Rainbow Electronics U3742BM - Manual (Page 26)

26
U3742BM
4735A–RKE–11/03
Maximum low
period at DATA
(Figure 20)
BR_Range0
BR_Range1
BR_Range2
BR_Range3
T
DATA_L_max
2169
1085
542
271
2136
1068
534
267
131 ´ T
XClk
131 ´ T
XClk
131 ´ T
XClk
131 ´ T
XClk
µs
µs
µs
µs
OFF
command at
pin ENABLE
(Figure 22)
t
Doze
3.1 3.05
1.5 ´
T
Clk
µs
Configuration of the Receiver
Frequency of
the reset
marker
(Figure 23)
f
RM
117.9 119.8 Hz
Programming
start pulse
(Figure 21,
Figure 24)
BR_Range0
BR_Range1
BR_Range2
BR_Range3
after POR
t
1
2188
1104
561
290
11656
3176
3176
3176
3176
2155
1087
553
286
11479
3128
3128
3128
3128
1057 ´
T
Clk
533 ´
T
Clk
271 ´
T
Clk
140 ´
T
Clk
5632 ´
T
Clk
1535 ´
T
Clk
1535 ´
T
Clk
1535 ´
T
Clk
1535 ´
T
Clk
µs
Programming
delay period
(Figure 21,
Figure 24)
t
2
795 798 783 786
384.5 ´
T
Clk
385.5 ´
T
Clk
µs
Synchroni-
zation pulse
(Figure 21,
Figure 24)
t
3
265 261 128 ´ T
Clk
µs
Delay until the
program
window starts
(Figure 21,
Figure 24)
t
4
131 129 63.5 ´ T
Clk
µs
Programming
window
(Figure 21,
Figure 24)
t
5
530 522 256 ´ T
Clk
µs
Time frame
of a bit
(Figure 24)
t
6
1060 1044 512 ´ T
Clk
µs
Programming
pulse (Figure
21, Figure 24)
t
7
133 529 131 521
64 ´
T
Clk
256 ´
T
Clk
µs
Electrical Characteristics (Continued)
All parameters refer to GND, T
amb
= -40
°
C to +105
°
C, V
S
= 4.5 V to 5.5 V, f
0
= 433.92 MHz and f
0
= 315 MHz, unless other-
wise specified. (V
S
= 5 V, T
amb
= 25
°
C)
Parameter Test Condition Symbol
6.76438 Mhz Oscillator
(Mode 1)
4.90625 Mhz Oscillator
(Mode 0) Variable Oscillator
Unit Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
1
4096 T
CLK
´
---------------------------------