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HY29LV400

4 Mbit (512K x 8/256K x 16) Low Voltage Flash Memory

KEY FEATURES

n

Single Power Supply Operation

鈥?Read, program and erase operations from

2.7 to 3.6 volts

鈥?Ideal for battery-powered applications

High Performance

鈥?70 and 90 ns access time versions for full

voltage range operation

鈥?55 ns access time version for operation

from 3.0 to 3.6 volts

Ultra-low Power Consumption (Typical

Values)

鈥?Automatic sleep mode current: 0.2 碌A(chǔ)

鈥?Standby mode current: 0.2 碌A(chǔ)

鈥?Read current: 7 mA (at 5 Mhz)

鈥?Program/erase current: 15 mA

Flexible Sector Architecture:

鈥?One 16 KB, two 8 KB, one 32 KB and

seven 64 KB sectors in byte mode

鈥?One 8 KW, two 4 KW, one 16 KW and

seven 32 KW sectors in word mode

鈥?Top or bottom boot block configurations

available

Sector Protection

鈥?Allows locking of a sector or sectors to

prevent program or erase operations

within that sector

鈥?Sectors lockable in-system or via

programming equipment

鈥?Temporary Sector Unprotect allows

changes in locked sectors (requires high

voltage on RESET# pin)

Fast Program and Erase Times

鈥?Sector erase time: 0.5 sec typical for each

sector

鈥?Chip erase time: 5 sec typical

鈥?Byte program time: 9

碌s

typical

鈥?Word program time: 11

碌s

typical

Unlock Bypass Program Command

鈥?Reduces programming time when issuing

multiple program command sequences

Automatic Erase Algorithm Preprograms

and Erases Any Combination of Sectors

or the Entire Chip

Automatic Program Algorithm Writes and

Verifies Data at Specified Addresses

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Minimum 100,000 Write Cycles per Sector

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Compatible With JEDEC standards

鈥?Pinout and software compatible with

single-power supply Flash devices

鈥?Superior inadvertent write protection

Data# Polling and Toggle Bits

鈥?Provide software confirmation of

completion of program and erase

operations

Ready/Busy# Pin

鈥?Provides hardware confirmation of

completion of program and erase

operations

Erase Suspend/Erase Resume

鈥?Suspends an erase operation to allow

reading data from, or programming data

to, a sector that is not being erased

鈥?Erase Resume can then be invoked to

complete suspended erasure

Hardware Reset Pin (RESET#) Resets the

Device to Reading Array Data

Space Efficient Packaging

鈥?48-pin TSOP and 48-ball FBGA packages

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LOGIC DIAGRAM

18

A[17:0]

DQ[7:0]

7

CE#

OE#

WE#

RESET#

BYTE#

DQ[14:8]

DQ[15]/A[-1]

RY/BY#

8

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Preliminary

Revision 1.0, November 2001

next

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