参数资料
型号: XE8805AMI028LF
厂商: Semtech
文件页数: 152/156页
文件大小: 0K
描述: IC DAS 16BIT FLASH 8K MTP 64LQFP
标准包装: 160
系列: XE880x
应用: 感测机
核心处理器: Coolrisc816?
程序存储器类型: 闪存(22 kB)
控制器系列: XE8000
RAM 容量: 512 x 8
接口: UART,USRT
输入/输出数: 24
电源电压: 2.4 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
包装: 托盘
供应商设备封装: 64-LQFP(10x10)
产品目录页面: 585 (CN2011-ZH PDF)
配用: XE8000MP-ND - PROG BOARD AND PROSTART2 CARD
Semtech 2006
www.semtech.com
16-9
XE8805/05A
16.5
Input Multiplexers
The ZoomingADC
has eight analog inputs AC_A(0) to AC_A(7) and four reference inputs AC_R(0) to
AC_R(3)
. Let us first define the differential input voltage VIN and reference voltage VREF respectively as:
INN
INP
IN
V
=
(V)
(Eq. 3)
and:
REFN
REFP
REF
V
=
(V)
(Eq. 4)
As shown in Table 16-11 the inputs can be configured in two ways: either as 4 differential channels (VIN1 =
AC_A(1)
- AC_A(0),..., VIN4 = AC_A(7) - AC_A(6)), or AC_A(0) can be used as a common reference, providing
7 signal paths all referred to AC_A(0). The control word for the analog input selection is AMUX[4:0]. Notice that
the bit AMUX[3] controls the sign of the input voltage.
AMUX[4:0]
(RegAcCfg5[5:1])
VINP
VINN
AMUX[4:0]
(RegAcCfg5[5:1])
VINP
VINN
00x00
00x01
00x10
00x11
AC_A(1)
AC_A(3)
AC_A(5)
AC_A(7)
AC_A(0)
AC_A(2)
AC_A(4)
AC_A(6)
01x00
01x01
01x10
01x11
AC_A(0)
AC_A(2)
AC_A(4)
AC_A(6)
AC_A(1)
AC_A(3)
AC_A(5)
AC_A(7)
10000
10001
10010
10011
10100
10101
10110
10111
AC_A(0)
AC_A(1)
AC_A(2)
AC_A(3)
AC_A(4)
AC_A(5)
AC_A(6)
AC_A(7)
AC_A(0)
11000
11001
11010
11011
11100
11101
11110
11111
AC_A(0)
AC_A(1)
AC_A(2)
AC_A(3)
AC_A(4)
AC_A(5)
AC_A(6)
AC_A(7)
Table 16-11. Analog input selection
Similarly, the reference voltage is chosen among two differential channels (VREF1 = AC_R(1)-AC_R(0) or VREF2 =
AC_R(3)-AC_R(2)
) as shown in Table 16-12. The selection bit is VMUX. The reference inputs VREFP and VREFN
(common-mode) can be up to the power supply range.
Not
Recommended
for
New
Designs
相关PDF资料
PDF描述
XE8807AMI026TLF IC MCU LOW PWR MTP FLASH 32-TQFP
XIO2200AGGW IC PCI-EXPRESS/BUS BRIDGE 176BGA
XIO2200AZGW IC PCI-EXPRESS/BUS BRIDGE 176BGA
XPC823ZT81B2T IC MPU POWERQUICC 81MHZ 256-PBGA
XPC8240RZU250E MCU HOST PROCESSOR 352-TBGA
相关代理商/技术参数
参数描述
XE8805AMI028TLF 制造商:Semtech Corporation 功能描述:
XE8805MI028 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Data Acquisition MCU
XE8806A 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Ultra Low-Power Low-Voltage
XE8806AMI000 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Ultra Low-Power Low-Voltage
XE8806AMI026LF 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Ultra Low-Power Low-Voltage