ATA5830N-PNQW Atmel, ATA5830N-PNQW Datasheet - Page 9

• Manufacturer Part Number: ATA5830N-PNQW
• Manufacturer: Atmel

Specifications of ATA5830N-PNQW

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Figure 1-4.
9208DS–RKE–07/11
Typical 5V Application Circuit with External Microcontroller
SAW
Figure 1-3
from a 3V lithium cell. The Atmel
Ports PC1..PC5 are pulled to ground level and therefore waking up the circuit. The NPWRON
Ports PC1..PC5 have internal 50k pull-up resistors and can be left open if not used.
Application software within the 6KB Flash is used to control the Atmel ATA5830 together with
firmware in the 24KB ROM. The RF and decoupling circuitry is similar to
In this application, an LED is connected to PB7 (alternatively, an additional wake-up button
can be used on PB7 instead of an LED). An LED can also be connected to PB4. However,
note the additional pull-down resistor connected in parallel that is needed to prevent trans-
verse currents in OFFMode. This special case applies to PB4 because of its active input
characteristics (PWRON).
Figure 1-4
running from a 5V voltage regulator. In contrast to the 3V application with external microcon-
troller, the pin PB4 (PWRON) is directly connected to VS and the Atmel
IDLEMode after power on. In this configuration the Atmel ATA5830 can work autonomously
while the microcontroller stays powered down to achieve low current consumption while being
sensitive to RF telegrams.
shows a stand alone key fob application circuit for 315MHz or 433.92MHz running
shows a typical vehicle side application circuit with an external host microcontroller
1
2
3
4
5
6
7
8
RFIN_LB
RFIN_HB
SPDT_RX
SPDT_ANT
ANT_TUNE
SPDT_TX
RF_OUT
VS_PA
ATEST
32
_IO1
TEST
9
_EN
31
10
ATEST
_IO2
30
11
ATA5830
12
29
Atmel
13
28
®
27
ATA5830 stays in OFFMode until one of the NPWRON
14
26
15
VS
Atmel ATA5830/ATA5830N
25
VS = 5V
16
DGND
DVCC
PC5
PC4
PC3
PB2
PB1
PB0
24
23
22
21
20
19
18
17
IRQ
NSS
MISO
MOSI
SCK
CLK_IN
VDD
®
Figure 1-1 on page
Microcontroller
ATA5830 enters the
7.
9