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參數(shù)資料
| 型號(hào)： | M66221SP |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | 256 x 9-BIT MAIL-BOX |
| 中文描述： | 256 × 9位企業(yè)郵箱 |
| 文件頁(yè)數(shù)： | 2/11頁(yè) |
| 文件大小： | 119K |
| 代理商： | M66221SP |
MITSUBISHI
DIGITAL ASSP
M66221SP/FP
256
×
9-BIT MAIL-BOX
2
Table 1 Mode Settings of Ports
(A
0
A ~ A
7
A
≠
A
0
B ~ A
7
B)
A port input
B port input
Flag
CSA
H
×
L
L
×
×
WEA
×
×
L
H
×
×
OEA
×
×
×
L
×
×
CSB
×
H
×
×
L
L
WEB
×
×
×
×
L
H
OEB
×
×
×
×
×
L
Not
Ready A
H
H
H
H
H
H
Not
Ready B
H
H
H
H
H
H
Operation
A port is set to the non-select mode.
B port is set to the non-select mode.
A port is set to the write mode for memory.
A port is set to the read mode for memory.
B port is set to the write mode for memory.
B port is set to the read mode for memory.
Table 2 Basic Functions of Ports
BLOCK DIAGRAM
CS
H
L
L
L
WE
×
L
H
H
OE
×
×
L
H
Mode
Non-select
Write
Read
I/O pin
High impedance
D
IN
D
OUT
High impedance
I
CC
Stand-by
Operation
Operation
Operation
Note 1:
×
indicates “L” or “H”. (Irrelevant)
“H” = High level, “L” = Low level
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
I/O
8
A
A
0
A
A
1
A
A
2
A
A
3
A
A
4
A
A
5
A
A
6
A
A
7
A
WRITE ENABLE
INPUT
CHIP SELECT
INPUT
OUTPUT ENABLE
INPUT
A PORT
DATA I/O
A PORT
ADDRESS
INPUT
9
8
CONTROL
CIRCUIT
I/O BUFFER
ROW/COLUMN
DECODER
ARBITRATION
CIRCUIT
MEMORY ARRAY OF
256-WORD
×
9-BIT
CONFIGURATION
CONTROL
CIRCUIT
I/O BUFFER
ROW/COLUMN
DECODER
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
I/O
8
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
WRITE ENABLE
INPUT
CHIP SELECT
INPUT
OUTPUT ENABLE
INPUT
B PORT
DATA I/O
B PORT
ADDRESS
INPUT
V
CC
9
8
GND
OEA
WEA
WEB
OEB
A
0
A
A
7
A
~
A
0
B
A
7
B
~
NOT READY
OUTPUT
NOT READY
OUTPUT
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| M66223FP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Mail Box That Incorporates a Complete CMOS Shared Memory Cell |
| M66230FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:A2RT(ADVANCED ASYNCHRONOUS RECEIVER & TRANSMITTER) |
| M66230P | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:A2RT(ADVANCED ASYNCHRONOUS RECEIVER & TRANSMITTER) |
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