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At present, in most confidential communication equipment, general-purpose CPU and dedicated hardware circuit are mainly used to control the dedicated cryptographic chip to realize two types of cr...[Details]
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u-boot is a bootloader widely used in embedded systems. It not only supports numerous platforms and reference boards, but also supports a variety of commands that allow users to perform various ope...[Details]
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A spectrum analyzer is fundamentally a test instrument that can measure various parameters in a circuit or system in the radio frequency range. Spectrum analyzer is one of the important tests used ...[Details]
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1. ROM: Read-only memory. The read-only storage area of a microcontroller is mostly used to store programs, also called program memory. The 51 microcontroller is an EPROM, and the so-called EPROM i...[Details]
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1． P0 (80H) P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.1 P0.0 2. SP stack pointer (81H) 3. DPTR data pointer (composed of DPH and DPL) DPL data pointer lower eight bits (82H) DPH data pointer high e...[Details]
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Summary: 1. Different control chips may have different LCD interface definitions or register definitions. 2. There are two display modes: parallel and serial. It is said that the serial mode cannot r...[Details]
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When users buy high-power UPS, they often face the problem of not knowing how to choose between industrial frequency and high frequency. They are not sure whether it is better to buy an industrial ...[Details]
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Last June, UMC announced that it would spend tens of billions of yen to purchase all the shares of Mie Fujitsu Semiconductor Co., Ltd. (MIFS), a 12-inch wafer fab jointly owned by UMC and Fujitsu Sem...[Details]
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In this Power Design Tip and the next one, we will look at a simple method for estimating the temperature rise of a hot-swap MOSFET. Hot-swap circuits are used to limit the inrush current when a c...[Details]
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Ten years ago, every company was an Internet company; ten years later, every company is a car company. You may have recently had this feeling: by the end of this year, I am afraid that there will b...[Details]
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For a long time, lithium iron phosphate batteries have been in a state of "blooming within the wall and smelling good inside the wall" because their battery life and low-temperature performance are...[Details]
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0 Introduction The background of this study is "AUV autonomous navigation technology based on simultaneous positioning and map construction method". The application environment is underwater. Th...[Details]
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This writing method is to nest assembly in C. The exact delay time = 2*t*T+5*T, T is one machine cycle. For 8051, If t=1, then the execution of this function should be 7us. If it is STC12, then ...[Details]
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The double-T frequency selection network oscillation circuit is shown in Figure 5.3-28.
The neon tube in the positive feedback loop of the circuit in Figure 5.3-28A plays a role in a...[Details]
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We have compiled 8 common error types that PLC repair personnel need to know when a PLC presents an abnormal alarm.
1. CPU abnormality
When the CPU alarm is abnormal, you shou...[Details]
MEMS sensors
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