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| 型號： | EM78P468NBQ |
| 廠商： | ELAN Microelctronics Corp . |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數(shù)： | 14/82頁 |
| 文件大小： | 1491K |
| 代理商： | EM78P468NBQ |
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EM78P468N
8-BIT Microcontroller
4.1 Op
10
Product Specification (V1.2) 03.15.2005
(This specification is subject to change without further notice)
4.1
ess: 00h)
he data pointed by the RAM Select
4.1
Increases by an external signal edge applied to TCC, or by the instruction cycle clock.
Written and read by the program as any other register.
4.1.3
R2/PC (Program Counter)
(Address: 02h)
* The structure is depicted in Fig. 3
* Generates 4K
×
13 on-chip ROM addresses to the relative programming instruction
codes.
* "JMP" instruction allows direct loading of the low 10 program counter bits.
* "CALL" instruction loads the low 10 bits of the PC and PC+1, then push it into the stack.
* "RET'' ("RETL k", "RETI") instruction loads the program counter with the contents at the
top of stack.
* "MOV R2, A"
contents of the ninth and tenth bits do not change.
the A register to the PC. The
* "ADD R2, A" allows a relative address be added to the current PC.
* The most significa
the Status register (R3) upon execution of a "JMP'' or "CALL'' instruction.
t of bits PS0~PS1 in
erational Registers
.1
R0/IAR (Indirect Addressing Register)
(Addr
R0 is not a physically implemented register. It is used as indirect addressing pointer. Any
instruction using R0 as register actually accesses t
Register (R4).
.2
R1/TCC (Time Clock Counter)
(Address: 01h)
allows the loading of an address from
nt bit (A10~A11) will be loaded with the conten
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