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PC48F4400P0R00 数据表(PDF) 56 Page - Numonyx B.V |
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PC48F4400P0R00 数据表(HTML) 56 Page - Numonyx B.V |
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56 / 102 page  Numonyx™ Wireless Flash Memory (W18) Datasheet November 2007 56 Order Number: 290701-18 Numonyx™ Wireless Flash Memory (W18) output on valid CLK edges following a minimum delay. However, for a synchronous non- array read, the same word of data will be output on successive clock edges until the burst length requirements are satisfied. See During synchronous read operations, WAIT indicates invalid data when asserted, and valid data when deasserted with respect to a valid clock edge. See Section 7.0, “AC Characteristics” on page 26 for additional details. 10.3 Read Array The Read Array command places (or resets) the partition in read-array mode and is used to read data from the flash memory array. Upon initial device power-up, or after reset (RST# transitions from VIL to VIH), all partitions default to asynchronous read- array mode. To read array data from the flash device, first write the Read Array command (FFh) to the CUI and specify the desired word address. Then read from that address. If a partition is already in read-array mode, issuing the Read Array command is not required to read from that partition. If the Read Array command is written to a partition that is erasing or programming, the device presents invalid data on the bus until the program or erase operation completes. After the program or erase finishes in that partition, valid array data can then be read. If an Erase Suspend or Program Suspend command suspends the WSM, a subsequent Read Array command places the addressed partition in read-array mode. The Read Array command functions independently of VPP. 10.4 Read Identifier The Read Identifier mode outputs the manufacturer/device identifier, block lock status, protection register codes, and Configuration Register data. The identifier information is contained within a separate memory space on the device and can be accessed along the 4-Mbit partition address range supplied by the Read Identifier command (90h) address. Reads from addresses in Table 24 retrieve ID information. Issuing a Read Identifier command to a partition that is programming or erasing places that partition’s outputs in read ID mode while the partition continues to program or erase in the background. Table 24: Device Identification Codes (Sheet 1 of 2) Item Address1 Data Description Base Offset Manufacturer ID Partition 00h 0089h Numonyx Device ID Partition 01h 8862h 32-Mbit, Top Parameter Device 8863h 32-Mbit, Bottom Parameter Device 8864h 64-Mbit, Top Parameter Device 8865h 64-Mbit, Bottom Parameter Device 8866h 128-Mbit, Top Parameter Device 8867h 128-Mbit, Bottom Parameter Device Block Lock Status(2) Block 02h D0 = 0 Block is unlocked D0 = 1 Block is locked Block Lock-Down Status(2) Block 02h D1 = 0 Block is not locked-down D1 = 1 Block is locked down Configuration Register Partition 05h Register Data |
类似零件编号 - PC48F4400P0R00 |
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类似说明 - PC48F4400P0R00 |
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