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参数资料
| 型号： | MC68HC08AS20CFN |
| 厂商： | MOTOROLA INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, MICROCONTROLLER, PQCC52 |
| 封装： | PLASTIC, LCC-52 |
| 文件页数： | 19/96页 |
| 文件大小： | 3243K |
| 代理商： | MC68HC08AS20CFN |
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3
MOTOROLA
3-4
MC68HC05E0
CPU CORE AND INSTRUCTION SET
3.2.1
Register/memory Instructions
Most of these instructions use two operands. The rst operand is either the accumulator or the
index register. The second operand is obtained from memory using one of the addressing modes.
The jump unconditional (JMP) and jump to subroutine (JSR) instructions have no register
operand. Refer to Table 3-2 for a complete list of register/memory instructions.
3.2.2
Branch instructions
These instructions cause the program to branch if a particular condition is met; otherwise, no
operation is performed. Branch instructions are two-byte instructions. Refer to Table 3-3.
3.2.3
Bit manipulation instructions
The MCU can set or clear any writable bit that resides in the rst 256 bytes of the memory space
(page 0). All port data and data direction registers, timer and serial interface registers,
control/status registers and a portion of the on-chip RAM reside in page 0. An additional feature
allows the software to test and branch on the state of any bit within these locations. The bit set, bit
clear, bit test and branch functions are all implemented with single instructions. For the test and
branch instructions, the value of the bit tested is also placed in the carry bit of the condition code
register. Refer to Table 3-4.
3.2.4
Read/modify/write instructions
These instructions read a memory location or a register, modify or test its contents, and write the
modied value back to memory or to the register. The test for negative or zero (TST) instruction is
an exception to this sequence of reading, modifying and writing, since it does not modify the value.
Refer to Table 3-5 for a complete list of read/modify/write instructions.
3.2.5
Control instructions
These instructions are register reference instructions and are used to control processor operation
during program execution. Refer to Table 3-6 for a complete list of control instructions.
3.2.6
Tables
Tables for all the instruction types listed above follow. In addition there is a complete alphabetical
listing of all the instructions (see Table 3-7), and an opcode map for the instruction set of the
M68HC05 MCU family (see Table 3-8).
26
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MC68HC08AZ0 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:Advance Information |
| MC68HC08AZ0CFU | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:Advance Information |
| MC68HC08AZ16 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC08AZ24 | 制造商:MOTOROLA 制造商全称:Motorola, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC08AZ32 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Advance Information |
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