at52br3244 ATMEL Corporation, at52br3244 Datasheet - Page 22

• Manufacturer Part Number: at52br3244
• Description: 32-megabit 2m X 16 Flash +4-megabit 256k X 16 / 8-megabit 512k X 16 Sram Stack Memory
• Manufacturer: ATMEL Corporation

Sector or Chip Erase Cycle Waveforms
Notes:
22
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
AT52BR3244(T)/3248(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
2471E–STKD–10/02