XE8802MI035LF Semtech, XE8802MI035LF Datasheet - Page 120
XE8802MI035LF
Manufacturer Part Number
XE8802MI035LF
Description
IC DAS 16BIT FLASH 8K 100-LQFP
Manufacturer
Semtech
Datasheet
1.XE8802MI035LF.pdf
(193 pages)
Specifications of XE8802MI035LF
Applications
Sensing Machine
Core Processor
RISC
Program Memory Type
FLASH (22 kB)
Controller Series
XE8000
Ram Size
1K x 8
Interface
SPI, UART
Number Of I /o
36
Voltage - Supply
2.4 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
100-LQFP
For Use With
XE8000MP - PROG BOARD AND PROSTART2 CARD
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Part Number
Manufacturer
Quantity
Price
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Part Number:
XE8802MI035LF
Manufacturer:
TI
Quantity:
8 700
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Similarly, the reference voltage is chosen among two differential channels (V
AC_R(3)-AC_R(2)) as shown in Table 17-12. The selection bit is VMUX. The reference inputs V
(common-mode) can be up to the power supply range.
17.6
As seen in Figure 17-1, the zooming function is implemented with three programmable gain amplifiers (PGA).
These are:
•
•
•
All gain and offset settings are realized with ratios of capacitors. The user has control over each PGA activation
and gain, as well as the offset of stages 2 and 3. These functions are examined hereafter.
© Semtech 2006
(RegAcCfg5[5:1])
PGA1: coarse gain tuning
PGA2: medium gain and offset tuning
PGA3: fine gain and offset tuning
Programmable Gain Amplifiers
AMUX[4:0]
00x00
00x01
00x10
00x11
10000
10001
10010
10011
10100
10101
10110
10111
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
(RegAcCfg5[0])
INP
Table 17-12. Analog Reference input selection
VMUX
ENABLE[3:0]
AC_A(0)
AC_A(2)
AC_A(4)
AC_A(6)
AC_A(0)
0
1
Table 17-11. Analog input selection
V
Table 17-13. ADC & PGA enabling
XE8802 Sensing Machine Data Acquisition MCU
INN
xxx0
xxx1
xx0x
xx1x
x0xx
x1xx
0xxx
1xxx
AC_R(1)
AC_R(3)
(RegAcCfg5[5:1])
V
17-8
REFP
AMUX[4:0]
with ZoomingADC™ and LCD driver
01x00
01x01
01x10
01x11
11000
11001
11010
11011
11100
11101
11110
11111
PGA1 disabled
PGA2 disabled
PGA3 disabled
PGA1 enabled
PGA2 enabled
PGA3 enabled
ADC disabled
ADC enabled
AC_R(0)
AC_R(2)
Block
V
REFN
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
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
www.semtech.com
REFP
and V
REF2
REFN
=
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