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| U3742BM Datasheet, PDF (26/32 Pages) ATMEL Corporation – UHF ASK/FSK RECEIVER | |||
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Electrical Characteristics (Continued)
All parameters refer to GND, Tamb = -40°C to +105°C, VS = 4.5 V to 5.5 V, f0 = 433.92 MHz and f0 = 315 MHz, unless other-
wise specified. (VS = 5 V, Tamb = 25°C)
6.76438 Mhz Oscillator
(Mode 1)
4.90625 Mhz Oscillator
(Mode 0)
Variable Oscillator
Parameter Test Condition
Symbol Min.
Typ. Max. Min. Typ.
Max. Min.
Typ.
Max. Unit
Maximum low
period at DATA
(Figure 20)
BR_Range0
BR_Range1
BR_Range2
BR_Range3
TDATA_L_max
2169
1085
542
271
2136
1068
534
267
131 ´ TXClk
µs
131 ´ TXClk
µs
131 ´ TXClk
µs
131 ´ TXClk
µs
OFF
command at
pin ENABLE
tDoze
3.1
3.05
1.5 ´
TClk
µs
(Figure 22)
Configuration of the Receiver
Frequency of
the reset
marker
(Figure 23)
fRM
117.9
119.8
----------------1-----------------
4096 ´ TCLK
Hz
BR_Range0
BR_Range1
Programming
start pulse
(Figure 21,
Figure 24)
BR_Range2
BR_Range3
after POR
2188
1104
561
t1
290
11656
3176 2155
3176 1087
3176 553
3176 286
11479
3128
3128
3128
3128
1057 ´
TClk
533 ´
TClk
271 ´
TClk
140 ´
TClk
5632 ´
TClk
1535 ´
TClk
1535 ´
TClk
1535 ´
TClk
µs
1535 ´
TClk
Programming
delay period
(Figure 21,
Figure 24)
Synchroni-
zation pulse
(Figure 21,
Figure 24)
Delay until the
program
window starts
(Figure 21,
Figure 24)
Programming
window
(Figure 21,
Figure 24)
Time frame
of a bit
(Figure 24)
Programming
pulse (Figure
21, Figure 24)
t2
795
798 783
786
384.5 ´
TClk
385.5 ´
TClk
µs
t3
265
261
128 ´ TClk
µs
t4
131
129
63.5 ´ TClk
µs
t5
530
522
256 ´ TClk
µs
t6
1060
1044
512 ´ TClk
µs
t7
133
529 131
521
64 ´
TClk
256 ´
TClk
µs
26 U3742BM
4735AâRKEâ11/03
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