w25x32a Winbond Electronics Corp America, w25x32a Datasheet - Page 9

• Manufacturer Part Number: w25x32a
• Description: 32m-bit Serial Flash Memory With 4kb Sectors And Dual Output Spi
• Manufacturer: Winbond Electronics Corp America

9 BLOCK DIAGRAM
/HOLD
/HOLD
/WP
/WP
CLK
CLK
DIO
DIO
/CS
/CS
DO
DO
xxDF00h
xxDF00h
xxEF00h
xxEF00h
xxE000h
xxE000h
xxD000h
xxD000h
xxFF00h
xxFF00h
xxF000h
xxF000h
xx2F00h
xx2F00h
xx1F00h
xx1F00h
xx0F00h
xx0F00h
xx2000h
xx2000h
xx1000h
xx1000h
xx0000h
xx0000h
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Block Segmentation
Block Segmentation
Write Control
Write Control
Control Logic
Control Logic
Sector 15 (4KB)
Sector 15 (4KB)
Sector 14 (4KB)
Sector 14 (4KB)
Sector 13 (4KB)
Sector 13 (4KB)
Command &
Command &
Sector 2 (4KB)
Sector 2 (4KB)
Sector 1 (4KB)
Sector 1 (4KB)
Sector 0 (4KB)
Sector 0 (4KB)
Register
Register
Status
Status
Logic
Logic
SPI
SPI
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Figure 2. W25X32A Serial Flash Memory Block Diagram
xxFFFFh
xxFFFFh
xxF0FFh
xxF0FFh
xxEFFFh
xxEFFFh
xxE0FFh
xxE0FFh
xxDFFFh
xxDFFFh
xxD0FFh
xxD0FFh
xx2FFFh
xx2FFFh
xx20FFh
xx20FFh
xx1FFFh
xx1FFFh
xx10FFh
xx10FFh
xx0FFFh
xx0FFFh
xx00FFh
xx00FFh
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Latch / Counter
Latch / Counter
Latch / Counter
Latch / Counter
Page Address
Page Address
Byte Address
Byte Address
High Voltage
High Voltage
Generators
Generators
Data
Data
- 9 -
Page Address
Page Address
3FFF00h
3FFF00h
3F0000h
3F0000h
200000h
200000h
1FFF00h
1FFF00h
1F0000h
1F0000h
100000h
100000h
0FFF00h
0FFF00h
0F0000h
0F0000h
000000h
000000h
20FF00h
20FF00h
10FF00h
10FF00h
00FF00h
00FF00h
Beginning
Beginning
Publication Release Date: August 24, 2008
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And 256-Byte Page Buffer
And 256-Byte Page Buffer
Block 63 (64KB)
Block 63 (64KB)
Block 32 (64KB)
Block 32 (64KB)
Block 31 (64KB)
Block 31 (64KB)
Block 16 (64KB)
Block 16 (64KB)
Block 15 (64KB)
Block 15 (64KB)
Column Decode
Column Decode
Block 0 (64KB)
Block 0 (64KB)
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Preliminary - Revision A
Ending
Ending
Page Address
Page Address
3FFFFFh
3FFFFFh
20FFFFh
20FFFFh
1FFFFFh
1FFFFFh
10FFFFh
10FFFFh
0FFFFFh
0FFFFFh
00FFFFh
00FFFFh
3F00FFh
3F00FFh
2000FFh
2000FFh
1F00FFh
1F00FFh
1000FFh
1000FFh
0F00FFh
0F00FFh
0000FFh
0000FFh
W25X32A
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