- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384043 > UPD485505G-25 (NEC Corp.) LINE BUFFER 5K-WORD BY 8-BIT PDF資料下載
參數(shù)資料
| 型號： | UPD485505G-25 |
| 廠商： | NEC Corp. |
| 英文描述： | LINE BUFFER 5K-WORD BY 8-BIT |
| 中文描述： | 行緩沖區(qū)5K - Word的8位 |
| 文件頁數(shù)： | 16/20頁 |
| 文件大?。?/td> | 174K |
| 代理商： | UPD485505G-25 |
μ
PD485505
16
Data Sheet M10059EJ7V0DS00
4.3 Double-speed Conversion
Figure 4.6
shows an example timing chart of double-speed and twice reading operation (f
R
= 2f
W
, 5,048 by
2 cycle) for a write operation (f
W
= 5,048 cycle).
Caution
The read operation collide with the write operation on the same line, last n bits output data
(5,048–n to 5,048) in the first read operation will be undefined (see Figure 4.6 Double-speed
Conversion Timing Chart).
Undefined bits mentioned above depend on the cycle time.
Read cycle time
Undefined bits
25 ns
21 bits
35 ns
15 bits
Figure 4.6 Double-speed Conversion Timing Chart
Remark
RE, WE = “L” level
1H
(5,048 Cycle)
2H
(5,048 Cycle)
0
1
2
5046 5047
0'
1'
2'
5046' 5047'
0"
0
1
2
5046 5047
0'
1'
2'
5046'
5047'
0"
1H
(5,048 Cycle)
First read cycle
1H
(5,048 Cycle)
Second read cycle
2H
(5,048 Cycle)
First read cycle
n bits output data will be undefined.
n bits output data will be undefined.
0
1
2
5046 5047
0
1
2
5046 5047
0' 1' 2'
5046' 5047'
0' 1'
t
AC
WCK
(Input)
RSTW
(Input)
D
IN
(Input)
RCK
(Input)
RSTR
(Input)
D
OUT
(Output)
相關PDF資料 |
PDF描述 |
|---|---|
| UPD485505G-35 | LINE BUFFER 5K-WORD BY 8-BIT |
| UPD4990A | SERIAL I/O CALENDAR & CLOCK CMOS LSI |
| UPD4990AC | SERIAL I/O CALENDAR & CLOCK CMOS LSI |
| UPD4990AG | SERIAL I/O CALENDAR & CLOCK CMOS LSI |
| UPD63210 | 16-BIT D/A CONVERTER WITH BUILT-IN DIGITAL FILTER FOR AUDIO |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| uPD485505G-25-A | 制造商:Renesas Electronics 功能描述:18ns 5V Cut Tape |
| UPD485505G-35-A | 制造商:Renesas Electronics 功能描述:25ns 5V Cut Tape |
| UPD485506G5-25-7JF | 制造商:NEC Electronics Corporation 功能描述: 制造商:NEC Electronics Corporation 功能描述:FIELD/FRAME/LINE MEMORY, 44 Pin, Plastic, TSOP |
| UPD485506G5-25-7JF-A | 制造商:Renesas Electronics 功能描述:18ns 5V Cut Tape |
| UPD48576218FF-E24-DW1-A | 制造商:Renesas Electronics Corporation 功能描述:UPD48576218FF-E24-DW1-A - Trays |
發(fā)布緊急采購，3分鐘左右您將得到回復。