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XC68HC912D60FU8 参数 Datasheet PDF下载

XC68HC912D60FU8图片预览
型号: XC68HC912D60FU8
PDF下载: 下载PDF文件 查看货源
内容描述: 超前信息 - 冯4.0 [Advance Information - Rev 4.0]
分类和应用: 微控制器和处理器外围集成电路时钟
文件页数/大小: 432 页 / 2948 K
品牌: MOTOROLA [ MOTOROLA ]
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Freescale Semiconductor, Inc.  
Advance Information — 68HC(9)12D60  
Section 2. Central Processing Unit  
2.1 Contents  
2.2  
2.3  
2.4  
2.5  
2.6  
2.7  
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31  
Programming Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31  
Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33  
Addressing Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33  
Indexed Addressing Modes . . . . . . . . . . . . . . . . . . . . . . . . . . .35  
Opcodes and Operands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36  
2.2 Introduction  
The CPU12 is a high-speed, 16-bit processing unit. It has full 16-bit data  
paths and wider internal registers (up to 20 bits) for high-speed extended  
math instructions. The instruction set is a proper superset of the  
M68HC11instruction set. The CPU12 allows instructions with odd byte  
counts, including many single-byte instructions. This provides efficient  
use of ROM space. An instruction queue buffers program information so  
the CPU always has immediate access to at least three bytes of machine  
code at the start of every instruction. The CPU12 also offers an  
extensive set of indexed addressing capabilities.  
2.3 Programming Model  
CPU12 registers are an integral part of the CPU and are not addressed  
as if they were memory locations.  
68HC(9)12D60 — Rev 4.0  
MOTOROLA  
Advance Information  
31  
Central Processing Unit  
For More Information On This Product,  
Go to: www.freescale.com