Page 1
查询MR27V3255D供应商
¡
Semiconductor
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
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.
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)
1A
November 1999
1/10
Page 2
PIN CONFIGURATION (TOP VIEW)
V
A0
A1
A2
A3
A4
A5
V
CC
D0
D16
D1
D17
V
SS
V
CC
D2
D18
D3
D19
D4
D20
D5
D21
V
SS
V
CC
D6
D22
D7
D23
V
SS
A6
A7
A8
A9
A10
A11
A12
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
PP
NC
NC
WORD
OE
CE
V
SS
D31/A-1
D15
D30
D14
V
SS
V
CC
D29
D13
D28
D12
D27
D11
D26
D10
V
SS
V
CC
D25
D9
D24
D8
V
CC
A19
A18
A17
A16
A15
A14
A13
MR27V3255D
PIN NAMES
FUNCTIONS
D31/A-1 Data output / Address input
A0 - A19 Address input
D0 - D30 Data output
CE
OE
V
CC
V
SS
WORD
V
PP
NC
Chip enable
Output enable
Power supply voltage
GND
Mode switch
Program power supply voltage
Non connection
70-pin SSOP , TSOP (II)
2/10
Page 3
BLOCK DIAGRAM
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
Address Buffer
A-1
X16/X32 Switch
CE WORDOE
CE PGMOE
Row Decoder
Column Decoder
MR27V3255D
Memory Matrix
1,048,576X32-Bit or 2,097,152X16-Bit
Multiplexer & Page Data Latch
Output Buffer
FUNCTION TABLE
MODE
READ (32-Bit)
READ (16-Bit)
OUTPUT DISABLE
STAND-BY
PROGRAM
PROGRAM INHIBIT
PROGRAM VERIFY
* : Don't Care (H or L or Open)
D0
D2
D4
D6
D8
D10
D12
D14
D16
D18
D20
D22
D24
D1
D3
D5
D7
D9
D11
D13
D15
D17
D19
D21
D23
In 16-bit output mode, these pins are
three-stated and pin D31 functions
as the A-1 address pin.
CE OE
LL
L
L
LH
H
*
WORD
H
L
H
L
H
L
V
PP
LH
H H Hi-Z
L
9.75V
HL
V
CC
D16 - D30D0 - D15
D
D
OUT
3.3V
*
Hi-Z
Hi-Z
Hi-Z
D
IN
Hi-Z
4.0V
D
OUT
Hi-Z
D25
OUT
D26
D27
D28
D29
D30
D31
D31/A-1
L/H
*
*
L/H
L/H
3/10
Page 4
ABSOLUTE MAXIMUM RATINGS
MR27V3255D
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
V
CC
V
PP
V
IH
V
IL
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.
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
+0.5*2.2
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
4/10
Page 5
ELECTRICAL CHARACTERISTICS (Read operation)
DC Characteristics
Parameter
Input leakage current
Output leakage current
V
power supply current
CC
(Standby)
V
power supply current
CC
(Read)
V
power supply current
PP
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
CS1
I
CS2
I
CCA
I
PP
V
IH
V
IL
V
OH
V
OL
VO=0 to Vcc
CE=V
IL ,
tc=80ns
VI=0 to Vcc
CE=V
CC
CE=V
IH
OE=V
IH
V
PP=VCC
-
-
=-400µA
I
OH
=2.1mA
OL
MR27V3255D
=3.3V±0.3V, Ta=0 to 70°C)
(V
CC
Min. Max.
2.2
-0.5** V
Typ.
-
-
-
-
-mA
-
-
-
-
-
-
-
-
-
-
-
10
10
50
1
100
10
VCC+0.5*
0.6
-2.4
0.4
UnitCondition
µA
µA
µA
mA
µA
V
V
VI
AC Characteristics
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
Measurement conditions
Input signal level
Input timing reference level
Output load
Output timing reference level
-
CE=OE=V
-
-
OE=V
IL
CE=V
IL
OE=V
IL
CE=V
IL
CE=OE=V
0V/3V
0.8V/2.0V
100pF
0.8V/2.0V
2.08V
=3.3V±0.3V, Ta=0 to 70°C)
(V
CC
Min. Max.
80
IL
-
25
-
-
0
0
IL
0
-
80
25
80
25
25
20
-
UnitCondition
ns
ns
ns
ns
ns
ns
ns
ns
ns
Output
800ohms
100pF
5/10
Page 6
TIMING CHART
NORMAL MODE READ CYCLE
ADDRESS
CE
OE
MR27V3255D
t
C
t
t
CE
t
OE
OH
t
CHZ
DOUT
PAGE MODE READ CYCLE
A3 - A19
A0 - A2 (X32 mode)
A-1 - A2 (X16 mode)
CE
t
ACC
t
OHZ
Valid Data
Hi-ZHi-Z
t
C
t
PC
t
CE
t
OE
t
PC
t
OH
t
CHZ
OE
DOUT
Hi-Z
t
ACC
t
PAC
t
PAC
t
OHZ
Hi-Z
6/10
Page 7
ELECTRICAL CHARACTERISTICS (Programming operation)
DC Characteristics
Parameter
Input leakage current
V
power supply current (Program)
PP
power supply current
V
CC
Input "H" level
Input "L" level
Output "H" level
Output "L" level
Program voltage
V
power supply voltage
CC
Voltage is relative to Vss
AC Characteristics
Parameter
Address set-up time
OE set-up time
Data set-up time
Address hold time
Data hold time
Output float delay from OE
voltage set-up time
V
PP
Program pulse width
Data valid from OE
Address hold from OE high
Symbol
I
LI
I
PP2
I
CC
V
IH
V
IL
V
OH
V
OL
V
PP
V
CC
Symbol
T
AS
T
OES
T
DS
T
AH
T
DH
T
OHZ
T
VS
T
PW
T
OE
T
AHO
Condition
V
+0.5V
I=VCC
CE=V
IL
-
-
=2.1mA
I
OL
-
-
(V
=4.0V±0.1V,Vpp=9.75V±0.25V,Ta=25°C±5°C)
cc
Condition
-
-
-
-
-
-
-
Min. Max.
-
-
-
3.0
-0.5
2.4
-
3.9
Min. Max.
100
2
100
2
100 ns
0
2
-
0
Typ.
-
-
--
-
-
-
-
9.75
4.0
Typ.
-
-
--
-
-
-
10
--
--
MR27V3255D
(Ta=25°C±5°C)
Unit
10
50
80
VCC+0.5
0.8
-
0.45
10.09.5
4.1
µA
mA
mA
V
V
VIOH=-400µA
V
V
V
Unit
-
-
-
-
ns
µs
ns
µs
-
100
-
119
100
-
ns-
µs
µs
ns
ns
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
A0
0
1
10
A1
A2
0
1
1
01010
A3
A4
1
0
A5
(Vcc=3.3V
PA10PA9PA8PA7PA6PA5PA4PA3PA2PA1PA0
A7
A6
0
1
A8
0
1
1
0
A9
VH*
VH*
A10
±0.3V,CE=OE=V
A11
A12
1
0
0
10
A13
A14
0101
1
1
,WORD=V
IL
A16
A15
010
,Ta=25°C±5°C)
IL
A17
A18
1
0
1
0
PA20PA19PA18PA17PA16PA15PA14PA13PA12PA11
A19
Other conditions
* :VH=8V
DATA
0
AAAA
1
5555
FFFF
±0.25V
7/10
Page 8
Consecutive Programming Waveforms
A-1 - A19
MR27V3255D
t
AS
t
PW
CE
High
OE
t
DS
D0 - D15
t
VS
V
PP
Consecutive Program Verify Waveforms
Din Din
t
AH
t
DH
A-1 - A19
CE
OE
D0 - D15
V
PP
t
ACC
High
t
AHO
t
OE
Dout
t
OHZ
Dout
9.75V
8/10
Page 9
Program and Program Verify Cycle Waveforms
A-1 - A19
MR27V3255D
CE
OE
D0 - D15
V
PP
t
OHZ
t
AS
t
PW
t
OES
t
DS
t
DH
Din
t
OE
Dout
t
AHO
t
OHZ
9.75V
PIN Capacitance
Parameter
Input
Output
Symbol
C
IN
C
OUT
Condition
VI=0V
V
=0V
O
(VCC=3.3V, Ta=25°C, f=1MHz)
Min. Max.
-
--
Typ.
10
Unit
8
9/10
pF
Page 10
Programming / Verify Flow Chart
MR27V3255D
Programming
Bad insertion
Increment Address
Start
NO
Pin Check
OK
Address = First location
VCC=4.0V
VPP=9.75V
Program 10µs
NO
Last Address ?
YES
Verify
Start
Pin Check
OK
Address = First location
VCC=3.0V
V
=3.0V
PP
Verify (One Byte)
V
=3.6V
CC
V
=3.6V
PP
Verify (One Byte)
NO
Bad insertion
NG
PASS
NG
Increment Address
Address = First location
X=0
Verify (One Byte)
PASS
NO
Last Address ?
YES
VCC=3.0V
VPP=3.0V
Verify (One Byte)
PASS
PASS
Device Passed Device Failed
NG
X=X+1
YES
X=2?
NO
Program 10µs
NG
Device Passed Device Failed
10/10
Loading...