Motore di ricerca datesheet componenti elettronici
  Italian  ▼
ALLDATASHEETIT.COM

X  

Preview PDF HTML

UPD17P136ACT Scheda tecnica(PDF) 64 Page - NEC

Il numero della parte UPD17P136ACT
Spiegazioni elettronici  4-BIT SINGLE-CHIP MICROCONTROLLER
PDF  292 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Produttore elettronici  NEC [NEC]
Homepage  http://www.nec.com/
Logo NEC - NEC

UPD17P136ACT Scheda tecnica(HTML) 64 Page - NEC

Back Button UPD17P136ACT Datasheet HTML 60Page - NEC UPD17P136ACT Datasheet HTML 61Page - NEC UPD17P136ACT Datasheet HTML 62Page - NEC UPD17P136ACT Datasheet HTML 63Page - NEC UPD17P136ACT Datasheet HTML 64Page - NEC UPD17P136ACT Datasheet HTML 65Page - NEC UPD17P136ACT Datasheet HTML 66Page - NEC UPD17P136ACT Datasheet HTML 67Page - NEC UPD17P136ACT Datasheet HTML 68Page - NEC Next Button
Zoom Inzoom in Zoom Outzoom out
 64 / 292 page
background image
CHAPTER 7 SYSTEM REGISTER (SYSREG)
45
7.3 WINDOW REGISTER (WR)
7.3.1 Window Register Configuration
Figure 7-5 shows the configuration of the window register.
As shown in Figure 7-5, the window register (WR) consists of four bits allocated at address 78H of the system
register. The contents of the window register is undefined after reset. However, when RESET is used to release the
system from HALT or STOP mode, the previous state is maintained.
Figure 7-5. Window Register Configuration
7.3.2 Window Register Functions
The window register is used to transfer data to and from the register file (RF).
Data is transferred to and from the register file using the dedicated instructions “PEEK WR, rf” and “POKE rf, WR”.
(1) PEEK WR, rf
As shown in Figure 7-6, the “PEEK WR, rf” instruction is used to transfer the contents of the register file
specified by rf to the window register.
(2) POKE rf, WR
As shown in Figure 7-6, the “POKE rf, WR” instruction is used to transfer the contents of the window register
to the file specified by rf.
Figure 7-6. Example of Window Register Operation
b3
b2
b1
b0
Bit
Symbol
Name
Address
Data
Initial value when reset
78H
Window register
WR
Undefined
0123456789
A
B
C
D
E
F
0
1
2
3
4
5
6
7
System register
Column address
POKE instruction
PEEK instruction
WR
Control register
Register file
Data memory



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


Scheda tecnica Scarica

Go To PDF Page


Link URL



Lei ha avuto il aiuto da alldatasheet?  [ DONATE ] 

Di alldatasheet   |   Richest di pubblicita   |   contatti   |   Privacy Policy   |   Collegamento alla scheda tecnica    |   scambio Link   |   Ricerca produttore
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