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參數(shù)資料
| 型號： | MB89951PFM |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 5 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | 0.65 MM PITCH, QFP-64 |
| 文件頁數(shù)： | 24/110頁 |
| 文件大?。?/td> | 619K |
| 代理商： | MB89951PFM |
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HARDWARE CONFIGURATION
2– 5
2.1.2 Arrangement of 16-bit Data in Memory Space
When the MB89950 series of microcontrollers handle 16-bit data, the data
written at the lower address is treated as the upper 8-bit data and that written
at the next address is treated as the lower 8-bit data as shown in Fig. 2.2.
Fig. 2.2 Arrangement of 16 bit Data in Memory Space
This is the same when 16 bits are specified by the operand during execution
of an instruction. Bits closer to the OP code are treated as the upper byte
and those next to it are treated as the lower byte. This is also the same
when the memory address or 16-bit immediate data is specified by the
operand.
Fig. 2.3 Arrangement of 16 bit Data during Execution of Instruction
Data saved in the stack by an interrupt is also treated in the same manner.
CPU
ABCFH
ABCEH
ABCDH
ABCCH
1234H
A
MOVW ABCDH , A
ABCFH
ABCEH
ABCDH
ABCCH
1234H
A
34H
12H
Memory
After execution
Before execution
Memory
[Example]
MOV A, 5678H
; Extended address
MOV A, #1234H
; 16-bit immediate data
Assemble
XXXXH XX XX
XXXXH 60 56 78
; Extended address
XXXXH E4 12 34
; 16-bit immediate data
XXXXH XX
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MB89953 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89953PFM | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB8995X | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89960 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
| MB89965 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:8-bit Proprietary Microcontroller |
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