ATA5743 ATMEL Corporation, ATA5743 Datasheet - Page 18

• Manufacturer Part Number: ATA5743
• Description: Ata5743 Uhf Ask/fsk Receiver
• Manufacturer: ATMEL Corporation

6.3.6
Figure 6-11. Timing Diagram of the OFF command via Pin DATA
Figure 6-12. Timing Diagram of the OFF command via Pin POLLING/_ON
18
IC_ACTIVE
Out1
(microcontroller)
Data_out (DATA)
Serial bi-directional
data line
ATA5743
Switching the Receiver Back to Sleep Mode
IC_ACTIVE
POLLING/_ON
Data_out (DATA)
Serial bi-directional
data line
X
The receiver can be set back to polling mode via pin DATA or via pin POLLING/_ON.
When using pin DATA, this pin must be pulled to Low by the connected microcontroller for
the period t1.
page
ited, but it is recommended not to exceed the specified value to prevent erasing the reset
marker. (see section
internal reset for the OPMODE and the LIMIT register will be generated if t1 exceeds the speci-
fied values. This item is explained in more detail in the section
page
during the register configuration. Only one sync pulse (t3) is issued.
The duration of the OFF command is determined by the sum of t1, t2 and t10. After the OFF
command the sleep time T
section
X
Receiving
mode
29). The minimum value of t1 depends on BR_Range. The maximum value for t1 is not lim-
24. Setting the receiver to sleep mode via DATA is achieved by programming bit 1 to be “1”
t1
“Data Interface” on page
Receiving mode
OFF command
X
X
Figure 6-11
t2
t
on2
t3
“Programming the Configuration Register” on page
(Start bit)
t4
Bit 1
("1")
Sleep mode
t
t10
t7
on3
t5
Sleep
illustrates the timing of the OFF command (see also
elapses. Note that the capacitive load at pin DATA is limited (see
30).
Start-up mode
Sleep mode
Bit-check mode
T
Sleep
Bit check ok
“Configuration of the Receiver” on
X
X
Receiving mode
28) Note also that an
Start-up mode
T
Start-up
Figure 6-26 on
4839B–RKE–08/05