データシートサーチシステム
  Japanese  ▼
ALLDATASHEET.JP

X  

Preview PDF HTML

ST63126 データシート(PDF) 13 Page - STMicroelectronics

部品番号 ST63126
部品情報  8-BIT HCMOS MCUs FOR TV FREQUENCY & VOLTAGE SYNTHESIS WITH OSD
PDF  86 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST63126 データシート(HTML) 13 Page - STMicroelectronics

Back Button ST63126 Datasheet HTML 9Page - STMicroelectronics ST63126 Datasheet HTML 10Page - STMicroelectronics ST63126 Datasheet HTML 11Page - STMicroelectronics ST63126 Datasheet HTML 12Page - STMicroelectronics ST63126 Datasheet HTML 13Page - STMicroelectronics ST63126 Datasheet HTML 14Page - STMicroelectronics ST63126 Datasheet HTML 15Page - STMicroelectronics ST63126 Datasheet HTML 16Page - STMicroelectronics ST63126 Datasheet HTML 17Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 13 / 86 page
background image
ST631xxx CORE (Continued)
Stack
The ST631xx Core includes true LIFO hardware
stack that eliminates the need for a stack pointer.
The stack consists of six separate 12-bit RAM loca-
tions that do not belong to the data space RAM
area. When a subroutine call (or interrupt request)
occurs, the contents of each level is shifted into the
next level while the content of the PC is shifted into
the first level (the value of the sixth level will be
lost). When subroutine or interrupt return occurs
(RET or RETI instructions), the first level register is
shifted back into the PC and the value of each level
is shifted back into the previous level. These two
operating modes are described in Figure 6. Since
the accumulator, as all other data space registers,
is not stored in this stack the handling of this regis-
ters shall be performed inside the subroutine. The
stack pointer will remain in its deepest position, if
more than 6 calls or interrupts are executed, so
that the last return address will be lost. It will also
remain in its highest position if the stack is empty
and a RET or RETI is executed. In this case the
next instruction will be executed.
WHEN CALL
OR
INTERRUPT REQUEST
OCCURS
STACK LEVEL 1
STACK LEVEL 1
STACK LEVEL 1
STACK LEVEL 1
STACK LEVEL 1
STACK LEVEL 1
PROGRAM COUNTER
RET OR RETI
WHEN
OCCURS
VA000424
Figure 6. Stack Operation
®
ST63140,142,126,156
9/82



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


データシート ダウンロード

Go To PDF Page


リンク URL



ALLDATASHEETはお客様のビジネスに役立ちますか？  [ DONATE ] 

Alldatasheetは   |   広告   |   お問い合わせ   |   プライバシーポリシー   |   データシートへのリンク    |   リンク交換   |   メーカーリスト
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