Datasheet

ADuC7033
Rev. B | Page 71 of 140
OSC0STA Register
Name: OSC0STA
Address: 0xFFFF0444
Default
Va lu e:
0x00
Access: Read access only
Function: This 8-bit register gives the status of the low
power oscillator calibration routine.
Table 49. OSC0STA MMR Bit Designations
Bit Description
7 to 2 Reserved.
1 Calibration Complete.
Set by hardware on full completion of a
calibration cycle.
Cleared by a read of OSC0VAL1.
0
Set if calibration is in progress. Cleared if calibration
is completed.
OSC0VAL0 Register
Name: OSC0VAL0
Address: 0xFFFF0448
Default
Va lu e:
0x0000
Access: Read access only
Function: This 9-bit counter is clocked from either the
131 kHz precision oscillator or the 32.768 kHz
external crystal.
OSC0VAL1 Register
Name: OSC0VAL1
Address: 0xFFFF044C
Default
Va lu e:
0x0000
Access: Read access only
Function: This 10-bit counter is clocked from the low power,
131 kHz oscillator.