參數(shù)資料
型號(hào): DV164136
廠商: Microchip Technology
文件頁(yè)數(shù): 51/107頁(yè)
文件大?。?/td> 0K
描述: DEVELOPMENT KIT FOR PIC18
產(chǎn)品培訓(xùn)模塊: PIC18 J Series MCU Overview
標(biāo)準(zhǔn)包裝: 1
系列: PIC®
類型: MCU
適用于相關(guān)產(chǎn)品: PIC18F8722,PIC18F87J11
所含物品: 板,線纜,CD,PICkit? 3 個(gè)編程器,電源
產(chǎn)品目錄頁(yè)面: 659 (CN2011-ZH PDF)
相關(guān)產(chǎn)品: PIC18F87J11-I/PT-ND - IC PIC MCU FLASH 64KX16 80TQFP
PIC18F87J11T-I/PTTR-ND - IC PIC MCU FLASH 64KX16 80TQFP
PIC18F8722T-E/PT-ND - IC PIC MCU FLASH 64KX16 80TQFP
PIC18F8722-E/PT-ND - IC PIC MCU FLASH 64KX16 80TQFP
PIC18F8722T-I/PT-ND - IC PIC MCU FLASH 64KX16 80TQFP
PIC18F8722-I/PT-ND - IC PIC MCU FLASH 64KX16 80TQFP
PIC18F87J11 FAMILY
DS39778E-page 48
2007-2012 Microchip Technology Inc.
4.1.3
CLOCK TRANSITIONS AND STATUS
INDICATORS
The length of the transition between clock sources is
the sum of two cycles of the old clock source and three
to four cycles of the new clock source. This formula
assumes that the new clock source is stable.
Two bits indicate the current clock source and its status:
OSTS (OSCCON<3>) and T1RUN (T1CON<6>). In
general, only one of these bits will be set while in a given
power-managed mode. When the OSTS bit is set, the
primary clock is providing the device clock. When the
T1RUN bit is set, the Timer1 oscillator is providing the
clock. If neither of these bits is set, INTRC is clocking the
device.
4.1.4
MULTIPLE SLEEP COMMANDS
The power-managed mode that is invoked with the
SLEEP
instruction is determined by the setting of the
IDLEN bit at the time the instruction is executed. If
another SLEEP instruction is executed, the device will
enter the power-managed mode specified by IDLEN at
that time. If IDLEN has changed, the device will enter
the new power-managed mode specified by the new
setting.
4.2
Run Modes
In the Run modes, clocks to both the core and
peripherals are active. The difference between these
modes is the clock source.
4.2.1
PRI_RUN MODE
The PRI_RUN mode is the normal, full-power execu-
tion mode of the microcontroller. This is also the default
mode upon a device Reset unless Two-Speed Start-up
for details). In this mode, the OSTS bit is set (see
).
4.2.2
SEC_RUN MODE
The SEC_RUN mode is the compatible mode to the
“clock switching” feature offered in other PIC18
devices. In this mode, the CPU and peripherals are
clocked from the Timer1 oscillator. This gives users the
option of lower power consumption while still using a
high-accuracy clock source.
SEC_RUN mode is entered by setting the SCS<1:0>
bits to ‘01’. The device clock source is switched to the
Timer1 oscillator (see Figure 4-1). The primary oscilla-
tor is shut down, the T1RUN bit (T1CON<6>) is set and
the OSTS bit is cleared.
Note:
Executing a SLEEP instruction does not
necessarily place the device into Sleep
mode. It acts as the trigger to place the
controller into either the Sleep mode, or
one of the Idle modes, depending on the
setting of the IDLEN bit.
Note:
The Timer1 oscillator should already be
running prior to entering SEC_RUN mode.
If the T1OSCEN bit is not set when the
SCS<1:0> bits are set to ‘01’, entry to
SEC_RUN mode will not occur. If the
Timer1 oscillator is enabled, but not yet run-
ning, device clocks will be delayed until the
oscillator has started. In such situations, ini-
tial oscillator operation is far from stable and
unpredictable operation may result.
相關(guān)PDF資料
PDF描述
GBM25DCWT CONN EDGECARD 50POS DIP .156 SLD
GCM24DCTN CONN EDGECARD 48POS DIP .156 SLD
1435863-2 PATCHCORD CAT6 YLW/YLW BOOT 2'
1435862-2 PATCHCORD CAT6 RED/RED BOOT 2'
V48C5T50BF3 CONVERTER MOD DC/DC 5V 50W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DV164139 功能描述:開(kāi)發(fā)板和工具包 - PIC / DSPIC Lo PIn Count USB Dev Kit (w/PICkit 3) RoHS:否 制造商:Microchip Technology 產(chǎn)品:Starter Kits 工具用于評(píng)估:chipKIT 核心:Uno32 接口類型: 工作電源電壓:
DV17K3225T 制造商:SEI Stackpole Electronics Inc 功能描述:- Tape and Reel 制造商:SEI Stackpole Electronics Inc 功能描述:Var MOV 17VAC/22VDC 100A 27V 3225 SMD T/R
DV17K4032T 制造商:SEI Stackpole Electronics Inc 功能描述:VAR 17VAC 22VDC 250A 27V 4032 SMD - Tape and Reel 制造商:SEI Stackpole Electronics Inc 功能描述:Var MOV 17VAC/22VDC 250A 27V 4032 SMD T/R
DV18-145MB-3K 功能描述:端子 PIN -DSC 22-18 145X032 VYL RED RoHS:否 制造商:AVX 產(chǎn)品:Junction Box - Wire to Wire 系列:9826 線規(guī):26-18 接線柱/接頭大小: 絕緣: 顏色:Red 型式:Female 觸點(diǎn)電鍍:Tin over Nickel 觸點(diǎn)材料:Beryllium Copper, Phosphor Bronze 端接類型:Crimp
DV18-145M-C 功能描述:端子 MALE BLADE ADAPT RoHS:否 制造商:AVX 產(chǎn)品:Junction Box - Wire to Wire 系列:9826 線規(guī):26-18 接線柱/接頭大小: 絕緣: 顏色:Red 型式:Female 觸點(diǎn)電鍍:Tin over Nickel 觸點(diǎn)材料:Beryllium Copper, Phosphor Bronze 端接類型:Crimp