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參數(shù)資料
| 型號： | M66220FP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | 256 x 8-BIT MAIL-BOX |
| 中文描述： | 256 × 8位企業(yè)郵箱 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 138K |
| 代理商： | M66220FP |
M66220SP/FP
2 8-BIT MAIL-BOX
×
8-BIT MAIL-BOX
256
1
DESCRIPTION
The M66220 is a mail box that incorporates a complete CMOS shared
memory cell of 256
×
8-bit configuration using high-performance silicon
gate CMOS process technology, and is equipped with two access
ports of A and B.
Access ports A and B are equipped with independent addresses CS,
WE and OE control pins and I/O pins to allow independent and
asynchronous read/write operations from/to shared memory
individually. This product also incorporates a port adjustment
arbitration function in address contention from both ports.
FEATURES
Memory configuration of 256
×
8 bits
High-speed access, address access time 40ns (typ.)
Complete asynchronous accessibility from ports A and B
Completely static operation
Built-in port arbitration function
Low power dissipation CMOS design
5V single power supply
Not Ready output pin is provided (open drain output)
TTL direct-coupled I/O
3-state output for I/O pins
APPLICATION
Inter-MPU data transfer memory, buffer memory for image processing
system.
MIMITSUBISHI
DIDIGITAL ASSP
BLOCK DIAGRAM
PIN CONFIGURATION (Top view)
NOT READY
OUTPUT
Not Ready A
WEA
CSA
OEA
I/O
0
A
I/O
1
A
I/O
2
A
I/O
3
A
I/O
4
A
I/O
5
A
I/O
6
A
I/O
7
A
19
20
A
0
A
A
1
A
A
2
A
A
3
A
A
4
A
A
5
A
A
6
A
A
7
A
3
2
1
4
13
14
15
16
17
18
5
6
7
8
9
10
11
12
Not Ready B
WEB
CSB
OEB
I/O
0
B
I/O
1
B
I/O
2
B
I/O
3
B
I/O
4
B
I/O
5
B
I/O
6
B
I/O
7
B
A
0
B
A
1
B
A
2
B
A
3
B
A
4
B
A
5
B
A
6
B
A
7
B
39
40
41
38
22
23
24
25
26
27
28
29
37
36
35
34
33
32
31
30
A PORT
ADDRESS INPUT
CHIP
SELECT INPUT
OUTPUT
ENABLE INPUT
A PORT DATA I/O
CONTROL
CIRCUIT
I/O BUFFER
ROW/COLUMN
DECODER
ARBITRATION
CIRCUIT
MEMORY ARRAY OF
256-WORD
×
8-BIT
CONFIGURATION
CONTROL
CIRCUIT
I/O BUFFER
ROW/COLUMN
DECODER
NOT READY
OUTPUT
WRITE
ENABLE INPUT
WRITE
ENABLE INPUT
CHIP
SELECT INPUT
OUTPUT
ENABLE INPUT
B PORT DATA I/O
B PORT
ADDRESS INPUT
42V
CC
21GND
OEA
8
8
WEA
A
0
A
~
A
7
A
~
A
7
B
WEB
8
8
OEB
A
0
B
CSA
→
→
→
→
→
→
→
→
→
→
→
←
←
←
←
←
←
←
←
←
←
←
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
25
24
23
22
27
26
29
28
31
30
35
34
33
32
37
36
39
38
41
40
42
WEA
Not Ready A
OEA
I/O
7
A
GND
I/O
6
A
I/O
5
A
I/O
4
A
I/O
3
A
I/O
2
A
I/O
1
A
I/O
0
A
A
7
A
A
6
A
A
5
A
A
4
A
A
3
A
A
2
A
A
1
A
A
0
A
CSB
V
CC
Not Ready B
WEB
A
0
B
OEB
A
1
B
A
2
B
A
3
B
A
4
B
A
5
B
I/O
7
B
A
6
B
A
7
B
I/O
6
B
I/O
5
B
I/O
4
B
I/O
3
B
I/O
2
B
I/O
1
B
I/O
0
B
CHIP SELECT
INPUT
WRITE ENABLE
INPUT
NOT READY
OUTPUT
OUTPUT ENABLE
INPUT
A PORT
ADDRESS
INPUT
A PORT
DATA I/O
CHIP SELECT
INPUT
WRITE ENABLE
INPUT
NOT READY
OUTPUT
OUTPUT ENABLE
INPUT
B PORT
ADDRESS
INPUT
B PORT
DATA I/O
Outline42P4B
42P2R-A
M
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M66220SP | 256 x 8-BIT MAIL-BOX |
| M66222SP | POT THUMBWHEEL 5K OHM AUDIO |
| M66222FP | 128 x 8-BIT x 2 MAIL-BOX |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M66220SP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:256*8-BIT MAIL-BOX |
| M66221FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:256 x 9-BIT MAIL-BOX |
| M66221SP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:256 x 9-BIT MAIL-BOX |
| M66222FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:128 x 8-BIT x 2 MAIL-BOX |
| M66222SP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:128*8-BIT*2 MAIL-BOX |
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