Electronic Components Datasheet Search |
|
X9319WS8I Datasheet(PDF) 7 Page - Xicor Inc. |
|
X9319WS8I Datasheet(HTML) 7 Page - Xicor Inc. |
7 / 10 page 7 of 10 REV 1.7 7/10/03 www.xicor.com X9319 INSTRUCTIONS AND PROGRAMMING The INC, U/D and CS inputs control the movement of the wiper along the resistor array. With CS set LOW the device is selected and enabled to respond to the U/D and INC inputs. HIGH to LOW transitions on INC will increment or decrement (depending on the state of the U/D input) the seven bit counter. The output of this counter is decoded to select one of one hundred wiper positions along the resistive array. The value of the counter is stored in nonvolatile mem- ory whenever CS transitions HIGH while the INC input is also HIGH. The system may select the X9319, move the wiper and deselect the device without having to store the latest wiper position in nonvolatile memory. After the wiper movement is performed as described above and once the new position is reached, the system must keep INC LOW while taking CS HIGH. The new wiper position will be maintained until changed by the system or until a powerup/down cycle recalled the previously stored data. This procedure allows the system to always power-up to a preset value stored in nonvolatile mem- ory; then during system operation minor adjustments could be made. The adjustments might be based on user preference, system parameter changes due to temperature drift, etc. The state of U/D may be changed while CS remains LOW. This allows the host system to enable the device and then move the wiper up and down until the proper trim is attained. MODE SELECTION CS INC U/D Mode L H Wiper up L L Wiper down HX Store wiper position to nonvolatile memory H X X Standby L X No store, return to standby L H Wiper Up (not recommended) LL Wiper Down (not recommended) |
Similar Part No. - X9319WS8I |
|
Similar Description - X9319WS8I |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
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 |