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參數(shù)資料
| 型號： | HT47C10L |
| 英文描述： | 8-Bit R-F Type Low Voltage Mask MCU |
| 中文描述： | 8位低電壓RF型微控制器面具 |
| 文件頁數(shù)： | 6/38頁 |
| 文件大?。?/td> | 287K |
| 代理商： | HT47C10L |
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HT47C10L
Rev. 1.10
6
October 2, 2002
Execution flow
Functional Description
Execution flow
The HT47C10L system clock is derived from an about
32kHz built-in RC oscillator. The system clock is inter-
nally divided into four non-overlapping clocks (T1, T2,
T3 and T4). One instruction cycle consists of four sys-
tem clock cycles.
Instruction fetching and execution are pipelined in such
a way that a fetch takes one instruction cycle while de-
coding and execution takes the next instruction cycle.
However, the pipelining scheme causes each instruction
to effectively execute in one cycle. If an instruction
changes the program counter, two cycles are required to
complete the instruction.
Program counter
PC
The 10-bit program counter (PC) controls the sequence
in which the instructions stored in the program ROM are
executed and its contents specify a maximum of 1024
addresses.
After accessing a program memory word to fetch an in-
struction code, the contents of the program counter are
incremented by one. The program counter then points
to the memory word containing the next instruction
code.
When executing a jump instruction, conditional skip ex-
ecution, loading PCL register, subroutine call, initial re-
set, internal interrupt, external interrupt or return from
subroutine, the PC manipulates the program transfer by
loading the address corresponding to each instruction.
The conditional skip is activated by instruction. Once
the condition is met, the next instruction, fetched during
the current instruction execution, is discarded and a
dummy cycle replaces it to get the proper instruction.
Otherwise proceed with the next instruction.
The lower byte of the program counter (PCL) is a read-
able and writeable register (06H). Moving data into the
PCL performs a short jump. The destination will be
within 256 locations.
When a control transfer takes place, an additional
dummy cycle is required.
Mode
Program Counter
*9
*8
*7
*6
*5
*4
*3
*2
*1
*0
Initial Reset
0
0
0
0
0
0
0
0
0
0
Timer/event Counter Interrupt
0
0
0
0
0
0
0
1
0
0
Time Base Interrupt
0
0
0
0
0
0
1
0
0
0
Skip
PC+2
Loading PCL
*9
*8
@7
@6
@5
@4
@3
@2
@1
@0
Jump, Call Branch
#9
#8
#7
#6
#5
#4
#3
#2
#1
#0
Return from Subroutine
S9
S8
S7
S6
S5
S4
S3
S2
S1
S0
Program counter
Note: *9~*0: Program counter bits
#9~#0: Instruction code bits
S9~S0: Stack register bits
@7~@0: PCL bits
相關PDF資料 |
PDF描述 |
|---|---|
| HT47C10L(44QFP) | Microcontroller |
| HT506 | HIGH TEMPERATURE ANALOG MULTIPLEXERS 16-CHANNEL SINGLE / 8-CHANNEL DUAL |
| HT506DB | HIGH TEMPERATURE ANALOG MULTIPLEXERS 16-CHANNEL SINGLE / 8-CHANNEL DUAL |
| HT506DC | HIGH TEMPERATURE ANALOG MULTIPLEXERS 16-CHANNEL SINGLE / 8-CHANNEL DUAL |
| HT507 | HIGH TEMPERATURE ANALOG MULTIPLEXERS 16-CHANNEL SINGLE / 8-CHANNEL DUAL |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| HT47C10L(44QFP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| HT47C20 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:8-Bit R-F Type Mask MCU |
| HT47C20_02 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:8-Bit R-F Type Mask MCU |
| HT47C20-1 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:R-F Type 8-Bit MCU |
| HT47C20-1_08 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:R-F Type 8-Bit MCU |
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