XE8802MI035LF Semtech, XE8802MI035LF Datasheet - Page 45
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
Company:
Part Number:
XE8802MI035LF
Manufacturer:
TI
Quantity:
8 700
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Another reset source is the bit Sleep in the RegSysReset register. This source is fully controlled by software and is
only used during the sleep mode.
Four internal reset signals are generated from these sources and distributed through the system:
Table 6-5 shows a summary of the dependency of the internal reset signals on the various reset sources.
6.5
6.5.1
The power on reset (POR) monitors the external supply voltage. It activates a reset on a rising edge of this supply
voltage. The reset is inactivated only if the internal voltage regulator has started up. The POR block performs no
precise voltage level detection.
6.5.2
Applying a low input state on the NRESET pin can activate the reset.
6.5.3
Port A (if present in the product) can generate a reset signal. See the description of the Port A for further
information.
6.5.4
The Watchdog will generate a reset if the
watchdog is not cleared in time by the processor. See chapter 6.8 describing the watchdog for further information.
© Semtech 2006
In all the tables describing the different registers, the reset source is indicated.
Asserted
reset source
POR
NRESET pin
PortA input
Watchdog
BusError
Sleep
Reset source description
• nresetcold:
• nresetglobal: is asserted when nresetcold or any other enabled reset source is active
• nresetsleep: is asserted when the circuit is in sleep mode
• nresetpconf: is asserted when nresetglobal is active and if the
register is set. This reset is generally used in the different ports. It allows to maintain the port configuration
unchanged while the rest of the circuit is reset.
Power On Reset
NRESET pin
Programmable Port A input combination
Watchdog reset
nresetglobal
Asserted
Asserted
Asserted
Asserted
Asserted
is asserted on POR or by the NRESET pin
-
Table 6-5. Internal reset assertion as a function of the reset source.
EnResetPConf
is set to 0
Asserted
Asserted
when
XE8802 Sensing Machine Data Acquisition MCU
-
-
-
-
EnResetWD
nresetpconf
Internal reset signals
EnRestPConf
6-4
bit in the RegSysCtrl register has been set and if the
is set to 1
Asserted
Asserted
Asserted
Asserted
Asserted
when
with ZoomingADC™ and LCD driver
-
nresetsleep
Asserted
Asserted
Asserted
EnResetPConf bit in the
-
-
-
nresetcold
Asserted
Asserted
-
-
-
-
www.semtech.com
RegSysCtrl
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