U3741BM Datasheet, PDF (19/25 Pages) ATMEL Corporation – UHF ASK RECEIVER IC

U3741BM
Electrical Characteristics (continued)
All parameters refer to GND, T_amb = –40°C to +105°C, V_S = 4.5 V to 5.5 V, f₀ = 433.92 MHz and f₀ = 315 MHz,
unless otherwise specified. (V_S = 5 V, T_amb = 25°C)
Parameter
Test Condition
Receiving mode (continued)
Minimum
time period
between edges
at Pin DATA
(figure 17)
BR_Range0
BR_Range1
BR_Range2
BR_Range3
Maximum
low period at
DATA
(figure 18)
BR_Range0
BR_Range1
BR_Range2
BR_Range3
OFF com-
mand at Pin
ENABLE
(figure 20)
Configuration of the receiver
Frequency of
the reset
marker
(figure 21)
Programming
start pulse
(figure 19,
figure 22)
BR_Range0
BR_Range1
BR_Range2
BR_Range3
after POR
Programming
delay period
(figure 19,
figure 22)
Synchroni–
zation pulse
(figure 19,
figure 22)
Delay until of
the program
window starts
(figure 19,
figure 22)
Programming
window
(figure 19,
figure 22)
Time frame
of a bit
(figure 22)
Programming
pulse
(figure 19,
figure 22)
Equivalent
acknowledge
pulse: E_Ack
(figure 22)
Equivalent
time window
(figure 22)
OFF-bit
programming
window
(figure 19)
Symbol
6.76438 MHz Osc.
(MODE: 1)
Min. Typ. Max.
4.90625 MHz Osc.
(MODE: 0)
Min. Typ. Max.
Variable Oscillator
Unit
Min.
Typ.
Max.
T_{DATA_min}
tmin1
149
147
tmin2
182
179
tmin1
75
73
tmin2
91
90
tmin1
37.3
36.7
tmin2
45.5
44.8
tmin1
18.6
18.3
tmin2
22.8
22.4
9 × T_XClk
µs
11 × T_XCl
µs
9 × T_XClk
µs
11 × T_XClk
µs
9 × T_XClk
µs
11 × T_XClk
µs
9 × T_XClk
µs
11 × T_XClk
µs
T_{DATA_L_}
max
2169
1085
542
271
2136
1068
534
267
131 × T_XClk
µs
131 × T_XClk
µs
131 × T_XClk
µs
131 × T_XClk
µs
t_Doze
3.1
3.05
1.5 × T_Clk
µs
f_RM
117.9
119.8
Hz
1
4096 T_Clk
t1
2188
1104
561
290
11656
t2
795
3176
3176
3176
3176
798
2155
1087
553
286
11479
783
3128
3128
3128
3128
786
1057 × T_Clk
533 × T_Clk
271 × T_Clk
140 × T_Clk
5632 × T_Clk
384.5 ×
T_Clk
1535 × T_Clk µs
1535 × T_Clk
1535 × T_Clk
1535 × T_Clk
385.5 ×
µs
T_Clk
t3
265
261
128 × T_Clk
µs
t4
131
129
63.5 × T_Clk
µs
t5
530
522
256 × T_Clk
µs
t6
1060
1044
512 × T_Clk
µs
t7
133
529 131
521
64 × T_Clk
256 × T_Clk µs
t8
265
261
128 × T_Clk
µs
t9
534
526
t10
930
916
258 × T_Clk
µs
449.5 ×
µs
T_Clk
Rev. A1, 15-Oct-98
Preliminary Information
19 (25)