General Description ......................................................................................................................................... 8
NO OPERATION ........................................................................................................................................ 36
ACTIVE ..................................................................................................................................................... 36
AUTO REFRESH ........................................................................................................................................ 40
DEEP POWER-DOWN ................................................................................................................................ 41
Truth Tables ................................................................................................................................................... 42
State Diagram ................................................................................................................................................ 47
Standard Mode Register .................................................................................................................................. 51
Burst Type ................................................................................................................................................. 52
CAS Latency .............................................................................................................................................. 53
Status Read Register ....................................................................................................................................... 57
Auto Precharge ............................................................................................................................................... 83
Concurrent Auto Precharge ........................................................................................................................ 84
AUTO REFRESH Operation ............................................................................................................................. 89
Deep Power-Down .................................................................................................................................... 93
Clock Change Frequency ................................................................................................................................ 95
Revision History ............................................................................................................................................. 96
Rev. I, Production – 12/09 ........................................................................................................................... 96
Rev. H, Production – 03/09 .......................................................................................................................... 96
Rev. G, Production – 02/09 .......................................................................................................................... 96
Rev. F, Production – 10/08 .......................................................................................................................... 96
Contents
PDF: 09005aef82d5d305
512mb_ddr_mobile_sdram_t47m.pdf – Rev. I 12/09 EN
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Micron Technology, Inc. reserves the right to change products or specifications without notice.
I have registered MY.TI for a long time due to work needs. But I haven't placed an order yet. I happened to see a few good samples in the forum activities this time, so I applied. Follow the prompts t...
I just started to learn embedded Linux. I have a smartarm2400 development board made by Zhou Ligong, and the processor is arm7tdmi. I searched a lot of information on the Internet. Some said that it d...
I have been engaged in wince and mobile program development for a while, but I have not found a good technical communication group. I hope everyone can come together to discuss and learn~ Development ...
Have you ever tried to build an nfs server on a development board? What are the script files included when building it? What functions should they achieve?...
Introduction to the principles of speech recognition technology
Automatic speech recognition (ASR) technology aims to enable computers to understand human speech and extract the textual inform...[Details]
As time goes by, people are increasingly concerned about their own and their families' health. However, existing monitoring devices for individual vital signs have struggled to gain market share du...[Details]
1. Introduction
Electronic scales are gradually replacing traditional measuring tools like springs and balances in everyday life, such as electronic price computing scales and electronic weigh...[Details]
Electric vehicles are now widespread, but they've brought with them a host of problems, the most prominent of which is charging. Small electric vehicles (EVs) are a new form of transportation in a ...[Details]
According to Nikkei, Japan has performed poorly in responding to China's power semiconductor challenges.
There are five major companies in Japan's power chip market: Mitsubishi Electric,...[Details]
In the field of intelligent driving, regulations are becoming increasingly stringent, and the technical threshold continues to rise. Especially after the traffic accident in March 2025, the Ministr...[Details]
Preface
Low-voltage motors are widely used in nonferrous metallurgical plants. Their abnormal operation not only impacts normal production but can also threaten human life. Therefore, providin...[Details]
In daily life, when we purchase a transformer, we are faced with the installation and wiring procedures. Generally speaking, large transformers such as power transformers are equipped with speciali...[Details]
Inverter power supplies on the market can generally be divided into two categories: sine wave inverters and square wave inverters. Some engineers also like to categorize pure sine wave inverters as...[Details]
We often hear about the precautions for using pure electric vehicles in winter, and many owners even develop relevant strategies, such as adopting a "charge as you go" principle for their vehicles,...[Details]
Electric vehicles are composed of three main components: electric motors, electric motors, and electric vehicles. Maintenance is much simpler than for gasoline-powered vehicles. Maintenance for ele...[Details]
Common Mode Semiconductor has officially launched the GM6503 series—a 5 V, 3 A synchronous step-down DC/DC power module designed for optical communications, servers, industrial applications, and FP...[Details]
0 Introduction
DVI (Digital Visual Interface) is a hot topic in current digital display research and application. Video processing technologies for DVI output not only address issues such as h...[Details]
Introduction: Traditionally, lead-acid batteries have primarily been used to provide backup power and power regulation based on location. In typical applications, the battery's actual use (discharg...[Details]
The drive shaft is the shaft in a universal joint that transmits power. As a high-speed, low-support rotating body, its dynamic balance is crucial. Generally, drive shafts undergo dynamic balancing...[Details]