參數(shù)資料
型號: PIC12F505
廠商: Microchip Technology Inc.
元件分類: 8位微控制器
英文描述: 8/14-Pin, 8-Bit Flash Microcontrollers
中文描述: 8/14-Pin,8位閃存微控制器
文件頁數(shù): 26/100頁
文件大小: 741K
代理商: PIC12F505
PIC12F508/509/16F505
DS41236C-page 24
Preliminary
2007 Microchip Technology Inc.
4.6
OSCCAL Register
The Oscillator Calibration (OSCCAL) register is used to
calibrate the internal precision 4 MHz oscillator. It
contains seven bits for calibration
.
After you move in the calibration constant, do not
change the value. See
Section 7.2.5 “Internal 4 MHz
RC Oscillator”
.
REGISTER 4-5:
OSCCAL REGISTER (ADDRESS: 05h)
R/W-1
R/W-1
CAL6
CAL5
bit 7
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.
R/W-1
CAL4
R/W-1
CAL3
R/W-1
CAL2
R/W-1
CAL1
R/W-1
CAL0
R/W-0
bit 0
bit 7-1
CAL<6:0>:
Oscillator Calibration bits
0111111
=Maximum frequency
0000001
0000000
=Center frequency
1111111
1000000
=Minimum frequency
Unimplemented
:
Read as ‘
0
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
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