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參數資料
| 型號： | HT86768 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Voice Synthesizer 8-Bit MCU |
| 中文描述： | 語音合成器8位微控制器 |
| 文件頁數： | 17/39頁 |
| 文件大小： | 368K |
| 代理商： | HT86768 |
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HT86XXX
Rev. 1.70
17
May 6, 2004
Functional Description
Execution Flow
The system clock for the HT86XXX series is derived
from either a crystal or an RC oscillator. It is internally di-
vided into four non-overlapping clocks. One instruction
cycle consists of four system 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 instruc-
tion to effectively execute within one cycle. If an instruc-
tion changes the program counter, two cycles are
required to complete the instruction.
Program Counter
PC
The 13-bit program counter (PC) controls the sequence
in which the instructions stored in program ROM are ex-
ecuted.
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
Mode
Program Counter
*12
*11
*10
*9
*8
*7
*6
*5
*4
*3
*2
*1
*0
Initial Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
External or Serial Input Interrupt
0
0
0
0
0
0
0
0
0
0
1
0
0
Timer/EventCounter0Overflow
0
0
0
0
0
0
0
0
0
1
0
0
0
Timer/EventCounter1Overflow
0
0
0
0
0
0
0
0
0
1
1
0
0
Timer Counter 2 Overflow
0
0
0
0
0
0
0
0
1
0
0
0
0
Timer Counter 3 Overflow
0
0
0
0
0
0
0
0
1
0
1
0
0
Skip
PC+2
Loading PCL
*12
*11
*10
*9
*8
@7
@6
@5
@4
@3
@2
@1
@0
Jump, Call Branch
#12
#11
#10
#9
#8
#7
#6
#5
#4
#3
#2
#1
#0
Return from Subroutine
S12
S11
S10
S9
S8
S7
S6
S5
S4
S3
S2
S1
S0
Program Counter
Note: *12~*0: Program counter bits
S12~S0: Stack register bits
#12~#0: Instruction code bits
@7~@0: PCL bits
0
*
0
*
0
*
<
$ '
' 7
8
@
'
' 7
9 8
<
$ '
' 7
A
8
@
'
' 7
8
<
$ '
' 7
A
8
@
'
' 7
A
8
A
A
"
'
-
>
' 7
'
- " 8
0
*
-
$
-
>
Execution Flow
相關PDF資料 |
PDF描述 |
|---|---|
| HT86072 | Voice Synthesizer 8-Bit MCU |
| HT86144 | Voice Synthesizer 8-Bit MCU |
| HT86192 | Voice Synthesizer 8-Bit MCU |
| HT86384 | Voice Synthesizer 8-Bit MCU |
| HT86576 | Voice Synthesizer 8-Bit MCU |
相關代理商/技術參數 |
參數描述 |
|---|---|
| HT86A36 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:A/D Type Voice 8-Bit MCU |
| HT86A72 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:A/D Type Voice 8-Bit MCU |
| HT86AR72 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:A/D Type Voice 8-Bit MCU |
| HT86ARxx | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:A/D Type Voice 8-Bit MCU |
| HT86AXX | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:A/D Type Voice 8-Bit MCU |
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