PORT PINS ...................................................................................................................................................... 10
OTHER PINS ................................................................................................................................................... 12
PIN I/O CIRCUIT AND RECOMMENDED CONNECTION OF UNUSED PINS ...................................... 13
4.
5.
MEMORY SPACE .................................................................................................................................... 15
PERIPHERAL HARDWARE FUNCTION FEATURES ............................................................................ 16
CLOCK OUTPUT CONTROL CIRCUIT ......................................................................................................... 20
BUZZER OUTPUT CONTROL CIRCUIT ....................................................................................................... 20
SERIAL INTERFACES ..................................................................................................................................... 21
6.
INTERRUPT FUNCTIONS AND TEST FUNCTIONS .......................................................................... 22
TEST FUNCTIONS .......................................................................................................................................... 25
RESET FUNCTION .................................................................................................................................. 26
10. INSTRUCTION SET ................................................................................................................................ 27
From the tool manuals of ST, it can be seen that technology piracy has strengthened technology confidentiality, reduced technology exchange, and reduced the driving force of technological development....
[align=center][size=5][b]Recommendation of excellent books on development (XVIII) --- Embedded systems - Hardware and software architecture [/b][/size][/align] [size=4]With the rapid development of el...
I only added these few sentences, opened serial port 0 PINSEL0=0x05; U1LCR=0x83; U0DLL=0x6C; U0LCR=0x03; Why is a character sent out as soon as it runs? What is the reason? How can I delete it?...
[i=s]This post was last edited by allenliu on 2017-4-10 01:54[/i] [b][size=3]Test environment[/size][/b] [b][size=3]Node[/size][/b] The remote node A is powered by a mobile power supply (the CR2032 ba...
There are several points below, which I would like to discuss with you. 1. I think point A in the figure can be disconnected, and these current limiting resistors can be removed without affecting the ...
Most recently, NASA's Perseverance rover landed in the Jezero Crater on Mars on February 18, 2021. According to NASA, the rover will "search for signs of ancient life and collect rock and regolith sam...
With the promotion of the construction of intelligent communities in the country, anti-theft systems have become essential equipment for intelligent communities. Especially in recent years, the urg...[Details]
Traditional broadcasting systems generally need to be operated manually at a fixed time, and can only realize one-way broadcasting with few functions. Traditional bell ringing equipment has a singl...[Details]
1. Introduction
RFID (radio frequency identification) is a non-contact automatic identification technology that emerged in the 1990s. It uses the characteristics of radio frequency signal prop...[Details]
1. Circuit composition
The whole circuit consists of two parts:
1. Power saving control circuit
As shown in the figure below. Including delay circuit and drive circuit.
(1) Delay ci...[Details]
This article discusses how to wake up a touch-sensitive device such as a tablet without touching the device, using basic gesture recognition and novel proximity sensors. The article discusses the p...[Details]
1. Introduction
With the growth of parking demand, the scale of parking lots is becoming larger and larger. A lot of research has been done on intelligent parking lots in China, but most of th...[Details]
Remote keyless entry (RKE) systems have become popular with users, with more than 80% of new cars in North America and more than 70% in Europe equipped with RKE systems. In addition to the obvious ...[Details]
Converged processors meet scalability requirements
In current embedded system design, solutions based on MCU, DSP, FPGA and ASIC account for more than 90% of the market share. These solutions ...[Details]
No matter which processor you are learning, the first thing you need to understand is the registers and working mode of the processor.
ARM has 37 registers, including 31 general registers and ...[Details]
There are three types of mobile TV: one is based on analog TV broadcasting network, another is based on mobile communication network, and the other is based on digital broadcasting network. The f...[Details]
Electronic systems are located at different points on the automotive power bus and therefore often need to operate under very stringent power requirements. These include load dump, cold crank, very lo...[Details]
Product series: PB-B-RS232/485 interface (hereinafter sometimes referred to as "interface") is a product in the PROFIBUS bus bridge series.
The main purpose of the bridge series ...[Details]
1. Introduction
Testing the temperature of steel billets before rolling is an important measure to ensure the quality of steel. Traditional manual testing is difficult to ensure product qu...[Details]
Toyohashi University of Technology demonstrated electric field coupled wireless power supply technology using life-size car tires and roads at the wireless technology exhibition "Wireless Technolog...[Details]
Capacitance Measurement
Used to verify that capacitors meet the manufacturer's specifications. For quality control, a group of capacitors may be placed in an environmental chamber and the cap...[Details]
Embedded System
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