Introduction to Trusted Platform Module (TPM) 1 RPMB (Replay Protected Memory Block) Partition is a secure partition in eMMC. When writing data to RPMB, eMMC verifies the legality of the data; only designated Hosts can write to it. During data reading, it also provides a signature mechanism to ensure that the data read by the … Read more
Introduction to EMMC Circuits EMMC (Embedded Multi Media Card) is a standard specification for embedded storage primarily aimed at products like mobile phones or tablets, established by the MMC Association. EMMC integrates a controller within the package, providing a standard interface and managing flash memory.The schematic for the 8-bit data signal is shown in Figure … Read more
A smartphone is composed of many components, and besides the processor, RAM, and graphics processor, flash memory is also a crucial indicator affecting performance and read speeds. Recently, there has been much discussion on social networks about terms like UFS 2.0, eMMC 5.1, and LPDDR4. Most users are still unclear about what these terms mean … Read more
Recently, the eMMC of the product encountered some issues. In response to these issues, I read the relevant sections of the Embedded Multi-Media Card (eMMC) Electrical Standard (5.1) JESD84-B51 and recorded the eMMC boot process as follows. The above figure shows the eMMC power-on process, with the following steps: 1. Power on VCC and VCCQ, … Read more
Click the above Computer Enthusiasts to follow us Recently, there has been big news that serves as a great comfort regarding the continuously rising prices of solid-state drives (SSDs) — ultra-large capacity QLC flash memory is coming soon. Many of you might be asking, what is QLC? Today, I will talk about this matter and … Read more
In this issue, we focus on the satellite platforms and payloads for satellite internet. Satellites are mainly divided into three categories based on their purposes or payloads: communication satellites, navigation satellites, and remote sensing satellites. 01 Overview of Satellites (1) Navigation Satellites Satellite navigation is a space-based radio navigation system that uses navigation satellites as … Read more
In the past year, a trend contrary to Moore’s Law has emerged in a certain integrated circuit market – chip prices have increased! According to Moore’s Law, each chip should depreciate by half after 18 months. This market is the memory market, more precisely – DRAM memory. Over the past year, DRAM prices have risen … Read more
This article is authorized to be reproduced from the public account “Semiconductor Industry Observation”, ID: icbank, Author: L. Chenguang “ Memory is one of the important markets in semiconductors, accounting for nearly 1/3 of the semiconductor market share. Among them, in terms of sub-products of memory chips, DRAM and NAND Flash occupy over 95% of … Read more
Source: Semiconductor Industry Observation Memory, as an important component of semiconductor devices, accounts for as much as 20% of semiconductor products. As a significant type of semiconductor product, the global semiconductor market sales for memory reached $77.2 billion in 2015, representing a 23% share of the semiconductor product market, with total sales of $335.2 billion. … Read more
With the advancement of the wave of intelligence and electrification, the content of automotive chips has increased exponentially. The semiconductor content in electric vehicles is about twice that of fuel vehicles, while smart vehicles have 8-10 times more. In 2020, the global demand for automotive chips was approximately 43.9 billion units, and it is expected … Read more