AT89C5115-RATUM datasheet(68/113 Pages) ATMEL

部件名	AT89C5115-RATUM

功能描述	Low Pin Count 8-bit Microcontroller with A/D Converter and 16 KBytes Flash Memory

PDF	113 Pages

Scroll/Zoom	100%

制造商	ATMEL [ATMEL Corporation]

网页	http://www.atmel.com

标志

68 / 113 page

AT89C5115

4128G–8051–02/08

Watchdog Programming

The three lower bits (S0, S1, S2) located into WDTPRG register permit to program the

WDT duration.

Table 49. Machine Cycle Count

To compute WD Timeout, the following formula is applied:

Note:

Svalue represents the decimal value of (S2 S1 S0)

Find Hereafter computed Timeout values for fOSCXTAL = 12 MHz in X1 mode

Table 50. Timeout Computation

Machine Cycle Count

214 - 1

215 - 1

216 - 1

217 - 1

218 - 1

219 - 1

220 - 1

221 - 1

fOSC=12 MHz

fOSC=16MHz

fOSC=20 MHz

16.38 ms

12.28 ms

9.82 ms

32.77 ms

24.57 ms

19.66 ms

65.54 ms

49.14 ms

39.32 ms

131.07 ms

98.28 ms

78.64 ms

262.14 ms

196.56 ms

157.28 ms

524.29 ms

393.12 ms

314.56 ms

1.05 s

786.24 ms

629.12 ms

2.10 s

1.57 s

1.25 s

FTime

Out

o sc

WD X

∧

Sva lu e

(

)

-----------------------------------------------------------------------------

–

AT89C5115-RATUM 数据表(PDF) 68 Page - ATMEL Corporation

AT89C5115-RATUM 数据表(HTML) 68 Page - ATMEL Corporation

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

数据表下载