W25X20BV WINBOND [Winbond], W25X20BV Datasheet - Page 15

• 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]

9.2.2
Notes:
1. Data bytes are shifted with Most Significant Bit first. Byte fields with data in parenthesis “( )” indicate data being read from the
2. The Status Register contents will repeat continuously until /CS terminates the instruction.
3. See Manufacturer and Device Identification table for Device ID information.
4. The Device ID will repeat continuously until /CS terminates the instruction.
5. Dual Output and Dual I/O data
6. Dual Input Address
INSTRUCTION
NAME
Write Enable
Write Disable
Read Status
Register
Write Status
Register
Read Data
Fast Read
Fast Read Dual
Output
Fast Read Dual I/O
Page Program
Sector Erase (4KB)
Block Erase (32KB)
Block Erase (64KB)
Chip Erase
Power-down
Release Power-
down / Device ID
Manufacturer/
Device ID
Manufacturer/Device
ID by Dual I/O
JEDEC ID
Read Unique ID
device on the DO pin.
Instruction Set
IO0 = (D6, D4, D2, D0)
IO1 = (D7, D5, D3, D1)
IO0 = A22, A20, A18, A16, A14, A12, A10, A8 A6, A4, A2, A0, M6, M4, M2, M0
IO1 = A23, A21, A19, A17, A15, A13, A11, A9 A7, A5, A3, A1, M7, M5, M3, M1
(3)
BYTE 1
CODE
06h
04h
05h
01h
03h
0Bh
3Bh
BBh
02h
20h
52h
D8h
C7h/60h
B9h
ABh
90h
92h
9Fh
4Bh
(1)
(S7–S0)
A23–A16
A23–A16
A23–A16
A23–A16
A23–A16
dummy
dummy
(M7-M0)
Manufacturer
dummy
BYTE 2
S7–S0
A23–A16
A23-A8
A23–A16
A23-A8
(6)
(1)
BYTE 3
A15–A8
A15–A8
A15–A8
A7-A0, M7-
M0
A15–A8
A15–A8
A15–A8
A15–A8
dummy
dummy
A7-A0,
M[7:0]
(ID15-ID8)
Memory
Type
dummy
(6)
- 15 -
BYTE 4
A7–A0
A7–A0
A7–A0
(D7-D0, …)
A7–A0
A7–A0
A7–A0
A7–A0
dummy
00h
(MF[7:0],
ID[7:0])
(ID7-ID0)
Capacity
dummy
W25X10BV/20BV/40BV
Publication Release Date: August 20, 2009
(5)
BYTE 5
(D7–D0)
dummy
dummy
(D7–D0)
(ID7-ID0)
(M7-M0)
dummy
(4)
Preliminary -- Revision B
(D7–D0)
(D7-D0, …)
(Next byte)
(ID7-ID0)
(ID63-ID0)
BYTE 6
(Next byte)
(5)
N-BYTES
(2)
continuous
(Next Byte)
continuous
(one byte per
4 clocks,
continuous)
Up to 256
bytes
Read Unique
ID