IMC010FLSA datasheet(22/39 Pages) INTEL

22 / 39 page

SERIES 2 FLASH MEMORY CARDS

290434 – 27

Bus

Command

x8 Mode

x16 Mode

Operation

Write

Suspend

Data e B0H

Data e B0B0H

Erase

Address e Desired

Block to Erase

Block Pair to Erase

Suspend

Read

Status Register

Data Toggle OE

CE1

or CE2

(CE1

and CE2 )

update Status

to update Status

Standby

Check SR Bit 7

Check SR Bit 7 and 15

1 e Ready

0 e Busy

Standby

Check SR Bit 6

Check SR Bit 6 and 14

1 e Suspended

0 e In Progress

Write

Rd Array

Data e FFH

Data e FFFFH

Cmd

Read

Read Data

until finished

Write

Erase

Data e D0H

Data e D0D0H

Resume

Address e Valid

Block Address

Block Pair Address

Figure 15 Erase SuspendResume Algorithm Allows Reads to Interrupt Erases

POWER CONSUMPTION

STANDBY MODE

In most applications software will only be accessing

one device pair at a time The Series 2 Card is de-

fined to be in the standby mode when one device

pair is in the Read Array Mode while the remaining

devices are in the Deep-Sleep Mode The Series 2

Card’s CE1

and CE2

input signals must also be

at VIH In standby mode much of the card’s circuitry

is shut off substantially reducing power consump-

tion Typical power consumption for a 20 Megabyte

Series 2 card in standby mode is 65 mA

SLEEP MODE

Writing a ‘‘1’’ to the PWRDWN bit of the GLOBAL

POWERDOWN REGISTER places all FlashFile

Memory devices into a Deep-Sleep mode This dis-

ables most of the 28F008SA’s circuitry and reduces

current consumption to 02 mA per device Addition-

ally when the host system pulls ASIC control logic

high and latches all address and data lines (ie not

toggling) the card’s total current draw is reduced to

approximately 5 mA (CMOS input levels) for a 20

Megabyte card On writing a ‘‘0’’ to the PWRDWN bit

(Global PowerDown Register) or any individual de-

vice pair (Sleep Control Register) a Deep-Sleep

mode

recovery

period

must

allowed

for

28F008SA device circuitry to power back on

IMC010FLSA Datasheet(PDF) 22 Page - Intel Corporation

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