W25X20BV WINBOND [Winbond], W25X20BV Datasheet - Page 8

• Manufacturer Part Number: W25X20BV
• Description: 1M-BIT, 2M-BIT AND 4M-BIT SERIAL FLASH MEMORY WITH 4KB SECTORS AND DUAL I/O SPI
• Manufacturer: WINBOND [Winbond]

DIO (IO0)
DO (IO1)
7. BLOCK DIAGRAM
/HOLD
/WP
CLK
/CS
xxEF00h
xxDF00h
xxD000h
xxFF00h
xxF000h
xxE000h
xx2F00h
xx1F00h
xx0F00h
xx2000h
xx1000h
xx0000h
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Block Segmentation
Write Control
Control Logic
Sector 15 (4KB)
Sector 14 (4KB)
Sector 13 (4KB)
Command &
Sector 2 (4KB)
Sector 1 (4KB)
Sector 0 (4KB)
Register
Status
Logic
SPI
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xxFFFFh
xxF0FFh
xxEFFFh
xxE0FFh
xxDFFFh
xxD0FFh
xx2FFFh
xx20FFh
xx1FFFh
xx10FFh
xx0FFFh
xx00FFh
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Figure 2. W25X10BV/20BV/40BV Block Diagram
Latch / Counter
Latch / Counter
Page Address
Byte Address
High Voltage
Generators
Data
- 8 -
Page Address
W25X10BV/20BV/40BV
07FF00h
070000h
04FF00h
040000h
03FF00h
030000h
01FF00h
010000h
00FF00h
000000h
Beginning
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And 256-Byte Page Buffer
Column Decode
Block 1 (64KB)
Block 0 (64KB)
Block 7 (64KB)
Block 4 (64KB)
Block 3 (64KB)
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Ending
Page Address
07FFFFh
04FFFFh
03FFFFh
01FFFFh
00FFFFh
0700FFh
0400FFh
0300FFh
0100FFh
0000FFh
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