Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF HTML

S3C4530A Datasheet(PDF) 27 Page - Samsung semiconductor

Part No. S3C4530A
Description  16/32-bit RISC microcontroller is a cost-effective, high-performance microcontroller
Download  432 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  SAMSUNG [Samsung semiconductor]
Homepage  http://www.samsung.com/Products/Semiconductor
Logo 

S3C4530A Datasheet(HTML) 27 Page - Samsung semiconductor

Zoom Inzoom in Zoom Outzoom out
 27 / 432 page
background image
S3C4530A
PROGRAMMER'S MODEL
2-1
2
PROGRAMMER
′′S MODEL
OVERVIEW
S3C4530A was developed using the advanced ARM7TDMI core designed by advanced RISC machines, Ltd.
Processor Operating States
From the programmer
′s point of view, the ARM7TDMI can be in one of two states:
— ARM state which executes 32-bit, word-aligned ARM instructions.
— THUMB state which operates with 16-bit, half-word-aligned THUMB instructions. In this state, the PC uses bit
1 to select between alternate half-words.
NOTE
Transition between these two states does not affect the processor mode or the contents of the registers.
SWITCHING STATE
Entering THUMB State
Entry into THUMB state can be achieved by executing a BX instruction with the state bit (bit 0) set in the operand
register.
Transition to THUMB state will also occur automatically on return from an exception (IRQ, FIQ, UNDEF, ABORT,
SWI etc.), if the exception was entered with the processor in THUMB state.
Entering ARM State
Entry into ARM state happens:
1.
On execution of the BX instruction with the state bit clear in the operand register.
2.
On the processor taking an exception (IRQ, FIQ, RESET, UNDEF, ABORT, SWI etc.). In this case, the PC is
placed in the exception mode
′s link register, and execution commences at the exception′s vector address.
MEMORY FORMATS
ARM7TDMI views memory as a linear collection of bytes numbered upwards from zero. Bytes 0 to 3 hold the first
stored word, bytes 4 to 7 the second and so on. ARM7TDMI can treat words in memory as being stored either in
Big-Endian or Little-Endian format.


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




Link URL




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

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   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