MR25H256 PDF даташит
Спецификация MR25H256 изготовлена «Everspin Technologies» и имеет функцию, называемую «256Kb Serial SPI MRAM». |
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Детали детали
Номер произв | MR25H256 |
Описание | 256Kb Serial SPI MRAM |
Производители | Everspin Technologies |
логотип |
24 Pages
No Preview Available ! |
MR25H256 / MR25H256A
FEATURES
• No write delays
• Unlimited write endurance
• Data retention greater than 20 years
• Automatic data protection on power loss
• Block write protection
• Fast, simple SPI interface with up to 40 MHz clock rate
• 2.7 to 3.6 Volt power supply range
• Low current sleep mode
• Industrial and Automotive Grade 1 and Grade 3 tempera-
tures
• Available in 8-DFN or 8-DFN Small Flag RoHS-compliant
package.
• Direct replacement for serial EEPROM, Flash, FeRAM
• Industrial Grade and AEC-Q100 Grade 1 and Grade 3 options
• Moisture Sensitivity MSL-3
256Kb Serial SPI MRAM
8-DFN
Small Flag 8-DFN
RoHS
Product Versions and Options
MR25H256A has been released for mass production and is recommended for all new designs.
MR25H256 remains in mass production but will be subject to eventual phase out and end of life
and is not recommended for new designs.Both versions have the same specifications.
MR25H256A Product Options
Grade
Industrial
Automotive AEC-Q100 Grade 3
Automotive AEC-Q100 Grade 1
Temperature Package
-40 to +85 C 8-DFN Small Flag
-40 to +85 C 8-DFN Small Flag
-40 to +125 C 8-DFN Small Flag
MR25H256 Product Options (Not recommended for new designs)
Grade
Temperature Package
Industrial
-40 to +85 C
8-DFN Small Flag
8-DFN
Automotive AEC-Q100 Grade 1
-40 to +125 C
8-DFN Small Flag
8-DFN
Copyright © 2017 Everspin Technologies
1 MR25H256 / MR25H256A Rev. 1.4, 2/2017
No Preview Available ! |
MR25H256 / MR25H256A
TABLE OF CONTENTS
OVERVIEW.............................................................................................................................................4
Figure 1 – Block Diagram............................................................................................................................................ 4
System Configuration......................................................................................................................4
Figure 2 – System Configuration.............................................................................................................................. 4
DEVICE PIN ASSIGNMENT....................................................................................................................5
Figure 3 – Pin Diagram All 8-DFN Packages......................................................................................................... 5
Table 1 – Pin Functions All 8-DFN Packages........................................................................................................ 5
SPI COMMUNICATIONS PROTOCOL....................................................................................................6
Table 2 – Command Codes........................................................................................................................................ 6
Status Register and Block Write Protection...................................................................................6
Table 3 – Status Register Bit Assignments............................................................................................................ 6
Table 4 – Block Memory Write Protection............................................................................................................. 7
Table 5 – Memory Protection Modes..................................................................................................................... 7
Read Status Register (RDSR)............................................................................................................7
Figure 4 – RDSR.............................................................................................................................................................. 7
Write Enable (WREN)........................................................................................................................8
Figure 5 – WREN............................................................................................................................................................. 8
Write Disable (WRDI)........................................................................................................................8
Figure 6 – WRDI.............................................................................................................................................................. 8
Write Status Register (WRSR)..........................................................................................................9
Figure 7 – WRSR.............................................................................................................................................................. 9
Read Data Bytes (READ)................................................................................................................ 10
Figure 8 – READ............................................................................................................................................................ 10
Write Data Bytes (WRITE).............................................................................................................. 11
Figure 9 – WRITE........................................................................................................................................................... 11
Enter Sleep Mode (SLEEP)............................................................................................................. 12
Figure 10 – SLEEP......................................................................................................................................................... 12
Copyright © 2017 Everspin Technologies
2 MR25H256 / MR25H256A Rev. 1.4, 2/2017
No Preview Available ! |
MR25H256 / MR25H256A
Table of Contents - Continued
Exit Sleep Mode (WAKE)................................................................................................................ 12
Figure 11 – WAKE......................................................................................................................................................... 12
ELECTRICAL SPECIFICATIONS.......................................................................................................... 13
Absolute Maximum Ratings......................................................................................................... 13
Table 6 – Absolute Maximum Ratings..................................................................................................................13
Table 7 – Operating Conditions..............................................................................................................................14
Table 8 – DC Characteristics.....................................................................................................................................14
Table 9 – Power Supply Characteristics...............................................................................................................14
TIMING SPECIFICATIONS.................................................................................................................. 15
Table 10 – Capacitance.............................................................................................................................................. 15
Table 11 – AC Measurement Conditions.............................................................................................................15
Figure 12 – Output Load for Impedance Parameter Measurements........................................................15
Figure 13 – Output Load for All Other Parameter Measurements.............................................................15
Power-Up Timing........................................................................................................................... 16
Table 12 – Power-Up................................................................................................................................................... 16
Figure 14 – Power-Up Timing.................................................................................................................................16
Synchronous Data Timing............................................................................................................. 17
Table 13 – AC Timing Parameters..........................................................................................................................17
Figure 15 – Synchronous Data Timing.................................................................................................................19
Figure 16 – HOLD Timing.........................................................................................................................................19
ORDERING INFORMATION................................................................................................................ 20
Table 14 – Ordering Part Number Decoder Table............................................................................................20
Table 15 – Ordering Part Numbers........................................................................................................................20
PACKAGE OUTLINE DRAWINGS........................................................................................................ 21
Figure 17 – 8-DFN Small Flag Package.................................................................................................................21
Figure 18 – 8-DFN Package......................................................................................................................................22
REVISION HISTORY............................................................................................................................ 23
HOW TO REACH US............................................................................................................................ 24
Copyright © 2017 Everspin Technologies
3 MR25H256 / MR25H256A Rev. 1.4, 2/2017
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Номер в каталоге | Описание | Производители |
MR25H256 | 256Kb Serial SPI MRAM | Everspin Technologies |
MR25H256A | 256Kb Serial SPI MRAM | Everspin Technologies |
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