Hardware manual

Rev. 3.0, 09/98, page 267 of 361
When the on-chip clock pulse generator is used, the STS bits should be set to allow a settling time
of at least 10ms. Table 15.3 lists the settling times selected by these bits at several clock
frequencies and indicates the recommended settings.
When the chip is externally clocked, the STS bits can be set to any value. The minimum value
(STS2 = STS1 = STS0 = “0”) is recommended.
Table 15.3 Times Set by Standby Timer Select Bits (Unit: ms)
System Clock Frequency (MHz)
STS2 STS1 STS0
Settling
Time
(states)
10864210.5
0 0 0 8192 0.8 1.0 1.3 2.0 4.1 8.2 16.4
0 0 1 16384 1.6 2.0 2.7 4.1 8.2 16.4 32.8
0 1 0 32768 3.3 4.1 5.5 8.2 16.4 32.8 65.5
0 1 1 65536 6.6 8.2 10.9 16.4 32.8 65.5 131.1
1 131072 13.1 16.4 21.8 32.8 65.5 131.1 262.1
Notes: 1. All times are in milliseconds.
2. Recommended values are printed in boldface.