AT49F040B ATMEL [ATMEL Corporation], AT49F040B Datasheet - Page 7

• Manufacturer Part Number: AT49F040B
• Description: 4-megabit (512K x 8) 5-volt Only Flash Memory
• Manufacturer: ATMEL [ATMEL Corporation]

5. Command Definition Table
Notes:
6. Absolute Maximum Ratings*
3606A–FLASH–12/05
Command
Sequence
Read
Chip Erase
Sector Erase
Byte Program
Boot Sector 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 A9
with Respect to Ground ...................................-0.6V to +11.5V
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.
4. Either one of the Product ID Exit commands can be used.
5. SA = sector addresses:
A11 - A0 (Hex); A11 - A18 (don’t care).
SA = 00000 to 03FFF for BOOT SECTOR
SA = 04000 to 05FFF for PARAMETER SECTOR 1
SA = 06000 to 07FFF for PARAMETER SECTOR 2
SA = 08000 to FFFF for MAIN MEMORY ARRAY SECTOR 1
SA = 10000 to 1FFFF for MAIN MEMORY ARRAY SECTOR 2
SA = 20000 to 2FFFF for MAIN MEMORY ARRAY SECTOR 3
SA = 30000 to 3FFFF for MAIN MEMORY ARRAY SECTOR 4
SA = 40000 to 4FFFF for MAIN MEMORY ARRAY SECTOR 5
SA = 50000 to 5FFFF for MAIN MEMORY ARRAY SECTOR 6
SA = 60000 to 6FFFF for MAIN MEMORY ARRAY SECTOR 7
SA = 70000 to 7FFFF for MAIN MEMORY ARRAY SECTOR 8
(4)
(4)
(3)
Cycles
Bus
1
6
6
4
6
3
3
1
Addr
Addr
XXX
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
80
80
80
90
F0
Addr
Addr
555
555
555
4th Bus
Cycle
Data
AA
AA
D
AA
IN
Addr
AAA
AAA
AAA
5th Bus
Cycle
AT49F040B
Data
55
55
55
Addr
SA
555
555
6th Bus
(5)
Cycle
Data
10
30
40
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