- 1、本文档共37页,可阅读全部内容。
- 2、有哪些信誉好的足球投注网站(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
- 5、该文档为VIP文档,如果想要下载,成为VIP会员后,下载免费。
- 6、成为VIP后,下载本文档将扣除1次下载权益。下载后,不支持退款、换文档。如有疑问请联系我们。
- 7、成为VIP后,您将拥有八大权益,权益包括:VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
- 8、VIP文档为合作方或网友上传,每下载1次, 网站将根据用户上传文档的质量评分、类型等,对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档
查看更多
PIC24H系列单片机体系结构及外设模块讲解 主讲人:胡洲 时 间:2011-7-14 Register Introduce (1) Register Introduce (2) Software stack pointer W14 Software Stack Frame Pointer A frame is a user-defined section of memory in the stack used by a single subroutine. W14 is a special working register because it can be used as a Stack Frame Pointer with the LNK (link) and ULNK (unlink) instructions. W14 can be used in a normal working register by instructions when it is not used as a Stack Frame Pointer. Stack Pointer Overflow The stack overflow check is not enabled until a word write to SPLIM occurs, after which time it can only be disabled by a device Reset. If the contents of W15 are greater than the contents of the SPLIM register by 2, and a CALL instruction is executed or an interrupt occurs, a stack error trap is generated. SR: CPU Status Register DC: MCU ALU Half Carry/Borrow bit IPL2:0: CPU Interrupt Priority Level Status bits N: MCU ALU Negative bit OV: MCU ALU Overflow bit Z: MCU ALU Zero bit C: MCU ALU Carry/Borrow bit CORCON: Core Control Register IPL3: CPU Interrupt Priority Level Status bit PSV: Program Space Visibility in Data Space Enable bit Note 1: User interrupts are disabled when IPL3 = 1. Data Memory(1) The size of the X data space is device specific. DMA RAM is not available on all devices. Near data memory can be accessed directly via file register instructions that encode a 13-bitaddress into the opcode. All data memory can be accessed indirectly via W registers or directly using the MOV instruction. Data Memory(2) Upper half of data memory map can be mapped into a segment of program memory space for Program Space Visibility (PSV). Data Alignment Program Memory Map(1) The address boundaries for user Flash program memory will depend on the device variant selected. Program Memory Map(2) Device Configuration Registers Instruction Fetch Example Using Table instructions(1) Using Table instructions(2) Program Space Visibility Program Space Visibility Example 1 Compiler Mana
您可能关注的文档
最近下载
- 学生公寓管理年终总结.pptx
- 信息学奥赛一本通·初赛真题解析 第1章:计算机基础知识.docx VIP
- 2023《浅析徐福记食品公司的财务状况》.docx VIP
- 中级java工程师面试题及答案.doc VIP
- java中级工程师面试题及答案.doc VIP
- 冰雪旅游服务规范 .pdf VIP
- DB22_T 3073-2019 旅行社冰雪旅游接待安全管理规范.docx VIP
- 导游在冰雪旅游中的安全要求与服务技巧.pptx VIP
- 三年(2022–2024)高考数学真题分类汇编(全国通用)专题05 平面解析几何(选择题、填空题)(解析版) .pdf VIP
- DB22_T3073-2019_旅行社冰雪旅游接待安全管理规范_吉林省.docx VIP
文档评论(0)