參數(shù)資料
型號： C8051F301-GMR
廠商： Silicon Laboratories Inc
文件頁數(shù)： 158/178頁
文件大?。?/td> 0K
描述： IC 8051 MCU 8K FLASH 11QFN
產(chǎn)品培訓模塊： Serial Communication Overview
標準包裝： 1,500
系列： C8051F30x
核心處理器： 8051
芯體尺寸： 8-位
速度： 25MHz
連通性： SMBus（2 線/I²C），UART/USART
外圍設(shè)備： POR，PWM，WDT
輸入/輸出數(shù)： 8
程序存儲器容量： 8KB（8K x 8）
程序存儲器類型： 閃存
RAM 容量： 256 x 8
電壓 - 電源 (Vcc/Vdd)： 2.7 V ~ 3.6 V
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 10-VFDFN 裸露焊盤
包裝： 帶卷 (TR)
配用： 336-1444-ND - ADAPTER PROGRAM TOOLSTICK F300
336-1319-ND - REFERENCE DESIGN STEPPER MOTOR
C8051F300/1/2/3/4/5
80
Rev. 2.9
8.4.
Power Management Modes
The CIP-51 core has two software programmable power management modes: Idle and Stop. Idle mode
halts the CPU while leaving the peripherals and clocks active. In Stop mode, the CPU is halted, all inter-
rupts and timers (except the Missing Clock Detector) are inactive, and the system clock is stopped (analog
peripherals remain in their selected states). Since clocks are running in Idle mode, power consumption is
dependent upon the system clock frequency and the number of peripherals left in active mode before
entering Idle. Stop mode consumes the least power. SFR Definition 8.12 describes the Power Control Reg-
ister (PCON) used to control the CIP-51's power management modes.
Although the CIP-51 has Idle and Stop modes built in (as with any standard 8051 architecture), power
management of the entire MCU is better accomplished by enabling/disabling individual peripherals as
needed. Each analog peripheral can be disabled when not in use and placed in low power mode. Digital
peripherals, such as timers or serial buses, draw little power when they are not in use. Turning off the oscil-
lators lowers power consumption considerably; however a reset is required to restart the MCU.
8.4.1. Idle Mode
Setting the Idle Mode Select bit (PCON.0) causes the CIP-51 to halt the CPU and enter Idle mode as soon
as the instruction that sets the bit completes execution.
All internal registers and memory maintain their
original data. All analog and digital peripherals can remain active during Idle mode.
Idle mode is terminated when an enabled interrupt is asserted or a reset occurs. The assertion of an
enabled interrupt will cause the Idle Mode Selection bit (PCON.0) to be cleared and the CPU to resume
operation. The pending interrupt will be serviced and the next instruction to be executed after the return
from interrupt (RETI) will be the instruction immediately following the one that set the Idle Mode Select bit.
If Idle mode is terminated by an internal or external reset, the CIP-51 performs a normal reset sequence
and begins program execution at address 0x0000.
If enabled, the Watchdog Timer (WDT) will eventually cause an internal watchdog reset and thereby termi-
nate the Idle mode. This feature protects the system from an unintended permanent shutdown in the event
of an inadvertent write to the PCON register. If this behavior is not desired, the WDT may be disabled by
software prior to entering the Idle mode if the WDT was initially configured to allow this operation. This pro-
vides the opportunity for additional power savings, allowing the system to remain in the Idle mode indefi-
nitely, waiting for an external stimulus to wake up the system. Refer to Section “16.3. Watchdog Timer
Mode” on page 164 for more information on the use and configuration of the WDT.
Note: Any instruction that sets the IDLE bit should be immediately followed by an instruction that
has 2 or more opcode bytes. For example:
// in 'C':
PCON |= 0x01;
// set IDLE bit
PCON
= PCON;
// ... followed by a 3-cycle dummy instruction
; in assembly:
ORL PCON, #01h
; set IDLE bit
MOV PCON, PCON
; ... followed by a 3-cycle dummy instruction
If the instruction following the write of the IDLE bit is a single-byte instruction and an interrupt occurs during
the execution phase of the instruction that sets the IDLE bit, the CPU may not wake from IDLE mode when
a future interrupt occurs.
相關(guān)PDF資料
PDF描述
P89LPC933HDH,512 IC 80C51 MCU 4KB FLASH 28TSSOP
P89LPC9321FDH,512 IC 80C51 MCU 8KB FLASH 28TSSOP
P89LPC9321FDH,518 IC 80C51 MCU FLASH 8K 28-TSSOP
VI-BN3-IX-F4 CONVERTER MOD DC/DC 24V 75W
VI-BN3-IX-F3 CONVERTER MOD DC/DC 24V 75W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
C8051F301-GS 功能描述:8位微控制器 -MCU 8KB Flash 2%osc 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
C8051F301-GSR 功能描述:8位微控制器 -MCU 8KB 2%osc MCU 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
C8051F301R 功能描述:8位微控制器 -MCU No ADC calOSC 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
C8051F302 功能描述:8位微控制器 -MCU 8KB 8ADC 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
C8051F302-GM 功能描述:8位微控制器 -MCU 8KB 8ADC 11P MCU 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
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*