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MR0A16A Schematic ( PDF Datasheet ) - Freescale Semiconductor

Teilenummer MR0A16A
Beschreibung 64K x 16-Bit 3.3-V Asynchronous Magnetoresistive RAM
Hersteller Freescale Semiconductor
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Gesamt 20 Seiten
MR0A16A Datasheet, Funktion
Freescale Semiconductor
Data Sheet: Advance Information
Document Number: MR0A16A
Rev. 0, 6/2007
64K x 16-Bit 3.3-V
Asynchronous
Magnetoresistive RAM
MR0A16A
44-TSOP
Case 924A-02
Introduction
The MR0A16A is a 1,048,576-bit magnetoresistive
random access memory (MRAM) device
organized as 65,536 words of 16 bits. The
www.DataSheet4U.com
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 (-40˚C to 85˚C) and Extended
(-40˚C to 105˚C) ambient temperature ranges.
Features
• Single 3.3-V power supply
• Commercial temperature range (0˚C to
70˚C), Industrial temperature range (-40˚C
to 85˚C) and Extended temperature range
(-40˚C to 105˚C)
• 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
This document contains information on a new product under development. Freescale
reserves the right to change or discontinue this product without notice.
© Freescale Semiconductor, Inc., 2007. All rights reserved.






MR0A16A Datasheet, Funktion
Electrical Specifications
Table 8. ac Measurement Conditions
Parameter
Logic input timing measurement reference level
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
Value
1.5 V
1.5 V
0 or 3.0 V
2 ns
See Figure 3A
See Figure 3B
OUTPUT
ZD = 50 Ω
RL = 50 Ω
VL = 1.5 V
OUTPUT
600 Ω
+3.3 V
725 Ω
5 pF
AB
Figure 3. Output Load for ac Test
MR0A16A Advanced Information Data Sheet, Rev. 0
6 Freescale Semiconductor

6 Page









MR0A16A pdf, datenblatt
Timing Specifications
A (ADDRESS)
E (CHIP ENABLE)
W (WRITE ENABLE)
LB, UB (BYTE ENABLE)
D (DATA IN)
Q (DATA OUT)
tAVAV
tAVEH
tAVEL
tELEH
tELWH
tEHAX
tDVEH
DATA VALID
Hi-Z
Figure 7. Write Cycle 2 (E Controlled)
tEHDX
MR0A16A Advanced Information Data Sheet, Rev. 0
12 Freescale Semiconductor

12 Page





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