Electronic Components Datasheet Search |
|
WED9LAPC2B16P8BC Datasheet(PDF) 8 Page - White Electronic Designs Corporation |
|
WED9LAPC2B16P8BC Datasheet(HTML) 8 Page - White Electronic Designs Corporation |
8 / 21 page 8 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs WED9LAPC2B16P8BC November 2001 Rev. 1 White Electronic Designs Corp. reserves the right to change products or specifications without notice. SDRAM CURRENT STATE TRUTH TABLE (continued) Current State Command Action Notes BRAS or PRAS BCAS or PCAS BWE or PWE BADDR12, BADDR13 or PBS BADDR or PADDR Description Refreshing L L L OP Code Mode Register Set ILLEGAL L L H X X Auto or Self Refresh ILLEGAL L H L X X Precharge ILLEGAL L H H BA Row Address Bank Activate ILLEGAL H L L BA Column Write ILLEGAL H L H BA Column Read ILLEGAL H H L X X Burst Termination No Operation; Idle after tRC H H H X X No Operation No Operation; Idle after tRC Mode Register Accessing L L L OP Code Mode Register Set ILLEGAL L L H X X Auto or Self Refresh ILLEGAL L H L X X Precharge ILLEGAL L H H BA Row Address Bank Activate ILLEGAL H L L BA Column Write ILLEGAL H L H BA Column Read ILLEGAL H H L X X Burst Termination ILLEGAL H H H X X No Operation No Operation; Idle after two clock cycles Notes: 1. Both Banks must be idle otherwise it is an illegal action. 2. The Current State refers only refers to one of the banks, if VCBS selects this bank then the action is illegal. If VCBS selects the bank not being referenced by the Current State then the action may be legal depending on the state of that bank. 3. The minimum and maximum Active time (tRAS) must be satisfied. 4. The VCRAS# to VCCAS# Delay (tRCD) must occur before the command is given. 5. Address VCADDR9/AP is used to determine if the Auto Precharge function is activated. 6. The command must satisfy any bus contention, bus turn around, and/or write recovery requirements. The command is illegal if the minimum bank-to-bank delay time (tRRD) is not satisfied. |
Similar Part No. - WED9LAPC2B16P8BC |
|
Similar Description - WED9LAPC2B16P8BC |
|
|
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 |