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AT49F002T Datasheet(PDF) 5 Page - ATMEL Corporation

Part No. AT49F002T
Description  2-Megabit 256K x 8 5-volt Only CMOS Flash Memory
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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AT49F002T Datasheet(HTML) 5 Page - ATMEL Corporation

 
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AT49F002(N)T
5
Absolute Maximum Ratings*
Temperature Under Bias ................................ -55°C to +125°C
*NOTICE:
Stresses beyond those listed under “Absolute Maxi-
mum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional
operation of the device at these or any other condi-
tions beyond those indicated in the operational sec-
tions of this specification is not implied. Exposure to
absolute maximum rating conditions for extended
periods may affect device reliability.
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
Command Definition (in Hex)(1)
Notes:
1. The DATA FORMAT in each bus cycle is as follows: I/O7 - I/O0 (Hex)
2. The 16K byte boot sector has the address range 3C000H to 3FFFFH.
3. Either one of the Product ID Exit commands can be used.
4. SA = sector addresses:
SA = 3C000 to 3FFFF for BOOT BLOCK
If the boot block is not locked out, this command will erase - BOOT BLOCK, PB1, PB2 and MMB1
If the boot block is locked out, nothing will happen and the device goes back to the read mode in 100 ns
SA = 3A000 to 3BFFF for PARAMETER BLOCK 1
SA = 38000 to 39FFF for PARAMETER BLOCK 2
SA = 20000 to 37FFF for MAIN MEMORY ARRAY BLOCK 1
If the boot block is not locked out, this command will erase - BOOT BLOCK, PB1, PB2 and MMB1
If the boot block is locked out, this command will erase - PB1, PB2 and MMB1
SA = 00000 to IFFFF for MAIN MEMORY ARRAY BLOCK 2
Command
Sequence
Bus
Cycles
1st Bus
Cycle
2nd Bus
Cycle
3rd Bus
Cycle
4th Bus
Cycle
5th Bus
Cycle
6th Bus
Cycle
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Addr
Data
Read
1
Addr
DOUT
Chip Erase
6
5555
AA
2AAA
55
5555
80
5555
AA
2AAA
55
5555
10
Sector Erase
6
5555
AA
2AAA
55
5555
80
5555
AA
2AAA
55
SA(4)
30
Byte Program
4
5555
AA
2AAA
55
5555
A0
Addr
DIN
Boot Block Lockout(2)
6
5555
AA
2AAA
55
5555
80
5555
AA
2AAA
55
5555
40
Product ID Entry
3
5555
AA
2AAA
55
5555
90
Product ID Exit(3)
3
5555
AA
2AAA
55
5555
F0
Product ID Exit(3)
1
XXXX
F0


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