Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

Preview PDF HTML

UPD17P133CS Datasheet(PDF) 97 Page - NEC

Part # UPD17P133CS
Description  4-BIT SINGLE-CHIP MICROCONTROLLER
PDF  289 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD17P133CS Datasheet(HTML) 97 Page - NEC

Back Button UPD17P133CS Datasheet HTML 93Page - NEC UPD17P133CS Datasheet HTML 94Page - NEC UPD17P133CS Datasheet HTML 95Page - NEC UPD17P133CS Datasheet HTML 96Page - NEC UPD17P133CS Datasheet HTML 97Page - NEC UPD17P133CS Datasheet HTML 98Page - NEC UPD17P133CS Datasheet HTML 99Page - NEC UPD17P133CS Datasheet HTML 100Page - NEC UPD17P133CS Datasheet HTML 101Page - NEC Next Button
Zoom Inzoom in Zoom Outzoom out
 97 / 289 page
background image
CHAPTER 10
DATA BUFFER (DBF)
82
10.2.2 Data Transfer with Peripheral Hardware
Data can be transferred between the data buffer and peripheral hardware in 8- or 16-bit units. Instruction cycle
for a single PUT or GET instruction is the same regardless of whether eight or sixteen bits are being transferred.
Example 1. PUT instruction (when the effective bits in peripheral hardware are the 8 bits from 7 to 0)
DBF0
b0
b1
b2
b3
Data in peripheral
hardware
b4
b5
b6
b7
DBF2
Don't care
DBF3
Don't care
b0
Effective bits
b7
PUT
DBF1
Data buffer
When only eight bits of data are being written from the data buffer, the upper eight bits of the data
buffer (DBF3, DBF2) are irrelevant.
Example 2. GET instruction (when the effective bits in peripheral hardware are the 8 bits from 7 to 0)
When only eight bits of data are being read into the data buffer, the values in the upper eight bits
of the data buffer (DBF3, DBF2) remain unchanged.
DBF0
b0
b1
b2
b3
Data in peripheral
hardware
b4
b5
b6
b7
DBF2
Retained
DBF3
Retained
b0
Effective bits
b7
GET
DBF1
Data buffer



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