The SP2-433-160 is a highly integrated intelligent transceiver module, which enable a radio network/link.


The SP2-433-160 is a highly integrated intelligent transceiver module, which enable a radio network/link to be simply implemented between a number of digital devices.

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Typical features

  • SAW controlled FM transmitter and superhet receiver
  • Reliable 50m in-building range, 200m open ground
  • Complies with ETSI EN300 220-3 regulations
  • Complies with ETSI EN 301 489-3 regulations
  • Single 5V supply @ < 20mA
  • 160kbps half duplex
  • Free format packets of 1 – 60 bytes
  • Packet framing and error checking are user transparent
  • Collision avoidance (Listen Before Transmit)
  • Direct interface to 5V CMOS logic
  • Power save mode


On receipt of a packet downloaded by the Host, the SP2 will append to the packet: Preamble, start byte and a error check code. The packet is then coded
for security and mark:space balance and transmitted through the BIM2 Transceiver as a 160kbps synchronous stream. One of four methods of collision
avoidance (Listen Before TX) may be user selected.

When not in transmit mode, the SP2 continuously searches the radio noise for valid preamble. On detection of preamble, the SP2 synchronies to the incoming
data stream, decodes the data and validates the check sum. The Host is then signaled that a valid packet is waiting to be unloaded. The format of the
packet is entirely of the users determination except the 1st byte (the Control Byte) which must specify the packet type (control or data) and the packet
size. A valid received packet is presented back to the host in exactly the same form as it was given.

To preserve versatility, the SP2 does not generate routing information (i.e. source/ destination addresses)nor does it handshake packets. These network
specific functions left for the Host to perform.

Additional features of the SP2 include extensive diagnostic/debug functions for evaluation and debugging of the radio and host driver software, a built
in self test function and a sleep mode / wake-up mechanism which may be programmed to reduce the average current to less than 100?A. The operating
parameters are fully programmable by the host and held in EEPROM, the host may also use the EEPROM as a general purpose nonvolatile store for addresses
, routing information etc.

Downloads & Datasheets

  1. Full Specs PDF