¡
Semiconductor
MR27V402D
262,144-Word x 16-Bit or 524,288-Word x 8-Bit
Production Programmed Read Only Memory (P2ROM)
1A
DESCRIPTION
The MR27V402D is a 4Mbit Production Programmed Read-Only Memory (P2ROM) whose
configuration can be electrically switched between 262,144 word x 16bit and 524,288 word x 8bit.
The MR27V402D operates on a single +3V-3.3V power supply and is TTL compatible. Since the
MR27V402D operates asynchronously , external clocks are not required , making this device easy-
to-use. The MR27V402D is suitable as large-capacity fixed memory for microcomputers and data
terminals. It is manufactured using a CMOS double silicon gate technology and is offered in 40-pin
DIP, 40-pin SOP or 44-pin TSOP packages.
FEATURES
• 262,144 word x 16bit / 524,288 word x 8bit electrically switchable configuration
• Single +3V-3.3V power supply
• Access time
80ns access time (Vcc=+3V)
70ns access time (Vcc=+3.3V)
• Input / Output TTL compatible
• Three-state output
• Packages
40-pin plastic DIP (DIP40-P-600-2.54)
(Product name : MR27V402D-xxRP)
40-pin plastic SOP (SOP40-P-525-1.27-K)
(Product name : MR27V402D-xxMP)
44-pin plastic TSOP (TSOP II 44-P-400-0.80-K) (Product name : MR27V402D-xxTP)
November 1999
1/8
MR27V402D
BLOCK DIAGRAM
A-1
X8/X16 Switch
CE
OE
BYTE
CE
OE
Column Decoder
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
Row Decoder
Memory Matrix
Address Buffer
262,144X16-Bit or 524,288X8-Bit
Multiplexer
Output Buffer
D0
D1
D2
D3
D4
D5
D6
D7
D8
D10
D9
D12
D14
D15
D11
D13
In 8-bit output mode, these pins are
three-stated and pin D15 functions
as the A-1 address pin.
FUNCTION TABLE
MODE
READ (16-Bit)
READ (8-Bit)
OUTPUT DISABLE
STAND-BY
*: Don't Care
CE
L
L
L
H
OE
L
L
H
*
BYTE
H
L
H
L
H
L
3.0V
to
3.3V
D
OUT
V
CC
D0 - D7
D8 - D14
D
OUT
Hi-Z
Hi-Z
*
Hi-Z
*
D15/A-1
L/H
3/8
MR27V402D
ABSOLUTE MAXIMUM RATINGS
Parameter
Operating temperature under bias
Storage temperature
Input voltage
Output voltage
Power supply voltage
Power dissipation per package
Symbol
Topr
T
stg
V
I
V
O
V
CC
P
D
-
relative to V
SS
Condition
-
Value
0 to 70
-55 to 125
-0.5 to V
CC
+ 0.5
-0.5 to V
CC
+0.5
-0.5 to 5
1.0
Unit
°C
°C
V
V
V
W
RECOMMENDED OPERATING CONDITIONS
(Ta=0 to 70
°C)
Parameter
V
CC
power supply voltage
Input "H" level
Input "L" level
Voltage is relative to Vss
* : Vcc+1.5V (Max.) when pulse width of overshoot is less than 10nS.
** : -1.5V (Min.) when pulse width of undershoot is less than 10nS.
Symbol
V
CC
V
IH
V
IL
V
CC
=2.7V-3.6V
Condition
Min.
2.7
2.2
-0.5**
Typ.
-
-
-
Max.
3.6
V
CC
+0.5*
0.6
Unit
V
V
V
4/8
MR27V402D
ELECTRICAL CHARACTERISTICS (Read operation)
DC Characteristics 1
(V
CC
=3V
±
0.3V, Ta=0 to 70
°C
)
Parameter
Input leakage current
Output leakage current
V
CC
power supply current
(Standby)
V
CC
power supply current (Read)
Input "H" level
Input "L" level
Output "H" level
Output "L" level
Voltage is relative to Vss
* : Vcc+1.5V (Max.) when pulse width of overshoot is less than 10nS.
** : -1.5V (Min.) when pulse width of undershoot is less than 10nS.
Symbol
I
LI
I
LO
I
CCSC
I
CCST
I
CCA
V
IH
V
IL
V
OH
V
OL
Condition
V
I
=0 to Vcc
V
O
=0 to Vcc
CE=V
CC
CE=V
IH
CE=V
IL,
OE=V
IH
tc=80ns
-
-
I
OH
=-400uA
I
OL
=2.1mA
Min.
-
-
-
-
-
2.2
-0.5**
2.4
-
Typ.
-
-
-
-
-
-
-
-
-
Max.
10
10
50
1
25
V
CC
+0.5*
0.6
-
0.4
Unit
µA
µA
µA
mA
mA
V
V
V
V
DC Characteristics 2
(V
CC
=3.3V
±
0.3V, Ta=0 to 70
°C
)
Parameter
Input leakage current
Output leakage current
V
CC
power supply current
(Standby)
V
CC
power supply current (Read)
Input "H" level
Input "L" level
Output "H" level
Output "L" level
Voltage is relative to Vss
* : Vcc+1.5V (Max.) when pulse width of overshoot is less than 10nS.
** : -1.5V (Min.) when pulse width of undershoot is less than 10nS.
Symbol
I
LI
I
LO
I
CCSC
I
CCST
I
CCA
V
IH
V
IL
V
OH
V
OL
Condition
V
I
=0 to Vcc
V
O
=0 to Vcc
CE=V
CC
CE=V
IH
CE=V
IL,
OE=V
IH
tc=70ns
-
-
I
OH
=-400uA
I
OL
=2.1mA
Min.
-
-
-
-
-
2.2
-0.5**
2.4
-
Typ.
-
-
-
-
-
-
-
-
-
Max.
10
10
50
1
30
V
CC
+0.5*
0.6
-
0.4
Unit
µA
µA
µA
mA
mA
V
V
V
V
5/8
京公网安备 11010802033920号
EEWORLD
