ATA5428-PLQW80 Atmel, ATA5428-PLQW80 Datasheet - Page 37

• Manufacturer Part Number: ATA5428-PLQW80
• Description: RF Transceiver ASK/FSK Transceiver 434 and 868MHz
• Manufacturer: Atmel

Specifications of ATA5428-PLQW80

• Wireless Frequency: 226 KHz, 237 KHz
• Interface Type: 4-Wire SPI
• Noise Figure: 7 dB
• Output Power: 10 dBm
• Operating Supply Voltage: 2.4 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-48
• Maximum Data Rate: 20 Kbps
• Minimum Operating Temperature: - 40 C
• Modulation: ASK, FSK
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.2
4841D–WIRE–10/07
TX/RX Data Buffer
After the transceiver is turned on via pin PWR_ON = High, T1 = Low, T2 = Low, T3 = Low,
T4 = Low or T5 = Low or the voltage at pin VAUX V
are in the default state.
Figure 7-1.
The TX/RX data buffer is used to handle the data transfer during RX and TX operations.
BitChk
NFSK
FR12
MSB
ASK/
Baud
FR6
ST5
IR1
1
1
Register Structure
BitChk
Sleep
FR11
Baud
FR5
ST4
IR0
4
0
0
ATA5423/ATA5425/ATA5428/ATA5429
AVCC
FR10
Sleep
max5
Lim_
min5
Lim_
_EN
FR4
ST3
3
Sleep
max4
Lim_
min4
Lim_
FR3
FR9
ST2
FS
2
Sleep
max3
Lim_
min3
Lim_
FR2
FR8
ST1
1
-
Power_
OPM1 OPM0
Sleep
max2
Lim_
min2
Lim_
FR1
FR7
On
0
VSOUT
XSleep
max1
Low_
Lim_
min1
Lim_
_EN
FR0
Batt
VAUX
MODE
MODE
P_On
CLK_
max0
XLim
_Aux
Lim_
min0
Lim_
LSB
ON
T_
P_
> 3.5V (typically), the control registers
Control Register 1 (ADR 0)
Control Register 2 (ADR 1)
Control Register 3 (ADR 2)
Control Register 4 (ADR 3)
Control Register 5 (ADR 4)
Control Register 6 (ADR 5)
Status Register (ADR 8)
TX/RX Data Buffer:
16
8 Bit
37