MX26LV004TTC-55G datasheet(5/43 Pages) MCNIX

Part #	MX26LV004TTC-55G

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

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P/N:PM1099

MX26LV004T/B

REV. 1.0, NOV. 08, 2004

AUTOMATIC PROGRAMMING

The MX26LV004T/B is byte programmable using the Au-

tomatic Programming algorithm. The Automatic Pro-

gramming algorithm makes the external system do not

need to have time out sequence nor to verify the data

programmed.

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 MX26LV004T/B 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 verifi-

cation of electrical erase are controlled internally within

the device. 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 MX26LV004T/B elec-

trically 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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MX26LV004TTC-55G Datasheet(PDF) 5 Page - Macronix International

MX26LV004TTC-55G Datasheet(HTML) 5 Page - Macronix International

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