146
Dahlan Rp Sitompul & Poltak Sihombing
193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222
7,59E-84 2,79E-84 1,03E-84 3,78E-85 1,39E-85 5,11E-86 1,88E-86 6,92E-87 2,55E-87 9,36E-88 3,45E-88 1,27E-88 4,66E-89 1,72E-89 6,31E-90 2,32E-90 8,54E-91 3,14E-91 1,16E-91 4,25E-92 1,56E-92 5,75E-93 2,12E-93 7,79E-94 2,86E-94 1,05E-94 3,88E-95 1,43E-95 5,25E-96 1,93E-96
2,08E-08 1,88E-08 1,7E-08 1,54E-08 1,39E-08 1,26E-08 1,14E-08 1,03E-08 9,33E-09 8,44E-09 7,63E-09 6,91E-09 6,25E-09 5,66E-09 5,12E-09 4,63E-09 4,19E-09 3,79E-09 3,43E-09 3,1E-09 2,81E-09 2,54E-09 2,3E-09 2,08E-09 1,88E-09 1,7E-09 1,54E-09 1,39E-09 1,26E-09 1,14E-09
Table 1: Contd., 0,000322 0,040133 0,000306 0,039142 0,000291 0,038175 0,000277 0,037233 0,000264 0,036314 0,000251 0,035417 0,000239 0,034543 0,000227 0,03369 0,000216 0,032858 0,000205 0,032047 0,000195 0,031255 0,000186 0,030484 0,000177 0,029731 0,000168 0,028997 0,00016 0,028281 0,000152 0,027583 0,000145 0,026902 0,000138 0,026238 0,000131 0,02559 0,000125 0,024958 0,000119 0,024342 0,000113 0,023741 0,000107 0,023155 0,000102 0,022583 9,7E-05 0,022025 9,23E-05 0,021482 8,78E-05 0,020951 8,35E-05 0,020434 7,94E-05 0,019929 7,56E-05 0,019437
0,447955 0,442391 0,436895 0,431468 0,426108 0,420815 0,415588 0,410425 0,405327 0,400292 0,395319 0,390408 0,385559 0,380769 0,376039 0,371368 0,366755 0,362199 0,357699 0,353256 0,348868 0,344534 0,340254 0,336028 0,331853 0,327731 0,32366 0,319639 0,315669 0,311747
1,496588 1,487264 1,477997 1,468789 1,459637 1,450543 1,441505 1,432524 1,423599 1,414729 1,405914 1,397155 1,38845 1,379799 1,371202 1,362659 1,354169 1,345732 1,337347 1,329015 1,320734 1,312506 1,304328 1,296201 1,288125 1,2801 1,272124 1,264198 1,256321 1,248494
From the discussion, table 1 and figure 6 above several points can be drawn as conclusions, such as,
The value of RC is made in such a way as to make sure to obtain the valid duration of reset (reset pin is maintained in a high state for 2 machine cycles or 24 clock cycles (2 μ seconds), waiting for the oscillator to stabilize in1 ms and for the power supply to be stable in 10 ms)
RC value of 1 ms is too short, and will lead to failure to achieve a valid reset state; voltage VR = 1.2 is reached (reset occurs) in just 1.427 ms
For RC = 80 ms reset (VR = 1.2 V) will be reached in about 115 ms
For RC = 160 ms reset (VR = 1.2 V) will be accomplished in about 222 ms; too long
Equation 10 is good enough to determine the value of RC, it can guarantee the achievement of a valid reset state of 8051 microcontroller
CONCLUSIONS This paper is expected to contribute to science, particularly in the areas of Microprocessor, Computer, Analog Electronics, and Digital Electronics. And it can be used as a media for teaching and learning process that will make it easier for student to comprehend the subject and the teacher or lecturer to carry out the teaching process better.
Impact Factor (JCC): 4.9467
Index Copernicus Value (ICV): 3.0