ARF7429B ADEUNIS, ARF7429B Datasheet - Page 10

• Manufacturer Part Number: ARF7429B
• Description: MODULE, ARF54, US
• Manufacturer: ADEUNIS
• Type: Modem Moduler

Specifications of ARF7429B

• Modulation Type: FM
• Data Rate Max: 57.6Kbps
• Sensitivity: -108dBm
• Supply Voltage Range: 3V To 3.6V
• Supply Current: 700mA
• Features: Two-way Digital Link Over 6000m, Programmable Up To 57.6kbps Rough Data Rate
• Rohs Compliant: Yes

S219
Tde
min
asserted HIGH and then the data extracted from the radio frame are sent to
the module TXD line and therefore to the RS485 differential bus. When the
last character has been transmitted over the RS485 differential bus, the lines
are asserted LOW.
Ref. 08-07-V6-lmn
DE/RE
•
•
DE/RE
Figure 3: DE/RE timing when a reply is sent back on the TXD line
TXD
RXD
TXD
Figure 2: DE/RE timing when data are sent over the serial link
•
20
µs
0
Thold : minimum = 1 µs
Tde : set according to the S219 register value (see table hereafter)
In command mode, when a reply is sent back (on the TXD line)
according to the following DE/RE timing :
40µs
1
CMD
≥ 100µs
60
µs
2
Tde
≥ 700 µS
80
µs
3
100
µs
n DATA bytes
4
110
µs
5
REPLY
250
10
µs
480
20
µs
A
Thold
RF54
≥ 100µs
900
40
µs
User Guide
1.3
ms
60
p. 8
1.7
ms
80
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