M25P20 Serial Flash Embedded Memory
Configuration and Memory Map
Configuration and Memory Map
Memory Configuration and Block Diagram
Each page of memory can be individually programmed; bits are programmed from 1 to
0. The device is sector or bulk-erasable, but not page-erasable; bits are erased from 0 to
1. The memory is configured as follows:
• 262,144 bytes (8 bits each)
• 4 sectors (256 pages each)
• 1024 pages (256 bytes each)
Figure 6: Block Diagram
HOLD#
W#
S#
Control Logic
High Voltage
Generator
C
DQ1
DQ0
I/O Shift Register
Address Register
and Counter
256 Byte
Data Buffer
Status
Register
3FFFFh
30000h
Y Decoder
20000h
Size of the
read-only
memory
area
10000h
00000h
256 bytes (page size)
X Decoder
000FFh
PDF: 09005aef8456656e
m25p20.pdf - Rev. A 2/13 EN
13
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2012 Micron Technology, Inc. All rights reserved.
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