at49bv3218 ATMEL Corporation, at49bv3218 Datasheet - Page 18

• Manufacturer Part Number: at49bv3218
• Description: 32-megabit 2mx16/4mx8 3-volt Only Flash Memory
• Manufacturer: ATMEL Corporation

Sector or Chip Erase Cycle Waveforms
Notes:
18
A0 - A20
DA T A
WE
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.
3. For chip erase, the data should be 10H, and for sector erase, the data should be 30H.
OE
CE
AT49BV/LV3218(T)
(See note 3 under Command Definitions.)
(1)
t
AS
555
t
WC
WORD 0
t
AH
AA
t
t
DS
WP
AAA
WORD 1
t
DH
55
555
t
WPH
WORD 2
80
555
WORD 3
AA
AAA
WORD 4
55
Note 2
WORD 5
Note 3
t
SR/W
t
t
EC
ADDRESS
t
VALID
ACC
OUTPUT
VALID
2452F–FLASH–10/02