Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.COM

X  

Preview PDF HTML

T89C51RD2-RDTIL Datasheet(PDF) 29 Page - ATMEL Corporation

Part # T89C51RD2-RDTIL
Description  0 to 40 MHz Flash Programmable 8-bit Microcontroller
PDF  104 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

T89C51RD2-RDTIL Datasheet(HTML) 29 Page - ATMEL Corporation

Back Button T89C51RD2-RDTIL Datasheet HTML 25Page - ATMEL Corporation T89C51RD2-RDTIL Datasheet HTML 26Page - ATMEL Corporation T89C51RD2-RDTIL Datasheet HTML 27Page - ATMEL Corporation T89C51RD2-RDTIL Datasheet HTML 28Page - ATMEL Corporation T89C51RD2-RDTIL Datasheet HTML 29Page - ATMEL Corporation T89C51RD2-RDTIL Datasheet HTML 30Page - ATMEL Corporation T89C51RD2-RDTIL Datasheet HTML 31Page - ATMEL Corporation T89C51RD2-RDTIL Datasheet HTML 32Page - ATMEL Corporation T89C51RD2-RDTIL Datasheet HTML 33Page - ATMEL Corporation Next Button
Zoom Inzoom in Zoom Outzoom out
 29 / 104 page
background image
29
T89C51RD2
4243G–8051–05/03
PCA Capture Mode
To use one of the PCA modules in the capture mode either one or both of the CCAPM
bits CAPN and CAPP for that module must be set. The external CEX input for the mod-
ule (on port 1) is sampled for a transition. When a valid transition occurs the PCA
hardware loads the value of the PCA counter registers (CH and CL) into the module’s
capture registers (CCAPnL and CCAPnH). If the CCFn bit for the module in the CCON-
SFR and the ECCFn bit in the CCAPMn SFR are set then an interrupt will be generated
(Refer to Figure 9).
Figure 9. PCA Capture Mode
16-bit Software Timer/
Compare Mode
The PCA modules can be used as software timers by setting both the ECOM and MAT
bits in the modules CCAPMn register. The PCA timer will be compared to the module’s
capture registers and when a match occurs an interrupt will occur if the CCFn (CCON
SFR) and the ECCFn (CCAPMn SFR) bits for the module are both set (See Figure 10).
CF
CR
CCON
0xD8
CH
CL
CCAPnH
CCAPnL
CCF4 CCF3
CCF2
CCF1
CCF0
PCA IT
PCA Counter/Timer
ECOMn
CCAPMn, n= 0 to 4
0xDA to 0xDE
CAPNn MATn TOGn PWMn ECCFn
CAPPn
Cex.n
Capture



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   |   Datasheet Upload   |   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