数据搜索系统,热门电子元器件搜索
  Chinese▼

Delete All
ON OFF
ALLDATASHEETCN.COM

X  

预览 PDF Download HTML

ATF1504ASV_05 Datasheet(数据表) 9 Page - ATMEL Corporation

部件型号  ATF1504ASV
说明  Low-voltage, Complex Programmable Logic Device
下载  31 Pages
Scroll/Zoom Zoom In 100% Zoom Out
制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

ATF1504ASV Datasheet(HTML) 9 Page - ATMEL Corporation

Back Button ATF1504ASV_05 数据表 HTML 5Page - ATMEL Corporation ATF1504ASV_05 数据表 HTML 6Page - ATMEL Corporation ATF1504ASV_05 数据表 HTML 7Page - ATMEL Corporation ATF1504ASV_05 数据表 HTML 8Page - ATMEL Corporation ATF1504ASV_05 数据表 HTML 9Page - ATMEL Corporation ATF1504ASV_05 数据表 HTML 10Page - ATMEL Corporation ATF1504ASV_05 数据表 HTML 11Page - ATMEL Corporation ATF1504ASV_05 数据表 HTML 12Page - ATMEL Corporation ATF1504ASV_05 数据表 HTML 13Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 9 page
background image
9
ATF1504ASV(L)
1409J–PLD–6/05
All power-down AC characteristic parameters are computed from external input or I/O
pins, with reduced-power bit turned on. For macrocells in reduced-power mode
(reduced-power bit turned on), the reduced-power adder, t
RPA, must be added to the AC
parameters, which include the data paths t
LAD, tLAC, tIC, tACL, tACH and tSEXP.
The ATF1504ASV(L) macrocell also has an option whereby the power can be reduced
on a per macrocell basis. By enabling this power-down option, macrocells that are not
used in an application can be turned down, thereby reducing the overall power con-
sumption of the device.
Each output also has individual slew rate control. This may be used to reduce system
noise by slowing down outputs that do not need to operate at maximum speed. Outputs
default to slow switching, and may be specified as fast switching in the design file.
Design Software
Support
ATF1504ASV(L) designs are supported by several industry standard third party tools.
Automated fitters allow logic synthesis using a variety of high-level description lan-
guages and formats.
Power-up Reset
The ATF1504ASV is designed with a power-up reset, a feature critical for state machine
initialization. At a point delayed slightly from V
CC crossing VRST, all registers will be ini-
tialized, and the state of each output will depend on the polarity of its buffer. However,
due to the asynchronous nature of reset and uncertainty of how V
CC actually rises in the
system, the following conditions are required:
1.
The V
CC rise must be monotonic,
2.
After reset occurs, all input and feedback setup times must be met before driving
the clock pin high, and,
3.
The clock must remain stable during T
D.
The ATF1504ASV has two options for the hysteresis about the reset level, V
RST, Small
and Large. To ensure a robust operating environment in applications where the device
is operated near 3.0V, Atmel recommends that during the fitting process users configure
the device with the Power-up Reset hysteresis set to Large. For conversions, Atmel
POF2JED users should include the flag “-power_reset” on the command line after “file-
name.POF”. To allow the registers to be properly reinitialized with the Large hysteresis
option selected, the following condition is added:
4.
If V
CC falls below 2.0V, it must shut off completely before the device is turned on
again.
When the Large hysteresis option is active, I
CC is reduced by several hundred micro-
amps as well.
Security Fuse Usage
A single fuse is provided to prevent unauthorized copying of the ATF1504ASV(L) fuse
patterns. Once programmed, fuse verify is inhibited. However, the 16-bit User Signature
remains accessible.




HTML 页

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31 


数据表 下载

Go To PDF Page


链接网址


Privacy Policy
ALLDATASHEETCN.COM
ALLDATASHEET是否为您带来帮助?  [ DONATE ]  

关于 Alldatasheet    |   广告服务   |   联系我们   |   隐私政策   |   书签   |   链接交换   |   制造商名单
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl