28F008SA datasheet(4/33 Pages) INTEL

4 / 33 page

28F008SA

Table 1 Pin Description

Symbol

Type

Name and Function

A0–A19

INPUT

ADDRESS INPUTS

for memory addresses Addresses are internally

latched during a write cycle

DQ0–DQ7

INPUTOUTPUT

DATA INPUTOUTPUTS

Inputs data and commands during Command

User Interface write cycles outputs data during memory array Status

float to tri-state off when the chip is deselected or the outputs are

disabled Data is internally latched during a write cycle

INPUT

CHIP ENABLE

Activates the device’s control logic input buffers

decoders and sense amplifiers CE

is active low CE

high deselects

the memory device and reduces power consumption to standby levels

INPUT

RESETDEEP POWERDOWN

Puts the device in deep powerdown

mode RP

is active low RP

high gates normal operation RP

also

locks out block erase or byte write operations when active low providing

data protection during power transitions RP

active resets internal

automation Exit from Deep Powerdown sets device to read-array mode

INPUT

OUTPUT ENABLE

Gates the device’s outputs through the data buffers

during a read cycle OE

is active low

INPUT

WRITE ENABLE

Controls writes to the Command User Interface and

array blocks WE

is active low Addresses and data are latched on the

rising edge of the WE

pulse

RYBY

OUTPUT

READYBUSY

Indicates the status of the internal Write State

Machine When low it indicates that the WSM is performing a block

erase or byte write operation RYBY

high indicates that the WSM is

ready for new commands block erase is suspended or the device is in

deep powerdown mode RYBY

is always active and does NOT float

to tri-state off when the chip is deselected or data outputs are disabled

VPP

BLOCK ERASEBYTE WRITE POWER SUPPLY

for erasing blocks of

the array or writing bytes of each block

NOTE

With VPP k VPPLMAX memory contents cannot be altered

VCC

DEVICE POWER SUPPLY (5V g10% 5V g5%)

GND

GROUND

28F008SA датащи(PDF) 4 Page - Intel Corporation

28F008SA датащи(HTML) 4 Page - Intel Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

датащи скачать

ссылки URL