参数资料
| 型号： | SC16C654BIA68,529 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 39/58页 |
| 文件大小： | 0K |
| 描述： | IC QUAD UART 64BYTE 68PLCC |
| 标准包装： | 18 |
| 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： | 是 |
| 带IrDA 编码器/解码器： | 是 |
| 带故障启动位检测功能： | 是 |
| 带调制解调器控制功能： | 是 |
| 带CMOS： | 是 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 68-LCC（J 形引线） |
| 供应商设备封装： | 68-PLCC |
| 包装： | 管件 |
| 其它名称： | 935274935529 SC16C654BIA68-S SC16C654BIA68-S-ND |
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44
7674F–AVR–09/09
ATmega164P/324P/644P
8.10
Power Reduction Register
The Power Reduction Register(PRR), see “PRR – Power Reduction Register” on page 47, pro-
vides a method to stop the clock to individual peripherals to reduce power consumption. The
current state of the peripheral is frozen and the I/O registers can not be read or written.
Resources used by the peripheral when stopping the clock will remain occupied, hence the
peripheral should in most cases be disabled before stopping the clock. Waking up a module,
which is done by clearing the bit in PRR, puts the module in the same state as before shutdown.
Module shutdown can be used in Idle mode and Active mode to significantly reduce the overall
power consumption. In all other sleep modes, the clock is already stopped.
8.11
Minimizing Power Consumption
There are several issues to consider when trying to minimize the power consumption in an AVR
controlled system. In general, sleep modes should be used as much as possible, and the sleep
mode should be selected so that as few as possible of the device’s functions are operating. All
functions not needed should be disabled. In particular, the following modules may need special
consideration when trying to achieve the lowest possible power consumption.
8.11.1
Analog to Digital Converter
If enabled, the ADC will be enabled in all sleep modes. To save power, the ADC should be dis-
abled before entering any sleep mode. When the ADC is turned off and on again, the next
conversion will be an extended conversion. Refer to “ADC - Analog-to-digital Converter” on page
243 for details on ADC operation.
8.11.2
Analog Comparator
When entering Idle mode, the Analog Comparator should be disabled if not used. When entering
ADC Noise Reduction mode, the Analog Comparator should be disabled. In other sleep modes,
the Analog Comparator is automatically disabled. However, if the Analog Comparator is set up
to use the Internal Voltage Reference as input, the Analog Comparator should be disabled in all
sleep modes. Otherwise, the Internal Voltage Reference will be enabled, independent of sleep
mode. Refer to “AC - Analog Comparator” on page 240 for details on how to configure the Ana-
log Comparator.
8.11.3
Brown-out Detector
If the Brown-out Detector is not needed by the application, this module should be turned off. If
the Brown-out Detector is enabled by the BODLEVEL Fuses, it will be enabled in all sleep
modes, and hence, always consume power. In the deeper sleep modes, this will contribute sig-
nificantly to the total current consumption. Refer to “Brown-out Detection” on page 52 for details
on how to configure the Brown-out Detector.
8.11.4
Internal Voltage Reference
The Internal Voltage Reference will be enabled when needed by the Brown-out Detection, the
Analog Comparator or the ADC. If these modules are disabled as described in the sections
above, the internal voltage reference will be disabled and it will not be consuming power. When
turned on again, the user must allow the reference to start up before the output is used. If the
reference is kept on in sleep mode, the output can be used immediately. Refer to “Internal Volt-
age Reference” on page 53 for details on the start-up time.
相关PDF资料 |
PDF描述 |
|---|---|
| SC16C654BIA68,512 | ID QUAD UART 64BYTE 68PLCC |
| SC16C654BIA68,518 | IC UART QUAD W/FIFO 68-PLCC |
| SCC2681AC1N28,112 | IC UART 28-DIP |
| SC26C92C1B,551 | IC UART DUAL W/FIFO 44PQFP |
| SCC2692AC1A44,512 | IC UART DUAL 44-PLCC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SC16C654BIA68-S | 功能描述:UART 接口集成电路 16CB 2.5V-5V 4CH UART 64B FIFO RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| SC16C654BIA68-T | 功能描述:UART 接口集成电路 16CB 2.5V-5V 4CH UART 64B FIFO RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| SC16C654BIB64 | 功能描述:UART 接口集成电路 16CB 2.5V-5V 4CH UART 64B FIFO RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| SC16C654BIB64,128 | 功能描述:UART 接口集成电路 16CB 2.5V-5V 4CH RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
| SC16C654BIB64,151 | 功能描述:UART 接口集成电路 16CB 2.5V-5V 4CH RoHS:否 制造商:Texas Instruments 通道数量:2 数据速率:3 Mbps 电源电压-最大:3.6 V 电源电压-最小:2.7 V 电源电流:20 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:LQFP-48 封装:Reel |
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