w39f010 Winbond Electronics Corp America, w39f010 Datasheet - Page 18

• Manufacturer Part Number: w39f010
• Description: 128k U 8 Cmos Flash Memory
• Manufacturer: Winbond Electronics Corp America

7.7
Notes for software product identification/boot block lockout detection:
(1) Data Format: DQ7DQ0 (Hex); Address Format: A14A0 (Hex)
(2) A1A16 = V
(3) The device does not remain in identification and boot block lockout detection mode if power down.
(4) If the output data in DQ0 or DQ1= " 1 " the boot block programming lockout feature is activated; if the output data
(5) The device returns to standard operation mode.
(6) Optional 1-byte cycle (write F0 hex at XXXX address) can be used to exit the product identification/boot block lockout
detection.
in DQ0 or DQ1= " 0 ," the lockout feature is inactivated and the matched boot block can be programmed.
Software Product Identification and Boot Block Lockout Detection Flow Chart
Entry (1)
Identification
Product
address 5555
address 5555
address 2AAA
Pause 10 S
Load data AA
Load data 55
Load data 90
IL
; manufacture code is read for A0 = V
to
to
to
P
Identification
and Boot Block
Lockout Detection
Mode (3)
Product
Read address=02/1FFF2
for Bottom/Top
data: in DQ1="1" or "0"
for 16K Boot Block
Read address = 0001
Read address = 0000
data = DA
data = A1
IL
; device code is read for A0 = V
- 18 -
(4)
(2)
(2)
Product
Identification Exit(6)
IH
.
Normal Mode
address 5555
Load data 55
Load data F0
address 2AAA
Load data AA
address 5555
Pause 10 S
to
to
to
P
W39F010
(5)