MBM29LV320TE80TN Meet Spansion Inc., MBM29LV320TE80TN Datasheet - Page 26

• Manufacturer Part Number: MBM29LV320TE80TN
• Description: Flash Memory Cmos 32 M 4 M ? 8/2 M ? 16 Bit
• Manufacturer: Meet Spansion Inc.

26
MBM29LV320TE/BE
■ FUNCTIONAL DESCRIPTION
1.
2.
3.
4.
5.
The device has two control functions which must be satisfied in order to obtain data at the outputs. CE is the
power control and should be used for a device selection. OE is the output control and used to gate data to the
output pins if a device is selected.
Address access time (t
access time (t
enable access time is the delay from the falling edge of OE to valid data at the output pins. Assuming the
addresses have been stable for at least t
power-up, input hardware reset or to change CE pin from “H” or “L”.
There are two ways to implement the standby mode on the device, one using both the CE and RESET pins; the
other via the RESET pin only.
When using both pins, CMOS standby mode is achieved with CE and RESET inputs both held at V
Under this condition the current consumed is less than 5 μA Max During Embedded Algorithm operation, V
active current (I
from either of these standby modes.
When using the RESET pin only, CMOS standby mode is achieved with RESET input held at V
taken high, the device requires t
In the standby mode the outputs are in the high impedance state independently of the OE input.
There is a function called automatic sleep mode to restrain power consumption during read-out of the device
data. This mode can be useful in the application such as a handy terminal which requires low power consumption.
To activate this mode, the device automatically switches themselves to low power mode when the device ad-
dresses remain stable during access time of 150 ns. It is not necessary to control CE, WE, and OE on the mode.
Under the mode, the current consumed is typically 1 μA (CMOS Level).
During simultaneous operation, V
Since the data are latched during this mode, the data are read-out continuously. If the addresses are changed,
the mode is canceled automatically, and the device read the data for changed addresses.
With the OE input at logic high level (V
be in a high impedance state.
Autoselect mode allows reading out of a binary code from the device and will identify its manufacturer and type.
This mode is intended for use by programming equipment for the purpose of automatically matching the device
to be programmed with its corresponding programming algorithm. This mode is functional over the entire tem-
perature range of the device.
To activate this mode, the programming equipment must force V
identifier bytes may then be sequenced from the device outputs by toggling address A
addresses are DON’T CARES except A
Tables (BYTE = V
The manufacturer and device codes may also be read via the command register, for instances when the device
is erased or programmed in a system without access to high voltage on the A
illustrated in “MBM29LV320TE/BE Command Definitions Table” (■DEVICE BUS OPERATIONS) (See “2. Au-
toselect Command” in ■COMAND DIFINITIONS).
(CE = “H” or “L”). Under this condition the current consumed is less than 5 μA Max Once the RESET pin is
Read Mode
Standby Mode
Automatic Sleep Mode
Output Disable
Autoselect
CE
CC2
) is the delay from stable addresses and stable CE to valid data at the output pins. The output
IH
) is required even when CE = “H”. The device can be read with standard access time (t
and BYTE = V
ACC
) is equal to the delay from stable addresses to valid output data. The chip enable
RH
CC
as wake up time for outputs to be valid for read access.
IL
)” in ■DEVICE BUS OPERATIONS.)
active current (I
Retired Product DS05-20894-5E_July 31, 2007
IH
), output from the device is disabled. This will causes the output pins to
80/90/10
ACC
6
, A
-t
1
OE
, and A
time. When reading out data without changing addresses after
CC2
0
) is required.
(A
-1
). (See “MBM29LV320TE/BE User Bus Operations
ID
(11.5 V to 12.5 V) on address pin A
9
pin. The command sequence is
0
from V
SS
± 0.3 V
IL
CC
to V
± 0.3 V.
9
IH
. Two
. All
CE
CC
)