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MX26LV040PC-70G Datasheet(PDF) 4 Page - Macronix International

Part # MX26LV040PC-70G
Description  4M-BIT [512K x 8] CMOS SINGLE VOLTAGE 3V ONLY HIGH SPEED eLiteFlashTM MEMORY
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Manufacturer  MCNIX [Macronix International]
Direct Link  http://www.macronix.com
Logo MCNIX - Macronix International

MX26LV040PC-70G Datasheet(HTML) 4 Page - Macronix International

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P/N:PM1118
MX26LV040
REV. 1.0, NOV. 08, 2004
AUTOMATIC PROGRAMMING
The MX26LV040 is byte programmable using the Auto-
matic Programming algorithm. The Automatic Program-
ming algorithm makes the external system do not need
to have time out sequence nor to verify the data pro-
grammed.
AUTOMATIC PROGRAMMING ALGORITHM
MXIC's Automatic Programming algorithm requires the
user to only write program set-up commands (including
2 unlock write cycle and A0H) and a program command
(program data and address). The device automatically
times the programming pulse width, provides the pro-
gram verification, and counts the number of sequences.
A status bit similar to DATA# Polling and a status bit
toggling between consecutive read cycles, provide feed-
back to the user as to the status of the programming
operation. Refer to write operation status, table 7, for more
information on these status bits.
AUTOMATIC CHIP ERASE
The entire chip is bulk erased using 10 ms erase pulses
according to MXIC's Automatic Chip Erase algorithm.
The Automatic Erase algorithm automatically programs
the entire array prior to electrical erase. The timing and
verification of electrical erase are controlled internally
within the device.
AUTOMATIC SECTOR ERASE
The MX26LV040 is sector(s) erasable using MXIC's Auto
Sector Erase algorithm. The Automatic Sector Erase
algorithm automatically programs the specified sector(s)
prior to electrical erase. The timing and verification of
electrical erase are controlled internally within the de-
vice. An erase operation can erase one sector, multiple
sectors, or the entire device.
AUTOMATIC ERASE ALGORITHM
MXIC's Automatic Erase algorithm requires the user to
write commands to the command register using stan-
dard microprocessor write timings. The device will auto-
matically pre-program and verify the entire array. Then
the device automatically times the erase pulse width,
provides the erase verification, and counts the number of
sequences. A status bit toggling between consecutive
read cycles provides feedback to the user as to the sta-
tus of the erasing operation.
Register contents serve as inputs to an internal state-
machine which controls the erase and programming cir-
cuitry. During write cycles, the command register inter-
nally latches address and data needed for the program-
ming and erase operations. During a system write cycle,
addresses are latched on the falling edge, and data are
latched on the rising edge of WE# or CE#, whichever
happens first.
MXIC's Flash technology combines years of EPROM
experience to produce the highest levels of quality, reli-
ability, and cost effectiveness. The MX26LV040 electri-
cally erases all bits simultaneously using Fowler-
Nordheim tunneling. The bytes are programmed by us-
ing the EPROM programming mechanism of hot elec-
tron injection.
During a program cycle, the state-machine will control
the program sequences and command register will not
respond to any command set. During a Sector Erase
cycle, the command register will only respond to Erase
Suspend command. After Erase Suspend is completed,
the device stays in read mode. After the state machine
has completed its task, it will allow the command regis-
ter to respond to its full command set.
AUTOMATIC SELECT
The auto select mode provides manufacturer and de-
vice identification, through identifier codes output on
Q7~Q0. This mode is mainly adapted for programming
equipment on the device to be programmed with its pro-
gramming algorithm.When programming by high voltage
method, automatic select mode requires VID (11V to 12V)
on address pin A9 and other address pin A6, A1 and A0
as referring to Table 3. In addition, to access the auto-
matic select codes in-system, the host can issue the
automatic select command through the command regis-
ter without requiring VID, as shown in table 4.


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