MX29F004TPC-90 datasheet(5/39 Pages) MCNIX

Part #	MX29F004TPC-90

Description	4M-BIT [512KX8] CMOS FLASH MEMORY

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Manufacturer	MCNIX [Macronix International]

Direct Link	http://www.macronix.com

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MX29F004T/B

P/N:PM0554

REV. 1.9, OCT. 19, 2004

AUTOMATIC PROGRAMMING

The MX29F004T/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. The typical chip programming time at room

temperature of the MX29F004T/B is less than 4 sec-

onds.

AUTOMATIC CHIP ERASE

The entire chip is bulk erased using 10 ms erase pulses

according to MXIC's Automatic Chip Erase algorithm.

Typical erasure at room temperature is accomplished in

less than 4 second. The Automatic Erase algorithm

automatically programs the entire array prior to electri-

cal erase. The timing and verification of electrical erase

are controlled internally within the device.

AUTOMATIC SECTOR ERASE

The MX29F004T/B is sector(s) erasable using MXIC's

Auto Sector Erase algorithm. Sector erase modes allow

sectors of the array to be erased in one erase cycle.

The Automatic Sector Erase algorithm automatically

programs the specified sector(s) prior to electrical erase.

The timing and verification of electrical erase are con-

trolled internally within the device.

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 tog-

gling between consecutive read cycles, provide feed-

back to the user as to the status of the programming

operation.

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 verification the entire array.

Then the device automatically times the erase pulse

width, provides the erase verify, and counts the number

of sequences. A status bit toggling between consecu-

tive read cycles provides feedback to the user as to the

status of the programming 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 of WE or CE,

whichever happens later, 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 MX29F004T/B elec-

trically erases all bits simultaneously using Fowler- tun-

neling. The bytes are programmed by using the EPROM

programming mechanism of hot electron 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.

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MX29F004TPC-90 Datasheet(PDF) 5 Page - Macronix International

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