DATA SHEET
MOS INTEGRATED CIRCUIT
µ
PD4632312-X
32M-BIT CMOS MOBILE SPECIFIED RAM
2M-WORD BY 16-BIT
EXTENDED TEMPERATURE OPERATION
Description
The
µ
PD4632312-X is a high speed, low power, 33,554,432 bits (2,097,152 words by 16 bits) CMOS mobile
specified RAM featuring low power static RAM compatible function and pin configuration.
The
µ
PD4632312-X is fabricated with advanced CMOS technology using one-transistor memory cell.
The
µ
PD4632312-X is packed in 77-pin TAPE FBGA.
Features
•
2,097,152 words by 16 bits organization
•
Fast access time: 85, 95, 105 ns (MAX.)
•
Fast page access time: 35, 40, 45 ns (MAX.)
•
Byte data control: /LB (I/O0 - I/O7), /UB (I/O8 - I/O15)
•
Low voltage operation
(B version: V
CC
= 2.6 to 3.1 V,
C version: V
CC
= 2.3 to 2.7 V,
BE version: V
CC
= 2.6 to 3.1 V (Chip), V
CC
Q = 1.65 to 1.95 V (I/O),
CE version: V
CC
= 2.3 to 2.7 V (Chip), V
CC
Q = 1.65 to 1.95 V (I/O))
•
Operating ambient temperature: T
A
= –25 to +85 °C
•
Output Enable input for easy application
•
Chip Enable input: /CS pin
•
Standby Mode input: MODE pin
•
Standby Mode1: Normal standby (Memory cell data hold valid)
•
Standby Mode2: Density of memory cell data hold is variable
Product name
Access
time
ns (MAX.)
Chip
Operating
supply voltage
V
I/O
–
Operating
ambient
At operating
Supply current
At standby
µ
A (MAX.)
Density of data hold
32M bits 16M bits 8M bits 4M bits
35
100
70
60
50
0M bit
10
temperature mA (MAX.)
°C
–25 to +85
µ
PD4632312-BxxX
µ
PD4632312-CxxX
µ
PD4632312-BExxX
µ
PD4632312-CExxX
80
Note
85
95
95
105
2.7 to 3.1
2.6 to 3.1
2.3 to 2.7
2.6 to 3.1 1.65 to 1.95
2.3 to 2.7
Note
Under Development
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. M15406EJ7V0DS00 (7th edition)
Date Published March 2002 NS CP (K)
Printed in Japan
The mark
5
shows major revised points.
©
2001
µ
PD4632312-X
Pin Configuration
/xxx indicates active low signal.
77-pin TAPE FBGA (12 x 7)
[
µ
PD4632312F9-BxxX-BT3]
[
µ
PD4632312F9-CxxX-BT3]
[
µ
PD4632312F9-BExxX-BT3]
[
µ
PD4632312F9-CExxX-BT3]
Top View
Bottom View
8
7
6
5
4
3
2
1
A B C D E F G H J K L M N P
P N M L K J H G F E D C B A
Top View
A
8
7
6
5
4
3
2
1
NC
NC
NC
NC
NC
NC
B
NC
NC
C
NC
NC
A11
A8
/WE
NC
/LB
A7
D
E
A15
A12
A19
MODE
NC
/UB
A6
A3
F
NC
A13
A9
A20
NC
A18
A5
A2
A17
A4
A1
I/O1
GND
A0
G
NC
A14
A10
H
A16
NC
I/O6
J
NC
I/O15
I/O13
I/O4
I/O3
I/O9
/OE
NC
K
GND
I/O7
I/O12
V
CC
NC
I/O10
I/O0
/CS
I/O14
I/O5
V
CC
Q
I/O11
I/O2
I/O8
NC
NC
NC
NC
NC
NC
L
M
NC
NC
N
NC
NC
P
NC
A0 - A20
I/O0 - I/O15
/CS
MODE
/WE
/OE
: Address inputs
: Data inputs / outputs
: Chip Select
: Standby mode
: Write enable
: Output enable
/LB, /UB
V
CC
V
CC
Q
GND
NC
Note2
Note1
: Byte data select
: Power supply
: Input / Output power supply
: Ground
: No Connection
Notes 1.
B, C version : NC
2.
Some signals can be applied because this pin is not internally connected.
Remark
Refer to
Package Drawing
for the index mark.
Data Sheet M15406EJ7V0DS
3
µ
PD4632312-X
Truth Table
/CS
MODE
/OE
×
×
H
L
/WE
×
×
H
H
/LB
×
×
×
L
L
H
H
×
L
L
L
H
H
/UB
×
×
×
L
H
L
H
L
H
L
H
Mode
I/O0 - I/O7
H
H
L
H
L
H
Not selected (Standby Mode 1)
Not selected (Standby Mode 2)
Note1
Output disable
Word read
Lower byte read
Upper byte read
Output disable
Word write
Lower byte write
Upper byte write
Write-abort
Note2
High impedance
High impedance
High impedance
D
OUT
D
OUT
High impedance
High impedance
D
IN
D
IN
High impedance
High impedance
I/O
I/O8 - I/O15
High impedance
High impedance
High impedance
D
OUT
High impedance
D
OUT
High impedance
D
IN
High impedance
D
IN
High impedance
Supply
current
I
SB1
I
SB2
I
CCA
Caution MODE pin must be fixed to High except Standby Mode 2.
Notes 1.
During normal operation, make /CS = V
IH
, MODE = V
IL
, the device enters the Standby Mode 2. However,
make /CS = V
IH
or V
IL
, and MODE = V
IL
at power application, the device enters the Standby Mode 2.
2.
Write data can not be written to the memory cell.
Remark
×:
V
IH
or V
IL
, H: V
IH
, L: V
IL
,
Data Sheet M15406EJ7V0DS
5