AT49F1024A Просмотр технического описания (PDF) - Atmel Corporation
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AT49F1024A Datasheet PDF : 14 Pages
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Command Definition (in Hex)
Command
Sequence
Bus
Cycles
1st Bus
Cycle
Addr Data
2nd Bus
Cycle
Addr Data
3rd Bus
Cycle
Addr Data
4th Bus
Cycle
Addr Data
5th Bus
Cycle
Addr Data
Read
Chip Erase
1
Addr DOUT
6
555 AA AAA(2) 55 555 80 555 AA AAA 55
Main Memory Erase
6
555 AA AAA 55 555 80 555 AA AAA 55
Word Program
Boot Block
Lockout(3)
4
555 AA
AAA
55
555 A0 Addr DIN
6
555 AA AAA 55 555 80 555 AA AAA 55
Product ID Entry
Product ID Exit(4)
3
555 AA AAA 55 555 90
3
555 AA AAA 55 555 F0
Product ID Exit(4)
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.
6th Bus
Cycle
Addr Data
555 10
555 30
555 40
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 VCC + 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
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