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MICRF405 Datasheet(PDF) 17 Page - Micrel Semiconductor

Part # MICRF405
Description  290MHz-980MHz ISM Band ASK / FSK Transmitter
PDF  46 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MICRF405 Datasheet(HTML) 17 Page - Micrel Semiconductor

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Micrel
MICRF405
April 2006
17
M9999-041906
(408) 955-1690
Figure 7. Sequence of a Typical Packet Transfer.
Programming Summary
• Use SEN, SCK, and SIO to get access to the
control registers in MICRF405.
• SCK is user-controlled.
• Write to the MICRF405 on positive edges
(MICRF405 reads on negative edges).
• Read from the MICRF405 on negative edges
(MICRF405 writes on positive edges)
• Address field is 7 bits long. Enter MSB first.
• R/W bit is “1” for read and “0” for write.
• Address and R/W bit together make 1 octet
• Enter/read MSB in every octet first.
• Always write 8 bits to/read 8 bits from a control
register. This is the case for registers with less
than 8 used bits as well.
• Writing: Bring SEN low, write address and R/W
bit followed by the new values to fill into the
addressed control register(s) and bring SEN
high for loading, i.e. activation of the new control
register values (“Load_en” = 1).



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