AM29LV033C-90EI Spansion Inc., AM29LV033C-90EI Datasheet - Page 11

• Manufacturer Part Number: AM29LV033C-90EI
• Manufacturer: Spansion Inc.

Specifications of AM29LV033C-90EI

• Cell Type: NOR
• Density: 32Mb
• Access Time (max): 90ns
• Interface Type: Parallel
• Boot Type: Not Required
• Address Bus: 22b
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Package Type: TSOP
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8b
• Number Of Words: 4M
• Supply Current: 16mA
• Mounting: Surface Mount
• Pin Count: 40
• Lead Free Status / Rohs Status: Not Compliant

DEVICE BUS OPERATIONS
This section describes the requirements and use of
the device bus operations, which are initiated through
the internal command register. The command register
itself does not occupy any addressable memory loca-
tion. The register is composed of latches that store the
commands, along with the address and data informa-
tion needed to execute the command. The contents of
Legend:
L = Logic Low = V
Notes:
1. When the ACC pin is at V
2. The sector protect and sector unprotect functions may also be implemented via programming equipment. See the
Requirements for Reading Array Data
To read array data from the outputs, the system must
drive the CE# and OE# pins to V
control and selects the device. OE# is the output con-
trol and gates array data to the output pins. WE#
should remain at V
The internal state machine is set for reading array data
upon device power-up, or after a hardware reset. This
ensures that no spurious alteration of the memory
content occurs during the power transition. No com-
mand is necessary in this mode to obtain array data.
Standard microprocessor read cycles that assert valid
addresses on the device address inputs produce valid
data on the device data outputs. The device remains
enabled for read access until the command register
contents are altered.
See
mation. Refer to the AC Read Operations table for tim-
22268B5 September 12, 2006
Read
Write (Note 1)
Standby
Output Disable
Reset
Sector/Sector Block Protect
(Note 2)
Sector/Sector Block Unprotect
(Note 2)
Temporary Sector/Sector Block
Unprotect
page 22
Block Protection and Unprotection” on page 15
“Reading Array Data” on page 21
for more information.
Operation
IL
, H = Logic High = V
IH
.
HH
, the device enters the accelerated program mode. See
Table 1. Am29LV033C Device Bus Operations
IL
. CE# is the power
IH
, V
V
0.3 V
CE#
ID
for more infor-
CC
X
L
L
L
L
L
X
= 12.0 ± 0.5 V, X = Don’t Care, A
±
D A T A
section.
OE#
Am29LV033C
H
H
X
X
H
H
X
L
WE#
S H E E T
H
H
X
X
X
L
L
L
the register serve as inputs to the internal state ma-
chine. The state machine outputs dictate the function
of the device.
the inputs and control levels they require, and the re-
sulting output. The following subsections describe
each of these operations in further detail.
ing specifications and to
timing diagram. I
represents the active current specification for reading
array data.
Writing Commands/Command Sequences
To write a command or command sequence (which in-
cludes programming data to the device and erasing
sectors of memory), the system must drive WE# and
CE# to V
The device features an Unlock Bypass mode to facili-
tate faster programming. Once the device enters the
Unlock Bypass mode, only two write cycles are re-
quired to program a byte, instead of four. The
Program Command Sequence” on page 21
has details on programming data to the device using
both standard and Unlock Bypass command se-
quences.
RESET#
V
0.3 V
V
V
V
CC
H
H
H
L
IL
ID
ID
ID
, and OE# to V
±
IN
= Address In, D
Table 1
A6 = H, A1 = H, A0 = L
A6 = L, A1 = H, A0 = L
CC1
“Accelerated Program Operations” on
Sector Addresses,
Sector Addresses
in the DC Characteristics table
Addresses
lists the device bus operations,
Figure 13, on page 34
IH
A
A
A
.
X
X
X
IN
IN
IN
IN
= Data In, D
OUT
“Sector/Sector
DQ0–DQ7
D
D
High-Z
High-Z
High-Z
IN
IN
= Data Out
D
D
, D
, D
D
OUT
section
IN
IN
for the
OUT
OUT
“Byte
9