
26-pin
plastic TSOPII
(TTP-26/20D)
Package
400-mil 20-pin
plastic ZIP
(ZP-20)
2
HM514400B/BL, HM514400C/CL Series
Pin Arrangement
HM514400BS/BLS Series
HM514400CS/CLS Series
HM514400BZ/BLZ Series
HM514400CZ/CLZ Series
1 OE
CAS 2
3 I/O3
I/O4 4
I/O1 6
WE 8
A9 5
22 OE
A9 10
11 A0
A0 9
A1 10
A2 11
A3 12
V
CC
13
18 A8
17 A7
16 A6
15 A5
14 A4
A1 12
13 A2
A3 14
A4 16
A6 18
19 A7
A8 20
(Bottom view)
15 V
CC
17 A5
9 RAS
5 V
SS
7 I/O2
I/O1 1
I/O2 2
WE 3
RAS 4
26 V
SS
25 I/O4
24 I/O3
23 CAS
(Top view)
HM514400BTT/BLTT Series
HM514400CTT/CLTT Series
I/O1 1
I/O2 2
WE 3
RAS 4
A9
5
26 V
SS
25 I/O4
24 I/O3
23 CAS
22 OE
A0
9
18 A8
17 A7
16 A6
15 A5
14 A4
A1 10
A2 11
A3 12
V
CC
13
(Top view)
3
HM514400B/BL, HM514400C/CL Series
Pin Description
Pin name
A0 to A9
A0 to A9
I/O1 to I/O4
RAS
CAS
WE
OE
V
CC
V
SS
Function
Address input
Refresh address input
Data-in/Data-out
Row address strobe
Column address strobe
Read/Write enable
Output enable
Power (+5 V)
Ground
4
Block Diagram
RAS
Row
Driver
Row
Driver
RAS Control
Circuit
256 k Memory Array Mat
256 k Memory Array Mat
I/O1
I/O1 Buffer
I/O Bus & Column Decoder
Row
Driver
Row
Driver
I/O Bus & Column Decoder
256 k Memory Array Mat
256 k Memory Array Mat
256 k Memory Array Mat
Row
Driver
Row
Driver
CAS
CAS Control
Circuit
256 k Memory Array Mat
Row Address Buffer
I/O2
I/O2 Buffer
I/O Bus & Column Decoder
Row
Driver
Row
Driver
I/O Bus & Column Decoder
256 k Memory Array Mat
256 k Memory Array Mat
WE
WE Control
Circuit
Row Decoder & Peripheral Circuit
Address A0–A9
Row
Driver
Row
Driver
256 k Memory Array Mat
I/O Bus & Column Decoder
Row
Driver
256 k Memory Array Mat
I/O3
OE
I/O3 Buffer
OE Control
Circuit
I/O Bus & Column Decoder
Row
Driver
256 k Memory Array Mat
Row
Driver
Row
Driver
256 k Memory Array Mat
256 k Memory Array Mat
256 k Memory Array Mat
Column Address Buffer
Row
Driver
Row
Driver
I/O4
I/O4 Buffer
I/O Bus & Column Decoder
I/O Bus & Column Decoder
256 k Memory Array Mat
256 k Memory Array Mat
HM514400B/BL, HM514400C/CL Series
5
