ATA5771-DK1 Atmel, ATA5771-DK1 Datasheet - Page 47
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ATA5771-DK1
Manufacturer Part Number
ATA5771-DK1
Description
BOARD XMITTER FOR ATA5771 868MHZ
Manufacturer
Atmel
Type
Transmitterr
Specifications of ATA5771-DK1
Frequency
868MHz
Maximum Frequency
868 MHz
Supply Voltage (max)
4 V
Supply Voltage (min)
2 V
Supply Current
8.5 mA
Product
RF Development Tools
For Use With/related Products
ATA5771
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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4.11.1.3
9137E–RKE–12/10
External Reset
Figure 4-15. MCU Start-up, RESET Extended Externally
Table 4-15.
Note:
An External Reset is generated by a low level on the RESET pin if enabled. Reset pulses lon-
ger than the minimum pulse width (see
on page
guaranteed to generate a reset. When the applied signal reaches the Reset Threshold Voltage
– V
t
TOUT
Symbol
V
V
V
V
V
POT
PORMAX
PORMIN
CCRR
RST
RST
INTERNAL
TIME-OUT
– has expired.
RESET
RESET
– on its positive edge, the delay counter starts the MCU after the Time-out period –
1. Before rising, the supply has to be between
V
190) will generate a reset, even if the clock is not running. Shorter pulses are not
CC
Parameter
Power-on Reset Threshold Voltage (rising)
Power-on Reset Threshold Voltage (falling)
VCC Max. start voltage to ensure internal
Power-on Reset signal
VCC Min. start voltage to ensure internal
Power-on Reset signal
VCC Rise Rate to ensure Power-on Reset
Power On Reset Specifications
RESET Pin Threshold Voltage
V
POT
Section 8.3.4 “System and Reset Characterizations”
V
RST
t
TOUT
V
PORMIN
Atmel ATA5771/73/74
(1)
and V
0.01
Min
-0.1
V
1.1
0.8
0.1
CC
PORMAX
Typ
1.4
1.3
to ensure a Reset.
0.9V
Max
1.7
1.6
0.4
CC
Units
V/ms
V
V
V
V
V
47
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