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Semiconductor
MR27V852D
524,288-Word x 16-Bit or 1,048,576-Word x 8-Bit
8-Word x 16-Bit or 16-Word x 8-Bit Page Mode One Time PROM
DESCRIPTION
1A
The MR27V852D is a 8Mbit electrically Programmable Read-Only Memory with page mode. Its
configuration can be electrically switched between 524,288 word x 16bit and 1,048,576 word x 8bit.
The MR27V852D operates on a single +3.3V power supply and is TTL compatible. The MR27V852D
provides Page mode which can greatly reduce the read access time. Since the MR27V852D
operates asynchronously , external clocks are not required , making this device easy-to-use. The
MR27V852D 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 42-pin DIP , 44-pin
SOP or 44-pin TSOP packages.
FEATURES
• 524,288 word x 16bit / 1,048,576 word x 8bit electrically switchable configuration
• Single +3.3V power supply
• Access time 80ns
Page mode access time 30ns
• Input / Output TTL compatible
• Three-state output
• Packages
42-pin plastic DIP (DIP42-P-600-2.54)
(Product name : MR27V852DRA)
44-pin plastic SOP (SOP44-P-600-1.27-K)
(Product name : MR27V852DMA)
44-pin plastic TSOP (TSOP II 44-P-400-0.80-K) (Product name : MR27V852DTP)
November 1999
1/10
MR27V852D
BLOCK DIAGRAM
A-1
X8/X16 Switch
CE
OE
BYTE/V
PP
PGM
CE
OE
Column Decoder
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
Row Decoder
Memory Matrix
Address Buffer
524,288X16-Bit or 1,048,576X8-Bit
Multiplexer & Page Data Latch
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
PROGRAM
PROGRAM INHIBIT
PROGRAM VERIFY
* : Don't Care
CE
L
L
L
H
L
H
H
OE BYTE/V
PP
L
L
H
*
H
H
L
9.75V
4.0V
H
L
H
L
H
L
3.3V
D
OUT
V
CC
D0 - D7
D8 - D14
D
OUT
Hi-Z
Hi-Z
*
Hi-Z
*
D
IN
Hi-Z
D
OUT
D15/A-1
L/H
3/10
MR27V852D
ABSOLUTE MAXIMUM RATINGS
Parameter
Operating temperature under bias
Storage temperature
Input voltage
Output voltage
Power supply voltage
Program power supply voltage
Power dissipation per package
Symbol
Topr
T
stg
V
I
V
O
V
CC
V
PP
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
-0.5 to 11.5
1.0
Unit
°C
°C
V
V
V
V
W
RECOMMENDED OPERATING CONDITIONS FOR READ
(Ta=0 to 70
°C)
Parameter
V
CC
power supply voltage
V
PP
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
PP
V
IH
V
IL
V
CC
=3.0V-3.6V
Condition
Min.
3.0
-0.5
2.2
-0.5**
Typ.
-
-
-
-
Max.
3.6
V
CC
+0.5
V
CC
+0.5*
0.6
Unit
V
V
V
V
4/10
MR27V852D
ELECTRICAL CHARACTERISTICS (Read operation)
DC Characteristics
(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)
V
PP
power supply current
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.
AC Characteristics
(V
CC
=3.3V
±
0.3V, Ta=0 to 70°C)
Parameter
Address access cycle time
Address access time
Page access cycle time
Page access time
CE access time
OE access time
Output disable time
Output hold time
Symbol
T
C
T
ACC
T
PC
T
PAC
T
CE
T
OE
T
CHZ
T
OHZ
T
OH
Condition
-
CE=OE=V
IL
-
-
OE=V
IL
CE=V
IL
OE=V
IL
CE=V
IL
CE=OE=V
IL
Min.
80
-
30
-
-
-
0
0
0
Max.
-
80
-
30
80
30
30
25
-
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
Symbol
I
LI
I
LO
I
CS1
I
CS2
I
CCA
I
PP
V
IH
V
IL
V
OH
V
OL
tc=80ns
V
PP
=V
CC
-
-
I
OH
=-400µA
I
OL
=2.1mA
Condition
V
I
=0 to Vcc
V
O
=0 to Vcc
CE=V
CC
CE=V
IH
CE=V
IL ,
OE=V
IH
Min.
-
-
-
-
-
-
2.2
-0.5**
2.4
-
Typ.
-
-
-
-
-
-
-
-
-
Max.
10
10
50
1
80
10
V
CC
+0.5*
0.6
-
0.4
Unit
µA
µA
µA
mA
mA
µA
V
V
V
V
Measurement conditions
Input signal level
Input timing reference level
Output load
Output timing reference level
0V/3V
0.8V/2.0V
100pF
0.8V/2.0V
2.08V
800ohms
Output
100pF
5/10
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