128Mb, 256Mb, 512Mb, 1Gb StrataFlash Memory
Programming Modes
Figure 10: Configurable Programming Regions: Control Mode and Object Mode
Main Array
256KB
256KB
256Kb Block
.
.
256KB
256KB
1KB
Programming region in object mode.
Address Bit A3 = 0: Allows up to 1KB
of data to be programmed.
256KB
256 programming regions of 1Kb in each 256Kb block
.
.
512 Bytes
A half
(control mode)
512 Bytes
B half
(erased)
.
.
.
Programming region in control mode
Address Bit A3 = 1: Allows up to
512 bytes of data to be programmed
to the A half by bit, byte, or word.
.
.
.
.
.
.
.
.
.
.
.
.
1KB
Programming region in object mode
.
.
.
256KB
256KB
1KB
Programming region in object mode
.
.
256KB
Object Mode
Object mode programming is invoked when one or more bits are programmed to zero
in the B-half of the programming region (A3 = 1).
Object mode allows up to 1KB to be stored in a programming region. Multiple regions
are used to store more than 1KB of information. If the object is less than 1KB, the un-
used content will remain as 0xFFFF (erased).
Object mode supports the following programming methods:
• Buffered programming (00E9h/00D0h)
• Buffered enhanced factory programming (0080h/00D0h)
Single-word programming (0041h) is not supported in object mode. To perform multi-
ple PROGRAM operations within a programming region, control mode must be used.
PDF: 09005aef8448483a
128_256_512_65nm_g18.pdf - Rev. F 8/11 EN
34
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