21

AT49BV162/163A(T)

3349G–FLASH–7/04

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 555. For sector erase, the address depends on what sector is to be erased.

(See note 3 under “Command Definitions in Hex” on page 12.)

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/Word Programming Time

12

200

µs

t

BPD

Byte/Word Programming Time in Dual Programming Mode

6

100

µs

t

AS

Address Setup Time

0ns

t

AH

Address Hold Time

35

ns

t

DS

Data Setup Time

35

ns

t

DH

Data Hold Time

0ns

t

WP

Write Pulse Width

35

ns

t

WPH

Write Pulse Width High

35

ns

t

WC

Write Cycle Time

70

ns

t

RP

Reset Pulse Width

500

ns

t

EC

Chip Erase Cycle Time

25

seconds

t

SEC1

Sector Erase Cycle Time (4K Word Sectors)

0.3

3.0

seconds

t

SEC2

Sector Erase Cycle Time (32K Word Sectors)

1.0

5.0

seconds

t

ES

Erase Suspend Time

15

µs

t

PS

Program Suspend Time

10

µs

OE

PROGRAM CYCLE

INPUT

DATA

ADDRESS

A0

55

555

555

AA

AAA

CE

WE

A0 - A19

DATA

555

AA

OE

(1)

AA

80

Note 3

55

55

555

555

Note 2

AA

WORD 0

WORD 1

WORD 2

WORD 3

WORD 4

WORD 5

AAA

AAA

CE

WE

A0-A19

DATA

555