-
1 SWI interrupt processing steps: 1) When entering an interrupt, pc- lr, cpsr- spsr, and cpsr_mode are set to privileged mode, all of which are completed by hardware. 2) Registering the interrupt vec...[Details]
-
There are also two ways of wiring: automatic wiring and interactive wiring. Before automatic wiring, you can use interactive wiring to pre-wire the lines with strict requirements. The edge lines of...[Details]
-
UPS control loop analysis A typical UPS control loop is shown in Figure 1. It contains three control loops. The most important loop is the instantaneous voltage control loop, followed by the DC volt...[Details]
-
Semiconductor manufacturers are expanding capital expenditures in 2021 and beyond to help alleviate chip shortages. In response to the industry's rumors of whether excessive capital expenditures will...[Details]
-
When you write an automation program with 50 cylinders or even more, you have to write the same control program for each cylinder, which is really tedious. You have to copy the same control program...[Details]
-
At this point, the development board is running. The system migration part will be discussed later. Let's take two examples to make the LED light up and the buzzer sound. 1. LED lights up (1) LED p...[Details]
-
The "2019 Global Flash Memory Summit" was grandly held at the Hangzhou International Expo Center (G20 main venue), under the guidance of the Zhejiang Provincial Department of Economy and Information ...[Details]
-
Recently, the well-known mobile phone review organization DXOMARK announced the camera scores of Apple iPhone 12 mini, with a photo score of 132 points, a zoom score of 41 points, a video recording s...[Details]
-
Team of wireless experts to showcase Cellular IoT, Wi-Fi, Bluetooth LE, nRF Cloud positioning, security and device management services, Matter, DECT NR+, LE Audio and PMIC solutions at region’s p...[Details]
-
3D fingerprint information collection Android
Fingerprint information has been widely used as a means of identity recognition, but traditional fingerprint information has the disadvantage of being ...[Details]
-
At this year's CES, the "attendance rate" of lidar companies was probably the highest. Many car companies and technology companies took "sick leave" due to the epidemic, but domestic lidar companies ...[Details]
-
Why did Huawei have such a dramatic plot in 2019? It all started when they became China's leading technology company. Did Huawei develop smoothly in 2019? Rather than saying it was smooth, it should ...[Details]
-
W LED is popular. For different application requirements, PWM and analog dimming drivers will excel in different fields. In view of this, the industry has developed solutions that can switch betw...[Details]
-
H(s) includes the transfer function of voltage detection, controller and PWM. The transfer function of a general voltage detection circuit is a voltage divider ratio k1. For the simplest pulse widt...[Details]
-
UC3902 peripheral circuit diagram
Figure UC3902 peripheral circuit diagram
The peripheral circuit of UC3902 is shown in Figure 2. This chip requires only a few external components. Before the ...[Details]
Domestic Chip Exchange
京公网安备 11010802033920号
EEWORLD