參數(shù)資料
型號： PIC12F519
廠商： Microchip Technology Inc.
英文描述： 8-Pin, 8-Bit Flash Microcontroller
中文描述： 8引腳，8位閃存微控制器
文件頁數(shù)： 39/88頁
文件大小： 802K
代理商： PIC12F519
2007 Microchip Technology Inc.
Preliminary
DS41319A-page 37
PIC12F519
8.2
Oscillator Configurations
8.2.1
OSCILLATOR TYPES
The PIC12F519 device can be operated in up to four
different oscillator modes. The user can program using
the Configuration bits (FOSC<1:0>), to select one of
these modes:
LP:
XT:
INTRC: Internal 4 MHz or 8 MHz Oscillator
EXTRC: External Resistor/Capacitor
Low-Power Crystal
Crystal/Resonator
8.2.2
CRYSTAL OSCILLATOR/CERAMIC
RESONATORS
In XT or LP modes, a crystal or ceramic resonator is
connected to the (RB5)/OSC1/(CLKIN) and (RB4)/OSC2
pins to establish oscillation (Figure 8-1). The PIC12F519
oscillator designs require the use of a parallel cut crystal.
Use of a series cut crystal may give a frequency out of the
crystal manufacturers specifications. When in XT or LP
modes, the device can have an external clock source
drive the (RB5)/OSC1/CLKIN pin (Figure 8-2). When the
part is used in this fashion, the output drive levels on the
OSC2 pin are very weak. This pin should be left open and
unloaded. Also when using this mode, the external clock
should observe the frequency limits for the clock mode
chosen (XT or LP).
FIGURE 8-1:
CRYSTAL OPERATION
(OR CERAMIC
RESONATOR)
(XT OR LP OSC
CONFIGURATION)
FIGURE 8-2:
EXTERNAL CLOCK INPUT
OPERATION (XT OR LP
OSC CONFIGURATION)
TABLE 8-1:
CAPACITOR SELECTION FOR
CERAMIC RESONATORS
TABLE 8-2:
CAPACITOR SELECTION FOR
CRYSTAL OSCILLATOR –
PIC12F519
(2)
Note 1:
The user should verify that the device
oscillator
starts
expected. Adjusting the loading capacitor
values and/or the Oscillator mode may
be required.
and
performs
as
Note
1:
See Capacitor Selection tables for
recommended values of C1 and C2.
A series resistor (RS) may be required for AT
strip cut crystals.
RF approx. value = 10 M
Ω
.
2:
3:
C1
(1)
C2
(1)
XTAL
OSC2
OSC1
RF
(3)
Sleep
To internal
logic
RS
(2)
PIC12F519
Osc
Type
Resonator
Freq.
Cap. Range
C1
Cap. Range
C2
XT
Note:
4.0 MHz
Component values shown are for design
guidance only. Since each resonator has
its own characteristics, the user should
consult the resonator manufacturer for
appropriate values of external compo-
nents.
30 pF
30 pF
Osc
Type
Resonator
Freq.
Cap.Range
C1
Cap. Range
C2
LP
XT
32 kHz
(1)
200 kHz
1 MHz
4 MHz
For V
DD
> 4.5V, C1 = C2
≈
30 pF is
recommended.
Component values shown are for design
guidance only. Rs may be required to
avoid overdriving crystals with low drive
level specification. Since each crystal has
its own characteristics, the user should
consult the crystal manufacturer for
appropriate values of external compo-
nents.
15 pF
47-68 pF
15 pF
15 pF
15 pF
47-68 pF
15 pF
15 pF
Note 1:
2:
Clock from
ext. system
OSC1
OSC2
Open
PIC12F519
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相關代理商/技術參數(shù)
參數(shù)描述
PIC12F519_08 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:8-Pin, 8-Bit Flash Microcontrollers
PIC12F519-E/MC 功能描述:8位微控制器 -MCU 15KB Flash Prgrm 64B 8MHz Intrnl Oscilatr RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
PIC12F519-E/MS 功能描述:8位微控制器 -MCU 15KB Flash Prgrm 64B 8MHz Intrnl Oscilatr RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
PIC12F519-E/P 功能描述:8位微控制器 -MCU 15KB Flash Prgrm 64B 8MHz Intrnl Oscilatr RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
PIC12F519-E/SN 功能描述:8位微控制器 -MCU 15KB Flash Prgrm 64B 8MHz Intrnl Oscilatr RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
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