參數(shù)資料
型號: MR80C52CXXX-12SBR
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 12 MHz, MICROCONTROLLER, CQCC44
封裝: LCC-44
文件頁數(shù): 114/182頁
文件大?。?/td> 2994K
代理商: MR80C52CXXX-12SBR
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁當前第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁第172頁第173頁第174頁第175頁第176頁第177頁第178頁第179頁第180頁第181頁第182頁
37
1477K–AVR–08/10
ATtiny26(L)
Power
Management
and Sleep
Modes
Sleep modes enable the application to shut down unused modules in the MCU, thereby saving
power. The AVR provides various sleep modes allowing the user to tailor the power consump-
tion to the application’s requirements.
To enter any of the four sleep modes, the SE bit in MCUCR must be written to logic one and a
SLEEP instruction must be executed. The SM1, and SM0 bits in the MCUCR Register select
which sleep mode (Idle, ADC Noise Reduction, Power Down, or Stand-by) will be activated by
the SLEEP instruction. See Table 17 for a summary. If an enabled interrupt occurs while the
MCU is in a sleep mode, the MCU wakes up. The MCU is then halted for four cycles in addition
to the start-up time, it executes the interrupt routine, and resumes execution from the instruction
following SLEEP. The contents of the Register File and SRAM are unaltered when the device
wakes up from sleep. If a Reset occurs during sleep mode, the MCU wakes up and executes
from the Reset Vector.
Table 19 on page 39 presents the different clock systems in the ATtiny26, and their distribution.
The figure is helpful in selecting an appropriate sleep mode.
MCU Control
Register – MCUCR
The MCU Control Register contains control bits for general MCU functions.
Bits 7 – Res: Reserved Bit
This bit is a reserved bit in the ATtiny26(L) and always reads as zero.
Bit 6 – PUD: Pull-up Disable
When this bit is set (one), the pull-ups in the I/O ports are disabled even if the DDxn and
PORTxn Registers are configured to enable the pull-ups ({DDxn, PORTxn} = 0b01). See “Con-
figuring the Pin” on page 42 for more details about this feature.
Bit 5 – SE: Sleep Enable
The SE bit must be set (one) to make the MCU enter the Sleep mode when the SLEEP instruc-
tion is executed. To avoid the MCU entering the Sleep mode unless it is the programmers
purpose, it is recommended to set the Sleep Enable SE bit just before the execution of the
SLEEP instruction.
Bits 4,3 – SM1/SM0: Sleep Mode Select Bits 1 and 0
These bits select between the four available Sleep modes, as shown in the following table.
For details, refer to the paragraph “Sleep Modes” below.
Bit 2 – Res: Reserved Bit
This bit is a reserved bit in the ATtiny26(L) and always reads as zero.
Bits 1, 0 – ISC01, ISC00: Interrupt Sense Control 0 Bit 1 and Bit 0
Bit
765
4321
0
$35 ($55)
PUD
SE
SM1
SM0
ISC01
ISC00
MCUCR
Read/Write
R
R/W
R
R/W
Initial Value
000
0000
0
Table 17. Sleep Modes
SM1
SM0
Sleep Mode
0
Idle mode
0
1
ADC Noise Reduction mode
1
0
Power-down mode
1
Standby mode
相關PDF資料
PDF描述
MR80C32-16SC 8-BIT, 16 MHz, MICROCONTROLLER, CQCC44
MD80C32-30SCD 8-BIT, 30 MHz, MICROCONTROLLER, CDIP40
MR83C154TXXX-20P883R 8-BIT, MROM, 20 MHz, MICROCONTROLLER, CQCC44
MQ80C52XXX-25SBR 8-BIT, MROM, 25 MHz, MICROCONTROLLER, CQFP44
MC80C32-20SHXXX 8-BIT, 20 MHz, MICROCONTROLLER, CDIP40
相關代理商/技術參數(shù)
參數(shù)描述
MR80C86 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor
MR80C86/B 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Harris Corporation 功能描述:Microprocessor, 16 Bit, 44 Pin, Ceramic, LCC
MR80C86-2 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:CMOS 16-Bit Microprocessor
MR80C86-2/883 制造商:Rochester Electronics LLC 功能描述:- Bulk
MR80C86-2/B 制造商:Intersil Corporation 功能描述:MPU 80C86 16BIT CMOS 8MHZ 44PLCC - Rail/Tube