DA28F320S5-110 View Datasheet(PDF) - Intel

Part Name

Description

Manufacturer

DA28F320S5-110

WORD-WIDE FlashFile™ MEMORY FAMILY

Intel 

E

28F160S5, 28F320S5

Start

Set Time-Out

Issue Write Command

No

E8H, Block Address

Read Extended

Status Register

XSR.7 =

0

1

Write Word or Byte

Count, Block Address

Write Buffer Data,

Start Address

X=0

Write Buffer

Time-Out?

Yes

X=N

No

Yes

Abort Buffer

Write

Yes

Command?

Yes

No

Write Next Buffer Data,

Device Address

Write to Another

Block Address

Buffer Write to

Flash Aborted

X=X+1

Bus Command

Comments

Operation

Write

Write to Data = E8h

Buffer Addr = Block Address

Read

XSR.7=valid

Addr = X

Standby

Check XSR.7

1 = Write buffer available

0 = Write buffer not available

Write

Data = N = word/byte count

(Note 1, 2)

N = 0 corresponds to count = 1

Addr = Block Address

Write

Data = write buffer data

(Note 3, 4)

Addr = device start address

Write

Data = write buffer data

(Note 5, 6)

Addr = device address

Write

Buffer Data = D0h

write to flash Addr = X

confirm

Read

Status Register data

CE# & OE# low updates SR

Addr = X

Standby

Check SR.7

1 = WSM ready

0 = WSM busy

1. Byte- or word-count values on DQ0-7 are loaded into

the Count register.

2. The device now outputs the Status Register when

read (XSR is no longer available).

3. Write Buffer contents will be programmed at the

device start address or destination flash address.

4. Align the start address on a Write Buffer boundary for

maximum programming performance.

5. The device aborts the Write to Buffer command if the

current address is outside of the original block

address.

6. The Status Register indicates an “improper command

sequence” if the Write to Buffer command is aborted.

Follow this with a Clear Status Register command.

Full status check can be done after all Erase and

Write sequences complete. Write FFh after the last

operation to reset the device to Read Array mode.

Buffer Write to Flash

Confirm D0H

Another

Buffer

Write?

Issue Read

Status Command

No

Read

Status Register

No

SR.7 =

0 Suspend

Write?

Yes

Suspend

Write Loop

1

Full Status

Check if Desired

Buffer Write to

Flash Complete

Figure 6. Write to Buffer Flowchart

0608_07

ADVANCE INFORMATION

31

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