AM29F160DB-90EF Spansion Inc., AM29F160DB-90EF Datasheet - Page 14

• Manufacturer Part Number: AM29F160DB-90EF
• Description: IC, FLASH, 16MBIT, 90NS, TSOP-48
• Manufacturer: Spansion Inc.

Specifications of AM29F160DB-90EF

• Memory Type: Flash
• Memory Size: 16Mbit
• Memory Configuration: 2M X 8 / 1M X 16
• Ic Interface Type: Parallel
• Access Time: 90ns
• Supply Voltage Range: 4.5V To 5.5V
• Memory Case Style: TSOP
• No. Of Pins: 48
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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 ad-
L = Logic Low = V
Sector Protection/Unprotection
The hardware sector protection feature disables both
program and erase operations in any sector. The hard-
ware sector unprotection feature re-enables both pro-
gram and erase operations in previously protected
sectors.
The device is shipped with all sectors unprotected.
AMD offers the option of programming and protecting
sectors at its factory prior to shipping the device
through AMD’s ExpressFlash™ Service. Contact an
AMD representative for details.
It is possible to determine whether a sector is protected
or unprotected. See
details.
Sector protection/unprotection can be implemented via
two methods.
12
Manufacturer ID: AMD
Device ID:
Am29F160D
(Top Boot Block)
Device ID:
Am29F160D
(Bottom Boot Block)
Sector Protection Verification
Description
IL
ID
, H = Logic High = V
(11.5 V to 12.5 V) on address pin
Mode
Word
Word
Autoselect Mode‚ on page 12
Byte
Byte
Table 4. Am29F160D Autoselect Codes (High Voltage Method)
CE#
L
L
L
L
L
L
OE#
IH
L
L
L
L
L
L
, SA = Sector Address, X = Don’t care.
WE#
H
H
H
H
H
H
A19
A12
SA
D A T A S H E E T
to
X
X
X
Am29F160D
for
A11
A10
to
X
X
X
X
V
V
V
V
dress 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 are set as required, the programming
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
the autoselect mode.
A9
The primary method requires V
only, and can be implemented either in-system or via
programming equipment.
the algorithms and
timing diagram. This method uses standard micropro-
cessor bus cycle timing. For sector unprotect, all unpro-
tected sectors must first be protected prior to the first
sector unprotect write cycle.
The alternate method intended only for programming
equipment requires V
This method is compatible with programmer routines
written for earlier 5.0 volt-only AMD flash devices. De-
tails on this method are provided in a supplement, pub-
lication number 22289. Contact an AMD representative
to request a copy.
Command Definitions‚ on page 18
ID
ID
ID
ID
A8
A7
to
X
X
X
X
A6
L
L
L
L
A5
A2
to
X
X
X
X
Figure 20, on page 39
ID
A1
Am29F160D_00_D10 April 23, 2010
H
L
L
L
on address pin A9 and OE#.
Figure 2, on page 14
A0
H
H
L
L
ID
DQ15
on the RESET# pin
DQ8
22h
22h
for details on using
to
X
X
X
X
X
01h (protected)
(unprotected)
shows the
DQ7
DQ0
D2h
D2h
D8h
D8h
01h
00h
to
ID
shows
. See