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PC48F4400P0VB0 数据表(PDF) 53 Page - Numonyx B.V |
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PC48F4400P0VB0 数据表(HTML) 53 Page - Numonyx B.V |
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53 / 102 page  November 2007 Datasheet Order Number: 290701-18 53 Numonyx™ Wireless Flash Memory (W18) 9.3 Command Sequencing When issuing a 2-cycle write sequence to the flash device, a read operation is allowed to occur between the two write cycles. The setup phase of a 2-cycle write sequence places the addressed partition into read-status mode, so if the same partition is read before the second “confirm” write cycle is issued, Status Register data will be returned. Reads from other partitions, however, can return actual array data assuming the addressed partition is already in read-array mode. Figure 23 and Figure 24 illustrate these two conditions. Protection Protection Program 2 Write PA C0h Write PA PD Lock Protection Program 2 Write LPA C0h Write LPA FFFDh Configuration Set Configuration Register 2 Write CD 60h Write CD 03h Notes: 1. First-cycle command addresses should be the same as the operation’s target address. Examples: the first-cycle address for the Read Identifier command should be the same as the Identification code address (IA); the first-cycle address for the Word Program command should be the same as the word address (WA) to be programmed; the first-cycle address for the Erase/Program Suspend command should be the same as the address within the block to be suspended; etc. XX = Any valid address within the device. IA = Identification code address. BA = Block Address. Any address within a specific block. LPA = Lock Protection Address is obtained from the CFI (through the CFI Query command). The Numonyx Wireless Flash Memory (W18) family’s LPA is at 0080h. PA = User programmable 4-word protection address. PnA = Any address within a specific partition. PBA = Partition Base Address. The very first address of a particular partition. QA = CFI code address. WA = Word address of memory location to be written. 2. SRD = Status register data. WD = Data to be written at location WA. IC = Identifier code data. PD = User programmable 4-word protection data. QD = Query code data on DQ[7:0]. CD = Configuration register code data presented on device addresses A[15:0]. A[MAX:16] address bits can select any partition. See Table 31, “Read Configuration Register Descriptions” on page 78 for Configuration Register bits descriptions. 3. Commands other than those shown above are reserved by Numonyx for future device implementations and should not be used. Table 23: Bus Cycle Definitions Operation Command Bus Cycles First Bus Cycle Second Bus Cycle Oper Addr1 Data2,3 Oper Addr1 Data2,3 |
类似零件编号 - PC48F4400P0VB0 |
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类似说明 - PC48F4400P0VB0 |
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