Numonyx™ Wireless Flash Memory (W18)
1.2
Conventions
Table 2:
Conventions
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%.
“1.8 V”
Set
Refers to registers means the bit is a logical 1 and cleared means the bit is a logical 0.
Often used interchangeably to refer to the external signal connections on the package (ball is the term used for
VF BGA).
Pin and signal
Word
2 bytes or 16 bits.
Signal
Voltage
Names are in all CAPS (see Section 4.2, “Signal Descriptions” on page 18.)
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.
Contains 32-Kwords.
Main block
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.
Located at the lowest physical device address. This partition may be a main partition or a parameter partition.
Contains only main blocks.
Bottom
partition
Main partition
Parameter
partition
Contains a mixture of main blocks and parameter blocks.
Top parameter Has the parameter partition at the top of the memory map with the parameter blocks at the top of that
device
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.
Datasheet
8
November 2007
Order Number: 290701-18
NUMONYX [ NUMONYX B.V ]
