ATA3742P3-TGSY Atmel, ATA3742P3-TGSY Datasheet - Page 23

• Manufacturer Part Number: ATA3742P3-TGSY
• Description: IC UHF ASK/FSK RECEIVER 20SOIC
• Manufacturer: Atmel

Specifications of ATA3742P3-TGSY

• Frequency: 310MHz ~ 440MHz
• Sensitivity: -108dBm
• Data Rate - Maximum: 10 kBaud
• Modulation Or Protocol: ASK, FSK
• Applications: RKE, TPM, Security Systems
• Current - Receiving: 7mA
• 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

Table 5-9.
5.4.1
4900B–RKE–11/07
0
0
0
0
1
1
1
.
.
.
.
.
.
Conservation of the Register Information
Lim_max < 12 is not applicable
0
0
0
1
1
1
1
.
.
.
.
.
.
Effect of the Configuration Word Lim_max
1
1
1
1
1
1
1
.
.
.
.
.
.
Lim_max
The ATA3742 has an integrated power-on reset (POR) and brown-out detection circuitry to pro-
vide a mechanism to preserve the RAM register information.
According to
threshold voltage V
ters in that condition. Once V
period t
To indicate that condition, the receiver displays a reset marker (RM) at pin DATA after a reset.
The RM is represented by the fixed frequency f
an “L” pulse t
By means of that mechanism, the receiver cannot lose its register information without communi-
cating that condition via the reset marker RM.
• f
• If the receiver is set back to polling mode via pin DATA, RM cannot be cancelled by accident
misinterpreted by the connected microcontroller.
if t
Register” on page
RM
1
1
1
1
0
1
1
1
.
.
.
.
.
.
is lower than the lowest feasible frequency of a data signal. This means, RM cannot be
is applied according to the proposal in the Section
Rst
. A POR is also generated when the supply voltage of the receiver is turned on.
Figure
1
at pin DATA. The RM implies the following characteristics:
0
0
1
0
0
1
1
.
.
.
.
.
.
ThReset
5-13, a power-on reset is generated if the supply voltage V
24.
0
1
0
0
1
0
1
. The default parameters are programmed into the configuration regis-
.
.
.
.
.
.
S
exceeds V
(USA: T
ThReset
(T
Lim_max
Lim_max
RM
Upper Limit Value for Bit Check
, the POR is canceled after the minimum reset
at a 50% duty cycle. RM can be canceled via
= (Lim_max
= 375 µs, Europe: T
“Programming the Configuration
24 (Default)
12
13
14
61
62
63
.
.
.
.
.
.
–
1)
XLim
Lim_max
= 381 µs)
T
S
ATA3742
Clk
drops below the
)
23