- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385403 > HT82A850R (Holtek Semiconductor Inc.) Audio MCU PDF資料下載
參數(shù)資料
| 型號： | HT82A850R |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Audio MCU |
| 中文描述： | 音頻控制器 |
| 文件頁數(shù)： | 6/41頁 |
| 文件大?。?/td> | 296K |
| 代理商： | HT82A850R |
第1頁第2頁第3頁第4頁第5頁當(dāng)前第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁
HT82A850R
Rev. 1.10
6
July 25, 2007
Functional Description
Execution Flow
Themicrocontrollersystemclockissourcedfromacrys-
tal oscillator. The system clock is internally divided into
four non-overlapping clocks. One instruction cycle con-
sists of four system clock cycles.
Instruction fetching and execution are pipelined in such
a way that a fetch takes an instruction cycle while de-
coding and execution takes the next instruction cycle.
However, the pipelining scheme causes each instruc-
tion to be effectively executed in a cycle. If an instruction
changestheprogramcounter,twocyclesarerequiredto
complete the instruction.
Program Counter
PC
The program counter, PC, controls the sequence in
whichtheinstructionsstoredintheprogrammemoryare
executed. Its contents specify the full program memory
range.
After accessing a program memory word to fetch an in-
struction code, the contents of the program counter are
incrementedbyone.Theprogramcounterthenpointsto
the memory word containing the next instruction code.
When executing a jump instruction, a conditional skip
execution, loading to the PCL register, performing a
subroutine call or returning from a subroutine, an initial
reset, an internal interrupt, external interrupt or return
from interrupts, the PC manipulates the program trans-
fer by loading the address corresponding to each in-
struction.
The conditional skip is activated by instructions. 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 the next instruction is executed.
The lower byte of the program counter, PCL, is a read-
able and writeable register. Moving data into the PCL
performs a short jump. The destination will be within the
current program memory page.
When a control transfer takes place, an additional
dummy cycle is required.
.
4
-
.
4
-
.
4
-
8
" %
% :
<
' @
%
% :
1 <
8
" %
% :
=
<
' @
%
% :
<
8
" %
% :
= . <
' @
%
% :
=
<
=
= .
%
&
A
. % :
%
& <
Execution Flow
Mode
Program Counter
*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
Reserved
0
0
0
0
0
0
0
0
0
1
0
0
Timer/EventCounter0Overflow
0
0
0
0
0
0
0
0
1
0
0
0
Timer/EventCounter1Overflow
0
0
0
0
0
0
0
0
1
1
0
0
Play Interrupt
0
0
0
0
0
0
0
1
0
0
0
0
Serial Interface Interrupt
0
0
0
0
0
0
0
1
0
1
0
0
Record Interrupt
0
0
0
0
0
0
0
1
1
0
0
0
Skip
Program Counter+2
Loading PCL
*11
*10
*9
*8
@7
@6
@5
@4
@3
@2
@1
@0
Jump, Call Branch
#11
#10
#9
#8
#7
#6
#5
#4
#3
#2
#1
#0
Return from Subroutine
S11
S10
S9
S8
S7
S6
S5
S4
S3
S2
S1
S0
Program Counter
Note: *11~*0: Program counter bits
S11~S0: Stack register bits
#11~#0: Instruction code bits
@7~@0: PCL bits
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HT82A851R | USB Audio MCU |
| HT82J30A | 16 Channel A/D MCU with SPI Interface |
| HT82J30R | 16 Channel A/D MCU with SPI Interface |
| HT82J927A | USB Gamepad |
| HT82J97E | USB Joystick Encoder 8-Bit OTP MCU |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HT82A851R | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:USB Audio MCU |
| HT82B40A | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:I/O MCU with USB Interface |
| HT82B40R | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:I/O MCU with USB Interface |
| HT82B40R_11 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:I/O MCU with USB Interface |
| HT82B42R | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:I/O MCU with USB Interface |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。