28F016XD datasheet(13/54 Pages) INTEL

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28F016XD FLASH MEMORY

4.0 BUS OPERATIONS, COMMANDS AND STATUS REGISTER DEFINITIONS

4.1 Bus Operations

Mode

Notes

RP#

RAS#

CAS#

OE#

WE#

DQ0–15

RY/BY#

Row Address Latch

1,2,9

VIH

↓

VIH

Column Address Latch

1,2,9

VIH

VIL

↓

Read

1,2,7

VIH

VIL

VIH

DOUT

Output Disable

1,6,7

VIH

VIL

VIH

High Z

Standby

1,6,7

VIH

High Z

Deep Power-Down

1,3

VIL

XXXX

High Z

VOH

Manufacturer ID

4,8

VIH

VIL

VIH

0089H

VOH

Device ID

4,8

VIH

VIL

VIH

66A8H

VOH

Write

1,5,6

VIH

VIL

XVIL

DIN

NOTES:

X can be VIH or VIL for address or control pins except for RY/BY#, which is either VOL or VOH, or High Z or DOUT for data

pins depending on whether or not OE# is active.

RY/BY# output is open drain. When the WSM is ready, erase is suspended or the device is in deep power-down mode,

RY/BY# will be at VOH if it is tied to VCC through a resistor. RY/BY# at VOH is independent of OE# while a WSM operation

is in progress.

RP# at GND ± 0.2V ensures the lowest deep power-down current.

A0 (latched by CAS#) at VIL provides the Manufacturer ID code. A0 (latched by CAS#) at VIH provides the Device ID code.

All other addresses (row and column) should be set to zero.

Commands for erase, data program, or lock-block operations can only be completed successfully when VPP = VPPH1 or

VPP = VPPH2.

While the WSM is running, RY/BY# stays at VOL until all operations are complete. RY/BY# goes to VOH when the WSM is

not busy or in erase suspend mode.

RY/BY# may be at VOL while the WSM is busy performing various operations (for example, a Status Register read during a

program operation).

The 28F016XD shares an identical device identifier with the 28F016XS.

Row (upper) addresses are latched via inputs A0-9 on the falling edge of RAS#. Column (lower) addresses are latched via

inputs A0-9 on the falling edge of CAS#. Row addresses must be latched before column addresses are latched.

28F016XD Datasheet(PDF) 13 Page - Intel Corporation

28F016XD Datasheet(HTML) 13 Page - Intel Corporation

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