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MT28EW256ABA1HJS-0SIT TR: 产品描述IC FLASH 256M PARALLEL 56TSOP; 产品类别存储; 文件大小989KB，共81页; 制造商Micron Technology; 官网地址http://www.mdtic.com.tw/; 标准

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MT28EW256ABA1HJS-0SIT TR概述

IC FLASH 256M PARALLEL 56TSOP

MT28EW256ABA1HJS-0SIT TR规格参数

参数名称	属性值
存储器类型	非易失
存储器格式	闪存
技术	FLASH - NOR
存储容量	256Mb （32M x 8，16M x 16）
写周期时间 - 字，页	60ns
访问时间	75ns
存储器接口	并联
电压 - 电源	2.7 V ~ 3.6 V
工作温度	-40°C ~ 85°C（TA）
安装类型	表面贴装
封装/外壳	56-TFSOP（0.724"，18.40mm 宽）
供应商器件封装	56-TSOP（14x20）

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256Mb: x8/x16, 3V, MT28EW Embedded Parallel NOR

Features

Parallel NOR Flash Embedded Memory

MT28EW256ABA

Features

• Single-level cell (SLC) process technology

• Density: 256Mb

• Supply voltage

– V

= 2.7–3.6V (program, erase, read)

– V

CCQ

= 1.65 - V

(I/O buffers)

• Asynchronous random/page read

– Page size: 16 words or 32 bytes

– Page access: 20ns

– Random access: 70ns (V

= V

CCQ

= 2.7-3.6V)

– Random access: 75ns (V

CCQ

= 1.65-V

)

• Buffer program (512-word program buffer)

– 2.0 MB/s (TYP) when using full buffer program

– 2.5 MB/s (TYP) when using accelerated buffer

program (V

)

• Word/Byte program: 25us per word (TYP)

• Block erase (128KB): 0.2s (TYP)

• Memory organization

– Uniform blocks: 128KB or 64KW each

– x8/x16 data bus

• Program/erase suspend and resume capability

– Read from another block during a PROGRAM

SUSPEND operation

– Read or program another block during an ERASE

SUSPEND operation

• Unlock bypass, block erase, chip erase, and write to

buffer capability

• BLANK CHECK operation to verify an erased block

• CYCLIC REDUNDANCY CHECK (CRC) operation to

verify a program pattern

• V

/WP# protection

– Protects first or last block regardless of block

protection settings

• Software protection

– Volatile protection

– Nonvolatile protection

– Password protection

• Extended memory block

– 128-word (256-byte) block for permanent, secure

identification

– Programmed or locked at the factory or by the

customer

• JESD47-compliant

– 100,000 (minimum) ERASE cycles per block

– Data retention: 20 years (TYP)

• Package

– 56-pin TSOP 14 x 20mm (JS)

– 64-ball LBGA, 11 x 13mm (PC)

– 56-ball VFBGA, 7 x 9mm (PN)

• RoHS-compliant, halogen-free packaging

• Operating temperature

– Ambient: –40°C to +85°C

PDF: 09005aef85477990

mt28e-W256-ABA-S-IT.pdf - Rev. G 05/18 EN

Products and specifications discussed herein are subject to change by Micron without notice.

Micron Technology, Inc. reserves the right to change products or specifications without notice.

256Mb: x8/x16, 3V, MT28EW Embedded Parallel NOR

Features

Contents

Important Notes and Warnings ......................................................................................................................... 7

General Description ......................................................................................................................................... 8

Signal Assignments ........................................................................................................................................... 9

Signal Descriptions ......................................................................................................................................... 12

Memory Organization .................................................................................................................................... 14

Memory Configuration ............................................................................................................................... 14

Memory Map ............................................................................................................................................. 14

Bus Operations ............................................................................................................................................... 15

Read .......................................................................................................................................................... 15

Write .......................................................................................................................................................... 15

Standby ..................................................................................................................................................... 16

Output Disable ........................................................................................................................................... 16

Reset .......................................................................................................................................................... 16

Registers ........................................................................................................................................................ 17

Data Polling Register .................................................................................................................................. 17

Lock Register .............................................................................................................................................. 22

Standard Command Definitions – Address-Data Cycles .................................................................................... 24

READ and AUTO SELECT Operations .............................................................................................................. 27

READ/RESET Command ............................................................................................................................ 27

READ CFI Command .................................................................................................................................. 27

AUTO SELECT Command ........................................................................................................................... 27

Read Electronic Signature ........................................................................................................................... 28

Cyclic Redundancy Check Operation ............................................................................................................... 29

CYCLIC REDUNDANCY CHECK Command ................................................................................................. 29

Cyclic Redundancy Check Operation Command Sequence .......................................................................... 29

Bypass Operations .......................................................................................................................................... 32

UNLOCK BYPASS Command ...................................................................................................................... 32

UNLOCK BYPASS RESET Command ............................................................................................................ 32

Program Operations ....................................................................................................................................... 33

PROGRAM Command ................................................................................................................................ 33

UNLOCK BYPASS PROGRAM Command ..................................................................................................... 33

WRITE TO BUFFER PROGRAM Command .................................................................................................. 33

UNLOCK BYPASS WRITE TO BUFFER PROGRAM Command ....................................................................... 36

WRITE TO BUFFER PROGRAM CONFIRM Command .................................................................................. 36

BUFFERED PROGRAM ABORT AND RESET Command ................................................................................ 36

PROGRAM SUSPEND Command ................................................................................................................ 36

PROGRAM RESUME Command .................................................................................................................. 37

ACCELERATED BUFFERED PROGRAM Operations .......................................................................................... 37

Erase Operations ............................................................................................................................................ 38

CHIP ERASE Command .............................................................................................................................. 38

UNLOCK BYPASS CHIP ERASE Command ................................................................................................... 38

BLOCK ERASE Command ........................................................................................................................... 38

UNLOCK BYPASS BLOCK ERASE Command ................................................................................................ 39

ERASE SUSPEND Command ....................................................................................................................... 39

ERASE RESUME Command ........................................................................................................................ 40

ACCELERATED CHIP ERASE Operations ......................................................................................................... 40

BLANK CHECK Operation .............................................................................................................................. 41

BLANK CHECK Commands ........................................................................................................................ 41

Device Protection ........................................................................................................................................... 42

Hardware Protection .................................................................................................................................. 42

PDF: 09005aef85477990

mt28e-W256-ABA-S-IT.pdf - Rev. G 05/18 EN

Micron Technology, Inc. reserves the right to change products or specifications without notice.

256Mb: x8/x16, 3V, MT28EW Embedded Parallel NOR

Features

Software Protection ....................................................................................................................................

Volatile Protection Mode .............................................................................................................................

Nonvolatile Protection Mode ......................................................................................................................

Password Protection Mode ..........................................................................................................................

Block Protection Command Definitions – Address-Data Cycles ........................................................................

Protection Operations ....................................................................................................................................

LOCK REGISTER Commands ......................................................................................................................

PASSWORD PROTECTION Commands .......................................................................................................

NONVOLATILE PROTECTION Commands ..................................................................................................

NONVOLATILE PROTECTION BIT LOCK BIT Commands ............................................................................

VOLATILE PROTECTION Commands ..........................................................................................................

EXTENDED MEMORY BLOCK Commands ..................................................................................................

EXIT PROTECTION Command ....................................................................................................................

Common Flash Interface ................................................................................................................................

Power-Up and Reset Characteristics ................................................................................................................

Absolute Ratings and Operating Conditions .....................................................................................................

DC Characteristics ..........................................................................................................................................

Read AC Characteristics ..................................................................................................................................

Write AC Characteristics .................................................................................................................................

Data Polling/Toggle AC Characteristics ............................................................................................................

Program/Erase Characteristics ........................................................................................................................

Package Dimensions .......................................................................................................................................

Revision History .............................................................................................................................................

Rev. G –05/18 .............................................................................................................................................

Rev. F – 11/16 .............................................................................................................................................

Rev. E – 4/16 ...............................................................................................................................................

Rev. D – 5/15 ..............................................................................................................................................

Rev. C – 4/15 ...............................................................................................................................................

Rev. B – 1/15 ...............................................................................................................................................

Rev. A – 6/14 ...............................................................................................................................................

PDF: 09005aef85477990

mt28e-W256-ABA-S-IT.pdf - Rev. G 05/18 EN

Micron Technology, Inc. reserves the right to change products or specifications without notice.

256Mb: x8/x16, 3V, MT28EW Embedded Parallel NOR

Features

List of Figures

Figure 1: Part Number Chart ............................................................................................................................ 2

Figure 2: Logic Diagram ................................................................................................................................... 8

Figure 3: 56-Pin TSOP (Top View) .................................................................................................................... 9

Figure 4: 64-Ball LBGA (Top View – Balls Down) ............................................................................................. 10

Figure 5: 56-Ball VFBGA (Top View – Balls Down) ........................................................................................... 11

Figure 6: Data Polling Flowchart .................................................................................................................... 19

Figure 7: Toggle Bit Flowchart ........................................................................................................................ 20

Figure 8: Data Polling/Toggle Bit Flowchart .................................................................................................... 21

Figure 9: Lock Register Program Flowchart ..................................................................................................... 23

Figure 10: Boundary Condition of Program Buffer Size .................................................................................... 34

Figure 11: WRITE TO BUFFER PROGRAM Flowchart ...................................................................................... 35

Figure 12: Software Protection Scheme .......................................................................................................... 44

Figure 13: Set/Clear Nonvolatile Protection Bit Algorithm Flowchart ............................................................... 50

Figure 14: Power-Up Timing .......................................................................................................................... 57

Figure 15: Reset AC Timing – No PROGRAM/ERASE Operation in Progress ...................................................... 58

Figure 16: Reset AC Timing During PROGRAM/ERASE Operation .................................................................... 58

Figure 17: AC Measurement Load Circuit ....................................................................................................... 60

Figure 18: AC Measurement I/O Waveform ..................................................................................................... 60

Figure 19: Random Read AC Timing (8-Bit Mode) ........................................................................................... 64

Figure 20: Random Read AC Timing (16-Bit Mode) ......................................................................................... 65

Figure 21: BYTE# Transition Read AC Timing .................................................................................................. 65

Figure 22: Page Read AC Timing (16-Bit Mode) ............................................................................................... 66

Figure 23: WE#-Controlled Program AC Timing (8-Bit Mode) .......................................................................... 68

Figure 24: WE#-Controlled Program AC Timing (16-Bit Mode) ......................................................................... 69

Figure 25: CE#-Controlled Program AC Timing (8-Bit Mode) ........................................................................... 71

Figure 26: CE#-Controlled Program AC Timing (16-Bit Mode) ......................................................................... 72

Figure 27: Chip/Block Erase AC Timing (16-Bit Mode) .................................................................................... 73

Figure 28: Accelerated Program AC Timing ..................................................................................................... 73

Figure 29: Data Polling AC Timing .................................................................................................................. 74

Figure 30: Toggle/Alternative Toggle Bit Polling AC Timing .............................................................................. 75

Figure 31: 56-Pin TSOP – 14mm x 20mm (Package Code: JS) ............................................................................ 78

Figure 32: 64-Ball LBGA – 11mm x 13mm (Package Code: PC) ......................................................................... 79

Figure 33: 56-Ball VFBGA – 7mm x 9mm (Package Code: PN) .......................................................................... 80

PDF: 09005aef85477990

mt28e-W256-ABA-S-IT.pdf - Rev. G 05/18 EN

Micron Technology, Inc. reserves the right to change products or specifications without notice.

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