XE8805AMI028LF Semtech, XE8805AMI028LF Datasheet - Page 95
XE8805AMI028LF
Manufacturer Part Number
XE8805AMI028LF
Description
IC DAS 16BIT FLASH 8K MTP 64LQFP
Manufacturer
Semtech
Datasheet
1.XE8805AMI028LF.pdf
(156 pages)
Specifications of XE8805AMI028LF
Applications
Sensing Machine
Core Processor
RISC
Program Memory Type
FLASH (22 kB)
Controller Series
XE8000
Ram Size
512 x 8
Interface
UART, USRT
Number Of I /o
24
Voltage - Supply
2.4 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
64-LQFP
Supply Voltage Range
2.4V To 5.5V
Operating Temperature Range
-40°C To +85°C
Digital Ic Case Style
LQFP
No. Of Pins
64
For Use With
XE8000MP - PROG BOARD AND PROSTART2 CARD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
XE8805AMI028LF
Manufacturer:
SEMTECH/美国升特
Quantity:
20 000
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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 V
and:
As shown in Table 16-11 the inputs can be configured in two ways: either as 4 differential channels (V
AC_A(1) - AC_A(0),..., V
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.
Similarly, the reference voltage is chosen among two differential channels (V
AC_R(3)-AC_R(2)) as shown in Table 16-12. The selection bit is VMUX. The reference inputs V
(common-mode) can be up to the power supply range.
© Semtech 2006
(RegAcCfg5[5:1])
V
V
IN
REF
AMUX[4:0]
=
V
=
10000
10001
10010
10011
10100
10101
10110
10111
00x00
00x01
00x10
00x11
INP
V
REFP
−
V
INN
−
V
REFN
IN4
= AC_A(7) - AC_A(6)), or AC_A(0) can be used as a common reference, providing
AC_A(1)
AC_A(3)
AC_A(5)
AC_A(7)
AC_A(0)
AC_A(1)
AC_A(2)
AC_A(3)
AC_A(4)
AC_A(5)
AC_A(6)
AC_A(7)
V
(V)
(V)
INP
AC_A(0)
AC_A(2)
AC_A(4)
AC_A(6)
AC_A(0)
Table 16-11. Analog input selection
V
INN
(RegAcCfg5[5:1])
16-9
IN
AMUX[4:0]
and reference voltage V
11000
11001
11010
11011
11100
11101
11110
11111
01x00
01x01
01x10
01x11
(Eq. 3)
(Eq. 4)
AC_A(0)
AC_A(2)
AC_A(4)
AC_A(6)
AC_A(0)
REF1
V
INP
= AC_R(1)-AC_R(0) or V
REF
respectively as:
AC_A(1)
AC_A(3)
AC_A(5)
AC_A(7)
AC_A(0)
AC_A(1)
AC_A(2)
AC_A(3)
AC_A(4)
AC_A(5)
AC_A(6)
AC_A(7)
V
INN
XE8805/05A
www.semtech.com
REFP
and V
REF2
IN1
REFN
=
=
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