at49lw080 ATMEL Corporation, at49lw080 Datasheet - Page 17

• Manufacturer Part Number: at49lw080
• Description: 8-megabit Firmware Hub Flash Memory
• Manufacturer: ATMEL Corporation

7. Command Definitions Table
Notes:
7.1
7.2
1966G–FLASH–3/05
Command Sequence
Read Array/Reset
Sector Erase
Byte Program
Sector Erase Suspend
Program Suspend
Sector Erase Resume
Program Resume
Product ID Entry
Read Status Register
Clear Status Register
1. X = Any valid address within the device
2. The sector must not be write locked when attempting sector erase or program operations. Attempts to issue a sector erase
3. SA = Sector address. Any byte address within a sector can be used to designate the sector address (see
4. Either 40H or 10H is recognized as the program setup.
5. Following the Product ID Entry command, read operations access manufacture and device ID. See
6. AID = Address used to read data for manufacture or device ID
7. SRD = Data Read from status register
Read Array
Product Identification
or byte program to a write locked sector will fail.
(2)(3)
(2)(4)
(5)
(2)
(2)
(2)
(2)
Upon initial device power-up and after exit from reset, the device defaults to read array mode.
This operation is also initiated by writing the Read Array command. The device remains enabled
for reads until another command is written. Once the internal state machine (WSM) has started a
block erase or program operation, the device will not recognize the Read Array Command until
the operation is completed, unless the operation is suspended via an Erase Suspend or Pro-
gram Suspend Command. The Read Array command functions independently of the V
voltage.
The product identification mode identifies the device and manufacturer as Atmel.
Following the Product ID Entry command, read cycles from the addresses shown in
retrieve the manufacturer and device code. To exit the product identification mode, any valid
command can be written to the device. The Product ID Entry command functions independently
of the V
Table 7-1.
Code
Manufacturer Code
Device Code
Bus Cycles
PP
1
2
2
1
1
2
2
1
voltage.
Identifier Codes
Operation
Write
Write
Write
Write
Write
Write
Write
Write
Write
Write
Address (AID)
000000
000001
XXXX
XXXX
XXXX
XXXX
XXXX
XXXX
Addr
Addr
SA
1st Bus Cycle
40 or 10
Data
FF
B0
D0
20
90
70
50
Operation
Write
Write
Read
Read
Data
1F
E1
AT49LW080
Table
XXXX
AID
Addr
Addr
SA
2nd Bus Cycle
(6)
7-1.
page
13).
Table 7-1
SRD
Data
D
D
D0
OUT
IN
(7)
17
PP