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128Mb: x8/x16, 3V, MT28EW Embedded Parallel NOR
Features
Parallel NOR Flash Embedded Memory
MT28EW128ABA
Features
• Single-level cell (SLC) process technology
• Density: 128Mb
• Supply voltage
– VCC = 2.7–3.6V (program, erase, read)
– VCCQ = 1.65 - VCC (I/O buffers)
• Asynchronous random/page read
– Page size: 16 words or 32 bytes
– Page access: 20ns
– Random access: 70ns (VCC = VCCQ = 2.7-3.6V)
– Random access: 75ns (VCCQ = 1.65-VCC)
• 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 (VHH)
• 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
• VPP/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: 09005aef85c59413
mt28e-qlhp-W128-ABA-S-IT.pdf - Rev. F 05/18 EN
1 Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2014 Micron Technology, Inc. All rights reserved.
Products and specifications discussed herein are subject to change by Micron without notice.

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128Mb: x8/x16, 3V, MT28EW Embedded Parallel NOR
Features
Part Numbering Information
For available options, such as packages or high/low protection, or for further information, contact your Micron
sales representative. Part numbers can be verified at www.micron.com. Feature and specification comparison by
device type is available at www.micron.com/products. Contact the factory for devices not found.
Figure 1: Part Number Chart
MT 28E W 512 A B A 1 H JS - 0 S IT ES
Micron Technology
Part Family
28E = Embedded Parallel NOR
Voltage
W = 2.7–3.6V VCC core
Density
128 = 128Mb
256 = 256Mb
512 = 512Mb
01G = 1Gb
02G = 2Gb
Stack
A = Single die
B = Two die
Device Generation
B = 2nd generation
Die Revision
A = Rev A
Configuration
1 = x8, x16
Production Status
Blank = Production
ES = Engineering sample
Operating Temperature
IT = –40°C to +85°C
Special Options
S = Standard
Security Features
0 = Standard default security
1 = OTP configurable
Package Codes
JS = 56-pin TSOP, 14mm x 20mm
PN = 56-ball VFBGA, 7mm x 9mm
PC = 64-ball LBGA, 11mm x 13mm
(All packages are lead-free, halogen-free,
RoHS-compliant)
Block Structure
H = High lock
L = Low lock
PDF: 09005aef85c59413
mt28e-qlhp-W128-ABA-S-IT.pdf - Rev. F 05/18 EN
2 Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2014 Micron Technology, Inc. All rights reserved.

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128Mb: 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: 09005aef85c59413
mt28e-qlhp-W128-ABA-S-IT.pdf - Rev. F 05/18 EN
3 Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2014 Micron Technology, Inc. All rights reserved.

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128Mb: x8/x16, 3V, MT28EW Embedded Parallel NOR
Features
Software Protection .................................................................................................................................... 42
Volatile Protection Mode ............................................................................................................................. 43
Nonvolatile Protection Mode ...................................................................................................................... 43
Password Protection Mode .......................................................................................................................... 43
Block Protection Command Definitions – Address-Data Cycles ........................................................................ 46
Protection Operations .................................................................................................................................... 49
LOCK REGISTER Commands ...................................................................................................................... 49
PASSWORD PROTECTION Commands ....................................................................................................... 49
NONVOLATILE PROTECTION Commands .................................................................................................. 49
NONVOLATILE PROTECTION BIT LOCK BIT Commands ............................................................................ 50
VOLATILE PROTECTION Commands .......................................................................................................... 51
EXTENDED MEMORY BLOCK Commands .................................................................................................. 51
EXIT PROTECTION Command .................................................................................................................... 52
Common Flash Interface ................................................................................................................................ 53
Power-Up and Reset Characteristics ................................................................................................................ 57
Absolute Ratings and Operating Conditions ..................................................................................................... 59
DC Characteristics .......................................................................................................................................... 61
Read AC Characteristics .................................................................................................................................. 63
Write AC Characteristics ................................................................................................................................. 67
Data Polling/Toggle AC Characteristics ............................................................................................................ 74
Program/Erase Characteristics ........................................................................................................................ 76
Package Dimensions ....................................................................................................................................... 78
Revision History ............................................................................................................................................. 81
Rev. F –05/18 .............................................................................................................................................. 81
Rev. E – 11/16 ............................................................................................................................................. 81
Rev. D – 04/16 ............................................................................................................................................. 81
Rev. C – 07/15 ............................................................................................................................................. 81
Rev. B – 03/15 ............................................................................................................................................. 81
Rev. A – 07/14 ............................................................................................................................................. 81
PDF: 09005aef85c59413
mt28e-qlhp-W128-ABA-S-IT.pdf - Rev. F 05/18 EN
4 Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2014 Micron Technology, Inc. All rights reserved.

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128Mb: 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: 09005aef85c59413
mt28e-qlhp-W128-ABA-S-IT.pdf - Rev. F 05/18 EN
5 Micron Technology, Inc. reserves the right to change products or specifications without notice.
© 2014 Micron Technology, Inc. All rights reserved.