W83977F Datasheet, PDF (109/181 Pages) Winbond – PLUG & PLAY 1.0A COMPLIANT

W83977F/ W83977AF
DV[2:0] : Divider Control
PRELIMINARY
These three bits are used to control divider and 32KHz oscillator.
TIME-BASE DV2 DV1 DV0
FREQUENCY
OPERATION MODE
DIVIDER RESET
32.768KHZ
0
0
X
NO
-
32.768KHZ
0
1
0
YES
-
32.768KHZ
0
1
1
NO
-
32.768KHZ
1
0
X
NO
-
32.768KHZ
1
1
X
NO
YES
RS[3:0] : Periodic Interrupt Rate
PERIODIC INTERRUPT RATE TABLE
RS[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
TIME BASE
None
3.90625mS / 256Hz
7.8125mS / 128Hz
122.070µS / 8.192KHz
244.141µS / 4.096KHz
488.281µS / 2.048KHz
976.562µS / 1.024KHz
1.953125mS / 512Hz
3.90625mS / 256Hz
7.8125mS / 128Hz
15.625ms / 64Hz
31.25ms / 32Hz
62.5ms / 16Hz
125ms / 8Hz
250ms / 4Hz
500ms / 2Hz
- 97 -
Publication Release Date:March 1998
Revision 0.58