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參數(shù)資料
| 型號： | AK7706VT |
| 英文描述： | Consumer IC |
| 中文描述： | 消費性IC |
| 文件頁數(shù)： | 7/52頁 |
| 文件大?。?/td> | 1085K |
| 代理商： | AK7706VT |
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[ASAHI KASEI] [AK7706]
<M0058-E-01>
1999/10
- 7 -
Pin No.
Pin name
I/O
Function
Classification
Microcomputer
interface
23
RQ
I
Microcomputer interface writes request pin.
RQ =”L”: Microcomputer interface enable.
24
SCLK
I
Microcomputer interface serial data clock pin.
When SCLK does not use, leave SCLK=”H”.
25
SI
I
Microcomputer interface serial data input and serial data output control pin.
When SI does not use, leave SI=”L”.
26
27
DVSS
DVDD
-
-
Ground pin for digital section.
Power supply pin for digital section
5V or 3.3V (typ)
Serial data output pin for Microcomputer interfaces.
Power supply
28
SO
O
29
RDY
O
Data write ready output pin for Microcomputer interface.
30
31
DRDY
LSEL
O
I
Output data ready pin for Microcomputer interface.
Input level selector pin.
When using 5.0V power supply, the level of this pin decides input pin level.
When this pin level is “H”, then TTL level input is available.
When using 3.3V power supply, this pin must leave open or connects to DVSS.
Microcomputer
interface
Level select
32
CAS
I
CAS Pin for external DRAM.
33
RAS
I
RAS pin for external DRAM
34
WE
O
Writes enable pin for external SRAM/DRAM.
35
~
39
40
41
42
~
53
54
55
56
A0 ~ A4
O
Address output for external RAM (A0~A4)
External RAM Inteface
DVSS
DVDD
-
-
Ground pin for digital section 0V.
Power supply pin for digital section 5V or 3.3V (typ)
Address output for external RAM (A5~A16 )
Power supply
A5 ~ A16
O
External RAM
Interface
DVSS
DVDD
-
-
Ground pin for digital section 0V.
Power supply pin for digital section 5V or 3.3V (typ)
Output enable signal output for external SRAM/DRAM.
Power supply
OE
O
External RAM
Interface
57
~
64
IO0 ~ IO7
I/O
Data input / output for external SRAM / DRAM.
These pins work as output pin unless READ data from external RAM instruction.
If it does not connect external RAM then leave open.
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