AM29F016D-70EI Spansion Inc., AM29F016D-70EI Datasheet - Page 13

• Manufacturer Part Number: AM29F016D-70EI
• Description: IC,EEPROM,NOR FLASH,2MX8,CMOS,TSSOP,48PIN,PLASTIC
• Manufacturer: Spansion Inc.

Specifications of AM29F016D-70EI

• Rohs Compliant: NO

Autoselect Mode
The autoselect mode provides manufacturer and de-
vice identification, and sector protection verification,
through identifier codes output on DQ7–DQ0. This
mode is primarily intended for programming equipment
to automatically match a device to be programmed with
its corresponding programming algorithm. However,
the autoselect codes can also be accessed in-system
through the command register.
When using programming equipment, the autoselect
mode requires V
A9. Address pins A6, A1, and A0 must be as shown in
Autoselect Codes (High Voltage Method) table. In addi-
tion, when verifying sector protection, the sector
L = Logic Low = V
Sector Group Protection/Unprotection
The hardware sector group protection feature dis-
ables both program and erase operations in any
sector group. Each sector group consists of four adja-
cent sectors. Table
grouped, and the address range that each sector
group contains. The hardware sector group unprotec-
tion feature re-enables both program and erase
operations in previously protected sector groups.
Sector group protection/unprotection must be imple-
mented using programming equipment. The procedure
requires a high voltage (V
control pins. Details on this method are provided in a
supplement, publication number 23922. Contact an
AMD representative to obtain a copy of the appropriate
document. Note that the sector group protection and
unprotection scheme differs from that used with the
p r ev i o u s ve r s i o n s o f t h i s d ev i c e, n a m e l y t h e
Am29F016B and Am29F016.
The device is shipped with all sector groups unpro-
tected. AMD offers the option of programming and
protecting sector groups at its factory prior to shipping
the device through AMD’s ExpressFlash™ Service.
Contact an AMD representative for details.
November 1, 2006 21444E6
Manufacturer ID:
AMD
Device ID:
Am29F016D
Sector Group
Protection
Verification
Description
IL
ID
, H = Logic High = V
CE# OE# WE# A20-A18 A17-A10
(11.5 V to 12.5 V) on address pin
L
L
L
4
Table 3. Am29F016D Autoselect Codes (High Voltage Method)
shows how the sectors are
ID
L
L
L
) on address pin A9 and the
H
H
H
IH
, SA = Sector Address, X = Don’t care.
Address
Sector
Group
X
X
D A T A
Am29F016D
X
X
X
S H E E T
V
V
V
A9
ID
ID
ID
address must appear on the appropriate highest order
address bits. Refer to the corresponding Sector Ad-
dress Tables. The Command Definitions table shows
the remaining address bits that are don’t care. When all
necessary bits have been set as required, the program-
ming equipment may then read the corresponding
identifier code on DQ7–DQ0.
To access the autoselect codes in-system, the host
system can issue the autoselect command via the
command register, as shown in the Command Defini-
tions table. This method does not require V
“Command Definitions”
lect mode.
It is possible to determine whether a sector group is
protected or unprotected. See
details.
Temporary Sector Group Unprotect
This feature allows temporary unprotection of previ-
ously protected sector groups to change data
in-system. The Sector Group Unprotect mode is acti-
vated by setting the RESET# pin to V
mode, formerly protected sector groups can be pro-
grammed or erased by selecting the sector group
Sector
Group
SGA0
SGA1
SGA2
SGA3
SGA4
SGA5
SGA6
SGA7
A8-A7
X
X
X
Table 4. Sector Group Addresses
A6
V
V
V
IL
IL
IL
A20
0
0
0
0
1
1
1
1
A5-A2
X
X
X
A19
for details on using the autose-
0
0
1
1
0
0
1
1
V
V
V
A1
IH
IL
IL
V
A0
V
V
IH
IL
IL
A18
“Autoselect Mode”
0
1
0
1
0
1
0
1
00h (unprotected)
01h (protected)
DQ7-DQ0
ID
SA12
SA16
SA20
SA24
SA28
SA8
. During this
SA0
SA4
ADh
01h
Sectors
–
–
–
–
–
–
–
–
SA11
ID
SA3
SA7
SA15
SA19
SA23
SA27
SA31
. See
11
for