MBM29DL800TA-70 Meet Spansion Inc., MBM29DL800TA-70 Datasheet - Page 18

• Manufacturer Part Number: MBM29DL800TA-70
• Description: Flash Memory Cmos 8m 1m ? 8 / 512k ? 16 Bit
• Manufacturer: Meet Spansion Inc.

18
MB M29DL800TA
Automatic Sleep Mode
Output Disable
Autoselect
Write
There is a function called automatic sleep mode to restrain power consumption during read-out of
MBM29DL800TA/BA data. This mode can be used effectively with an application requested low power
consumption such as handy terminals.
To activate this mode, MBM29DL800TA/BA automatically switch themselves to low power mode when
MBM29DL800TA/BA addresses remain stably during access fine 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 MBM29DL800TA/BA read-out the data for changed addresses.
With the OE input at a logic high level (V
to be in a high impedance state.
The autoselect mode allows the reading out of a binary code from the devices and will identify its manufacturer
and type. This mode is intended for use by programming equipment for the purpose of automatically matching
the devices to be programmed with its corresponding programming algorithm. This mode is functional over the
entire temperature range of the devices.
To activate this mode, the programming equipment must force V
identifier bytes may then be sequenced from the devices 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
MBM29DL800TA/BA are erased or programmed in a system without access to high voltage on the A
command sequence is illustrated in “MBM29DL800TA/BA Command Definitions Table” (in ■DEVICE BUS
OPERATION). (Refer to Autoselect Command section.)
Word 0 (A
identifier code (MBM29DL800TA = 4Ah and MBM29DL800BA = CBh for ×8 mode; MBM29DL800TA = 224Ah
and MBM29DL800BA = 22CBh for ×16 mode). These two bytes/words are given in “MBM29DL800TA/BA Sector
Protection Verify Autoselect Codes Table” and “Extended Autoselect Code Table” (in ■DEVICE BUS
OPERATION). All identifiers for manufactures and device will exhibit odd parity with DQ
bit. In order to read the proper device codes when executing the autoselect, A
“MBM29DL800TA/BA Sector Protection Verify Autoselect Codes Table” and “Extended Autoselect Code Table”
in ■DEVICE BUS OPERATION.)
In case of applying V
can not be executed.
Device erasure and programming are accomplished via the command register. The contents of the register serve
as inputs to the internal state machine. The state machine outputs dictate the function of the device.
The command register itself does not occupy any addressable memory location. The register is a latch used to
store the commands, along with the address and data information needed to execute the command. The
command register is written by bringing WE to V
the falling edge of WE or CE, whichever happens later; while data is latched on the rising edge of WE or CE,
whichever happens first. Standard microprocessor write timings are used.
Refer to AC Write Characteristics and the Erase/Programming Waveforms for specific timing parameters.
0
= V
IL
) represents the manufacturer’s code (Fujitsu = 04h) and word 1 (A
IH
and BYTE = V
ID
on A
9
, since both Bank 1 and Bank 2 enters Autoselect mode, the simultenous operation
-70/90
CC
IL
)” in ■DEVICE BUS OPERATION.)
active current (I
Retired Product DS05-20860-7E_August 6, 2007
IH
/MBM29DL800BA
0
, A
), output from the devices are disabled. This will cause the output pins
1
, and A
IL
, while CE is at V
6
CC2
(A
) is required.
-1
). (See “MBM29DL800TA/BA User Bus Operations
ID
IL
(11.5 V to 12.5 V) on address pin A
and OE is at V
-70/90
1
must be V
0
IH
= V
. Addresses are latched on
IH
) represents the device
0
7
from V
defined as the parity
IL
. (See
IL
to V
9
IH
pin. The
9
. Two
. All