xe8802 Semtech Corporation, xe8802 Datasheet - Page 11
xe8802
Manufacturer Part Number
xe8802
Description
Data Acquisition Soc With 16+10 Bit Zoomingadc? Embedded Risc Controller And Lcd Driver
Manufacturer
Semtech Corporation
Datasheet
1.XE8802.pdf
(193 pages)
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1.4 Pin assignment
The table below gives a short description of the different pin assignments.
Pin
VBAT
VSS
VREG
VPP
NFASTREAD
NRESET
TEST
XIN/XOUT
PA(7:0)
PB(7:0)
PD1(7:0)
PD2(7:0)
SPI(3:0)
LCD_IO(29:0)
LCD_IO(31:30)
LCD_COM(1:0)
LCD_VR1/LCD_VR2
VGEN_Vx
AC_A(7:0)
AC_R(3:0)
VMULT
Table 1-3. Pin assignment
Table 1-4 gives a more detailed pin map for the different pins in the different packages. It also indicates the
possible I/O configuration of these pins. The indications in blue bold are the configuration at start-up. Please note
that in the LQFP-80 package several functions are routed to the same package pins. These pins are indicated in
red italic.
© Semtech 2006
Pin
number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
10
11
Function
NRESET
AC_R(1)
AC_A(0)
AC_A(1)
AC_A(2)
AC_A(3)
AC_A(4)
AC_A(5)
AC_A(6)
AC_A(7)
PD2(3)
PD2(4)
PD2(5)
PD2(6)
PD2(7)
TEST
Assignment
Positive power supply
Negative power supply
Connection for the mandatory external capacitor of the voltage regulator
High voltage supply for flash memory programming (NC in ROM versions)
Selects the maximal operation speed and the flash memory size (NC in ROM versions)
Resets the circuit when the voltage is low
Sets the pin to flash programming mode
Quartz crystal connections, also used for flash memory programming
Parallel input port A pins
Parallel I/O port B pins
Parallel I/O port D1 pins
Parallel I/O port D2 pins
Serial SPI port or general purpose I/O port pins
LCD segment driver or general purpose I/O port pins
LCD segment driver or LCD back plane driver or general purpose I/O port pins
LCD back plane driver pins
LCD supply voltage
LCD driver voltage generation pins
Acquisition chain input pins
Acquisition chain reference pins
Connection for external capacitor of the voltage multiplier
XE8802 Sensing Machine Data Acquisition MCU
1-9
I/O configuration
X
X
X
X
X
X
X
X
X
with ZoomingADC™ and LCD driver
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
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