AM49LV4608MT11IT datasheet(24/63 Pages) SPANSION

부품명	AM49LV4608MT11IT

상세설명	Stacked Multi-chip Package (MCP) 64 Mbit (4 M x 16 bit) Flash Memory and 8 Mbit (512K x 16-Bit) pseudo Static RAM

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Am49LV6408M

November 5, 2003

ADV ANCE

I N FO RMAT I O N

Figure 3.

SecSi Sector Protect Verify

Hardware Data Protection

The command sequence requirement of unlock cycles

for programming or erasing provides data protection

against inadvertent writes (refer to Tables 11 and 12

for command definitions). In addition, the following

hardware data protection measures prevent accidental

erasure or programming, which might otherwise be

caused by spurious system level signals during V

CC

power-up and power-down transitions, or from system

noise.

Low VCC Write Inhibit

When V

CC is less than VLKO, the device does not ac-

cept any write cycles. This protects data during V

CC

power-up and power-down. The command register

and all internal program/erase circuits are disabled,

and the device resets to the read mode. Subsequent

writes are ignored until V

CC is greater than VLKO. The

system must provide the proper signals to the control

pins to prevent unintentional writes when V

CC is

greater than V

LKO.

Write Pulse “Glitch” Protection

Noise pulses of less than 5 ns (typical) on OE#, CE#

or WE# do not initiate a write cycle.

Logical Inhibit

Write cycles are inhibited by holding any one of OE# =

V

IL, CE# = VIH or WE# = VIH. To initiate a write cycle,

CE# and WE# must be a logical zero while OE# is a

logical one.

Power-Up Write Inhibit

If WE# = CE# = V

IL and OE# = VIH during power up,

the device does not accept commands on the rising

edge of WE#. The internal state machine is automati-

cally reset to the read mode on power-up.

COMMON FLASH MEMORY INTERFACE (CFI)

The Common Flash Interface (CFI) specification out-

lines device and host system software interrogation

handshake, which allows specific vendor-specified

software algorithms to be used for entire families of

devices. Software support can then be device-inde-

pendent, JEDEC ID-independent, and forward- and

backward-compatible for the specified flash device

families. Flash vendors can standardize their existing

interfaces for long-term compatibility.

This device enters the CFI Query mode when the sys-

tem writes the CFI Query command, 98h, to address

55h, any time the device is ready to read array data.

The system can read CFI information at the addresses

given in Tables 7–10. To terminate reading CFI data,

the system must write the reset command.

The system can also write the CFI query command

when the device is in the autoselect mode. The device

enters the CFI query mode, and the system can read

CFI data at the addresses given in Tables 7–10. The

system must write the reset command to return the

device to reading array data.

For further information, please refer to the CFI Specifi-

cation and CFI Publication 100, available via the

World Wide Web at http://www.amd.com/flash/cfi. Al-

ternatively, contact an AMD representative for copies

of these documents.

Write 60h to

any address

Write 40h to SecSi

Sector address

with A6 = 0,

A1 = 1, A0 = 0

START

RESET# =

VIH or VID

Wait 1

µs

Read from SecSi

Sector address

with A6 = 0,

A1 = 1, A0 = 0

If data = 00h,

SecSi Sector is

unprotected.

If data = 01h,

SecSi Sector is

protected.

Remove VIH or VID

from RESET#

Write reset

command

SecSi Sector

Protect Verify

complete

유사한 부품 번호 - AM49LV4608MT11IT

제조업체	부품명	데이터시트	상세설명
SPANSION	AM49LV128BM	2Mb / 98P	128 Megabit (8 M x 16-Bit) MirrorBit??Uniform Sector Flash Memory and 32 Mbit (2 M x 16-Bit)
	AM49LV128BMAH11NS	2Mb / 98P	128 Megabit (8 M x 16-Bit) MirrorBit??Uniform Sector Flash Memory and 32 Mbit (2 M x 16-Bit)
	AM49LV128BMAH11NT	2Mb / 98P	128 Megabit (8 M x 16-Bit) MirrorBit??Uniform Sector Flash Memory and 32 Mbit (2 M x 16-Bit)
	AM49LV128BMAH15NS	2Mb / 98P	128 Megabit (8 M x 16-Bit) MirrorBit??Uniform Sector Flash Memory and 32 Mbit (2 M x 16-Bit)
	AM49LV128BMAH15NT	2Mb / 98P	128 Megabit (8 M x 16-Bit) MirrorBit??Uniform Sector Flash Memory and 32 Mbit (2 M x 16-Bit)

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유사한 설명 - AM49LV4608MT11IT

제조업체	부품명	데이터시트	상세설명
SPANSION	AM49LV6408M	1Mb / 63P	Stacked Multi-chip Package (MCP) 64 Mbit (4 M x 16 bit) Flash Memory and 8 Mbit (512K x 16-Bit)
SPANSION	AM41LV3204M	962Kb / 67P	Stacked Multi-chip Package (MCP) 32 Mbit (4 M x 8 bit/2 M x 16-bit) Flash Memory and 4 Mbit (512K x 8-Bit/256 K x 16-Bit) Static RAM
Advanced Micro Devices	AM41LV3204M	962Kb / 67P	Stacked Multi-chip Package (MCP) 32 Mbit (4 M x 8 bit/2 M x 16-bit) Flash Memory and 4 Mbit (512K x 8-Bit/256 K x 16-Bit) Static RAM
Integrated Silicon Solu...	75V16F64GS16	239Kb / 50P	64 Mbit FLASH MEMORY AND 16 Mbit PSEUDO SRAM STACKED MULTI-CHIP PACKAGE (MCP)
Elite Semiconductor Mem...	M24D816512DA	261Kb / 13P	8-Mbit (512K x 16) Pseudo Static RAM
Cypress Semiconductor	CYK512K16SCCA	177Kb / 10P	8-Mbit (512K x 16) Pseudo Static RAM
Elite Semiconductor Mem...	M24L816512SA	332Kb / 14P	8-Mbit (512K x 16) Pseudo Static RAM
Elite Semiconductor Mem...	M24L816512DA	315Kb / 12P	8-Mbit (512K x 16) Pseudo Static RAM
SPANSION	AM49PDL640AG	954Kb / 69P	64 Megabit (4 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 16 Mbit (1 M x 16-Bit) Pseudo Static RAM
SPANSION	AM49DL640AH	995Kb / 63P	64 Megabit (4 M x 16-Bit) CMOS 3.0 Volt-only, Simultaneous Operation Flash Memory and 16 Mbit (1 M x 16-Bit) Pseudo Static RAM

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