PIC12F629/675
2.2.2.6
PCON Register
The Power Control (PCON) register contains flag bits
to differentiate between a:
• Power-on Reset (POR)
• Brown-out Detect (BOD)
• Watchdog Timer Reset (WDT)
• External MCLR Reset
The PCON Register bits are shown in Register 2-6.
REGISTER 2-6:
PCON: POWER CONTROL REGISTER (ADDRESS: 8Eh)
U-0
U-0
—
U-0
—
U-0
—
U-0
—
U-0
—
R/W-0
POR
R/W-x
BOD
—
bit 7
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
bit 7-2
bit 1
Unimplemented: Read as ‘0’
POR: Power-on Reset Status bit
1= No Power-on Reset occurred
0= A Power-on Reset occurred (must be set in software after a Power-on Reset occurs)
bit 0
BOD: Brown-out Detect Status bit
1= No Brown-out Detect occurred
0= A Brown-out Detect occurred (must be set in software after a Brown-out Detect occurs)
2.2.2.7
OSCCAL Register
The Oscillator Calibration register (OSCCAL) is used to
calibrate the internal 4 MHz oscillator. It contains 6 bits
to adjust the frequency up or down to achieve 4 MHz.
The OSCCAL register bits are shown in Register 2-7.
REGISTER 2-7:
OSCCAL: OSCILLATOR CALIBRATION REGISTER (ADDRESS: 90h)
R/W-1
R/W-0
CAL4
R/W-0
CAL3
R/W-0
CAL2
R/W-0
CAL1
R/W-0
CAL0
U-0
—
U-0
—
CAL5
bit 7
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
bit 7-2
CAL5:CAL0: 6-bit Signed Oscillator Calibration bits
111111= Maximum frequency
100000= Center frequency
000000= Minimum frequency
bit 1-0
Unimplemented: Read as ‘0’
DS41190G-page 18
2010 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
