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参数资料
型号： ATMEGA164A-PU
厂商： Atmel
文件页数： 104/160页
文件大小： 0K
描述： IC MCU AVR 16K 20MHZ 40PDIP
产品培训模块： MCU Product Line Introduction
megaAVR Introduction
标准包装： 14
系列： AVR® ATmega
核心处理器： AVR
芯体尺寸： 8-位
速度： 20MHz
连通性： I²C，SPI，UART/USART
外围设备： 欠压检测/复位，POR，PWM，WDT
输入/输出数： 32
程序存储器容量： 16KB（8K x 16）
程序存储器类型： 闪存
EEPROM 大小： 512 x 8
RAM 容量： 1K x 8
电压 - 电源 (Vcc/Vdd)： 1.8 V ~ 5.5 V
数据转换器： A/D 8x10b
振荡器型： 内部
工作温度： -40°C ~ 85°C
封装/外壳： 40-DIP（0.600"，15.24mm）
包装： 管件
配用： ATSTK600-RC05-ND - STK600 ROUTING CARD AVR
48
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
10.12.2
MCUCR – MCU Control Register
Note:
1. Only available in the Atmel ATmega164PA/324PA/644PA/1284P.
Bit 6 – BODS: BOD Sleep
The BODS bit must be written to logic one in order to turn off BOD during sleep, see Table 10-1
on page 42. Writing to the BODS bit is controlled by a timed sequence and an enable bit,
BODSE in MCUCR. To disable BOD in relevant sleep modes, both BODS and BODSE must first
be set to one. Then, to set the BODS bit, BODS must be set to one and BODSE must be set to
zero within four clock cycles.
The BODS bit is active three clock cycles after it is set. A sleep instruction must be executed
while BODS is active in order to turn off the BOD for the actual sleep mode. The BODS bit is
automatically cleared after three clock cycles.
Bit 5 – BODSE: BOD Sleep Enable
BODSE enables setting of BODS control bit, as explained in BODS bit description. BOD disable
is controlled by a timed sequence.
10.12.3
PRR0 – Power Reduction Register 0
Bit 7 – PRTWI: Power Reduction TWI
Writing a logic one to this bit shuts down the TWI by stopping the clock to the module. When
waking up the TWI again, the TWI should be re initialized to ensure proper operation.
Bit 6 – PRTIM2: Power Reduction Timer/Counter2
Writing a logic one to this bit shuts down the Timer/Counter2 module in synchronous mode (AS2
is 0). When the Timer/Counter2 is enabled, operation will continue like before the shutdown.
Bit 5 – PRTIM0: Power Reduction Timer/Counter0
Writing a logic one to this bit shuts down the Timer/Counter0 module. When the Timer/Counter0
is enabled, operation will continue like before the shutdown.
Bit 4 – PRUSART1: Power Reduction USART1
Writing a logic one to this bit shuts down the USART1 by stopping the clock to the module.
When waking up the USART1 again, the USART1 should be reinitialized to ensure proper
operation.
Bit
7
6
5
4
3
2
1
0
0x35 (0x55)
JTD
BODS
(1)
BODSE
(1)
PUD
–
IVSEL
IVCE
MCUCR
Read/Write
R/W
R
R/W
Initial Value
0
Bit
7
6
5
4
3
2
1
0
(0x64)
PRTWI
PRTIM2
PRTIM0
PRUSART1
PRTIM1
PRSPI
PRUSART0
PRADC
PRR0
Read/Write
R/W
Initial Value
0
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