AT49F2048

8

Program Cycle Waveforms

Sector or Chip Erase Cycle Waveforms

Notes:

1.

OE must be high only when WE and CE are both low.

2.

For chip erase, the address should be 5555. For sector erase, the address depends on what sector is to be erased. (See

note 4 under command definitions.)

3.

Program Cycle Characteristics

Symbol

Parameter

Min

Max

Units

Word Programming Time

50

µs

Address Set-up Time

10

ns

Address Hold Time

50

ns

Data Set-up Time

50

ns

Data Hold Time

10

ns

Write Pulse Width

100

ns

Write Pulse Width High

100

ns

Erase Cycle Time

10

seconds

CE

WE

DATA

A0-A16

OE

5555

2AAA

5555

AA

55

A0

ADDRESS

PROGRAM CYCLE

INPUT

DATA

5555

AA

CE

WE

DATA

A0-A16

OE

5555

2AAA

5555

AA

55

80

5555

2AAA

Note 2

AA

55

Note 3

WORD 0

WORD 1

WORD 2

WORD 3

WORD 4

WORD 5

(1)