AT49F001(N)(T)

9

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.

For chip erase, the data should be 10H, and for sector erase, the data should be 30H.

Program Cycle Characteristics

Symbol

Parameter

Min

Typ

Max

Units

t

BP

Byte Programming Time

10

50

µs

t

AS

Address Set-up Time

0

ns

t

AH

Address Hold Time

50

ns

t

DS

Data Set-up Time

50

ns

t

DH

Data Hold Time

0

ns

t

WP

Write Pulse Width

90

ns

t

WPH

Write Pulse Width High

90

ns

t

EC

Erase Cycle Time

10

seconds

OE

PROGRAM CYCLE

INPUT

DATA

ADDRESS

A0

55

5555

5555

AA

2AAA

CE

WE

A0-A16

DATA

OE

(1)

AA

80

Note 3

55

55

5555

5555

Note 2

AA

BYTE 0

BYTE 1

BYTE 2

BYTE 3

BYTE 4

BYTE 5

2AAA

2AAA

CE

WE

A0-A16

DATA

5555