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查询MR27T6402L供应商
OKI Semiconducto
FEDR27T6402L-02-01
Issue Date: May. 9, 2005
MR27T6402L
4M–Word × 16–Bit or 8M–Word × 8–Bit P2ROM
FEATURES
·4,194,304-word × 16-bit / 8,388,608-word × 8-bit electri cally
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 cur rent 20 mA MAX (5MHz)
· Standby current 10 µA MAX
· Input/Output TTL compatible
· Three- state output
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)
P2ROM ADVANCED TECHNOL O G Y
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 cos ts to be equiv alent to MAS KRO M and has ma ny
advantages and added benefits over the other non-volatile
technologies, which include the following;
· Short le ad t i me , since the P2ROM is programmed at the
final stage of the production process, a large P2ROM
inventory "bank system" of un-programmed packaged
pr oduct s are main tained to provid e a n aggressive lead-time
and minimize liability as a custom product.
· No mask charge, since P2ROMs do not utilize a custom
mask for stor ing customer code, no mask charg es a pp ly.
· No additional pr ogr a mming c harge, unlike Flash and
OTP that require additional programming and handling
costs, the P2ROM alr eady has the code l oa ded 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 RO M and some FLASH
products.
PIN CONFIGURATION (TOP VIEW)
1
2
3
4
5
6
7
8
9
10
11
0
12
CE
13
V
S
14
OE
15
D0
16
D8
17
D1
18
D9
19
D2
20
D10
21
D3
22
D11
1
A15
2
A14
3
A13
4
A12
5
A11
6
A10
7
A9
8
A8
9
A19
10
A20
11
NC
12
NC
13
A21
14
NC
15
NC
16
A18
17
A17
18
A7
19
A6
20
A5
21
A4
22
A3
23
A2
24
A1
48TSOP(Type-I)
44SOP
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
A20
A19
A8
A9
A10
A11
A12
A13
A14
A15
A16
BYTE#
VSS
D15/A–1
D7
D14
D6
D13
D5
D12
D4
VCC
A16
BYTE#
VSS
D15/A–1
D7
D14
D6
D13
D5
D12
D4
VCC
D11
D3
D10
D2
D9
D1
D8
D0
OE#
VSS
CE#
A0
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FEDR27T6402L-02-01
A
A
OKI Semiconductor
BLOCK DIAG RAM
A1
A2
A3
A4
A5
A6
A7
A8
A9
10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
A21
0
Address Buffer
PIN DESCRIPTIONS
Pin name Functions
D15 / A–1 Data output / Address input
A0 to A21 Address inputs
D0 to D14 Data outputs
CE# Chip enable input
OE# Output enable input
BYTE# Word / Byt e select input
VCC Power supply voltage
VSS Ground
NC No connect
A–1
× 8/× 16 Switch
CE# BYTE# OE#
CE OE
Row Decoder Column Decoder
D0 D2 D4 D6 D8 D10 D12 D14
D1 D3 D5 D7 D9 D11 D13 D15
MR27T6402L / P2ROM
Memory Cell Matrix
4M × 16-Bit or 8M × 8-Bit
Multiplexer
Output Buffer
In 8-bit output mode, these pins
are placed in a high-Z state and
pin D15 functions as the A-1
address pin.
2/10
FEDR27T6402L-02-01
OKI Semiconductor
MR27T6402L / P2ROM
FUNCTION TABLE
Mode CE# OE# BYTE# VCC D0 to D7 D8 to D14 D15/A–1
Read (16-Bit) L L H D
Read (8-Bit) L L L D
Output disabl e L H
Standby H ∗
H
L
H
L
2.7 V
to
3.6 V
Hi–Z L/H
OUT
OUT
Hi–Z
Hi–Z
∗
∗
∗: Don’t Care (H or L)
ABSOLUT E MAXIMUM RATINGS
Parameter Symbol Condition Value Unit
Operating temperatur e under bias Ta 0 to 70 °C
Storage temperature Tstg
Input voltage VI –0.5 to VCC+0.5 V
Output volt age VO –0.5 to VCC+0.5 V
Power supply voltage VCC
Power dissipation per package PD Ta = 25°C 1.0 W
Output short circuit current IOS — 10 mA
—
relative to V
SS
–55 to 125 °C
–0.5 to 5 V
RECOMMENDED OPERAT IN G CO NDI T I O NS
(Ta = 0 to 70°C)
Parameter Symbol Condition Min. Typ. Max. Unit
VCC power supply voltage VCC 2.7 — 3.6 V
V
Input “H” level VIH 2.2 — VCC+0.5∗ V
Input “L” level VIL
= 2.7 to 3.6 V
CC
–0.5∗∗ — 0.6 V
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 i s l ess than 10ns.
PIN CAPACITANCE
(VCC = 3.0 V, Ta = 25°C, f = 1 MHz)
Parameter Symbol Condition Min. Typ. Max. Unit
Input C
BYTE# C
Output C
— — 12
IN1
IN2
V
OUT
V
= 0 V
I
= 0 V — — 12
O
— — 200
pF
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