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RPC-UHF Datasheet

  • RPC-UHF

  • Radio Packet Controller

  • 28頁

  • RADIOMETRIX

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Radiometrix
Issue 4, 25 July 2001
RPC-UHF
Radio Packet Controller
Modules: RPC-418-40: IC+BiM, UK version
RPC-433-40: IC+BiM, Euro version
IC鈥檚:
RPC-000-DIL:
RPC-000-SO:
18 pin DIL IC
18 pin SO IC
The
RPC-418-40
and
RPC-433-40
are
intelligent transceiver modules which enable
a radio network/link to be simply implemented
between a number of digital devices. The
module combines a UHF radio transceiver
and a 40kbit/s packet controller.
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SAW controlled FM transmitter and superhet receiver
Reliable 30 meter in-building range, 120m open ground
Built-in self-test / diagnostics / status LED鈥檚
Complies with ETSi 300-220 regulations
Single 5V supply @ < 20mA
40kbit/s half duplex
Free format packets of 1 - 27 bytes
Packet framing and error checking are user transparent
Collision avoidance (listen before transmit)
Direct interface to 5V CMOS logic
Power save mode
The RPC-module
I
NTRODUCTION
The RPC is a self-contained plug-on radio port which requires only a simple antenna, 5V supply and a
byte-wide I/O port on a host microcontroller (or bi-directional PC port).
The module provides all the RF circuits and processor intensive low level packet formatting and packet
recovery functions required to inter-connect an number of microcontrollers in a radio network.
A data packet of 1 to 27 bytes downloaded by a Host microcontroller into the RPC's packet buffer is
transmitted by the RPC鈥檚 transceiver and will "appear" in the receive buffer of all the RPC's within
radio range.
A data packet received by the RPC鈥檚 transceiver is decoded, stored in a packet buffer and the Host
microcontroller signalled that a valid packet is waiting to be uploaded.
figure 1: RPC + Host
碌
-controller
Radiometrix Ltd, RPC
page
1

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