ATA5761 ATMEL Corporation, ATA5761 Datasheet - Page 20

• Manufacturer Part Number: ATA5761
• Description: UHF Ask/fsk Receiver
• Manufacturer: ATMEL Corporation

20
ATA5760/ATA5761
Figure 9-4.
The delay of the data clock is calculated as follows: t
t
depends on the capacitive load C
falling edge, t
on page 21
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
Figure 9-5.
DATA_CLK
Dem_out
Data_out (DATA)
Delay1
is the delay between the internal signals Data_Out and Data_In. For the rising edge, t
and
Delay1
Output of the Data Clock After a Successful Bit Check
Timing Characteristic of the Data Clock (Rising Edge on Pin DATA)
Serial bi-directional
data line
Data_In
DATA_CLK
Data_Out
Figure 13-2 on page
depends additionally on the external voltage V
'1'
Receiving mode,
bit check active
Bit check ok
'1'
V
V
IH
II
= 0.35
= 0.65
L
'1'
at pin DATA and the external pull-up resistor R
V
V
V
S
X
S
28). When the level of Data_In is equal to the level of
'1'
t
Delay1
t
Delay
'1'
t
Delay2
t
Data
P_Data_Clk
Delay
Start bit
'0'
= t
Receiving mode,
data clock control
logic active
Delay1
Delay2
'1'
“Data Interface” on page
.
+ t
X
'1'
Delay2
(see
Figure
'0'
'1'
9-5,
4896D–RKE–08/08
pup
Figure 9-6
'0'
. For the
29).
Delay1