PIC10F222 Microchip Technology Inc., PIC10F222 Datasheet - Page 20

• Manufacturer Part Number: PIC10F222
• Description: High-performance Microcontrollers With 8-bit A/d
• Manufacturer: Microchip Technology Inc.

PIC10F220/222
4.6
The Oscillator Calibration (OSCCAL) register is used to
calibrate the internal precision 4/8 MHz oscillator. It
contains seven bits for calibration
After you move in the calibration constant, do not
change the value. See Section 8.2.2 “Internal 4/8 MHz
Oscillator”.
REGISTER 4-3:
DS41270E-page 18
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-1
bit 0
Note 1:
Note:
R/W-1
CAL6
OSCCAL Register
Overrides GP2/T0CKI control registers when enabled.
Erasing the device will also erase the pre-
programmed internal calibration value for
the internal oscillator. The calibration
value must be read prior to erasing the
part so it can be reprogrammed correctly
later.
CAL<6:0>: Oscillator Calibration bits
0111111 = Maximum frequency
•
•
•
0000001
0000000 = Center frequency
1111111
•
•
•
1000000 = Minimum frequency
FOSC4: INTOSC/4 Output Enable bit
1 = INTOSC/4 output onto GP2
0 = GP2/T0CKI applied to GP2
R/W-1
CAL5
OSCCAL – OSCILLATOR CALIBRATION REGISTER (ADDRESS: 05h)
W = Writable bit
‘1’ = Bit is set
.
R/W-1
CAL4
R/W-1
CAL3
(1)
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
R/W-1
CAL2
R/W-1
CAL1
© 2007 Microchip Technology Inc.
x = Bit is unknown
R/W-1
CAL0
FOSC4
R/W-0
bit 0