AT49F002-50JI View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT49F002-50JI

2-Megabit (256K x 8) 5-volt Only Flash Memory

Atmel Corporation 

AT49F002(N)(T)

Command Definition (in Hex)(1)

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

6th Bus

Cycle

Addr Data

Read

Chip Erase

Sector Erase

1

Addr DOUT

6

5555 AA 2AAA 55 5555 80 5555 AA 2AAA 55 5555 10

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

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 00000H to 03FFFH for the AT49F002(N) and 3C000H to 3FFFFH for the

AT49F002(N)T

3. Either one of the Product ID Exit commands can be used.

4. SA = sector addresses:

For the AT49F002(N):

SA = 00000 to 03FFF for BOOT BLOCK

Nothing will happen and the device goes back to the read mode in 100 ns

SA = 04000 to 05FFF for PARAMETER BLOCK 1

SA = 06000 to 07FFF for PARAMETER BLOCK 2

SA = 08000 to 1FFFF for MAIN MEMORY ARRAY BLOCK 1

This command will erase - PB1, PB2 and MMB1

SA = 20000 to 3FFFF for MAIN MEMORY ARRAY BLOCK 2

For the AT49F002(N)T:

SA = 3C000 to 3FFFF for BOOT BLOCK

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

This command will erase - PB1, PB2 and MMB1

SA = 00000 to IFFFF for MAIN MEMORY ARRAY BLOCK 2

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 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.

5

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