OKI Semiconductor
MR27T6402L
4M–Word
×
16–Bit or 8M–Word
×
8–Bit
FEDR27T6402L-02-01
Issue Date: May. 9, 2005
P2ROM
PIN CONFIGURATION (TOP VIEW)
A21
A18
A17
A7
A6
A5
A4
A3
A2
1
2
3
4
5
6
7
8
9
44
A20
43
A19
42
A8
41
A9
40
A10
39
A11
38
A12
37
A13
36
A14
35
A15
34
A16
33
BYTE#
32
V
SS
31
D15/A–1
30
D7
29
D14
28
D6
27
D13
26
D5
25
D12
24
D4
23
V
CC
FEATURES
·4,194,304-word
×
16-bit / 8,388,608-word
×
8-bit electrically
switchable configuration
· Access time
2.7 V to 3.6 V power supply 90 ns MAX
3.0 V to 3.6 V power supply 80 ns MAX
· Operating current
20 mA MAX (5MHz)
· Standby current
10 µA MAX
· Input/Output TTL compatible
· Three-state output
A1
10
A0
11
CE#
12
V
SS
13
PACKAGES
· MR27T6402L-xxxMA
44-pin plastic SOP (SOP44-P-600-1.27-K)
· MR27T6402L-xxxTN
48-pin plastic TSOP (TSOP I 48-P-1220-0.50-1K)
OE#
14
D0
15
D8
16
D1
17
D9
18
D2
19
D10
20
D3
21
D11
22
44SOP
P2ROM ADVANCED TECHNOLOGY
P2ROM stands for Production Programmed ROM. This
exclusive Oki technology utilizes factory test equipment for
programming the customers code into the P2ROM prior to final
production testing. Advancements in this technology allows
production costs to be equivalent to MASKROM and has many
advantages and added benefits over the other non-volatile
technologies, which include the following;
·
Short lead time,
since the P2ROM is programmed at the
final stage of the production process, a large P2ROM
inventory "bank system" of un-programmed packaged
products are maintained to provide an aggressive lead-time
and minimize liability as a custom product.
·
No mask charge,
since P2ROMs do not utilize a custom
mask for storing customer code, no mask charges apply.
·
No additional programming charge,
unlike Flash and
OTP that require additional programming and handling
costs, the P2ROM already has the code loaded at the
factory with minimal effect on the production throughput.
The cost is included in the unit price.
·
Custom Marking is
available at no additional charge.
·
Pin Compatible with Mask ROM
and some FLASH
products.
A15
A14
A13
A12
A11
A10
A9
A8
A19
1
2
3
4
5
6
7
8
9
48
A16
47
BYTE#
46
V
SS
45
D15/A–1
44
D7
43
D14
42
D6
41
D13
40
D5
39
D12
38
D4
37
V
CC
36
D11
35
D3
34
D10
33
D2
32
D9
31
D1
30
D8
29
D0
28
OE#
27
V
SS
26
CE#
25
A0
A20
10
NC
11
NC
12
A21
13
NC
NC
15
14
A18
16
A17
17
A7
18
A6
19
A5
20
A4
21
A3
A2
23
22
A1
24
48TSOP(Type-I)
1/10
FEDR27T6402L-02-01
OKI Semiconductor
MR27T6402L / P2ROM
BLOCK DIAGRAM
A–1
× 8/× 16 Switch
CE#
CE
OE#
OE
BYTE#
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
Row Decoder
Memory Cell Matrix
4M × 16-Bit or 8M × 8-Bit
Address Buffer
Column Decoder
Multiplexer
Output Buffer
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D12
D14
D15
D11
D13
In 8-bit output mode, these pins
are placed in a high-Z state and
pin D15 functions as the A-1
address pin.
PIN DESCRIPTIONS
Pin name
D15 / A–1
A0 to A21
D0 to D14
CE#
OE#
BYTE#
V
CC
V
SS
NC
Address inputs
Data outputs
Chip enable input
Output enable input
Word / Byte select input
Power supply voltage
Ground
No connect
Functions
Data output / Address input
2/10
FEDR27T6402L-02-01
OKI Semiconductor
MR27T6402L / P2ROM
FUNCTION TABLE
Mode
Read (16-Bit)
Read (8-Bit)
Output disable
Standby
∗:
Don’t Care (H or L)
CE#
L
L
L
H
OE#
L
L
H
∗
BYTE#
H
L
H
L
H
L
2.7 V
to
3.6 V
D
OUT
V
CC
D0 to D7
D8 to D14
D
OUT
Hi–Z
Hi–Z
Hi–Z
L/H
∗
∗
D15/A–1
ABSOLUTE MAXIMUM RATINGS
Parameter
Operating temperature under bias
Storage temperature
Input voltage
Output voltage
Power supply voltage
Power dissipation per package
Output short circuit current
Symbol
Ta
Tstg
V
I
V
O
V
CC
P
D
I
OS
Ta = 25°C
—
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
10
Unit
°C
°C
V
V
V
W
mA
RECOMMENDED OPERATING CONDITIONS
(Ta = 0 to 70°C)
Parameter
V
CC
power supply voltage
Input “H” level
Input “L” level
Symbol
V
CC
V
IH
V
IL
V
CC
= 2.7 to 3.6 V
Condition
Min.
2.7
2.2
–0.5∗∗
Typ.
—
—
—
Max.
3.6
V
CC
+0.5∗
0.6
Unit
V
V
V
Voltage is relative to V
SS
.
∗
: 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.
PIN CAPACITANCE
(V
CC
= 3.0 V, Ta = 25°C, f = 1 MHz)
Parameter
Input
BYTE#
Output
Symbol
C
IN1
C
IN2
C
OUT
Condition
V
I
= 0 V
V
O
= 0 V
Min.
—
—
—
Typ.
—
—
—
Max.
12
200
12
pF
Unit
3/10
FEDR27T6402L-02-01
OKI Semiconductor
MR27T6402L / P2ROM
ELECTRICAL CHARACTERISTICS
DC Characteristics
(V
CC
= 2.7 V to 3.6 V, 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 V
SS
.
Symbol
I
LI
I
LO
I
CCSC
I
CCST
I
CCA
V
IH
V
IL
V
OH
V
OL
Condition
V
I
= 0 to V
CC
V
O
= 0 to V
CC
CE# = V
CC
CE# = V
IH
CE# = V
IL
, OE# = V
IH
f=5MHz
—
—
I
OH
= –1 mA
I
OL
= 2 mA
Min.
—
—
—
—
—
2.2
–0.5∗∗
2.4
—
Typ.
—
—
—
—
—
—
—
—
—
Max.
10
10
10
1
20
V
CC
+0.5∗
0.6
—
0.4
Unit
µA
µA
µA
mA
mA
V
V
V
V
∗
: 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.
4/10
FEDR27T6402L-02-01
OKI Semiconductor
MR27T6402L / P2ROM
AC Characteristics
(V
CC
= 2.7 V to 3.6 V, Ta = 0 to 70°C)
Parameter
Address cycle time
Address access time
CE# access time
OE# access time
Output disable time
Output hold time
Symbol
t
C
t
ACC
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.
90
—
—
—
0
0
0
Max.
—
90
90
30
30
25
—
Unit
ns
ns
ns
ns
ns
ns
ns
(V
CC
= 3.0 V to 3.6 V, Ta = 0 to 70°C)
Parameter
Address cycle time
Address access time
CE# access time
OE# access time
Output disable time
Output hold time
Symbol
t
C
t
ACC
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
—
—
—
0
0
0
Max.
—
80
80
30
20
20
—
Unit
ns
ns
ns
ns
ns
ns
ns
Measurement conditions
Input signal level ------------------------------------ 0 V/3 V
Input timing reference level ----------------------- 1/2Vcc
Output load ------------------------------------------- 50 pF
Output timing reference level
-------------------
1/2Vcc
Output load
Output
50 pF
(Including scope and jig)
5/10
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