参数资料
型号: SC16C654BIBM,128
厂商: NXP Semiconductors
文件页数: 41/58页
文件大小: 0K
描述: IC QUAD UART 64BYTE 64LQFP
标准包装: 2,000
特点: 故障启动位检测
通道数: 4,QUART
FIFO's: 64 字节
电源电压: 2.5V,3.3V,5V
带自动流量控制功能:
带IrDA 编码器/解码器:
带故障启动位检测功能:
带调制解调器控制功能:
带CMOS:
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(7x7)
包装: 带卷 (TR)
其它名称: 935279068128
SC16C654BIBM-F
SC16C654BIBM-F-ND
46
7674F–AVR–09/09
ATmega164P/324P/644P
8.12
Register Description
8.12.1
SMCR – Sleep Mode Control Register
The Sleep Mode Control Register contains control bits for power management.
Bits 3, 2, 1 – SM2:0: Sleep Mode Select Bits 2, 1, and 0
These bits select between the five available sleep modes as shown in Table 8-2.
Note:
1. Standby modes are only recommended for use with external crystals or resonators.
Bit 0 – SE: Sleep Enable
The SE bit must be written to logic one to make the MCU enter the sleep mode when the SLEEP
instruction is executed. To avoid the MCU entering the sleep mode unless it is the programmer’s
purpose, it is recommended to write the Sleep Enable (SE) bit to one just before the execution of
the SLEEP instruction and to clear it immediately after waking up.
Bit
7
6
543210
––
SM2
SM1
SM0
SE
SMCR
Read/Write
RRRR
R/W
Initial Value
0
000000
Table 8-2.
Sleep Mode Select
SM2
SM1
SM0
Sleep Mode
000
Idle
0
1
ADC Noise Reduction
010
Power-down
011
Power-save
100
Reserved
101
Reserved
110
Standby(1)
1
Extended Standby(1)
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