Electronic Components Datasheet Search
  English  ▼

X  

Preview PDF HTML

UPD17P136ACT Datasheet(PDF) 60 Page - NEC

Part # UPD17P136ACT
Description  4-BIT SINGLE-CHIP MICROCONTROLLER
PDF  292 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD17P136ACT Datasheet(HTML) 60 Page - NEC

Back Button UPD17P136ACT Datasheet HTML 56Page - NEC UPD17P136ACT Datasheet HTML 57Page - NEC UPD17P136ACT Datasheet HTML 58Page - NEC UPD17P136ACT Datasheet HTML 59Page - NEC 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 Next Button
Zoom Inzoom in Zoom Outzoom out
 60 / 292 page
background image
CHAPTER 7
SYSTEM REGISTER (SYSREG)
The system register (SYSREG), located in data memory, is used for direct control of the CPU.
7.1 SYSTEM REGISTER CONFIGURATION
Figure 7-1 shows the allocation address of the system register in data memory. As shown in Figure 7-1, the system
register is allocated in addresses 74H to 7FH of data memory, independently of the banks. This means that each
bank has the same system register at addresses 74H to 7FH.
Since the system register is allocated in data memory, it can be manipulated using any of the data memory
manipulating instructions. Therefore, it is also possible to put the system register in the general register.
Figure 7-1. Allocation of System Register in Data Memory
Figure 7-2 shows the configuration of the system register. As shown in Figure 7-2, the system register consists
of the following seven registers.
• Address register
(AR)
• Window register
(WR)
• Bank register
(BANK)
• Index register
(IX)
• Data memory row address pointer
(MP)
• General register pointer
(RP)
• Program status word
(PSWORD)
System register
BANK1
Unmounted
Port register
Port register
Data memory
BANK0
0
123456789
A
B
C
D
E
F
Column address
0
1
2
3
4
5
6
7
01
2
3
456789
A
B
C
D
E
F
41



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



Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link to Datasheet    |   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