FOR MOBILE APPLICATIONS
W25Q256FV
Publication Release Date: May 13, 2012
- 8 - Preliminary - Revision M1
5.
BLOCK DIAGRAM
Figure 2. W25Q256FV Serial Flash Memory Block Diagram
003000h 0030FFh
002000h 0020FFh
001000h 0010FFh
Column Decode
And 256-Byte Page Buffer
Beginning
Page Address
Ending
Page Address
W
25Q256FV
SPI
Command &
Control Logic
Byte Address
Latch / Counter
Status
Register
Write Control
Logic
Page Address
Latch / Counter
DO (IO
1
)
DI (IO
0
)
/CS
CLK
/HOLD (IO
3
)
or RESET
/WP (IO
2
)
High Voltage
Generators
xx0F00h xx0FFFh
• Sector 0 (4KB) •
xx0000h xx00FFh
xx1F00h xx1FFFh
• Sector 1 (4KB) •
xx1000h xx10FFh
xx2F00h xx2FFFh
• Sector 2 (4KB) •
xx2000h xx20FFh
•
•
•
xxDF00h xxDFFFh
• Sector 13 (4KB) •
xxD000h xxD0FFh
xxEF00h xxEFFFh
• Sector 14 (4KB) •
xxE000h xxE0FFh
xxFF00h xxFFFFh
• Sector 15 (4KB) •
xxF000h xxF0FFh
Block Segmentation
Data
Security Register 1 - 3
W
ri
te
P
rotect
Logi
c and
R
o
w
D
e
code
000000h 0000FFh
SFDP Register
0000FF00h 0000FFFFh
• Block 0 (64KB) •
00000000h 000000FFh
•
•
•
007FFF00h 007FFFFFh
• Block 127 (64KB) •
007F0000h 007F00FFh
0080FF00h 0080FFFFh
• Block 128 (64KB) •
00800000h 008000FFh
•
•
•
00FFFF00h 00FFFFFFh
• Block 255 (64KB) •
00FF0000h 00FF00FFh
0100FF00h 0100FFFFh
• Block 256 (64KB) •
01000000h 010000FFh
•
•
•
01FFFF00h 01FFFFFFh
• Block 511 (64KB) •
01FF0000h 01FF00FFh