at49bv002an ATMEL Corporation, at49bv002an Datasheet - Page 7

• Manufacturer Part Number: at49bv002an
• Description: 2-megabit 256k X 8 Single 2.7-volt Battery-voltage Flash Memory
• Manufacturer: ATMEL Corporation

5. Command Definition Table
Notes:
6. Absolute Maximum Ratings*
3353G–FLASH–8/05
Command Sequence
Read
Chip Erase
Sector Erase
Byte Program
Boot Block Lockout
Product ID Entry
Product ID Exit
Product ID Exit
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
Voltage on OE
with Respect to Ground ...................................-0.6V to +13.5V
1. The DATA FORMAT in each bus cycle is as follows: I/O7 - I/O0 (Hex). The address format in each bus cycle is as follows:
2. Since A11 is don’t care, AAA can be replaced with 2AA.
3. The 16K byte boot sector has the address range 00000H to 03FFFH for the AT49BV002A(N) and 3C000H to 3FFFFH for the
4. Either one of the Product ID Exit commands can be used.
5. SA = sector addresses:
A11 - A0 (Hex); A11 - A17 (don’t care).
AT49BV002A(N)T
For the AT49BV002A(N):
SA = 00000 to 03FFF for BOOT BLOCK
SA = 04000 to 05FFF for PARAMETER BLOCK 1
SA = 06000 to 07FFF for PARAMETER BLOCK 2
SA = 08000 to FFFF for MAIN MEMORY ARRAY BLOCK 1
SA = 10000 to 1FFFF for MAIN MEMORY ARRAY BLOCK 2
SA = 20000 to 2FFFF for MAIN MEMORY ARRAY BLOCK 3
SA = 30000 to 3FFFF for MAIN MEMORY ARRAY BLOCK 4
For the AT49BV002A(N)T:
SA = 3C000 to 3FFFF for BOOT BLOCK
SA = 3A000 to 3BFFF for PARAMETER BLOCK 1
SA = 38000 to 39FFF for PARAMETER BLOCK 2
SA = 30000 to 37FFF for MAIN MEMORY ARRAY BLOCK 1
SA = 20000 to 2FFFF for MAIN MEMORY ARRAY BLOCK 2
SA = 10000 to 1FFFF for MAIN MEMORY ARRAY BLOCK 3
SA = 00000 to 0FFFF for MAIN MEMORY ARRAY BLOCK 4
(4)
(4)
(3)
Cycles
Bus
1
6
6
4
6
3
3
1
Addr
XXXX
Addr
555
555
555
555
555
555
1st Bus
Cycle
Data
D
AA
AA
AA
AA
AA
AA
F0
OUT
CC
AAA
Addr
AAA
AAA
AAA
AAA
AAA
+ 0.6V
2nd Bus
Cycle
(2)
Data
55
55
55
55
55
55
*NOTICE:
Addr
555
555
555
555
555
555
3rd Bus
Cycle
Data
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.
A0
F0
80
80
80
90
Addr
Addr
555
555
555
4th Bus
Cycle
AT49BV002A(N)(T)
Data
AA
AA
D
AA
IN
Addr
AAA
AAA
AAA
5th Bus
Cycle
Data
55
55
55
Addr
SA
555
555
6th Bus
(5)
Cycle
Data
10
30
40
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