ATA5773-DK1 Atmel, ATA5773-DK1 Datasheet - Page 46
ATA5773-DK1
Manufacturer Part Number
ATA5773-DK1
Description
BOARD XMITTER FOR ATA5773 315MHZ
Manufacturer
Atmel
Type
Transmitterr
Specifications of ATA5773-DK1
Frequency
315MHz
Maximum Frequency
315 MHz
Supply Voltage (max)
4 V
Supply Voltage (min)
2 V
Supply Current
9 mA
Product
RF Development Tools
For Use With/related Products
ATA5773
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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4.11.1.2
46
Atmel ATA5771/73/74
Power-on Reset
Figure 4-13. Reset Logic
A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection
level is defined in
is activated whenever V
the Start-up Reset, as well as to detect a failure in supply voltage.
A Power-on Reset (POR) circuit ensures that the device is reset from Power-on. Reaching the
Power-on Reset threshold voltage invokes the delay counter, which determines how long the
device is kept in RESET after V
delay, when V
Figure 4-14. MCU Start-up, RESET Tied to V
INTERNAL
V
TIME-OUT
BODLEVEL [1..0]
CC
RESET
RESET
V
CCRR
CC
decreases below the detection level.
Section 8.3.4 “System and Reset Characterizations” on page
Pull-up Resistor
FILTER
SPIKE
V
V
V
RST
CC
PORMA X
PORMIN
is below the detection level. The POR circuit can be used to trigger
t
TOUT
CKSEL[1:0]
CC
Power-on Reset
Reset Circuit
SUT[1:0]
Brown-out
Watchdog
Oscillator
Generator
rise. The RESET signal is activated again, without any
Circuit
Clock
CK
CC
Register (MCUSR)
MCU Status
DATA BUS
Delay Counters
TIMEOUT
190. The POR
9137E–RKE–12/10
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