U3741bm, Electrical characteristics (continued) – Rainbow Electronics U3741BM User Manual
Page 24
24
U3741BM
4662B–RKE–10/04
Receiving Mode
Intermediate
frequency
MODE=0 (USA)
MODE=1 (Europe)
f
IF
1.0
1.0
f
XTO
×
64/314
f
XTO
×
64/432.92
MHz
MHz
Baud rate
range
BR_Range0
BR_Range1
BR_Range2
BR_Range3
BR_Range
1.0
1.8
3.2
5.6
1.8
3.2
5.6
10.0
1.0
1.8
3.2
5.6
1.8
3.2
5.6
10.0
BR_Range0
×
2 µs/T
Clk
BR_Range1
×
2 µs/T
Clk
BR_Range2
×
2 µs/T
Clk
BR_Range3
×
2 µs/T
Clk
kBaud
kBaud
kBaud
kBaud
Minimum time
period
between
edges at
pin DATA
BR_Range0
BR_Range1
BR_Range2
BR_Range3
T
DATA_min
tmin1
tmin2
tmin1
tmin2
tmin1
tmin2
tmin1
tmin2
149
182
75
91
37.3
45.5
18.6
22.8
147
179
73
90
36.7
44.8
18.3
22.4
9
×
T
XClk
11
×
T
XCl
9
×
T
XClk
11
×
T
XClk
9
×
T
XClk
11
×
T
XClk
9
×
T
XClk
11
×
T
XClk
µs
µs
µs
µs
µs
µs
µs
µs
Maximum low
period at DATA
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
t
Doze
3.1
3.05
1.5 ¥
T
Clk
µs
Configuration of the Receiver
Frequency of
the reset
marker
f
RM
117.9
119.8
Hz
Programming
start pulse
(Figure 17,
Figure 20)
BR_Range0
BR_Range1
BR_Range2
BR_Range3
after POR
t1
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 17,
Figure 20)
t2
795
798
783
786
384.5
×
T
Clk
385.5
×
T
Clk
µs
Synchroni-
zation pulse
(Figure 17,
Figure 20)
t3
265
261
128
×
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 otherwise specified.
(V
S
= 5 V, T
amb
= 25°C)
Parameter
Test Condition
Symbol
6.76438-Mhz Osc.
(Mode 1)
4.90625-Mhz Osc.
(Mode 0)
Variable Oscillator
Unit
Min.
Typ.
Max.
Min.
Typ.
Max.
Min.
Typ.
Max.
1
4096
T
CLK
Ч
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