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Semiconductor
MR27V6452D
4,194,304-Word x 16-Bit or 8,388,608-Word x 8-Bit
8-Word x 16-Bit or 16-Word x 8-Bit Page Mode One Time PROM
DESCRIPTION
The MR27V6452D is a 64Mbit electrically Programmable Read-Only Memory with page mode. Its
configuration can be electrically switched between 4,194,304 word x 16bit and 8,388,608 word x 8
bit. The MR27V6452D operates on a single +3.3V power supply and is TTL compatible. The MR27
V6452D provides Page mode which can greatly reduce the read access time. Since the MR27V6452
D operates asynchronously , external clocks are not required , making this device easy-to-use. The
MR27V6452D 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 44-pin SOP package.
FEATURES
• 4,194,304 word x 16bit / 8,388,608 word x 8bit electrically switchable configuration
• Single +3.3V power supply
• Access time 120ns
Page mode access time 30ns
• Input / Output TTL compatible
• Three-state output
• Package
44-pin plastic SOP (SOP44-P-600-1.27-K)
1A
June 1999
1
PIN CONFIGURATION (TOP VIEW)
MR27V6452D
A21
A18
A17
A7
A6
A5
A4
A3
A2
A1
A0
CE
V
SS
OE
D0
D8
D1
D9
D2
D10
D3
D11
10
11
12
13
14
15
16
17
18
19
20
21
A20
1
2
3
4
5
6
7
8
9
44
A19
43
A8
42
A9
41
A10
40
A11
39
A12
38
A13
37
A14
36
A15
35
A16
34
BYTE/Vpp
33
V
32
SS
D15/A-1
31
D7
30
D14
29
D6
28
D13
27
D5
26
D12
25
D4
24
V
2322
CC
44-pin SOP
PIN NAMES
FUNCTIONS
D15/A-1 Data output / Address input
A0-A21 Address input
D0-D14 Data output
CE
OE
V
CC
V
SS
BYTE/V
PP
Chip enable
Output enable
Power supply voltage
GND
Mode switch / Program power supply voltage
2
BLOCK DIAGRAM
MR27V6452D
A-1
X8/X16 Switch
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
Address Buffer
CE BYTE/V
OE
CE PGMOE
Memory Matrix
Row Decoder
4,194,304X16-Bit or 8,388,608X8-Bit
Multiplexer & Page Data Latch
Output Buffer
Column Decoder
D0
D1D2D3D4D5D6D7D8D9
PP
D10
D11
D12
D13
D14
D15
FUNCTION TABLE
MODE
READ (16-Bit)
READ (8-Bit)
OUTPUT DISABLE
STAND-BY
PROGRAM
PROGRAM INHIBIT
PROGRAM VERIFY
* : Don't Care
In 8-bit output mode, these pins are
three-stated and pin D15 functions
as the A-1 address pin.
CE OE
LL
L
L
L
H
H
*
BYTE/V
H
L
H
L
H
L
PP
V
CC
3.3V
D
OUT
D8 - D14D0 - D7
D
Hi-Z
Hi-Z
Hi-Z
LH
H H Hi-Z
HL
9.75V
4.0V
D
OUT
D
OUT
D15/A-1
L/H
*
*
IN
3
ABSOLUTE MAXIMUM RATINGS
MR27V6452D
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
RECOMMENDED OPERATING CONDITIONS FOR READ
Parameter Symbol
VCC power supply voltage
VPP power supply voltage
Input "H" level
Input "L" level
Voltage is relative to Vss
V
CC
V
PP
V
IH
V
IL
Condition
VCC=3.0V-3.6V
0 to 70
-55 to 125
+ 0.5
CC
(Ta=0 to 70°C)
Min. Max.
3.0
-0.5
Typ.
-
-
-
-
3.6
+0.5
V
CC
+0.52.2
V
CC
0.6-0.5
UnitValueCondition
°C
°C
V-0.5 to V
V-0.5 to VCC + 0.5
V-0.5 to 5
V-0.5 to 11.5
W1.0
Unit
V
V
V
V
4
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