ATA5771-DK1 Atmel, ATA5771-DK1 Datasheet - Page 47

• 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

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