ATA5812-PLQ Atmel, ATA5812-PLQ Datasheet - Page 25

• Manufacturer Part Number: ATA5812-PLQ
• Description: IC TXRX UHF ASK/FSK 1CH 48-QFN
• Manufacturer: Atmel

Specifications of ATA5812-PLQ

• Frequency: 315MHz
• Data Rate - Maximum: 20kbps
• Modulation Or Protocol: ASK, FSK
• Applications: Access Control, AMR, RKE
• Sensitivity: -116dBm
• Voltage - Supply: 2.4 V ~ 3.6 V or 4.4 V ~ 6 V
• Current - Receiving: 10.5mA
• Current - Transmitting: 10.5mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 48-VQFN Exposed Pad, 48-HVQFN, 48-SQFN, 48-DHVQFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Memory Size: -
• Other names: ATA5812-PLQTR

Figure 6-2.
Table 6-1.
4689F–RKE–08/06
Frequency (MHz)
433.92
868.3
315.0
XTO Block Diagram
Calculation of f
In IDLE mode and during Sleep mode (RX_Polling)
8 pF
S1
433_N868
AVCC
AVCC
Pin 6
GND
XTAL1
the switches S1 and S2 are open.
10 pF
To find the right values used in the control registers 2 and 3 (see
Table 9-10 on page
determine the right content the frequency at pin CLK as well as the output frequency at RF_OUT
in ASK mode can be measured, than the FREQ value can be calculated according to
so that f
RF
C
L1
RF
CREG1
Bit(4)
is exactly the desired radio frequency
XTAL2
FS
0
0
1
C
L2
10 pF
f
36) the relationship between f
13.25311
13.41191
12.73193
XTO
(MHz)
8 pF
S2
f
XTO
f
f
f
XTO
XTO
XTO
Baud1
f
Amplitude
RF
detector
Divider
Divider
Divider
Baud0
32 5
64 5
24 5
/16
/16
= f
/3
/1
/2
/4
/8
TX_ASK
XLim
+
+
+
FREQ
--------------------------------- -
FREQ
--------------------------------- -
FREQ
--------------------------------- -
CLK_ON
(control
register 3)
= f
16384
16384
16384
XTO
RX
+
+
+
CLK
20,5
20,5
20,5
and the f
f
f
DCLK
XDCLK
&
VSOUT_OK
(from power supply)
ATA5811/ATA5812
(to reset logic)
f
f
f
RF
RF
RF
XTO_OK
DVCC_OK
(from power supply)
RF
f
– 16.17 kHz
– 16.37 kHz
– 15.54 kHz
TX_FSK_L
Table 9-7 on page 36
is shown in
f
f
f
RF
RF
RF
Table
f
+ 16.17 kHz
+ 16.37 kHz
+ 15.54 kHz
TX_FSK_H
Table 6-1
6-1. To
and
25