Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

Preview PDF HTML

DP8422V Datasheet(PDF) 41 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # DP8422V
Description  microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers
PDF  60 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP8422V Datasheet(HTML) 41 Page - National Semiconductor (TI)

Back Button DP8422V Datasheet HTML 37Page - National Semiconductor (TI) DP8422V Datasheet HTML 38Page - National Semiconductor (TI) DP8422V Datasheet HTML 39Page - National Semiconductor (TI) DP8422V Datasheet HTML 40Page - National Semiconductor (TI) DP8422V Datasheet HTML 41Page - National Semiconductor (TI) DP8422V Datasheet HTML 42Page - National Semiconductor (TI) DP8422V Datasheet HTML 43Page - National Semiconductor (TI) DP8422V Datasheet HTML 44Page - National Semiconductor (TI) DP8422V Datasheet HTML 45Page - National Semiconductor (TI) Next Button
Zoom Inzoom in Zoom Outzoom out
 41 / 60 page
background image
100 Dual Accessing (DP8422V DP84T22) (Continued)
1032 LOCK Input
When the LOCK input is asserted the currently granted port
can ‘‘lock out’’ the other port through the insertion of wait
states to that port’s access cycle LOCK does not disable
refreshes it only keeps GRANTB in the same state even if
the other port requests an access as shown in
Figure 35
LOCK can be used by either port
TLF11109 – 61
FIGURE 35 LOCK Function
104 TRI-STATE OUTPUTS (DP84T22V Only)
This version is a metal option on the DP8420V21V22V-33
DRAM controllers It comes in a 84-pin PLCC and imple-
ments TRI-STATE output capabilities It has only one extra
pin OE When OE is asserted the output buffers are enabled
allowing the DRAM controller to interface to the DRAM ar-
ray
If OE is negated the output buffers are at TRI-STATE (high-
Z) making the board level circuit testing easier The time
penalty for the TRI-STATE option has been minimized mak-
ing this option attractive to high performance designs This
part is functionally compatible to the DP8422A-20 -25
TRI-STATE Output Drivers
TLF11109 – 62
41



Html Pages

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 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60


Datasheet Download

Go To PDF Page


Link URL



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : 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  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com