Datasheet

276
32142D–06/2013
ATUC64/128/256L3/4U
14.6.9 32KHz Oscillator Control Register
Name:
OSCCTRL32
Access Type: Read/Write
Reset Value: 0x00000004
Note: This register is only reset by Power-On Reset
• RESERVED
This bit must always be written to zero.
• STARTUP: Oscillator Start-up Time
Select start-up time for 32 KHz oscillator
31 30 29 28 27 26 25 24
RESERVED -------
23 22 21 20 19 18 17 16
----- STARTUP[2:0]
15 14 13 12 11 10 9 8
----- MODE[2:0]
76543210
----EN1KEN32KPINSELOSC32EN
Table 14-3. Start-up Time for 32 KHz Oscillator
STARTUP
Number of RCSYS Clock
Cycle
Approximative Equivalent Time
(RCOSC = 115 kHz)
00 0
1128 1.1ms
2 8192 72.3 ms
3 16384 143 ms
4 65536 570 ms
5 131072 1.1 s
6 262144 2.3 s
7 524288 4.6 s