mr0a16a Freescale Semiconductor, Inc, mr0a16a Datasheet

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mr0a16a

Manufacturer Part Number
mr0a16a
Description
64k X 16-bit 3.3-v Asynchronous Magnetoresistive Ram
Manufacturer
Freescale Semiconductor, Inc
Datasheet

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Freescale Semiconductor
Data Sheet
64K x 16-Bit 3.3-V
Asynchronous
Magnetoresistive RAM
Introduction
The MR0A16A is a 1,048,576-bit magnetoresistive
random access memory (MRAM) device
organized as 65,536 words of 16 bits. The
MR0A16A is equipped with chip enable (E), write
enable (W), and output enable (G) pins, allowing
for significant system design flexibility without bus
contention. Because the MR0A16A has separate
byte-enable controls (LB and UB), individual bytes
can be written and read.
MRAM is a nonvolatile memory technology that
protects data in the event of power loss and does
not require periodic refreshing. The MR0A16A is
the ideal memory solution for applications that
must permanently store and retrieve critical data
quickly.
The MR0A16A is available in a 400-mil, 44-lead
plastic small-outline TSOP type-II package with an
industry-standard center power and ground SRAM
pinout.
The MR0A16A is available in Commercial (0°C to
70°C), Industrial (
(
© Freescale Semiconductor, Inc., 2007. All rights reserved.
This document contains information on a new product under development. Freescale
reserves the right to change or discontinue this product without notice.
-
40°C to 105°C) ambient temperature ranges.
-
40°C to 85°C) and Extended
Features
Single 3.3-V power supply
Commercial temperature range (0°C to
70°C), Industrial temperature range (
to 85°C) and Extended temperature range
(
Symmetrical high-speed read and write with
fast access time (35 ns)
Flexible data bus control — 8 bit or 16 bit
access
Equal address and chip-enable access
times
Automatic data protection with low-voltage
inhibit circuitry to prevent writes on power
loss
All inputs and outputs are
transistor-transistor logic (TTL) compatible
Fully static operation
Full nonvolatile operation with 20 years
minimum data retention
-
40°C to 105°C)
MR0A16A
Document Number: MR0A16A
44-TSOP
Case 924A-02
Rev. 2, 11/2007
-
40°C

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mr0a16a Summary of contents

Page 1

... The MR0A16A is available in a 400-mil, 44-lead plastic small-outline TSOP type-II package with an industry-standard center power and ground SRAM pinout. The MR0A16A is available in Commercial (0°C to 70°C), Industrial ( 40°C to 85°C) and Extended - ( 40°C to 105°C) ambient temperature ranges. ...

Page 2

... A12 A11 A10 Figure 2. MR0A16A in 44-Pin TSOP Type II Package MR0A16A Advanced Information Data Sheet, Rev UPPER BYTE OUTPUT ENABLE LOWER BYTE OUTPUT ENABLE 8 8 ROW COLUMN DECODER DECODER SENSE AMPS 16 64K x 16 BIT MEMORY ...

Page 3

... The device also contains protection against external magnetic fields. Precautions should be taken to avoid application of any magnetic field more intense than the maximum field intensity specified in the maximum ratings. MR0A16A Advanced Information Data Sheet, Rev. 2 Freescale Semiconductor Table 2. Operating Modes 1 ...

Page 4

... Memory is designed to prevent writing for all input pin conditions if V falls below minimum (max 0.3 Vdc (min) = –0.5 Vdc MR0A16A Advanced Information Data Sheet, Rev Table 3. Absolute Maximum Ratings Table 4. Operating Conditions Symbol ...

Page 5

... NOTES: 1 All active current measurements are measured with one address transition per cycle. Parameter Address input capacitance Control input capacitance Input/output capacitance NOTES 1.0 MHz 3 MR0A16A Advanced Information Data Sheet, Rev. 2 Freescale Semiconductor Table 5. dc Characteristics Symbol I lkg(I) I lkg( ...

Page 6

... Logic output timing measurement reference level Logic input pulse levels Input rise/fall time Output load for low and high impedance parameters Output load for all other timing parameters OUTPUT MR0A16A Advanced Information Data Sheet, Rev Table 8. ac Measurement Conditions Parameter = 50 Ω Z ...

Page 7

... MR0A16A Advanced Information Data Sheet, Rev. 2 Freescale Semiconductor This page is intentionally blank. Electrical Specifications 7 ...

Page 8

... Addresses valid before or at the same time E goes low. 4 This parameter is sampled and not 100% tested. 5 Transition is measured ±200 mV from steady-state voltage. MR0A16A Advanced Information Data Sheet, Rev Table 9. Read Cycle Timing Symbol t AVAV t AVQV ...

Page 9

... A (ADDRESS) Q (DATA OUT) PREVIOUS DATA VALID NOTES: Device is continuously selected (E ≤ (ADDRESS) E (CHIP ENABLE) G (OUTPUT ENABLE) LB, UB (BYTE ENABLE) Q (DATA OUT) MR0A16A Advanced Information Data Sheet, Rev. 2 Freescale Semiconductor t AVAV t AXQX t AVQV , G ≤ Figure 4. Read Cycle 1 t AVAV t AVQV ...

Page 10

... All write cycle timings are referenced from the last valid address to the first transition address. 7 This parameter is sampled and not 100% tested. 8 Transition is measured ±200 mV from steady-state voltage any given voltage or temperature, t MR0A16A Advanced Information Data Sheet, Rev Symbol t AVAV t AVWL ...

Page 11

... A (ADDRESS) E (CHIP ENABLE) W (WRITE ENABLE) LB, UB (BYTE ENABLE) D (DATA IN) Hi-Z Q (DATA OUT) MR0A16A Advanced Information Data Sheet, Rev. 2 Freescale Semiconductor t AVAV t AVWH t WLEH t WLWH t AVWL t DATA VALID t WLQZ Hi-Z Figure 6. Write Cycle 1 (W Controlled) Timing Specifications t WHAX t DVWH WHDX t WHQX 11 ...

Page 12

... If E goes low at the same time or after W goes low, the output will remain in a high-impedance state goes high at the same time or before W goes high, the output will remain in a high-impedance state. MR0A16A Advanced Information Data Sheet, Rev Symbol t AVAV ...

Page 13

... A (ADDRESS) E (CHIP ENABLE) W (WRITE ENABLE) LB, UB (BYTE ENABLE) D (DATA IN) Q (DATA OUT) MR0A16A Advanced Information Data Sheet, Rev. 2 Freescale Semiconductor t AVAV t AVEH t AVEL Hi-Z Figure 7. Write Cycle 2 (E Controlled) Timing Specifications t EHAX t ELEH t ELWH t t DVEH EHDX DATA VALID 13 ...

Page 14

... The minimum time between E being asserted low in one cycle to E being asserted low in a subsequent cycle is the same as the minimum cycle time allowed for the device. 7 All write cycle timings are referenced from the last valid address to the first transition address. MR0A16A Advanced Information Data Sheet, Rev Symbol ...

Page 15

... A (ADDRESS) E (CHIP ENABLE) LB, UB (BYTE ENABLE) W (WRITE ENABLE) D (DATA IN) Hi-Z Q (DATA OUT) Figure 8. Write Cycle 3 (LB/UB Controlled) MR0A16A Advanced Information Data Sheet, Rev. 2 Freescale Semiconductor t AVAV t AVBH t t AVBL BLEH t BLWH t DVBH DATA VALID Hi-Z Timing Specifications t BHAX t BHDX 15 ...

Page 16

... Freescale MRAM Memory Prefix Density Code ( Mb) Memory Type (A = async sync) Package Information Pin Package Device Count MR0A16A 44 MR0A16A Advanced Information Data Sheet, Rev (Order by Full Part Number Table 13. Package Information Designator Case No ...

Page 17

... Sep 2007 Table 6: Applied values to TBD’s in IDD specifications Nov 2007 Table 2: Changed IDDA to IDDR or IDDW. Mechanical Drawing The following pages detail the package available to MR0A16A. MR0A16A Advanced Information Data Sheet, Rev. 2 Freescale Semiconductor Revision History Description of Change Revision History ...

Page 18

... Mechanical Drawing MR0A16A Advanced Information Data Sheet, Rev Freescale Semiconductor ...

Page 19

... MR0A16A Advanced Information Data Sheet, Rev. 2 Freescale Semiconductor Mechanical Drawing 19 ...

Page 20

... Mechanical Drawing MR0A16A Advanced Information Data Sheet, Rev Freescale Semiconductor ...

Page 21

... MR0A16A Advanced Information Data Sheet, Rev. 2 Freescale Semiconductor Mechanical Drawing 21 ...

Page 22

... Learn More: For more information about Freescale Semiconductor products, please visit http://www.freescale.com MR0A16A Rev. 2, 11/2007 Information in this document is provided solely to enable system and software implementers to use Freescale Semiconductor products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits or integrated circuits based on the information in this document ...

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