Single chip 4KB-piece program memory and 256B-piece data store

"Single chip microcomputer memory structure 1、 4KB on-chip program memory (on-chip ROM): 0000H ~ 0fffh 1、0000H~0002H： After the system is reset, the PC is 0000H, and the single chip microcomputer starts to execute the program from 0000H. If the program does not start from 0000H, an unconditional transfer instruction should be stored in these three units to let the system skip this area and directly execute the program formulated by the user. 2、0003H~0032H： It is evenly divided into 6 segments and can only store the interrupt service program. Generally, each segment has only 8 address units and cannot store the complete interrupt service program. Therefore, an unconditional transfer instruction is generally stored in the address area of the interrupt response, pointing to the space in the program memory where the interrupt service program is really stored. 3、0033H~0FFFH： Real program storage. 2、 256b on-chip data memory (on-chip RAM): 00h ~ FFH 1. Low 128B on-chip RAM 00h ~ 1fh: 4 groups of working registers, R0 ~ R7 20h ~ 2fH: bit addressing area. In addition to reading and writing as general ram, this area can also perform bit operations such as setting "1", clearing "0", negation, transfer, transmission and logic. 30h ~ 7FH: byte addressing area, general ram used by users, and stack can be opened in this area. 2. High 128B on-chip RAM 80h ~ FFH: special function register (SFR) area, read the full text and technical area 4KB on-chip program memory and 256b on-chip data memory of single chip microcomputer Realization of Modbus RTU communication based on PC and MCU Analysis of arithmetic operation instructions of MCS-51 Single Chip Microcomputer Test design of 12864 LCD module display by MSP430 Single Chip Microcomputer How to use STM32 MCU to send and receive DMA at the same time, and download enthusiast app Create an electronic circle of your contacts Pay attention to wechat of electronic enthusiasts Interesting and informative information and technology dry goods Focus on enthusiast class Lock in the latest course activities and technology live broadcast Electronic enthusiast observation Front line report, in-depth observation, latest information, collection 0 collections Share:, comment Lin Chaowen PCB Design: pads tutorial, pads video tutorial, Zheng Zhenyu teacher: Altium designer tutorial, Altium designer video tutorial, Zhang Fei actual combat electronic video tutorial, Zhu Youpeng teacher: Hisilicon hi3518e tutorial, hi3518e video tutorial, Li Zeng teacher: signal integrity tutorial, high-speed circuit simulation tutorial, Huawei Hongmeng system tutorial, harmonyos video tutorial, saisheng: EMC design tutorial, EMC video tutorial Mr. Du Yang: STM32 tutorial, STM32 video tutorial, Tang zuolin: basic C language tutorial, basic C language video tutorial, Zhang Fei: Buck Power tutorial, buck power video tutorial, punctual atom: FPGA tutorial, FPGA video tutorial, Mr. Wei Dongshan: embedded tutorial, Embedded video tutorial Zhang Xianfeng: C language basic video tutorial Xu Xiaogang: Modbus communication video tutorial Wang Zhentao: NB IOT development video tutorial mill: FPGA tutorial, zynq video tutorial c language video tutorial linux driver development video tutorial Zhu Youpeng: u-boot source code analysis video tutorial harmonyos,  Press and hold the slider and drag to the far right Learn about new features Published, relevant recommendations Realization of Modbus RTU communication based on PC and MCU Recently, I studied Modbus communication and realized some functions of Modbus Protocol on STC12C5A60S2 single chip microcomputer Published at 10:47, December 8, 2018 • 0 readings It is expected that the drop in DRAM contract price will continue to expand in the first quarter of 2019 According to the latest report of dramexchange, DRAM prices officially reversed downward in the fourth quarter of this year Published at 16:35, December 7, 2018 • 40 readings How to realize PLC logic on single chip microcomputer A friend wants to customize a water purifier controller. 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