전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

Preview PDF HTML

LPC47M14X 데이터시트(PDF) 121 Page - SMSC Corporation

부품명 LPC47M14X
상세설명  128 PIN ENGANCED SUPER I/O CONTROLLER WITH AN LPC INTERFACE AND USB HUB
PDF  205 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  SMSC [SMSC Corporation]
홈페이지  http://www.smsc.com
Logo SMSC - SMSC Corporation

LPC47M14X 데이터시트(HTML) 121 Page - SMSC Corporation

Back Button LPC47M14X Datasheet HTML 117Page - SMSC Corporation LPC47M14X Datasheet HTML 118Page - SMSC Corporation LPC47M14X Datasheet HTML 119Page - SMSC Corporation LPC47M14X Datasheet HTML 120Page - SMSC Corporation LPC47M14X Datasheet HTML 121Page - SMSC Corporation LPC47M14X Datasheet HTML 122Page - SMSC Corporation LPC47M14X Datasheet HTML 123Page - SMSC Corporation LPC47M14X Datasheet HTML 124Page - SMSC Corporation LPC47M14X Datasheet HTML 125Page - SMSC Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 121 / 205 page
background image
SMSC DS – LPC47M14X
Page 121
Rev. 03/19/2001
A representation of the logic for the fan tachometer implementation is shown below.
The following tables show examples of the desired functionality. Counts are based on 2 pulses per revolution
tachometer outputs with a default divisor of 2.
RPM
TIME PER
REVOLUTION
TERM 1 FOR “DIVIDE
BY 2” (DEFAULT) IN
DECIMAL
PRELOAD
COUNT =
(TERM 1) +
PRELOAD
COMMENTS
4400
13.64 ms
112 counts
32
144
Typical RPM
3080
19.48 ms
160 counts
32
192
70% RPM
2640
22.73 ms
186 counts
32
218
60% RPM
2204
27.22 ms
223 counts
32
255
(maximum count)
50% RPM
MODE
SELECT
NOMINAL
RPM
TIME PER
REVOLUTION
PRELOAD
COUNTS FOR
THE GIVEN
SPEED IN
DECIMAL
70% RPM
TIME PER
REVOLUTION
FOR 70% RPM
Divide by 1
8800
6.82 ms
32
144
6160
9.74 ms
Divide by 2
4400
13.64 ms
32
144
3080
19.48 ms
Divide by 4
2200
27.27 ms
32
144
1540
38.96 ms
Divide by 8
1100
54.54 ms
32
144
770
77.92 ms
Pins 51 and 52 are the fan tachometer inputs, FAN_TACH2 and FAN_TACH1, respectively.
The configuration registers for the fan tachometer inputs are defined in the “Runtime Registers” section.
Programmable
Divider
1, 2, 4, 8
Counter
Preload
Latch on Read
Sync
To nPME
Logic
32 kHz
MSB



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


데이터시트 다운로드

Go To PDF Page


링크 URL



ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크 투 데이터시트    |   링크교환   |   제조사별 검색
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