micrf405 Micrel Semiconductor, micrf405 Datasheet - Page 17

• Manufacturer Part Number: micrf405
• Description: Micrf405 290mhz To 980mhz Ism Band Ask/fsk Transmitter
• Manufacturer: Micrel Semiconductor

April 2006
Programming Summary
Micrel
• Use SEN, SCK, and SIO to get access to the
• SCK is user-controlled.
• Write to the MICRF405 on positive edges
• Read from the MICRF405 on negative 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.
control registers in MICRF405.
(MICRF405 reads on negative edges).
(MICRF405 writes on positive edges)
Figure 7. Sequence of a Typical Packet Transfer.
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• Always write 8 bits to/read 8 bits from a control
• Writing: Bring SEN low, write address and R/W
register. This is the case for registers with less
than 8 used bits as well.
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).
MICRF405
[phone]
M9999-041906