ATA5743P3-TGQY Atmel, ATA5743P3-TGQY Datasheet - Page 21

• Manufacturer Part Number: ATA5743P3-TGQY
• Description: IC RCVR ASK/FSK 300KHZ 20SOIC
• Manufacturer: Atmel

Specifications of ATA5743P3-TGQY

• Frequency: 300MHz ~ 450MHz
• Sensitivity: -110dBm
• Data Rate - Maximum: 10 kBaud
• Modulation Or Protocol: ASK, FSK
• Applications: RKE, Telemetering, Security Technology
• Current - Receiving: 7.5mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 20-SOIC (0.300", 7.50mm Width)
• Operating Frequency (max): 450000kHz
• Operating Temperature (min): -40C
• Operating Temperature (max): 105C
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Lead Free Status / Rohs Status: Compliant

Figure 6-16. Data Clock Disappears Because of a Logical Error
Figure 6-17. Output of the Data Clock After a Successful Bit Check
4839B–RKE–08/05
Dem_out
Data_out (DATA)
DATA_CLK
Dem_out
Data_out (DATA)
DATA_CLK
The delay of the data clock is calculated as follows:
t
t
depends on the capacitive load C
falling edge, t
Figure 6-19 on page 22
level of Data_Out, the data clock is issued after an additional delay t
Note that the capacitive load at pin DATA is limited. If the maximum tolerated capacitive load at
pin DATA is exceeded, the data clock disappears (see section
Delay
Delay1
= t
is the delay between the internal signals Data_Out and Data_In. For the rising edge, t
Delay1
1
1
Receiving mode,
bit check active
Bit check ok
+ t
Delay1
1
1
Delay2
depends additionally on the external voltage V
Receiving mode,
data clock control
logic active
1
1
and
0
1
Figure 6-26 on page
L
1
1
at pin DATA and the external pull-up resistor R
Data
Start bit
Data
1
0
Logical error (Manchester code violation)
Receiving mode,
data clock control
logic active
?
1
29). When the level of Data_In is equal to the
0
1
Receiving mode,
bit check aktive
0
0
“Data Interface” on page
X
(see
1
1
Delay2
Figure 6-18 on page
.
0
0
ATA5743
pup
. For the
29).
Delay1
22,
21