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PC48F4400P0Q00 数据表(PDF) 51 Page - Numonyx B.V |
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PC48F4400P0Q00 数据表(HTML) 51 Page - Numonyx B.V |
51 / 102 page November 2007 Datasheet Order Number: 290701-18 51 Numonyx™ Wireless Flash Memory (W18) Table 22: Command Codes and Descriptions (Sheet 1 of 2) Operation Code Device Command Description Read FFh Read Array Places selected partition in Read Array mode. 70h Read Status Register Places selected partition in Status Register read mode. After issuing this command, reading from the partition outputs SR data on DQ[15:0]. A partition automatically enters this mode after issuing the Program or Erase command. 90h Read Identifier Places the selected partition in Read ID mode. Device reads from partition addresses output manufacturer/device codes, Configuration Register data, block lock status, or protection register data on DQ[15:0]. 98h CFI Query Puts the addressed partition in CFI Query mode. Device reads from the partition addresses output CFI information on DQ[7:0]. 50h Clear Status Register The WSM can set the Status Register’s block lock (SR[1]), VPP (SR[3]), program (SR[4]), and erase (SR[5]) status bits, but it cannot clear them. SR[5:3,1] can only be cleared by a device reset or through the Clear Status Register command. Program 40h Word Program Setup This preferred program command’s first cycle prepares the CUI for a program operation. The second cycle latches address and data, and executes the WSM program algorithm at this location. Status register updates occur when CE# or OE# is toggled. A Read Array command is required to read array data after programming. 10h Alternate Setup Equivalent to a Program Setup command (40h). 30h EFP Setup This program command activates EFP mode. The first write cycle sets up the command. If the second cycle is an EFP Confirm command (D0h), subsequent writes provide program data. All other commands are ignored after EFP mode begins. D0h EFP Confirm If the first command was EFP Setup (30h), the CUI latches the address and data, and prepares the device for EFP mode. Erase 20h Erase Setup This command prepares the CUI for Block Erase. The device erases the block addressed by the Erase Confirm command. If the next command is not Erase Confirm, the CUI sets Status Register bits SR[5:4] to indicate command sequence error and places the partition in the read Status Register mode. D0h Erase Confirm If the first command was Erase Setup (20h), the CUI latches address and data, and erases the block indicated by the erase confirm cycle address. During program or erase, the partition responds only to Read Status Register, Program Suspend, and Erase Suspend commands. CE# or OE# toggle updates Status Register data. Suspend B0h Program Suspend or Erase Suspend This command, issued at any device address, suspends the currently executing program or erase operation. Status register data indicates the operation was successfully suspended if SR[2] (program suspend) or SR[6] (erase suspend) and SR[7] are set. The WSM remains in the suspended state regardless of control signal states (except RST#). D0h Suspend Resume This command, issued at any device address, resumes the suspended program or erase operation. Block Locking 60h Lock Setup This command prepares the CUI lock configuration. If the next command is not Lock Block, Unlock Block, or Lock-Down, the CUI sets SR[5:4] to indicate command sequence error. 01h Lock Block If the previous command was Lock Setup (60h), the CUI locks the addressed block. D0h Unlock Block If the previous command was Lock Setup (60h), the CUI latches the address and unlocks the addressed block. If previously locked-down, the operation has no effect. 2Fh Lock-Down If the previous command was Lock Setup (60h), the CUI latches the address and locks-down the addressed block. |
类似零件编号 - PC48F4400P0Q00 |
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类似说明 - PC48F4400P0Q00 |
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