AT49BV040 ATMEL Corporation, AT49BV040 Datasheet - Page 4

• Manufacturer Part Number: AT49BV040
• Description: 4-Megabit 512K x 8 Single 2.7-volt Battery-Voltage Flash Memory
• Manufacturer: ATMEL Corporation

Command Definition (in Hex)
Notes:
Absolute Maximum Ratings*
4
Command
Sequence
Read
Chip 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.
2.
The 16K byte boot sector has the address range 00000H to 03FFFH for the AT49BV/LV040 and 7C000H to 7FFFFH for the
AT49BV/LV040T.
Either one of the Product ID exit commands can be used.
(2)
(2)
AT49BV/LV040
(1)
Cycles
Bus
1
6
4
6
3
3
1
XXXX
Addr
5555
5555
5555
5555
5555
Addr
1st Bus
Cycle
D
Data
AA
AA
AA
AA
AA
F0
OUT
CC
2AAA
2AAA
2AAA
2AAA
2AAA
Addr
2nd Bus
+ 0.6V
Cycle
Data
55
55
55
55
55
*NOTICE:
Addr
5555
5555
5555
5555
5555
3rd Bus
Cycle
Data
A0
F0
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.
80
80
90
Stresses beyond those listed under “Absolute Maxi-
Addr
5555
5555
Addr
4th Bus
Cycle
Data
D
AA
AA
IN
2AAA
2AAA
Addr
5th Bus
Cycle
Data
55
55
Addr
5555
5555
6th Bus
Cycle
Data
10
40