Dear customers,
About the change in the name such as "Oki Electric Industry Co. Ltd." and
"OKI" in documents to OKI Semiconductor Co., Ltd.
The semiconductor business of Oki Electric Industry Co., Ltd. was succeeded to OKI
Semiconductor Co., Ltd. on October 1, 2008.
Therefore, please accept that although
the terms and marks of "Oki Electric Industry Co., Ltd.", “Oki Electric”, and "OKI"
remain in the documents, they all have been changed to "OKI Semiconductor Co., Ltd.".
It is a change of the company name, the company trademark, and the logo, etc. , and
NOT a content change in documents.
October 1, 2008
OKI Semiconductor Co., Ltd.
550-1 Higashiasakawa-cho, Hachioji-shi, Tokyo 193-8550, Japan
http://www.okisemi.com/en/
OKI Semiconductor
MR27T401E
512K–Word
×
8–Bit
P2ROM
FEDR27T401E-02-01
Issue Date: Apr. 17, 2002
FEATURES
PIN CONFIGURATION (TOP VIEW)
·524,288-word
×
8-bit
· 2.7 V to 3.6 V power supply
· Access time
100 ns MAX
· Operating current
25 mA MAX
· Standby current
10 µA MAX
· Input/Output TTL compatible
· Three-state output
DC
1
A16
2
A15
3
A12
4
A7
5
A6
6
A5
7
A4
8
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
Vcc
A18
A17
A14
A13
A8
A9
A11
OE#
A10
CE#
D7
D6
D5
D4
D3
PACKAGES
· MR27T401E-xxxMA
32-pin plastic SOP (SOP32-P-525-1.27-K)
· MR27T401E-xxxTA
32-pin plastic TSOP (TSOP I 32-P-814-0.50-1K)
A3
9
A2
10
A1
11
A0
12
D0
D1
D2
VSS
13
14
15
16
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.
32SOP,
A11
A9
A8
A13
A14
A17
A18
Vcc
DC
A16
A15
A12
A7
A6
A5
A4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
OE#
A10
CE#
D7
D6
D5
D4
D3
Vss
D2
D1
D0
A0
A1
A2
A3
32TSOP(Type-I)
1/9
FEDR27T401E-02-01
OKI Semiconductor
MR27T401E
BLOCK DIAGRAM
CE#
CE
OE#
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 Cell Matrix
512K × 8-Bit
Address Buffer
Multiplexer
Output Buffer
D0
D1
D2
D3
D4
D5
D6
D7
PIN DESCRIPTIONS
Pin name
A0 to A18
D0 to D7
CE#
OE#
V
CC
V
SS
DC
Address inputs
Data outputs
Chip enable input
Output enable input
Power supply voltage
Ground
Don’t Care *,
Functions
* : Logical input level is ignored . However the pin is connected to internal circuit.
2/9
FEDR27T401E-02-01
OKI Semiconductor
MR27T401E
FUNCTION TABLE
Mode
Read
Output disable
Standby
CE#
L
L
H
OE#
L
H
*
3.0 V
V
CC
D0 to D7
Dout
Hi-Z
Hi-Z
∗:
Don’t Care (H or L)
ABSOLUTE MAXIMUM RATINGS
Parameter
Operating temperature under bias
Storage temperature
Input voltage
Output voltage
Power supply voltage
Power dissipation per package
Symbol
Ta
Tstg
V
I
V
O
V
CC
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
1.0
Unit
°C
°C
V
V
V
W
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
DC
Output
Symbol
C
IN1
C
IN2
C
OUT
Condition
V
I
= 0 V
V
O
= 0 V
Min.
—
—
—
Typ.
—
—
—
Max.
8
200
10
pF
Unit
3/9
FEDR27T401E-02-01
OKI Semiconductor
MR27T401E
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
Symbol
I
LI
I
LO
I
CCSC
I
CCST
I
CCA1
I
CCA2
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
tc = 100 ns
tc = 200 ns
—
—
I
OH
= –1 mA
I
OL
= 2 mA
Min.
—
—
—
—
—
—
2.2
–0.5∗∗
2.4
—
Typ.
—
—
—
—
—
—
—
—
—
—
Max.
10
10
10
1
25
20
V
CC
+0.5∗
0.6
—
0.4
Unit
µA
µA
µA
mA
mA
mA
V
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
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.
100
—
—
—
0
0
0
Max.
—
100
100
40
35
30
—
Unit
ns
ns
ns
ns
ns
ns
ns
Measurement conditions
Input signal level --------------------------------
0 V/Vcc 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)
4/9
