Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

HT56R22 Datasheet(PDF) 17 Page - Holtek Semiconductor Inc

Part # HT56R22
Description  TinyPowerTM A/D Type 8-Bit OTP MCU with DAC
Download  127 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT56R22 Datasheet(HTML) 17 Page - Holtek Semiconductor Inc

Back Button HT56R22_14 Datasheet HTML 13Page - Holtek Semiconductor Inc HT56R22_14 Datasheet HTML 14Page - Holtek Semiconductor Inc HT56R22_14 Datasheet HTML 15Page - Holtek Semiconductor Inc HT56R22_14 Datasheet HTML 16Page - Holtek Semiconductor Inc HT56R22_14 Datasheet HTML 17Page - Holtek Semiconductor Inc HT56R22_14 Datasheet HTML 18Page - Holtek Semiconductor Inc HT56R22_14 Datasheet HTML 19Page - Holtek Semiconductor Inc HT56R22_14 Datasheet HTML 20Page - Holtek Semiconductor Inc HT56R22_14 Datasheet HTML 21Page - Holtek Semiconductor Inc Next Button
Zoom Inzoom in Zoom Outzoom out
 17 / 127 page
background image
HT56R22/HT56R23/HT56R24/HT56R25/HT56R26
Rev. 1.30
17
December 26, 2014
System Architecture
A key factor in the high-performance features of the
Holtek range of microcontrollers is attributed to the inter-
nal system architecture. The range of devices take ad-
vantage of the usual features found within RISC
microcontrollers providing increased speed of operation
and enhanced performance. The pipelining scheme is
implemented in such a way that instruction fetching and
instruction execution are overlapped, hence instructions
are effectively executed in one cycle, with the exception
of branch or call instructions. An 8-bit wide ALU is used
in practically all operations of the instruction set. It car-
ries out arithmetic operations, logic operations, rotation,
increment, decrement, branch decisions, etc. The inter-
nal data path is simplified by moving data through the
Accumulator and the ALU. Certain internal registers are
implemented in the Data Memory and can be directly or
indirectly addressed. The simple addressing methods of
these registers along with additional architectural fea-
tures ensure that a minimum of external components is
required to provide a functional I/O and A/D control sys-
tem with maximum reliability and flexibility.
Clocking and Pipelining
The main system clock, derived from either a Crys-
tal/Resonator or RC oscillator is subdivided into four in-
ternally generated non-overlapping clocks, T1~T4. The
Program Counter is incremented at the beginning of the
T1 clock during which time a new instruction is fetched.
The remaining T2~T4 clocks carry out the decoding and
execution functions. In this way, one T1~T4 clock cycle
forms one instruction cycle. Although the fetching and
execution of instructions takes place in consecutive in-
struction cycles, the pipelining structure of the
microcontroller ensures that instructions are effectively
executed in one instruction cycle. The exception to this
are instructions where the contents of the Program
Counter are changed, such as subroutine calls or
jumps, in which case the instruction will take one more
instruction cycle to execute.
For instructions involving branches, such as jump or call
instructions, two instruction cycles are required to com-
plete instruction execution. An extra cycle is required as
the program takes one cycle to first obtain the actual
jump or call address and then another cycle to actually
execute the branch. The requirement for this extra cycle
should be taken into account by programmers in timing
sensitive applications.
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
O s c i l l a t o r C l o c k
( S y s t e m C l o c k )
P h a s e C l o c k T 1
P r o g r a m C o u n t e r
P h a s e C l o c k T 2
P h a s e C l o c k T 3
P h a s e C l o c k T 4
P i p e l i n i n g
System Clocking and Pipelining
F e t c h I n s t . 1
E x e c u t e I n s t . 1
F e t c h I n s t . 2
F l u s h P i p e l i n e
1
2
3
4
5
6
D E L A Y :
M O V A , [ 1 2 H ]
C A L L D E L A Y
C P L [ 1 2 H ]
:
:
N O P
E x e c u t e I n s t . 2
F e t c h I n s t . 3
F e t c h I n s t . 6
E x e c u t e I n s t . 6
F e t c h I n s t . 7
Instruction Fetching


Similar Part No. - HT56R22_14

ManufacturerPart #DatasheetDescription
logo
Holtek Semiconductor In...
HT56R22 HOLTEK-HT56R22_12 Datasheet
824Kb / 134P
   TinyPowerTM A/D Type 8-Bit OTP MCU with DAC
More results

Similar Description - HT56R22_14

ManufacturerPart #DatasheetDescription
logo
Holtek Semiconductor In...
HT56R22 HOLTEK-HT56R22 Datasheet
739Kb / 131P
   TinyPowerTM A/D Type 8-Bit OTP MCU with DAC
HT56R22 HOLTEK-HT56R22_12 Datasheet
824Kb / 134P
   TinyPowerTM A/D Type 8-Bit OTP MCU with DAC
HT56R66 HOLTEK-HT56R66_12 Datasheet
745Kb / 104P
   TinyPowerTM A/D Type with LCD 8-Bit OTP MCU
HT56R62 HOLTEK-HT56R62_12 Datasheet
786Kb / 108P
   TinyPowerTM A/D Type with LCD 8-Bit OTP MCU
HT56R62 HOLTEK-HT56R62_13 Datasheet
5Mb / 145P
   TinyPowerTM A/D Type with LCD 8-Bit OTP MCU
HT56R64 HOLTEK-HT56R64_12 Datasheet
674Kb / 90P
   TinyPowerTM A/D Type with LCD 8-Bit OTP MCU
HT56R67 HOLTEK-HT56R67_10 Datasheet
696Kb / 104P
   TinyPowerTM A/D Type with LCD 8-Bit MCU
HT56R67 HOLTEK-HT56R67_12 Datasheet
758Kb / 104P
   TinyPowerTM A/D Type with LCD 8-Bit MCU
HT45R37 HOLTEK-HT45R37_11 Datasheet
672Kb / 100P
   TinyPowerTM C/R-F Type 8-Bit OTP MCU
HT45R37 HOLTEK-HT45R37 Datasheet
614Kb / 99P
   TinyPowerTM C/R-F Type 8-Bit OTP 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 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
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