Electronic Components Datasheet Search |
|
MR27V3266D Datasheet(PDF) 6 Page - OKI electronic componets |
|
MR27V3266D Datasheet(HTML) 6 Page - OKI electronic componets |
6 / 36 page 1 Semiconductor MR27V3266D August , 1999 Revision 2.4 32M Synchronous OTP 6 Note 1. Refer to "Mode register Field Table" for Address Codes, and Mode Transition Chart for operational state. After power on any command can be sampled at any cycle in Active Standby state. After "Mode register Set" command is sampled, no new command can be accepted for 3 CLK cycles. The /CS input must be kept high for the 3 CLK cycles to prevent unexpected sampling of a command. 2. The "Row Active" command is effective till new "Row Active" command is implemented. 3. The /WORD input is sampled simultaneously with "Read" command to select data width. A Double Word Burst(x32 ) or a Word Burst(x16) is selected by the /WORD input for each "Read" command. On condition of constant voltage level on /Word pin, organization is fixed to either x16 or x32. "Read" command ends it's implementation by itself at the finishing cycle of the burst read. 4. Since OTP technology uses static sense amplifiers, the "Precharge" command is not required however, due to customer request for the similarity of logical input code with SDRAM command, the name of "Precharge" is adopted. Function of "Precharge" command and "Burst Stop" command is only to stop the burst read cycles delayed by CAS Latency. 5. Sampled low level CKE disables CLK buffer to suspend internal clock signals at the next rising edge of CLK. Sampled high level CKE enables internal clock at the next rising edge of CLK. Low level CKE sampled in the period from the simultaneous cycle with a "Read" command till the end of the burst read cycle is distinguished with internal command controller from the low level CKE sampled in Active Standby state not to stop data sensing and burst read operation those consume power. 6. Low level CKE sampled in Active Standby state cuts power dissipation to be in Power Down state. High level CKE sampled in Power Down state enables internal CKE to be in Active Standby state with preserved row address. ( H=Logical high, L=Logical low, X=Don't Care, L of STO includes pin open due to internal pull down resistor ) ( CKEn expresses the logical level at the simultaneous cycle with a command. ) COMMAND NAME No Operation Mask Output Read Output Power Down (on Active Standby) Clock Suspend (on Read) Precharge Burst Stop Read Double Word (x32) Read Word (x16) Mode Register Set FUNCTION Write on SDRAM High-Z Output Output Enable Entry Entry Burst Stop Burst Stop Column Address Latch Trigger Burst Read Column Address Latch Trigger Burst Read Row Address Latch Mode Register Set Row Active Illegal on SDRAM Self Refresh on SDRAM CKEn-1 Notes STO /WORD Add. DQM /MR /CAS /RAS /CS CKEn H H H H H H H H H H H H H H L H L H H H H H H H HH H H H H H H H H H H H L L L L L L L L L L L L L L LH H L L L L L L L L L L L L L L L L L L L L L L L L L L L L L L Exit Exit X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X L L L X X X X X X X X X X X X X X X X X X X X X X Code RA CA CA X X X X X X X X X X X X X X X X X X X X X X X X X X X X 1 6 6 5 5 4 4 3 3 2 FUNCTION TABLE FOR SYNCHRONOUS READ L |
Similar Part No. - MR27V3266D |
|
Similar Description - MR27V3266D |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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 |