参数资料
型号: SC16C654BIA68,518
厂商: NXP Semiconductors
文件页数: 26/58页
文件大小: 0K
描述: IC UART QUAD W/FIFO 68-PLCC
产品培训模块: Stand-Alone UARTs
标准包装: 1
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: 68-LCC(J 形引线)
供应商设备封装: 68-PLCC
包装: 剪切带 (CT)
产品目录页面: 828 (CN2011-ZH PDF)
其它名称: 568-2047
568-2047-ND
32
7674F–AVR–09/09
ATmega164P/324P/644P
Figure 7-2.
Crystal Oscillator Connections
7.3
Low Power Crystal Oscillator
This Crystal Oscillator is a low power oscillator, with reduced voltage swing on the XTAL2 out-
put. It gives the lowest power consumption, but is not capable of driving other clock inputs, and
may be more susceptible to noise in noisy environments. In these cases, refer to the “Full Swing
Some initial guidelines for choosing capacitors for use with crystals are given in Table 7-3. The
crystal should be connected as described in “Clock Source Connections” on page 31.
The Low Power Oscillator can operate in three different modes, each optimized for a specific fre-
quency range. The operating mode is selected by the fuses CKSEL3..1 as shown in Table 7-3.
Notes:
1. The frequency ranges are preliminary values. Actual values are TBD.
2. This option should not be used with crystals, only with ceramic resonators.
3. If 8 MHz frequency exceeds the specification of the device (depends on V
CC), the CKDIV8
Fuse can be programmed in order to divide the internal frequency by 8. It must be ensured
that the resulting divided clock meets the frequency specification of the device.
The CKSEL0 Fuse together with the SUT1..0 Fuses select the start-up times as shown in Table
XTAL2
XTAL1
GND
C2
C1
Table 7-3.
Low Power Crystal Oscillator Operating Modes
Frequency Range(1) (MHz)
CKSEL3..1
Recommended Range for Capacitors C1
and C2 (pF)
0.4 - 0.9
100(2)
0.9 - 3.0
101
12 - 22
3.0 - 8.0
110
12 - 22
8.0 - 16.0
111
12 - 22
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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