W19B320B Datasheet, PDF (28/51 Pages) Winbond – 32Mbit, 2.7~3.6-volt single bank CMOS flash memory

W19B320BT/B DATASHEET
7.5.4 Command Definitions
COMMAND
SEQUENCE
(note 1 )
Read (note 6)
Reset (note 7)
Normal
Program
Word
Byte
Word
Unlock Bypass
Byte
Unlock Bypass
Program (note 11)
Unlock Bypass Reset
(note12)
Chip Erase
Word
Byte
Sector Erase
Word
Byte
Manufacturer ^Word
Code
Byte
Device
Code
Word
Byte
Security Word
Sector Factory
Protect (Note _Byte
9)
CYCLE
1
1
4
3
2
2
6
6
4
4
4
FIRST
ADDR DATA
RA RD
XXX F0
555
AA
AAA
555
AA
AAA
XXX A0
XXX 90
555
AA
AAA
555
AA
AAA
555
AA
AAA
555
AA
AAA
555
AA
AAA
SECOND
ADDR DATA
2AA
55
555
2AA
55
555
PA PD
XXX 00
2AA
55
555
2AA
55
555
2AA
55
555
2AA
55
555
2AA
55
555
BUS CYCLES (note 2-5)
THIRD
FOURTH
ADDR DATA ADDR DATA
555
A0
PA
PD
AAA
555
20
AAA
555
555
80
AA
AAA
AAA
555
555
80
AA
AAA
AAA
555
DA
90 X00
AAA
55
AAA
90
X01
X02
(note
16)
555
X03
90
82/02
AAA
X06
FIFTH
SIXTH
ADDR DATA ADDR DATA
2AA
555
55
10
555
AAA
2AA
55 SA 30
555
Sector/Sect Word
or Block
Protect
4
Verify (note
10)
Byte
555
2AA
AA
55
AAA
555
555
X02
90
00/01
AAA
X04
Enter Security
Sector Region
Word
Byte
3
Exit Security
Sector Region
Word
Byte
4
Common Flash Word
Interface (CFI)
1
Query (note 15) ^Byte
555
2AA
AA
55
AAA
555
555
88
AAA
555
2AA
555
AA
55
90 XXX
00
AAA
555
AAA
55
98
AA
Legend:
X = Don’t Care
RA = Address of the memory location to be read.
PA = Address of the memory location to be programmed. Addresses latch on the falling edge of the #WE or #CE pulse, whichever
happens later.
PD = Data to be programmed at location PA. Data latches on the rising edge of #WE or #CE pulse, whichever happens first.
RD = Data read from location RA during read operation.
SA = Address of the sector to be verified (in AUTOSELECT mode) or erased. Address bits A20-A12 uniquely select any sector.
Notes:
1. See Bus Operations Table for details.
2. All values are in hexadecimal.
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Publication Release Date:Dec, 22, 2008
Revisionv A5