MICRF505BML TR Micrel Inc, MICRF505BML TR Datasheet - Page 14

• Manufacturer Part Number: MICRF505BML TR
• Manufacturer: Micrel Inc

Specifications of MICRF505BML TR

• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Modulation Type: FSK
• Lead Free Status / Rohs Status: Not Compliant

Programming summary
October 2006
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Use CS, SCLK, and IO to get access to the
control registers in MICRF505.
SCLK is user-controlled.
Write to the MICRF505 at positive edges
(MICRF505 reads at negative edges).
Read from the MICRF505 at negative edges
(MICRF505 writes at positive edges)
After power-on: Write to the complete set of
control registers.
Address field is 7 bits long. Enter msb first.
R/W bit is 1 bit long (“1” for read, “0” for
write)
Address and R/W bit together make 1 octet
All control registers are 8 bits long.
Enter/read msb in every octet first.
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Always write 8 bits to/read 8 bits from a
control register. This is the case for registers
with less than 8 used programming bits as
well.
Writing: Bring CS high, write address and
R/W bit followed by the new values to fill into
the addressed control register(s) and bring
CS low for loading, i.e. activation of the new
control register values (“load_en” = 1).
Reading: Bring CS high, write address and
R/W bit, set IO as an input, read present
contents of the addressed control
register(s), bring CS low and set IO an
output.
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