AT49F040-12 Просмотр технического описания (PDF) - Atmel Corporation

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AT49F040-12

4-Megabit (512K x 8) 5-volt Only CMOS Flash Memory

Atmel Corporation 

Command Definition (in Hex)

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

Chip Erase

1

Addr DOUT

6

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

Byte Program

Boot Block Lockout(1)

4

5555 AA 2AAA 55 5555 A0 Addr DIN

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(2)

3

5555 AA 2AAA 55 5555 F0

Product ID Exit(2)

1

XXXX F0

Notes: 1. The 16K byte boot sector has the address range 00000H to 03FFFH for the AT49F040 and 7C000H to 7FFFFH for the

AT49F040T.

2. Either one of the Product ID exit commands can be used.

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

Maximum Ratings” may cause permanent dam-

age to the device. This is a stress rating only and

functional operation of the device at these or any

other conditions beyond those indicated in the

operational sections of this specification is not

implied. Exposure to absolute maximum rating

conditions for extended periods may affect

device reliability.

4

AT49F040/040T

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