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10F222 датащи(PDF) 20 Page - Microchip Technology

номер детали 10F222
подробное описание детали  High-Performance Microcontrollers with 8-bit A/D
PDF  86 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

10F222 датащи(HTML) 20 Page - Microchip Technology

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PIC10F220/222
DS41270E-page 18
© 2007 Microchip Technology Inc.
4.6
OSCCAL Register
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”.
Note:
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.
REGISTER 4-3:
OSCCAL – OSCILLATOR CALIBRATION REGISTER (ADDRESS: 05h)
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-1
R/W-0
CAL6
CAL5
CAL4
CAL3
CAL2
CAL1
CAL0
FOSC4
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-1
CAL<6:0>: Oscillator Calibration bits
0111111
= Maximum frequency
•
•
•
0000001
0000000
= Center frequency
1111111
•
•
•
1000000
= Minimum frequency
bit 0
FOSC4: INTOSC/4 Output Enable bit(1)
1
= INTOSC/4 output onto GP2
0
= GP2/T0CKI applied to GP2
Note 1:
Overrides GP2/T0CKI control registers when enabled.



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