Command Definition (in Hex)
Command
Sequence
Read
Chip Erase
Main Memory Erase
Word Program
Boot Block
Lockout
Product ID Entry
Product ID Exit
Bus
Cycles
1
6
6
4
6
3
3
1st Bus
Cycle
Addr
Addr
555
555
555
555
555
555
Data
D
OUT
AA
AA
AA
AA
AA
AA
AAA
AAA
AAA
AAA
AAA
AAA
55
55
55
55
55
55
555
555
555
555
555
555
80
80
A0
80
90
F0
555
555
Addr
555
AA
AA
D
IN
AA
AAA
55
555
40
AAA
AAA
55
55
555
555
10
30
2nd Bus
Cycle
Addr
Data
3rd Bus
Cycle
Addr
Data
4th Bus
Cycle
Addr
Data
5th Bus
Cycle
Addr
Data
6th Bus
Cycle
Addr
Data
Product ID Exit
1
xxx
F0
Notes: 1. The DATA FORMAT in each bus cycle is as follows: I/O15 - I/O8 (Don’t Care); I/O7 - I/O0 (Hex).
The ADDRESS FORMAT in each bus cycle is as follows: A11 - A0 (Hex); A11 - A15 (Don’t Care).
2. Since A11 is a Don’t Care, AAA can be replaced with 2AA.
3. The 8K word boot sector has the address range 0000H to 1FFFH.
4. Either one of the Product ID Exit commands can be used.
Absolute Maximum Ratings*
Temperature under Bias ................................ -55°C to +125°C
Storage Temperature ..................................... -65°C to +150°C
All Input Voltages
(including NC Pins)
with Respect to Ground ...................................-0.6V to +6.25V
All Output Voltages
with Respect to Ground .............................-0.6V to V
CC
+ 0.6V
Voltage on OE
with Respect to Ground ...................................-0.6V to +13.5V
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
device reliability.
4
AT49F1024A
3415B–FLASH–12/03
ATMEL [ ATMEL CORPORATION ]
