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290701-18 Datasheet(PDF) 8 Page - Numonyx B.V |
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290701-18 Datasheet(HTML) 8 Page - Numonyx B.V |
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8 / 102 page  Numonyx™ Wireless Flash Memory (W18) Datasheet November 2007 8 Order Number: 290701-18 Numonyx™ Wireless Flash Memory (W18) 1.2 Conventions Table 2: Conventions “1.8 V” Refers to the full VCC voltage range of 1.7 V – 1.95 V (except where noted) and “VPP = 12 V” refers to 12 V ±5%. Set Refers to registers means the bit is a logical 1 and cleared means the bit is a logical 0. Pin and signal Often used interchangeably to refer to the external signal connections on the package (ball is the term used for VF BGA). Word 2 bytes or 16 bits. Signal Names are in all CAPS (see Section 4.2, “Signal Descriptions” on page 18.) Voltage Applied to the signal is subscripted for example VPP. Throughout this document, references are made to top, bottom, parameter, and partition. To clarify these references, the following conventions have been adopted: Block A group of bits (or words) that erase simultaneously with one block erase instruction. Main block Contains 32-Kwords. Parameter block Contains 4-Kwords. Block Base Address (BBA) The first address of a block. Partition A group of blocks that share erase and program circuitry and a common Status Register. Partition Base Address (PBA) The first address of a partition. For example, on a 32-Mbit top-parameter device partition number 5 has a PBA of 0x140000. Top partition Located at the highest physical device address. This partition may be a main partition or a parameter partition. Bottom partition Located at the lowest physical device address. This partition may be a main partition or a parameter partition. Main partition Contains only main blocks. Parameter partition Contains a mixture of main blocks and parameter blocks. Top parameter device Has the parameter partition at the top of the memory map with the parameter blocks at the top of that partition. This was formerly referred to as a Top-Boot device. Bottom parameter device (BPD) Has the parameter partition at the bottom of the memory map with the parameter blocks at the bottom of that partition. This was formerly referred to as a Bottom-Boot Block flash device. |
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