M28W320CT90N6 Datasheet M28W320CT90N6 | P1-P3

1/53May 2002

M28W320CT

M28W320CB

32 Mbit (2Mb x16, Boot Block)

3V Supply Flash Memory

FEATURES SUMMARY

■ SUPPLY VOLTAGE

–V

= 2.7V to 3.6V Core Power Supply

–V

DDQ

= 1.65V to 3.6V for Input/Output

–V

= 12V for fast Program (optional)

■ ACCESS TIME: 70, 85, 90,100ns

■ PROGRAMMING TIME:

– 10µs typical

– Double Word Programming Option

■ COMMON FLASH INTERFACE

– 64 bit Security Code

■ MEMORY BLOCKS

– Parameter Blocks (Top or Bottom location)

– Main Blocks

■ BLOCK LOCKING

– All blocks locked at Power Up

– Any combination of blocks can be locked

–WP

for Block Lock-Down

■ SECURITY

– 64 bit user Programmable OTP cells

– 64 bit unique device identifier

– One Parameter Block Permanently Lockable

■ AUTOMATIC STAND-BY MODE

■ PROGRAM and ERASE SUSPEND

■ 100,000 PROGRAM/ERASE CYCLES per

BLOCK

■ ELECTRONIC SIGNATURE

– Manufacturer Code: 20h

– Top Device Code, M28W320CT: 88BAh

– Bottom Device Code, M28W320CB: 88BBh

Figure 1. Packages

TSOP48 (N)

12 x 20mm

FBGA

µBGA

µBGA47 (GB)

6.39 x 10.5mm

TFBGA47 (ZB)

6.39 x 10.5mm

M28W320CT, M28W320CB

2/53

TABLE OF CONTENTS

SUMMARYDESCRIPTION...........................................................5

Figure2.LogicDiagram ..........................................................5

Table 1. Signal Names . . . ........................................................5

Figure 3. TSOP Connections.......................................................6

Figure 5. TFBGA Connections (Top view through package). ..............................8

Figure6.BlockAddresses.........................................................9

Figure7.SecurityBlockandProtectionRegisterMemoryMap ............................9

SIGNALDESCRIPTIONS...........................................................10

AddressInputs(A0-A20). ........................................................10

Data Input/Output (DQ0-DQ15). . . .................................................10

ChipEnable(E). ...............................................................10

Output Enable (G). .............................................................10

Write Enable (W). . .............................................................10

WriteProtect(WP)..............................................................10

Reset(RP)....................................................................10

Supply Voltage.............................................................10

DDQ

Supply Voltage............................................................10

ProgramSupplyVoltage .....................................................10

Ground. ..................................................................10

BUSOPERATIONS................................................................11

Read.........................................................................11

Write.........................................................................11

OutputDisable.................................................................11

Standby. . ....................................................................11

Automatic Standby. .............................................................11

Reset. .......................................................................11

Read Electronic Signature Command ...............................................12

Table2.BusOperations.........................................................11

COMMANDINTERFACE ...........................................................12

ReadMemoryArrayCommand....................................................12

ReadStatusRegisterCommand...................................................12

Read Electronic Signature Command ...............................................12

ReadCFIQueryCommand.......................................................12

BlockEraseCommand..........................................................12

ProgramCommand.............................................................12

Double Word Program Command . .................................................13

ClearStatusRegisterCommand...................................................13

Program/Erase Suspend Command ................................................13

Program/EraseResumeCommand ................................................13

ProtectionRegisterProgramCommand.............................................13

BlockLock-DownCommand......................................................14

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M28W320CT, M28W320CB

Table3.Commands ............................................................15

Table4.ReadElectronicSignature.................................................15

Table 5. Read Block Lock Signature ................................................16

Table6.ReadProtectionRegisterandLockRegister ..................................16

Table7.Program,EraseTimesandProgram/EraseEnduranceCycles ....................16

BLOCKLOCKING.................................................................17

LockedState..................................................................17

UnlockedState ................................................................17

Lock-DownState...............................................................17

Reading a Block’s Lock Status . . . .................................................17

LockingOperationsDuringEraseSuspend ..........................................17

Table8.BlockLockStatus .......................................................18

Table9.ProtectionStatus........................................................18

STATUSREGISTER...............................................................19

Program/EraseControllerStatus(Bit7).............................................19

Erase Suspend Status (Bit 6) .....................................................19

EraseStatus(Bit5).............................................................19

ProgramStatus(Bit4)...........................................................19

Status(Bit3)...............................................................19

ProgramSuspendStatus(Bit2)...................................................19

BlockProtectionStatus(Bit1).....................................................20

Reserved(Bit0)................................................................20

Table10.StatusRegisterBits.....................................................20

MAXIMUMRATING................................................................21

Table11.AbsoluteMaximumRatings...............................................21

DCandACPARAMETERS.........................................................22

Table 12. Operating and AC Measurement Conditions..................................22

Figure8.ACMeasurementI/OWaveform ...........................................22

Figure 9. AC Measurement Load Circuit . . . ..........................................22

Table 13. Capacitance...........................................................22

Table14.DCCharacteristics......................................................23

Figure10.ReadACWaveforms...................................................24

Table15.ReadACCharacteristics.................................................24

Figure 11. Write AC Waveforms, Write Enable Controlled . . .............................25

Table 16. Write AC Characteristics, Write Enable Controlled .............................26

Figure12.WriteACWaveforms,ChipEnableControlled................................27

Table17.WriteACCharacteristics,ChipEnableControlled .............................28

Figure13.Power-UpandResetACWaveforms.......................................29

Table18.Power-UpandResetACCharacteristics ....................................29

PACKAGE MECHANICAL . . . .......................................................30

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M28W320CT90N6

Mfr. #:

Buy M28W320CT90N6

Manufacturer:

STMicroelectronics

Description:

NOR Flash 32M (2Mx16) 90ns

Lifecycle:

New from this manufacturer.

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M28W320CT90N6