W49F020-70 Winbond, W49F020-70 Datasheet - Page 5

• Manufacturer Part Number: W49F020-70
• Description: 256K X 8 CMOS FLASH MEMORY
• Manufacturer: Winbond

TABLE OF OPERATING MODES
Operating Mode Selection
(V
TABLE OF COMMAND DEFINITION
Notes:
1. Address Format: A14 A0 (Hex); Data Format: DQ7-DQ0 (Hex)
2. Either one of the two Product ID Exit commands can be used.
Read
Write
Standby
Write Inhibit
Output Disable
Product ID
Read
Chip Erase
Byte Program
Boot Block Lockout
Product ID Entry
Product ID Exit
Product ID Exit
HH
= 12V
DESCRIPTION
COMMAND
MODE
5 )
(1)
(1)
NO. OF 1ST CYCLE 2ND CYCLE 3RD CYCLE 4TH CYCLE 5TH CYCLE 6TH CYCLE
Cycles
V
CE
V
V
V
V
X
X
X
IH
IL
IL
IL
IL
1
6
4
6
3
3
1
OE
V
V
V
V
V
V
X
X
IH
IH
IL
IL
IL
IL
A
5555 AA
5555 AA
5555 AA
5555 AA
5555 AA
XXXX F0
Addr. Data
IN
WE
V
V
V
V
D
V
X
X
X
OUT
IH
IH
IH
IH
IL
A
A
X
X
X
X
A0 = V
A9 = V
A0 = V
A9 = V
2AAA 55
2AAA 55
2AAA 55
2AAA 55
2AAA 55
Addr. Data
IN
IN
- 5 -
IL
HH
IL
HH
ADDRESS
; A1 A17 = V
; A1 A17 = V
5555 80
5555 A0
5555 80
5555 90
5555 F0
Addr. Data
PINS
Preliminary W49F020
IL
IL
Publication Release Date: October 1999
;
;
5555 AA
5555 AA
Addr. Data
A
IN
Dout
Din
High Z
High Z/D
High Z/D
High Z
Manufacturer Code DA (Hex)
Device Code 8C (Hex)
D
IN
2AAA 55
2AAA 55
Addr. Data
OUT
OUT
DQ.
Revision A1
Addr. Data
5555 10
5555 40