首页 > 器件类别 > 存储 > 存储

M5M51008DVP-70HI

Standard SRAM, 128KX8, 70ns, CMOS, PDSO32, 8 X 20 MM, TSOP-32

器件类别:存储    存储   

厂商名称:Mitsubishi(日本三菱)

厂商官网:http://www.mitsubishielectric.com/semiconductors/

下载文档
器件参数
参数名称
属性值
是否Rohs认证
不符合
厂商名称
Mitsubishi(日本三菱)
零件包装代码
TSOP
包装说明
TSOP1, TSSOP32,.8,20
针数
32
Reach Compliance Code
unknown
ECCN代码
EAR99
最长访问时间
70 ns
I/O 类型
COMMON
JESD-30 代码
R-PDSO-G32
JESD-609代码
e0
长度
18.4 mm
内存密度
1048576 bit
内存集成电路类型
STANDARD SRAM
内存宽度
8
功能数量
1
端子数量
32
字数
131072 words
字数代码
128000
工作模式
ASYNCHRONOUS
最高工作温度
85 °C
最低工作温度
-40 °C
组织
128KX8
输出特性
3-STATE
封装主体材料
PLASTIC/EPOXY
封装代码
TSOP1
封装等效代码
TSSOP32,.8,20
封装形状
RECTANGULAR
封装形式
SMALL OUTLINE, THIN PROFILE
并行/串行
PARALLEL
电源
5 V
认证状态
Not Qualified
座面最大高度
1.2 mm
最小待机电流
2 V
最大压摆率
0.07 mA
最大供电电压 (Vsup)
5.5 V
最小供电电压 (Vsup)
4.5 V
标称供电电压 (Vsup)
5 V
表面贴装
YES
技术
CMOS
温度等级
INDUSTRIAL
端子面层
Tin/Lead (Sn/Pb)
端子形式
GULL WING
端子节距
0.5 mm
端子位置
DUAL
宽度
8 mm
文档预览
Ver. 1.1
MITSUBISHI LSIs
M5M51008DFP,VP,RV,KV,KR -55H, -70H
1048576-BIT(131072-WORD BY 8-BIT)CMOS STATIC RAM
DESCRIPTION
The M5M51008DP,FP,VP,RV,KV are a 1048576-bit CMOS static
RAM organized as 131072 word by 8-bit which are fabricated using
high-performance quadruple-polysilicon and double metal CMOS
technology. The use of thin film transistor (TFT) load cells and
CMOS periphery result in a high density and low power static
RAM.
They are low standby current and low operation current and ideal
for the battery back-up application.
The M5M51008DVP,RV,KV are packaged in a 32-pin thin small
outline package which is a high reliability and high density surface
mount device(SMD). Two types of devices are available.
M5M51008DVP(normal lead bend type package),
M5M51008DRV(reverse lead bend type package).Using both types
of devices, it becomes very easy to design a printed circuit board.
PIN CONFIGURATION (TOP VIEW)
NC
1
A
16 2
A
14 3
A
12 4
A
7 5
A
6 6
A
5 7
A
4 8
A
3 9
A
2 10
A
1 11
A
0 12
DQ
1 13
DQ
2 14
DQ
3 15
GND
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
ADDRESS
INPUTS
FEATURES
Type name
M5M51008DFP,VP,RV,KV-55H
M5M51008DFP,VP,RV,KV-70H
Access
time
(max)
Power supply current
Active
(1MHz)
(max)
stand-by
(max)
DATA
INPUTS/
OUTPUTS
V
CC
ADDRESS
A
15
INPUT
CHIP SELECT
S
2
INPUT
W
WRITE CONTROL
INPUT
A
13
A
8
ADDRESS
INPUTS
A
9
A
11
OE
OUTPUT ENABLE
INPUT
A
10
ADDRESS
INPUT
S
1
CHIP SELECT
INPUT
DQ
8
DQ
7
DQ
6
DATA
INPUTS/
DQ
5
OUTPUTS
DQ
4
Outline 32P2M-A(FP)
A
11
A
9
A
8
A
13
W
S
2
A
15
V
CC
NC
A
16
A
14
A
12
A
7
A
6
A
5
A
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
55ns
70ns
15mA
(1MHz)
20µA
(Vcc=5.5V)
Directly TTL compatible : All inputs and outputs
Easy memory expansion and power down by S
1
,S
2
Data hold on +2V power supply
Three-state outputs : OR - tie capability
OE prevents data contention in the I/O bus
Common data I/O
Package
M5M51008DFP
············
32pin 525mil SOP
2
M5M51008DVP,RV
············
32pin 8 X 20 mm TSOP
2
M5M51008DKV
············
32pin 8 X 13.4 mm TSOP
OE
A
10
S
1
DQ
8
DQ
7
DQ
6
DQ
5
DQ
4
GND
DQ
3
DQ
2
DQ
1
A
0
A
1
A
2
A
3
M5M51008DVP,KV
25
24
23
22
21
20
19
18
17
APPLICATION
Small capacity memory units
A
4
A
5
A
6
A
7
A
12
A
14
A
16
NC
V
CC
A
15
S
2
W
A
13
A
8
A
9
A
11
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
Outline 32P3H-E(VP), 32P3K-B(KV)
17
18
19
20
21
22
23
M5M51008DRV
24
25
26
27
28
29
30
31
32
A
3
A
2
A
1
A
0
DQ
1
DQ
2
DQ
3
GND
DQ
4
DQ
5
DQ
6
DQ
7
DQ
8
S
1
A
10
OE
Outline 32P3H-F(RV)
NC : NO CONNECTION
MITSUBISHI
ELECTRIC
1
Ver. 1.1
MITSUBISHI LSIs
M5M51008DFP,VP,RV,KV,KR -55H, -70H
1048576-BIT(131072-WORD BY 8-BIT)CMOS STATIC RAM
FUNCTION
The operation mode of the M5M51008D series are determined by
a combination of the device control inputs S
1
,S
2
,W and OE.
Each mode is summarized in the function table.
A write cycle is executed whenever the low level W overlaps with
the low level S
1
and the high level S
2
. The address must be set up
before the write cycle and must be stable during the entire cycle.
The data is latched into a cell on the trailing edge of W,S
1
or
S
2
,whichever occurs first,requiring the set-up and hold time relative
to these edge to be maintained. The output enable input OE
directly controls the output stage. Setting the OE at a high level,
the output stage is in a high-impedance state, and the data bus
contention problem in the write cycle is eliminated.
A read cycle is executed by setting W at a high level and OE at a
low level while S
1
and S
2
are in an active state(S
1
=L,S
2
=H).
When setting S
1
at a high level or S
2
at a low level, the chip are in
a non-selectable mode in which both reading and writing are
disabled. In this mode, the output stage is in a high- impedance
state, allowing OR-tie with other chips and memory expansion by
S
1
and S
2
. The power supply current is reduced as low as the
stand-by current which is specified as I
CC3
or I
CC4
, and the memory
data can be held at +2V power supply, enabling battery back-up
operation during power failure or power-down operation in the non-
selected mode.
FUNCTION TABLE
S
1
X
H
L
L
L
S
2
L
X
H
H
H
W
X
X
L
H
H
Mode
DQ
OE
X Non selection High-impedance
X Non selection High-impedance
Din
X
Write
Dout
L
Read
High-impedance
H
I
CC
Stand-by
Stand-by
Active
Active
Active
BLOCK DIAGRAM
*
A3
9
17
18
15
14
13
12
11
10
7
*
21
22
13 DQ1
14 DQ2
15 DQ3
17 DQ4
18 DQ5
19 DQ6
20 DQ7
21 DQ8
DATA
INPUTS/
OUTPUTS
A2 10
A5
A6
A7
7
6
5
A12 4
A14 3
A16 2
A15 31
131072 WORDS
X 8 BITS
(512 ROWS
X128 COLUMNS
X 16BLOCKS)
23
25
26
27
28
29
ADDRESS
INPUTS
A13 28
A8 27
A9 26
A11 25
4
3
2
1
5
A4
8
16
19
20
31
32
8
24
30
6
WRITE
29 W CONTROL
INPUT
22 S1
30 S2
CHIP
SELECT
INPUTS
CLOCK
GENERATOR
A1 11
A0 12
A10 23
OUTPUT
24 OE ENABLE
INPUT
32 V
CC
16 GND
(0V)
* Pin numbers inside dotted line show those of TSOP
MITSUBISHI
ELECTRIC
2
Ver. 1.1
MITSUBISHI LSIs
M5M51008DFP,VP,RV,KV,KR -55H, -70H
1048576-BIT(131072-WORD BY 8-BIT)CMOS STATIC RAM
ABSOLUTE MAXIMUM RATINGS
Symbol
Vcc
V
I
V
O
P
d
T
opr
T
stg
Parameter
Supply voltage
Input voltage
Output voltage
Power dissipation
Operating temperature
Storage temperature
Conditions
With respect to GND
Ta=25°C
Ratings
– 0.3*~7
– 0.3*~Vcc + 0.3
0~Vcc
700
0~70
– 65~150
Unit
V
V
V
mW
°C
°C
* –3.0V in case of AC ( Pulse width
50ns )
DC ELECTRICAL CHARACTERISTICS
(Ta=0~70°C, Vcc=5V±10%, unless otherwise noted)
Symbol
V
IH
V
IL
V
OH
V
OL
I
I
I
O
Parameter
High-level input voltage
Low-level input voltage
High-level output voltage
Low-level output voltage
Input current
Output current in off-state
Active supply current
(AC, MOS level)
I
OH
=
1.0mA
I
OH
=
0.1mA
I
OL
=2mA
V
I
=0~Vcc
S
1
=V
IH
or S
2
=V
IL
or OE=V
IH
V
I/O
=0~V
CC
S
1
0.2V, S
2
VCC–0.2V
other inputs
0.2V or
VCC–0.2V
Output-open(duty 100%)
S
1
=V
IL
,S
2
=V
IH
,
other inputs=V
IH
or V
IL
Output-open(duty 100%)
1) S
2
0.2V,
other inputs=0~V
CC
2) S
1
V
CC
–0.2V,
S
2
V
CC
–0.2V,
other inputs=0~V
CC
S
1
=V
IH
or S
2
=V
IL
,
other inputs=0~V
CC
55ns
70ns
1MHz
55ns
70ns
1MHz
~25°C
-H
~40°C
~70°C
39
34
4
42
37
5
Test conditions
Min
2.2
0.3*
Limits
Typ
Max
Vcc + 0.3
Unit
V
V
V
V
0.8
2.4
Vcc – 0.5
0.4
±1
±1
80
70
15
85
70
15
2
6
20
3
V
µA
µA
I
CC1
mA
I
CC2
Active supply current
(AC, TTL level)
mA
I
CC3
Stand-by current
µA
I
CC4
Stand-by current
mA
* –3.0V in case of AC ( Pulse width
50ns )
CAPACITANCE
(Ta=0~70°C, Vcc=5V±10% unless otherwise noted)
Symbol
C
I
C
O
Parameter
Input capacitance
Output capacitance
FP,VP,RV,KV
FP,VP,RV,KV
Test conditions
V
I
=GND, V
I
=25mVrms, f=1MHz
V
O
=GND,V
O
=25mVrms, f=1MHz
Min
Limits
Typ
Max
8
10
Unit
pF
pF
Note 1: Direction for current flowing into an IC is positive (no mark).
2: Typical value is Vcc = 5V, Ta = 25°C
MITSUBISHI
ELECTRIC
3
Ver. 1.1
MITSUBISHI LSIs
M5M51008DFP,VP,RV,KV,KR -55H, -70H
1048576-BIT(131072-WORD BY 8-BIT)CMOS STATIC RAM
AC ELECTRICAL CHARACTERISTICS
(Ta=0~70°C, 5V±10% unless otherwise noted )
(1) MEASUREMENT CONDITIONS
Input pulse level ............... V
IH
=2.4V,V
IL
=0.6V (-70H)
V
IH
=3.0V,V
IL
=0.0V (-55H)
...... 5ns
Input rise and fall time
Reference level ................ V
OH
=V
OL
=1.5V
Output loads ..................... Fig.1, C
L
=100pF (-70H)
C
L
=30pF (-55H)
C
L
=5pF (for t
en
,t
dis
)
Transition is measured ± 500mV from steady
state voltage. (for t
en
,t
dis
)
V
CC
1.8kΩ
DQ
990Ω
C
L
( Including scope
and JIG )
Fig.1 Output load
(2) READ CYCLE
Limits
Symbol
t
CR
t
a(A)
t
a(S1)
t
a(S2)
t
a(OE)
t
dis(S1)
t
dis(S2)
t
dis(OE)
t
en(S1)
t
en(S2)
t
en(OE)
t
V(A)
Parameter
Read cycle time
Address access time
Chip select 1 access time
Chip select 2 access time
Output enable access time
Output disable time after S
1
high
Output disable time after S
2
low
Output disable time after OE high
Output enable time after S
1
low
Output enable time after S
2
high
Output enable time after OE low
Data valid time after address
Min
55
-55H
Max
55
55
55
30
20
20
20
5
5
5
5
10
10
5
10
Min
70
-70H
Max
70
70
70
35
25
25
25
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit
(3) WRITE CYCLE
Limits
Symbol
t
CW
t
w(W)
t
su(A)
t
su(A-WH)
t
su(S1)
t
su(S2)
t
su(D)
t
h(D)
t
rec(W)
t
dis(W)
t
dis(OE)
t
en(W)
t
en(OE)
Parameter
Write cycle time
Write pulse width
Address setup time
Address setup time with respect to W
Chip select 1 setup time
Chip select 2 setup time
Data setup time
Data hold time
Write recovery time
Output disable time from W low
Output disable time from OE high
Output enable time from W high
Output enable time from OE low
-55H
Min
Max
55
45
0
50
50
50
25
0
0
20
20
5
5
5
5
-70H
Min
Max
70
50
0
55
55
55
30
0
0
25
25
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MITSUBISHI
ELECTRIC
4
Ver. 1.1
MITSUBISHI LSIs
M5M51008DFP,VP,RV,KV,KR -55H, -70H
1048576-BIT(131072-WORD BY 8-BIT)CMOS STATIC RAM
(4) TIMING DIAGRAMS
Read cycle
t
CR
A
0~16
t
a(A)
t
v (A)
t
a (S1)
S
1
(Note 3)
(Note 3)
t
dis (S1)
S
2
(Note 3)
t
a (S2)
t
a (OE)
t
en (OE)
t
dis (S2)
(Note 3)
OE
(Note 3)
t
dis (OE)
t
en (S1)
t
en (S2)
(Note 3)
DQ
1~8
W = "H" level
DATA VALID
Write cycle (W control mode)
t
CW
A
0~16
t
su (S1)
S
1
(Note 3)
(Note 3)
S
2
(Note 3)
t
su (S2)
(Note 3)
t
su (A-WH)
OE
t
su (A)
W
t
w (W)
t
rec (W)
t
dis (W)
t
dis (OE)
DQ
1~8
t
en (W)
DATA IN
STABLE
t
su (D)
t
h (D)
t
en(OE)
MITSUBISHI
ELECTRIC
5
查看更多>
参数对比
与M5M51008DVP-70HI相近的元器件有:M5M51008DFP-70HI、M5M51008DRV-70HI、M5M51008DRV-55HI、M5M51008DKV-70HI、M5M51008DFP-55HI、M5M51008DKV-55HI、M5M51008DVP-55HI。描述及对比如下:
型号 M5M51008DVP-70HI M5M51008DFP-70HI M5M51008DRV-70HI M5M51008DRV-55HI M5M51008DKV-70HI M5M51008DFP-55HI M5M51008DKV-55HI M5M51008DVP-55HI
描述 Standard SRAM, 128KX8, 70ns, CMOS, PDSO32, 8 X 20 MM, TSOP-32 Standard SRAM, 128KX8, 70ns, CMOS, PDSO32, 0.525 INCH, SOP-32 Standard SRAM, 128KX8, 70ns, CMOS, PDSO32, 8 X 20 MM, REVERSE, TSOP-32 Standard SRAM, 128KX8, 55ns, CMOS, PDSO32, 8 X 20 MM, REVERSE, TSOP-32 Standard SRAM, 128KX8, 70ns, CMOS, PDSO32, 8 X 13.40 MM, TSOP-32 Standard SRAM, 128KX8, 55ns, CMOS, PDSO32, 0.525 INCH, SOP-32 Standard SRAM, 128KX8, 55ns, CMOS, PDSO32, 8 X 13.40 MM, TSOP-32 Standard SRAM, 128KX8, 55ns, CMOS, PDSO32, 8 X 20 MM, TSOP-32
是否Rohs认证 不符合 不符合 不符合 不符合 不符合 不符合 不符合 不符合
零件包装代码 TSOP SOIC TSOP TSOP TSOP SOIC TSOP TSOP
包装说明 TSOP1, TSSOP32,.8,20 SOP, SOP32,.56 TSOP1-R, TSSOP32,.8,20 TSOP1-R, TSSOP32,.8,20 TSOP1, TSSOP32,.56,20 0.525 INCH, SOP-32 8 X 13.40 MM, TSOP-32 8 X 20 MM, TSOP-32
针数 32 32 32 32 32 32 32 32
Reach Compliance Code unknown unknown unknown unknown unknown unknown unknown unknown
ECCN代码 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
最长访问时间 70 ns 70 ns 70 ns 55 ns 70 ns 55 ns 55 ns 55 ns
I/O 类型 COMMON COMMON COMMON COMMON COMMON COMMON COMMON COMMON
JESD-30 代码 R-PDSO-G32 R-PDSO-G32 R-PDSO-G32 R-PDSO-G32 R-PDSO-G32 R-PDSO-G32 R-PDSO-G32 R-PDSO-G32
JESD-609代码 e0 e0 e0 e0 e0 e0 e0 e0
长度 18.4 mm 20.75 mm 18.4 mm 18.4 mm 11.8 mm 20.75 mm 11.8 mm 18.4 mm
内存密度 1048576 bit 1048576 bit 1048576 bit 1048576 bit 1048576 bit 1048576 bit 1048576 bit 1048576 bit
内存集成电路类型 STANDARD SRAM STANDARD SRAM STANDARD SRAM STANDARD SRAM STANDARD SRAM STANDARD SRAM STANDARD SRAM STANDARD SRAM
内存宽度 8 8 8 8 8 8 8 8
功能数量 1 1 1 1 1 1 1 1
端子数量 32 32 32 32 32 32 32 32
字数 131072 words 131072 words 131072 words 131072 words 131072 words 131072 words 131072 words 131072 words
字数代码 128000 128000 128000 128000 128000 128000 128000 128000
工作模式 ASYNCHRONOUS ASYNCHRONOUS ASYNCHRONOUS ASYNCHRONOUS ASYNCHRONOUS ASYNCHRONOUS ASYNCHRONOUS ASYNCHRONOUS
最高工作温度 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C
最低工作温度 -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C
组织 128KX8 128KX8 128KX8 128KX8 128KX8 128KX8 128KX8 128KX8
输出特性 3-STATE 3-STATE 3-STATE 3-STATE 3-STATE 3-STATE 3-STATE 3-STATE
封装主体材料 PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
封装代码 TSOP1 SOP TSOP1-R TSOP1-R TSOP1 SOP TSOP1 TSOP1
封装等效代码 TSSOP32,.8,20 SOP32,.56 TSSOP32,.8,20 TSSOP32,.8,20 TSSOP32,.56,20 SOP32,.56 TSSOP32,.56,20 TSSOP32,.8,20
封装形状 RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
封装形式 SMALL OUTLINE, THIN PROFILE SMALL OUTLINE SMALL OUTLINE, THIN PROFILE SMALL OUTLINE, THIN PROFILE SMALL OUTLINE, THIN PROFILE SMALL OUTLINE SMALL OUTLINE, THIN PROFILE SMALL OUTLINE, THIN PROFILE
并行/串行 PARALLEL PARALLEL PARALLEL PARALLEL PARALLEL PARALLEL PARALLEL PARALLEL
电源 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V
认证状态 Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
座面最大高度 1.2 mm 3.05 mm 1.2 mm 1.2 mm 1.2 mm 3.05 mm 1.2 mm 1.2 mm
最小待机电流 2 V 2 V 2 V 2 V 2 V 2 V 2 V 2 V
最大压摆率 0.07 mA 0.07 mA 0.07 mA 0.085 mA 0.07 mA 0.085 mA 0.085 mA 0.085 mA
最大供电电压 (Vsup) 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V
最小供电电压 (Vsup) 4.5 V 4.5 V 4.5 V 4.5 V 4.5 V 4.5 V 4.5 V 4.5 V
标称供电电压 (Vsup) 5 V 5 V 5 V 5 V 5 V 5 V 5 V 5 V
表面贴装 YES YES YES YES YES YES YES YES
技术 CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS
温度等级 INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
端子面层 Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb)
端子形式 GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
端子节距 0.5 mm 1.27 mm 0.5 mm 0.5 mm 0.5 mm 1.27 mm 0.5 mm 0.5 mm
端子位置 DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL
宽度 8 mm 11.4 mm 8 mm 8 mm 8 mm 11.4 mm 8 mm 8 mm
厂商名称 Mitsubishi(日本三菱) Mitsubishi(日本三菱) Mitsubishi(日本三菱) - - Mitsubishi(日本三菱) Mitsubishi(日本三菱) Mitsubishi(日本三菱)
热门器件
热门资源推荐
器件捷径:
00 01 02 03 04 05 06 07 08 09 0A 0C 0F 0J 0L 0M 0R 0S 0T 0Z 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 1H 1K 1M 1N 1P 1S 1T 1V 1X 1Z 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 2G 2K 2M 2N 2P 2Q 2R 2S 2T 2W 2Z 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 3G 3H 3J 3K 3L 3M 3N 3P 3R 3S 3T 3V 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4M 4N 4P 4S 4T 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5E 5G 5H 5K 5M 5N 5P 5S 5T 5V 60 61 62 63 64 65 66 67 68 69 6A 6C 6E 6F 6M 6N 6P 6R 6S 6T 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7M 7N 7P 7Q 7V 7W 7X 80 81 82 83 84 85 86 87 88 89 8A 8D 8E 8L 8N 8P 8S 8T 8W 8Y 8Z 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9F 9G 9H 9L 9S 9T 9W
需要登录后才可以下载。
登录取消