Os motores de busca de Datasheet de Componentes eletrônicos
  Portuguese  ▼
ALLDATASHEETPT.COM

X  

HT82M9BE Folha de dados(PDF) 5 Page - Holtek Semiconductor Inc

Nome de Peças HT82M9BE
Descrição Electrónicos  USB Mouse Encoder 8-Bit MCU
Download  44 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrônico  HOLTEK [Holtek Semiconductor Inc]
Página de início  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT82M9BE Folha de dados(HTML) 5 Page - Holtek Semiconductor Inc

  HT82M9BE_08 Datasheet HTML 1Page - Holtek Semiconductor Inc HT82M9BE_08 Datasheet HTML 2Page - Holtek Semiconductor Inc HT82M9BE_08 Datasheet HTML 3Page - Holtek Semiconductor Inc HT82M9BE_08 Datasheet HTML 4Page - Holtek Semiconductor Inc HT82M9BE_08 Datasheet HTML 5Page - Holtek Semiconductor Inc HT82M9BE_08 Datasheet HTML 6Page - Holtek Semiconductor Inc HT82M9BE_08 Datasheet HTML 7Page - Holtek Semiconductor Inc HT82M9BE_08 Datasheet HTML 8Page - Holtek Semiconductor Inc HT82M9BE_08 Datasheet HTML 9Page - Holtek Semiconductor Inc Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 44 page
background image
HT82M9BE/HT82M9BA
Rev. 1.80
5
December 22, 2008
Functional Description
Execution Flow
The system clock for the microcontroller is derived from
either 6MHz or 12MHz crystal oscillator, which used a
frequency that is determined by the SCLKSEL bit of the
SCC Register. The default system frequency is 12MHz.
The system clock is internally divided 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 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
changes the program counter, two cycles are required to
complete the instruction.
Program Counter
- PC
The program counter (PC) controls the sequence in
which the instructions stored in the program ROM are
executed and its contents specify a full range of pro-
gram memory.
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 to the PCL register, performing a sub-
routine call or return from subroutine, initial reset,
internal interrupt, external interrupt or return from inter-
rupts, the PC manipulates the program transfer by load-
ing the address corresponding to each instruction.
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 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 the current program ROM page.
When a control transfer takes place, an additional
dummy cycle is required.
T 1
T 2
T 3
T 4
T 1
T 2
T 3
T 4
T 1
T 2
T 3
T 4
F e t c h I N S T ( P C )
E x e c u t e I N S T ( P C - 1 )
F e t c h I N S T ( P C + 1 )
E x e c u t e I N S T ( P C )
F e t c h I N S T ( P C + 2 )
E x e c u t e I N S T ( P C + 1 )
P C
P C + 1
P C + 2
S y s t e m C l o c k
O S C 2 ( R C o n l y )
P C
Execution Flow
Mode
Program Counter
*12
*11
*10
*9
*8
*7
*6
*5
*4
*3
*2
*1
*0
Initial Reset
0000000000000
USB Interrupt
0000000000100
Timer/Event Counter 0 Overflow
0000000001000
Timer/Event Counter 1 Overflow
0000000001100
Skip
Program Counter+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


Nº de peça semelhante - HT82M9BE_08

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Holtek Semiconductor In...
HT82M9BEE HOLTEK-HT82M9BEE Datasheet
323Kb / 47P
   USB Mouse Encoder 8-Bit MCU with EEPROM
HT82M9BEE HOLTEK-HT82M9BEE_08 Datasheet
305Kb / 44P
   USB Mouse Encoder 8-Bit MCU with EEPROM
More results

Descrição semelhante - HT82M9BE_08

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Holtek Semiconductor In...
HT82M99EE HOLTEK-HT82M99EE Datasheet
367Kb / 47P
   USB Mouse Encoder 8-Bit MCU
HT82M99E HOLTEK-HT82M99E_11 Datasheet
300Kb / 50P
   USB Mouse Encoder 8-Bit MCU
HT82M99EE HOLTEK-HT82M99EE_08 Datasheet
326Kb / 44P
   USB Mouse Encoder 8-Bit MCU
HT82M9AE HOLTEK-HT82M9AE_09 Datasheet
291Kb / 46P
   USB Mouse Encoder 8-Bit MCU
HT82M99E HOLTEK-HT82M99E Datasheet
281Kb / 45P
   USB Mouse Encoder 8-Bit OTP MCU
HT82M9BEE HOLTEK-HT82M9BEE_08 Datasheet
305Kb / 44P
   USB Mouse Encoder 8-Bit MCU with EEPROM
HT82M9AEE HOLTEK-HT82M9AEE Datasheet
315Kb / 48P
   USB Mouse Encoder 8-Bit MCU with EEPROM
HT82M9BEE HOLTEK-HT82M9BEE Datasheet
323Kb / 47P
   USB Mouse Encoder 8-Bit MCU with EEPROM
HT82J97E HOLTEK-HT82J97E_08 Datasheet
305Kb / 44P
   USB Joystick Encoder 8-Bit MCU
HT82K95EE HOLTEK-HT82K95EE Datasheet
327Kb / 45P
   USB Multimedia Keyboard Encoder 8-Bit MCU
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44


Folha de dados Download

Go To PDF Page


Ligação URL




Privacy Policy
ALLDATASHEETPT.COM
ALLDATASHEET é útil para você?  [ DONATE ] 

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Privacy Policy   |   roca de Link   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com