Rainbow-electronics DS1687 Bedienungsanleitung PDF herunterladen (Seite 17)

DS1685/DS1687

17 of 38

intervals, or await the next needed software function.

Table 2. PERIODIC INTERRUPT RATE AND SQUARE-WAVE OUTPUT

FREQUENCY

EXT.

SELECT BITS REGISTER A

E32K RS3 RS2 RS1 RS0

PERIODIC

INTERRUPT RATE

SQW OUTPUT

FREQUENCY

0 0 0 0 0 None None

0 0 0 0 1 3.90625ms 256Hz

0 0 0 1 0 7.8125ms 128Hz

0 0 0 1 1 122.070µs 8.192kHz

0 0 1 0 0 244.141µs 4.096kHz

0 0 1 0 1 488.281µs 2.048kHz

0 0 1 1 0 976.5625µs 1.024kHz

0 0 1 1 1 1.953125ms 512Hz

0 1 0 0 0 3.90625ms 256Hz

0 1 0 0 1 7.8125ms 128Hz

0 1 0 1 0 15.625ms 64Hz

0 1 0 1 1 31.25ms 32Hz

0 1 1 0 0 62.5ms 16Hz

0 1 1 0 1 125ms 8Hz

0 1 1 1 0 250ms 4Hz

0 1 1 1 1 500ms 2Hz

1 X X X X * 32.768kHz

*RS3–RS0 determine periodic interrupt rates as listed for E32K=0.

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 37 38

Keine Kommentare

Rainbow-electronics DS1687 Bedienungsanleitung Seite 17