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Datasheet: M14464EJ5V0DS00 (NEC)

 

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1999
MOS INTEGRATED CIRCUIT



PD444012A-X
4M-BIT CMOS STATIC RAM
256K-WORD BY 16-BIT
EXTENDED TEMPERATURE OPERATION
DATA SHEET
Document No. M14464EJ5V0DS00 (5th edition)
Date Published July 2001 NS CP (K)
Printed in Japan
The mark
5
shows major revised points.
Description
The
PD444012A-X is a high speed, low power, 4,194,304 bits (262,144 words by 16 bits) CMOS static RAM.
The
PD444012A-X has two chip enable pins (/CE1, CE2) to extend the capacity.
The
PD444012A-X is packed in 48-pin PLASTIC TSOP (I) (Normal bent).
Features
262,144 words by 16 bits organization
Fast access time: 50, 55, 70, 85, 100, 120 ns (MAX.)
Byte data control: /LB (I/O1 - I/O8), /UB (I/O9 - I/O16)
Low voltage operation
(B version: V
CC
= 2.7 to 3.6 V, C version: V
CC
= 2.2 to 3.6 V)
Low V
CC
data retention: 1.0 V (MIN.)
Operating ambient temperature: T
A
= 25 to +85C
Output Enable input for easy application
Two Chip Enable inputs: /CE1, CE2
Part number
Access time
Operating supply
Operating ambient
Supply current
ns (MAX.)
Voltage
temperature
At operating
At standby At data retention
V
C
mA (MAX.)
A (MAX.)
A (MAX.)
PD444012A-BxxX
50
Note 1
, 55, 70, 85, 100
2.7 to 3.6
-
25 to +85
40
Note 2
7
3
45
Note 3
50
Note 4
PD444012A-CxxX
70, 85, 100, 120
2.2 to 3.6
40
Notes 1. V
CC
3.0 V
2. Cycle time
70 ns
3. Cycle time = 55 ns
4. Cycle time = 50 ns
5
5
5
5
5
5
5
Data Sheet M14464EJ5V0DS
2



PD444012A-X
Ordering Information
Part number
Package
Access time
Operating
Operating
Remark
ns (MAX.)
supply voltage
temperature
V
C
PD444012AGY-B55X-MJH
48-pin PLASTIC TSOP (I)
55, 50
Note
2.7 to 3.6
-
25 to +85
B version
PD444012AGY-B70X-MJH
(12
18) (Normal bent)
70
PD444012AGY-B85X-MJH
85
PD444012AGY-B10X-MJH
100
PD444012AGY-C70X-MJH
70
2.2 to 3.6
C version
PD444012AGY-C85X-MJH
85
PD444012AGY-C10X-MJH
100
PD444012AGY-C12X-MJH
120
Note V
CC
3.0 V
5
Data Sheet M14464EJ5V0DS
3



PD444012A-X
Pin Configuration (Marking Side)
/xxx indicates active low signal.
48-pin PLASTIC TSOP (I) (12



18) (Normal bent)
[



PD444012AGY-BxxX-MJH ]
[



PD444012AGY-CxxX-MJH ]
A15
A14
A13
A12
A11
A10
A9
A8
NC
NC
/WE
CE2
NC
/UB
/LB
NC
A17
A7
A6
A5
A4
A3
A2
A1
A16
NC
GND
I/O16
I/O8
I/O15
I/O7
I/O14
I/O6
I/O13
I/O5
V
CC
I/O12
I/O4
I/O11
I/O3
I/O10
I/O2
I/O9
I/O1
/OE
GND
/CE1
A0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
A0 - A17
: Address inputs
I/O1 - I/O16 : Data inputs / outputs
/CE1, CE2
: Chip Enable 1, 2
/WE
: Write Enable
/OE
: Output Enable
/LB, /UB
: Byte data select
V
CC
: Power supply
GND
: Ground
NC
: No Connection
Remark Refer to Package Drawing for the 1-pin index mark.
5
Data Sheet M14464EJ5V0DS
4



PD444012A-X
Block Diagram
Address buffer
Address
buffer
Row
decoder
Memory cell array
4,194,304 bits
Input data
controller
A0
A17
I/O9 - I/O16
/CE1
/WE
/OE
CE2
/UB
/LB
Output data
controller
I/O1 - I/O8
V
CC
GND
Sense amplifier /
Switching circuit
Column decoder
Truth Table
/CE1
CE2
/OE
/WE
/LB
/UB
Mode
I/O
Supply current
I/O1 - I/O8
I/O9 - I/O16
H
Not selected
High impedance
High impedance
I
SB
L
L
H
H
H
Output disable
High impedance
High impedance
I
CCA
L
H
L
L
Word read
D
OUT
D
OUT
L
H
Lower byte read
D
OUT
High impedance
H
L
Upper byte read
High impedance
D
OUT
L
L
L
Word write
D
IN
D
IN
L
H
Lower byte write
D
IN
High impedance
H
L
Upper byte write
High impedance
D
IN
H
H
Not selected
High impedance
High impedance
I
SB
Remark
: V
IH
or V
IL
Data Sheet M14464EJ5V0DS
5



PD444012A-X
Electrical Specifications
Absolute Maximum Ratings
Parameter
Symbol
Condition
Rating
Unit
Supply voltage
V
CC
0.5
Note
to +4.0
V
Input / Output voltage
V
T
0.5
Note
to V
CC
+ 0.4 (4.0 V MAX.)
V
Operating ambient temperature
T
A
25 to +85
C
Storage temperature
T
stg
55 to +125
C
Note 3.0 V (MIN.) (Pulse width : 30 ns)
Caution Exposing the device to stress above those listed in Absolute Maximum Rating could cause
permanent damage. The device is not meant to be operated under conditions outside the limits
described in the operational section of this specification. Exposure to Absolute Maximum Rating
conditions for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Symbol
Condition
PD444012A-BxxX
PD444012A-CxxX
Unit
MIN.
MAX.
MIN.
MAX.
Supply voltage
V
CC
2.7
3.6
2.2
3.6
V
High level input voltage
V
IH
2.7 V
V
CC
3.6 V
2.4
V
CC
+0.4
2.4
V
CC
+0.4
V
2.2 V
V
CC
< 2.7 V
2.0
V
CC
+0.3
Low level input voltage
V
IL
0.3
Note
+0.5
0.3
Note
+0.3
V
Operating ambient temperature
T
A
25
+85
25
+85
C
Note 1.5 V (MIN.) (Pulse width: 30 ns)
Capacitance (T
A
= 25



C, f = 1 MHz)
Parameter
Symbol
Test condition
MIN.
TYP.
MAX.
Unit
Input capacitance
C
IN
V
IN
= 0 V
8
pF
Input / Output capacitance
C
I/O
V
I/O
= 0 V
10
pF
Remarks 1. V
IN
: Input voltage
V
I/O
: Input / Output voltage
2. These parameters are not 100% tested.
5
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