参数资料
型号: W25Q20BWSNIP
厂商: WINBOND ELECTRONICS CORP
元件分类: PROM
英文描述: 2M X 1 SPI BUS SERIAL EEPROM, PDSO8
封装: 0.300 INCH, GREEN, PLASTIC, DIP-8
文件页数: 69/70页
文件大小: 2106K
代理商: W25Q20BWSNIP
W25Q20BW
- 8 -
6. BLOCK DIAGRAM
Figure 2. W25Q20BW Serial Flash Memory Block Diagram
00FF00h
00FFFFh
Block 0 (64KB)
000000h
0000FFh
01FF00h
01FFFFh
Block 1 (64KB)
010000h
0100FFh
03FF00h
03FFFFh
Block 3 (64KB)
030000h
0300FFh
003000h
0030FFh
002000h
0020FFh
001000h
0010FFh
000000h
0000FFh
Column Decode
And 256-Byte Page Buffer
Beginning
Page Address
Ending
Page Address
W25Q20BW
SPI
Command &
Control Logic
Byte Address
Latch / Counter
Status
Register
Write Control
Logic
Page Address
Latch / Counter
DO (IO1)
DI (IO0)
/CS
CLK
/HOLD (IO3)
/WP (IO2)
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 3 - 0
W
rite
Protect
Lo
gi
cand
R
ow
De
co
de
00FF00h
00FFFFh
Block 0 (64KB)
000000h
0000FFh
01FF00h
01FFFFh
Block 1 (64KB)
010000h
0100FFh
03FF00h
03FFFFh
Block 3 (64KB)
030000h
0300FFh
003000h
0030FFh
002000h
0020FFh
001000h
0010FFh
000000h
0000FFh
Column Decode
And 256-Byte Page Buffer
Beginning
Page Address
Ending
Page Address
W25Q20BW
SPI
Command &
Control Logic
Byte Address
Latch / Counter
Status
Register
Write Control
Logic
Page Address
Latch / Counter
DO (IO1)
DI (IO0)
/CS
CLK
/HOLD (IO3)
/WP (IO2)
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 3 - 0
W
rite
Protect
Lo
gi
cand
R
ow
De
co
de
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