ADI's ADuC7xxxx series of chips, the core is also ARM, learning to use for more than two years, to share with you something I feel useful, I hope to be helpful to beginners. The products of ADI are divided into two categories: ADuC7XXX and ADuC8XX. The ADuC7xxx series has an ARM7 32-bit Reduced Instruction Set Computer (RISC) MCU core, and the ADuC8XX family of products has an industry-standard 8052 MCU core. The ADuC7XXX series products include ADuC7019, ADuC702X/ADuC703X/ADuC712X/ADuC706X. They all have their own characteristics. The ADuC702X (including 7019) series is a more general-purpose single-chip microcomputer, and its core speed and storage space are the same, except that the number of GPIOs, integrated ADCs, DACs, etc. are different; the ADuC703X series integrates sophisticated battery monitoring. System, and the power supply range is very wide, from 3.5V to 18V, especially suitable for automotive electronics; ADuC712X series has up to 126kBytes of Flash space and integrated DDS module; ADuC706X series integrates two precisions up to 24 bit ADC, if you want to do high-precision data acquisition, and want to control costs, this is a good choice. For example, the ADuC7060/ADuC7061 are fully integrated 8 kSPS, 24-bit data acquisition systems that integrate high-performance multi-channel sigma-delta analog-to-digital converters (ADCs) on a single chip, 16-bit/32-bit ARM7TDMI® MCUs and Flash/ EE memory. The ADC includes a 5-channel main ADC and a maximum of 8-channel auxiliary ADCs that operate in single-ended or differential input mode. A single-channel buffered voltage output DAC is provided on-chip and can be programmed to set the DAC output range to one of two voltage ranges. Useful in many industrial automation and process control; intelligent precision inspection systems. Let me talk about a few problems that beginners often encounter! 1 The four external interrupts of the ADUC702X series are high-level triggers. How can I achieve edge triggering? At first, this problem really plagued me for a while and then solved it. The edge trigger function can be implemented by using the PLA integrated in the ADUC702X series of microcontrollers. It can be configured as a rising edge trigger, a falling edge trigger or a simultaneous trigger. However, it should be noted that the corresponding external signal should be connected to the input pin of any PLA unit. If the hardware has been designed to be connected to the external interrupt pin, the edge trigger function cannot be implemented. 2 ADuC702X series MCU has two UART serial ports. Which UART can be used to download the program after power-on? P1.0 (SIN) and P1.1 (SOUT), P0.7 (SIN) and P2.0 can be configured as 2 UARTs, but programs can only be downloaded with P1.0 and P1.1. This is the case when the chip is designed, so it can only be used like this. If you want to use the serial port to communicate and want to download the program, you can only use P1.0 (SIN) and P1.1 (SOUT). Remember! 3 What is the role of the internal temperature sensor of the ADUC702X series MCU? The ADUC702XX series has a built-in temperature sensor. Its main function is to monitor the temperature of the chip itself and not to monitor the ambient temperature. At 25 ° C, the sensor usually has a typical output that can be calibrated first to ensure accuracy. The sensor output is inversely proportional to temperature with an error of ±3 ° C. 4 What software is used for debugging? With both Keil and IAR, I personally feel that the software on the CD provided by ADI has a code limit. It is best to find a cracked version on the Internet. 5 What emulator is used for debugging? This problem is a bit of a hassle. Individuals strongly recommend using the RDI provided by Analog Devices, which is mIDAS-Link or IAR's JLINK, but both simulators are more expensive.
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