W19B(L)320ST/B
7.4 Command Definitions
BUS CYCLES (NOTE 2-5)
THIRD FOURTH
ADDR DATA ADDR DATA ADDR DATA ADDR DATA ADDR DATA ADDR DATA
COMMAND SEQUENCE
CYCLE
FIRST
SECOND
FIFTH
SIXTH
(NOTE 1)
RA
XXX
555
AAA
555
RD
F0
Read (note 6)
Reset (note 7)
1
1
2AA
555
2AA
555
555
AAA
555
Word
Byte
Word
Byte
AA
AA
55
55
A0
20
PA
PD
Normal Program
4
Unlock Bypass
3
AAA
AAA
Unlock Bypass Program
XXX
XXX
A0
90
PA
PD
00
2
2
6
(Note 11)
Unlock Bypass Reset
(note12)
XXX
555
AAA
555
AAA
XXX
XXX
555
AAA
555
AAA
555
2AA
555
2AA
555
555
AAA
555
555
AAA
555
2AA
555
2AA
555
555
AAA
Word
Byte
AA
AA
55
55
80
80
AA
AA
55
55
10
30
Chip Erase
Word
Sector Erase
Byte
Erase Suspend (note 13)
Erase Resume (note 14)
SA
6
AAA
AAA
B0
30
1
1
2AA
555
2AA
555
2AA
555
AAA
55
AAA
555
Word
Byte
DA
Manufacturer
AA
AA
55
55
90
90
X00
4
Code
X01
X02
X03
Word
Device Code
Byte
(note 16)
99/19
4
Security Sector Word
AA
55
90
4
4
Factory Protect
AAA
555
AAA
X06
Byte
(Note 9)
Sector/Secto
Word
555
2AA
555
X02
r Block
AA
55
90
00/01
Protect
Verify (note
AAA
555
AAA
X04
10)
Byte
555
AAA
555
AAA
55
2AA
555
2AA
555
555
AAA
555
Word
Byte
Word
Byte
Enter Security
Sector Region
AA
AA
55
55
88
90
3
4
Exit Security
XXX
00
Sector Region
AAA
Common Flash
Interface (CFI)
Query (note 15)
Word
98
1
AA
Byte
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.
Publication Release Date: March 23, 2004
- 29 -
Revision A2
WINBOND [ WINBOND ]
