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¡
The MR27V3255D is a 32Mbit electrically Programmable Read-Only Memory with page mode. Its
configuration can be electrically switched between 1,048,576 double word x 32bit and 2,097,152
word x 16bit. The MR27V3255D operates on a single +3.3V power supply and is TTL compatible.
The MR27V3255D provides Page mode which can greatly reduce the read access time. Since the
MR27V3255D operates asynchronously , external clocks are not required , making this device easyto-use. The MR27V3255D 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 70-pin
SSOP or 70-pin TSOP packages.
1A
MR27V3255D
1,048,576-Double Word x 32-Bit or 2,097,152-Word x 16-Bit
8-Double Word x 32-Bit or 16-Word x 16-Bit Page Mode One Time PROM
DESCRIPTION
FEATURES
• 1,048,576 double word x 32bit / 2,097,152 word x 16bit electrically switchable configuration
• Single +3.3V power supply
• Access time 80ns
Page mode access time 25ns
• Input / Output TTL compatible
• Three-state output
• Packages
70-pin plastic SSOP (SSOP70-P-500-0.80-K) (Product name : MR27V3255DMB)
70-pin plastic TSOP (TSOP II 70-P-400-0.65-K) (Product name : MR27V3255DTA)
Semiconductor
November 1999
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PIN CONFIGURATION (TOP VIEW)
MR27V3255D
PIN NAMES
FUNCTIONS
D31/A-1 Data output / Address input
A0 - A19 Address input
D0 - D30 Data output
CE
OE
Output enable
V
CC
Power supply voltage
WORD
Mode switch
Chip enable
V
SS
GND
56
A3
D28
D12
D11
D26
D10
V
SS
V
CC
D25
D24
D8
V
CC
A19
A18
A17
A16
A15
A14
A13
D27
55
54
53
4
5
6
7
52
51
50
49
8
9
10
11
48
47
46
45
12
13
14
15
44
43
42
41
16
17
18
19
40
39
38
37
20
21
22
23
36
24
D13
A4
A5
D0
D16
D1
D17
V
SS
V
CC
D2
D18
D3
D19
D4
D20
D5
D21
V
SS
V
CC
D6
59
A0
V
CC
58
1
2
V
SS
A1
A2
57
3
70-pin SSOP , TSOP (II)
D29
60
D14
61
D30
62
D15
63
D31/A-1
64
V
SS
65
CE
66
OE
67
WORD
68
NC
69
NC
70
V
PP
25
D22
26
D7
27
D23
28
V
SS
29
A6
30
A7
31
A8
32
A9
33
A10
34
A11
35
A12
NC
Non connection
V
PP
Program power supply voltage
V
CC
D9
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* : Don't Care (H or L or Open)
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BLOCK DIAGRAM
FUNCTION TABLE
MR27V3255D
STAND-BY
OUTPUT DISABLE
READ (16-Bit)
READ (32-Bit)
MODE
D31/A-1
CE OE
V
PP
LL
D
OUT
L
L
L/H
LH
L
*
H
*
H
L
3.3V
D16 - D30D0 - D15
H
L
D
OUT
Hi-Z
H
Hi-Z
*
Hi-Z
PROGRAM
LH
D
IN
PROGRAM INHIBIT
H H Hi-Z
PROGRAM VERIFY
HL
D
OUT
L
4.0V
WORD
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
D0
CE WORDOE
CE PGMOE
Address Buffer
Row Decoder
Column Decoder
Memory Matrix
Multiplexer & Page Data Latch
Output Buffer
D1
X16/X32 Switch
A-1
In 16-bit output mode, these pins are
three-stated and pin D31 functions
as the A-1 address pin.
1,048,576X32-Bit or 2,097,152X16-Bit
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
D17
D18
D19
D20
D21
D22
D23
D24
D25
D26
D27
D28
D29
D31
D30
V
CC
9.75V
*
Hi-Z
Hi-Z
L/H
L/H
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Operating temperature under bias
Storage temperature
Input voltage
Output voltage
Power supply voltage
Program power supply voltage
Power dissipation per package
Parameter
Symbol
Topr
UnitValueCondition
RECOMMENDED OPERATING CONDITIONS FOR READ
VCC power supply voltage
VPP power supply voltage
Input "H" level
Input "L" level
Parameter Symbol
V
CC
Unit
3.6
Typ.
3.0
Condition
T
stg
V
I
V
O
V
CC
V
PP
P
D
0 to 70
-55 to 125
V-0.5 to V
CC
+ 0.5
V-0.5 to VCC + 0.5
V-0.5 to 5
V-0.5 to 11.5
W1.0
-
relative to V
SS
(Ta=0 to 70°C)
Min. Max.
V
V
CC
+0.5
-0.5
-
V
V
CC
+0.5*2.2
-
V
0.6-0.5**
-
V
V
PP
V
IH
V
IL
VCC=3.0V-3.6V
Voltage is relative to Vss
ABSOLUTE MAXIMUM RATINGS
-
-
MR27V3255D
°C
°C
* : 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.
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Output
0.4
-
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ELECTRICAL CHARACTERISTICS (Read operation)
DC Characteristics
Input leakage current
Output leakage current
V
CC
power supply current
(Standby)
V
CC
power supply current
(Read)
V
PP
power supply current
Parameter
Symbol
UnitCondition
(V
CC
=3.3V±0.3V, Ta=0 to 70°C)
Input "H" level
Input "L" level
Output "H" level
Output "L" level
Voltage is relative to Vss
10
Typ.
-
Min. Max.
I
LO
I
CS1
I
CS2
I
CCA
µA
10
-
µA
50
-
µA
-
CE=V
CC
1
-
CE=V
IH
100
-mA
tc=80ns
-
-
I
PP
V
IH
V
IL
V
OH
V
OL
10
µA
V
PP=VCC
VCC+0.5*
2.2
V
-
0.6
-0.5** V
-
-2.4
V
I
OH
=-400µA
-
VI
OL
=2.1mA
-
-
-
CE=V
IL ,
OE=V
IH
VI=0 to Vcc
VO=0 to Vcc
MR27V3255D
mA
-
800ohms
100pF
2.08V
AC Characteristics
Address access time
Parameter
Symbol
T
ACC
UnitCondition
(V
CC
=3.3V±0.3V, Ta=0 to 70°C)
Min. Max.
ns
CE=OE=V
IL
80
Address access cycle time
T
C
80
ns
-
-
0V/3V
0.8V/2.0V
100pF
0.8V/2.0V
Measurement conditions
Input signal level
Input timing reference level
Output load
Output timing reference level
-
ns
CE access time
OE access time
Output disable time
-
T
CE
-
OE=V
IL
25
-
ns
CE=V
IL
25
0
ns
OE=V
IL
20
0
ns
-
0
T
OE
T
OH
CE=V
IL
CE=OE=V
IL
Output hold time
80
T
CHZ
T
OHZ
25
-
25
ns
ns
ns
Page access cycle time
Page access time
T
PC
T
PAC
-
-
I
LI
* : 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.
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t
OHZ
A0 - A2 (X32 mode)
A-1 - A2 (X16 mode)
ADDRESS
t
OH
t
CE
t
CHZ
t
OE
t
OHZ
t
ACC
CE
OE
Valid Data
Hi-ZHi-Z
DOUT
t
OH
t
CE
t
CHZ
t
OE
t
ACC
CE
OE
Hi-Z
Hi-Z
TIMING CHART
NORMAL MODE READ CYCLE
PAGE MODE READ CYCLE
t
PAC
t
PAC
DOUT
t
C
t
C
A3 - A19
t
PC
t
PC
MR27V3255D
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1
AAAA
5555
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ELECTRICAL CHARACTERISTICS (Programming operation)
DC Characteristics
Input leakage current
V
PP
power supply current (Program)
V
CC
power supply current
Parameter
Symbol
I
LI
Unit
10
Typ.
-
Condition
(Ta=25°C±5°C)
Min. Max.
Input "L" level
I
PP2
I
CC
V
IH
V
IL
µA
-
V
I=VCC
+0.5V
50
-
mA
-
CE=V
IL
80
-
mA
-VCC+0.5
3.0
V
-
0.8
-0.5
V
-
-
9.75
-
Voltage is relative to Vss
Input "H" level
V
OH
-
2.4
VIOH=-400µA
-
Output "H" level
V
OL
0.45
-
V
I
OL
=2.1mA
-
Output "L" level
V
PP
10.09.5
V
-
Program voltage
V
CC
power supply voltage
V
CC
4.1
3.9
V
4.0
-
MR27V3255D
Pin Check Function
Pin Check Function is to check contact between each device-pin and each socket-lead with EPROM
programmer.
Setting up address as the following condition call the preprogrammed codes on device outputs.
A-1
(Vcc=3.3V
±0.3V,CE=OE=V
IL
,WORD=V
IL
,Ta=25°C±5°C)
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
0
1
0
1
0
1
0
1
0
VH*
1
0
1
0101
1
10
1
01010
1
VH*
0
10
1
010
0
DATA
* :VH=8V
±0.25V
A19
0
1
0
0
1
PA20PA19PA18PA17PA16PA15PA14PA13PA12PA11
PA10PA9PA8PA7PA6PA5PA4PA3PA2PA1PA0
AC Characteristics
Address set-up time
OE set-up time
Data set-up time
Parameter
Symbol
T
AS
Unit
-
Typ.
100
Condition
Min. Max.
Data hold time
T
OES
T
DS
T
AH
T
DH
ns
-
-
2
µs
-
-
100
ns
--
-
2
µs
-
-
100 ns
-
-
-
Address hold time
T
OHZ
100
0
ns-
Output float delay from OE
T
VS
-
2
µs
-
V
PP
voltage set-up time
Program pulse width
T
PW
119
µs
10
-
Data valid from OE
T
OE
100
-
ns
--
-
-
-
-
(V
cc
=4.0V±0.1V,Vpp=9.75V±0.25V,Ta=25°C±5°C)
ns
Address hold from OE high
T
AHO
-
0
--
FFFF
Other conditions
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Consecutive Programming Waveforms
A-1 - A19
D0 - D15
V
PP
OE
CE
Din Din
High
t
AS
t
AH
t
PW
t
DS
t
DH
t
VS
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MR27V3255D
Consecutive Program Verify Waveforms
A-1 - A19
D0 - D15
OE
CE
Dout
High
t
ACC
t
AHO
t
OE
t
OHZ
Dout
V
PP
9.75V
Page 9
Program and Program Verify Cycle Waveforms
A-1 - A19
D0 - D15
OE
CE
Din
t
AS
t
DH
Dout
V
PP
9.75V
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MR27V3255D
PIN Capacitance
Input
Parameter
C
IN
Unit
8
Typ.
-
(VCC=3.3V, Ta=25°C, f=1MHz)
Min. Max.
pF
-
VI=0V
Output
C
OUT
10
--
V
O
=0V
Symbol
Condition
t
PW
t
OES
t
OE
t
OHZ
t
DS
t
OHZ
t
AHO
Page 10
Bad insertion
Increment Address
Bad insertion
YES
Program 10µs
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Programming / Verify Flow Chart
MR27V3255D
VCC=4.0V
VPP=9.75V
X=0
YES
PASS
NO
NG
NO
NG
PASS
X=2?
X=X+1
YES
NO
VCC=3.0V
VPP=3.0V
Programming
Pin Check
NO
OK
V
CC
=3.6V
V
PP
=3.6V
NG
PASS
VCC=3.0V
V
PP
=3.0V
NG
PASS
Verify
NO
OK
Start
Start
Pin Check
Last Address ?
Increment Address
Address = First location
Program 10µs
Verify (One Byte)
Last Address ?
Verify (One Byte)
Device Passed Device Failed
Device Passed Device Failed
Verify (One Byte)
Verify (One Byte)
Address = First location
Address = First location
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