HANBit
HMS51232J4A
SRAM MODULE 2Mbyte (512K x 32-Bit), 68-Pin JLCC Packaging
Part No. HMS51232J4A
GENERAL DESCRIPTION
The HMS51232J4A is a static random access memory (SRAM) module containing 524,288 words organized in a x32-bit
configuration. The module consists of four 512K x 8 SRAMs mounted on a 68-pin, single-sided, FR4-printed circuit board.
Four chip enable inputs, (/CE1, /CE2, /CE3 and /CE4) are used to enable the module’s 4 bytes independently. Output
enable(/OE) and write enable(/WE) can set the memory input and output.
Data is written into the SRAM memory when write enable (/WE) and chip enable (/CE) inputs are both LOW.
accomplished when /WE remains HIGH and /CE and output enable (/OE) are LOW.
For reliability, this SRAM module is designed as multiple power and ground pin. All module components may be powered from
a single +5V DC power supply and all inputs and outputs are fully TTL-compatible.
Reading is
FEATURES
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Access time : 10, 12 and 15ns
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High-density 2MByte design
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High-reliability, low-power design
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Single +5V
±0.5V
power supply
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Three state output and TTL-compatible
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FR4-PCB design
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Low profile 68-Pin JLCC
PIN ASSIGNMENT
DQ16
A18
A17
/CE4
/CE3
/CE2
/CE1
NC
Vcc
NC
NC
/OE
/WE
A16
A15
A14
DQ15
DQ17
DQ18
DQ19
Vss
DQ20
DQ21
DQ22
DQ23
Vcc
DQ24
DQ25
DQ26
DQ27
Vss
DQ28
DQ29
DQ30
10 9 8
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
7
6
5
4
3
2
1
68 67 66 65 64 63 62 61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
26
44
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
OPTIONS
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Timing
10ns access
12ns access
15ns access
w
Packages
68-pin JLCC
MARKING
-10
-12
-15
J
DQ14
DQ13
DQ12
Vss
DQ11
DQ10
DQ9
DQ8
Vcc
DQ7
DQ6
DQ5
DQ4
Vss
DQ3
DQ2
DQ1
URL: www.hbe.co.kr
Rev. 1.0 (May / 2003)
1
DQ31
A6
A5
A4
A3
A2
A1
A0
Vcc
A13
A12
A11
A10
A9
A8
A7
DQ0
68-Pin JLCC
TOP VIEW
HANBit Electronics Co.,Ltd.
HANBit
PIN DESCRIPTION
DQ0
–
DQ31
A0
–
A18
/WE
/CE1-4
/OE
Vcc
Vss
Data Inputs/Outputs
Address Inputs
Write Enable
Chip Selects
Output Enable
Power Supply
Ground
HMS51232J4A
BLOCK DIAGRAM
/CE1
/CE2
/CE3
/CE4
/WE
/OE
A0-18
U1
512Kx8
U2
512Kx8
U3
512Kx8
U4
512Kx8
8
8
8
8
DQ0-7
DQ8-15
DQ16-23
DQ24-31
TRUTH TABLE
MODE
STANDBY
NOT SELECTED
READ
WRITE
/OE
X
H
L
X
/CE
H
L
L
L
/WE
X
H
H
L
DQ
HIGH-Z
HIGH-Z
Dout
Din
POWER
STANDBY
ACTIVE
ACTIVE
ACTIVE
URL: www.hbe.co.kr
Rev. 1.0 (May / 2003)
2
HANBit Electronics Co.,Ltd.
HANBit
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Voltage on Any Pin Relative to Vss
Voltage on Vcc Supply Relative to Vss
Power Dissipation
Storage Temperature
Operating Temperature
SYMBOL
V
IN,OUT
V
CC
P
D
T
STG
T
A
HMS51232J4A
RATING
-0.5V to +7.0V
-0.5V to +7.0V
4W
-55oC to +125oC
0oC to +70oC
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Stresses greater than those listed under " Absolute Maximum Ratings" may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at these or any other conditions above those indicated
in the operating section of this specification is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect reliability.
RECOMMENDED DC OPERATING CONDITIONS
( TA=0 to 70 o C )
PARAMETER
Supply Voltage
Ground
Input High Voltage
Input Low Voltage
*
SYMBOL
V
CC
V
SS
V
IH
V
IL
MIN
4.5V
0
2.2
-0.5*
TYP.
5.0V
0
-
-
MAX
5.5V
0
Vcc+0.5V**
0.8V
V
IL
(Min.) = -2.0V (Pulse Width
£
10ns) for I
£
20 mA
**
V
IH
(Max.) = Vcc+2.0V (Pulse Width
£
10ns) for I
£
20 mA
DC AND OPERATING CHARACTERISTICS (1)(0
oC
£
TA
£
70 oC ; Vcc = 5V
±
0.5V )
PARAMETER
Input Leakage Current
Output Leakage Current
Output High Voltage
Output Low Voltage
* Vcc=5.0V, Temp=25 oC
TEST CONDITIONS
V
IN
= Vss to Vcc
/CE=V
IH or /
OE =V
IH
or /WE=V
IL
V
OUT
=Vss to V
CC
I
OH
= -4.0mA
I
OL
= 8.0mA
SYMBOL
IL
I
IL
0
V
OH
V
OL
MIN
-4
-4
2.4
MAX
4
4
-
0.4
UNITS
mA
mA
V
V
DC AND OPERATING CHARACTERISTICS (2)
DESCRIPTION
Power Supply
Current: Operating
Power Supply
Current: Standby
TEST CONDITIONS
Min. Cycle, 100% Duty
/CE=V
IL
, V
IN
=V
IH
or V
IL
,
I
OUT
=0mA
Min. Cycle, /CE=V
IH
f=0MHZ, /CE³V
CC
-0.2V,
V
IN
³
V
CC
-0.2V or V
IN
£0.2V
l
SB
l
SB1
200
40
200
40
200
40
mA
mA
l
CC
840
820
800
mA
SYMBOL
MAX
-10
-12
-15
UNIT
URL: www.hbe.co.kr
Rev. 1.0 (May / 2003)
3
HANBit Electronics Co.,Ltd.
HANBit
CAPACITANCE
DESCRIPTION
Input /Output Capacitance
Input Capacitance
TEST CONDITIONS
V
I/O
=0V
V
IN
=0V
SYMBOL
C
I/O
C
IN
HMS51232J4A
MAX
28
20
UNIT
pF
pF
* NOTE
: Capacitance is sampled and not 100% tested
AC CHARACTERISTICS
(0oC
£
TA
£
70 oC ; Vcc = 5V
±
0.5V, unless otherwise specified)
TEST CONDITIONS
PARAMETER
Input Pulse Level
Input Rise and Fall Time
Input and Output Timing Reference Levels
Output Load
VALUE
0.V to 3V
3ns
1.5V
See below
Output Load (A)
+5V
Output Load (B)
for t
HZ
, t
LZ
, t
WHZ
, t
OW
, t
OLZ
& t
OHZ
+5V
480W
D
OUT
255W
30pF*
D
OUT
255W
480W
5pF*
* Including scope and jig capacitance
READ CYCLE
-10
PARAMETER
Read Cycle Time
Address Access Time
Chip Select to Output
Output Enable to Output
Output Enable to Low-Z Output
Chip Enable to Low-Z Output
Output Disable to High-Z Output
Chip Disable to High-Z Output
Output Hold from Address Change
Chip Select to Power Up Time
Chip Select to Power Down Time
SYMBOL
MIN
t
RC
t
AA
t
CO
t
OE
t
OLZ
t
LZ
t
OHZ
t
HZ
t
OH
t
PU
t
PD
10
-
-
-
0
3
0
0
3
0
-
MAX
-
10
10
5
-
-
5
5
-
-
10
MIN
12
-
-
-
0
3
0
0
3
0
-
MAX
-
12
12
6
-
-
6
6
-
-
12
MIN
15
-
-
-
0
3
0
0
3
0
-
MAX
-
15
15
7
-
-
7
7
-
-
15
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
-12
-15
UNIT
URL: www.hbe.co.kr
Rev. 1.0 (May / 2003)
4
HANBit Electronics Co.,Ltd.
HANBit
WRITE CYCLE
PARAMETER
Write Cycle Time
Chip Select to End of Write
Address Set-up Time
Address Valid to End of Write
Write Pulse Width (/OE=High)
Write Pulse Width(/OE=Low)
Write Recovery Time
Write to Output High-Z
Data to Write Time Overlap
Data Hold from Write Time
End of Write to Output Low-Z
SYMBOL
t
WC
t
CW
t
AS
t
AW
t
WP
t
WP1
t
WR
t
WZ
t
DW
t
DH
t
OW
-10
MIN
10
10
0
7
7
10
0
0
5
0
3
MAX
-
-
-
-
-
-
-
5
-
-
-
MIN
12
12
0
8
8
12
0
0
6
0
3
-12
MAX
-
-
-
-
-
-
-
6
-
-
-
HMS51232J4A
-15
MIN
15
15
0
10
10
14
0
0
7
0
3
MAX
-
-
-
-
-
-
-
7
-
-
-
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
TIMING DIAGRAMS
Please refer to timing diagram chart.
FUNCTIONAL DESCRIPTION
/CE
H
L
L
L
/WE
X*
H
H
L
/OE
X
H
L
X
MODE
Not Select
Output Disable
Read
Write
I/O PIN
High-Z
High-Z
D
OUT
D
IN
SUPPLY CURRENT
I
SB
, I
SB1
I
CC
I
CC
I
CC
Note: X means Don't Care
URL: www.hbe.co.kr
Rev. 1.0 (May / 2003)
5
HANBit Electronics Co.,Ltd.
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