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PDF XE8802 Data sheet ( Hoja de datos )
| Número de pieza | XE8802 | |
| Descripción | Sensing Machine Data Acquisition MCU | |
| Fabricantes | Semtech Corporation | |
| Logotipo |  |
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XE8802 Sensing Machine Data Acquisition MCU
with ZoomingADC™ and LCD driver
XE8802 Sensing Machine
Data Acquisition SoC with 16+10 bit ZoomingADC™
Embedded RISC controller and LCD driver
General Description
The XE8802 includes a high resolution acquisition
path with the 16+10 bits ZoomingADC™ and an
LCD driver for up to 120 segments. The LCD lines
can be used as additional I/Os.
The embedded core of the XE8802 is an ultra
low-power low-voltage microcontroller unit (MCU)
with a strict 1 instruction per clock processing and
branch speed, allowing for a sustained 4MIPS at
1200µA under 2.4 to 5.5 V.
The XE8802 is available with on chip ROM or
Multiple-Time-Programmable (MTP) program
memory.
Applications
• Portable, battery operated instruments
• Medical portable instrument
• Remote control
• HVAC control
• Metering
• Sports watches, wrist instruments
Key product Features
• Low-power, high resolution ZoomingADC
• 16-bits sigma-delta type ADC
• 0.5 to 1000 gain with offset cancellation
• up to 13 inputs multiplexer, 8 dedicated inputs
• 4 low power comparators
• Low-voltage low-power controller operation
• 2 or 4 MIPS max, 2.4 to 5.5 V operation
• 300µA per 1MIPS over full voltage range
• 7MIPS or 1.2V operation in ROM
• Hardware MULT
• up to 22kByte (8 kInstruction) MTP
• 1032Byte RAM data memory
• RC and crystal oscillators
• 5 reset, 22 interrupt, 8 event sources
• 36 I/O lines, hardware UART and SPI
• 120 segments LCD driver,
can be used as 32 extra I/O lines
• 100 years MTP Flash retention at 55°C
Ordering Information
Product
Temperature range
XE8802MI000
-40°C to 85 °C
XE8802MI035LF -40°C to 85 °C
Memory type
MTP
MTP
Package
die
LQFP100
Rev 1 January 2006
www.semtech.com
1 page  
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XE8802 Sensing Machine Data Acquisition MCU
with ZoomingADC™ and LCD driver
NFASTREAD
VPP
INSTRUCTION MEMORY
DATA
MEMORY
VBAT
VSS
NRESET
XIN
XOUT
VREG
TEST
PB(7:0)
CPU
COOLRISC816
8X8 MULTIPLIER
16 CPU REGISTERS
B
U
S
C
O
N
T
R
O
L
L
E
R
RESET BLOCK
WD POR
RC
XTAL
VREG
CLOCK
GENERATION/
POWER
MANAGEMENT
TEST CONTROLLER
8 DATA REGISTERS
IRQ HANDLING
EVN HANDLING
PORT B
address
control
datain
dataout
reset
control
clocks
test
control
irq
evn
PORT A
PORT D1
PORT D2
LCD Driver
VGEN
USRT
UART
COUNTERS
TIMERS
PWM
PA(7:0)
PD1(7:0)
PD2(7:0)
LCD_IO(31:0)
LCD_COM(1:0)
VGEN_Vx(4:0)
VMULT
AC_R(3:0)
AC_A(7:0)
SPI(3:0)
ACQUISITION CHAIN
VMULT
(ZoomingADC)
SPI
VLD
CMPD
Figure 1-1. Block schematic of the XE8802 circuit.
The UART (universal asynchronous receiver/transmitter) contains a full hardware implementation of the
asynchronous serial link.
© Semtech 2006
www.semtech.com
1-3
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XE8802 Sensing Machine Data Acquisition MCU
with ZoomingADC™ and LCD driver
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
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
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.
Pin Function
number
I/O configuration
1
2
3
4
5
61
72
83
94
10 5
11 6
12 7
13 8
14 9
15 10
16 11
PD2(3)
PD2(4)
PD2(5)
PD2(6)
PD2(7)
NRESET
TEST
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_R(1)
© Semtech 2006
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1-9
www.semtech.com
11 Page | ||
| Páginas | Total 70 Páginas | |
| PDF Descargar | [ Datasheet XE8802.PDF ] | |
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