參數(shù)資料
型號: ATMEGA649V-8AUR
廠商: Atmel
文件頁數(shù): 111/146頁
文件大?。?/td> 0K
描述: IC AVR MCU FLASH 64K 1.8V 64TQFP
產(chǎn)品培訓模塊: megaAVR Introduction
標準包裝: 1,000
系列: AVR® ATmega
核心處理器: AVR
芯體尺寸: 8-位
速度: 8MHz
連通性: SPI,UART/USART,USI
外圍設備: 欠壓檢測/復位,LCD,POR,PWM,WDT
輸入/輸出數(shù): 53
程序存儲器容量: 64KB(32K x 16)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 2K x 8
RAM 容量: 4K x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 64-TQFP
包裝: 帶卷 (TR)
其它名稱: ATMEGA649V-8AUR-ND
ATMEGA649V-8AURTR
40
2552K–AVR–04/11
ATmega329/3290/649/6490
9.8.2
PRR – Power Reduction Register
Bits 7, 6, 5 - Reserved bits
These bits are reserved bits in ATmega329/3290/649/6490 and will always read as zero.
Bit 4 - PRLCD: Power Reduction LCD
Writing logic one to this bit shuts down the LCD controller. The LCD controller must be disabled
and the display discharged before shut down. See "Disabling the LCD" on page 217 for details
on how to disable the LCD controller.
Bit 3 - PRTIM1: Power Reduction Timer/Counter1
Writing logic one to this bit shuts down the Timer/Counter1 module. When Timer/Counter1 is
enabled, operation will continue like before the shutdown.
Bit 2 - PRSPI: Power Reduction Serial Peripheral Interface
Writing logic one to this bit shuts down the Serial Peripheral Interface by stopping the clock to
the module. When waking up the SPI again, the SPI should be re-initialized to ensure proper
operation.
Bit 1 - PRUSART: Power Reduction USART
Writing logic one to this bit shuts down the USART by stopping the clock to the module. When
waking up the USART again, the USART should be re-initialized to ensure proper operation.
Bit 0 - PRADC: Power Reduction ADC
Writing logic one to this bit shuts down the ADC. The ADC must be disabled before shut down.
The analog comparator cannot use the ADC input MUX when the ADC is shut down.
Note:
The Analog Comparator is disabled using the ACD-bit in the “ACSR – Analog Comparator Control
Bit
7
6
5
4
3
210
PRLCD
PRTIM1
PRSPI
PRUSART0
PRADC
PRR
Read/Write
R
R/W
Initial Value
0
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