RFM73 Datasheet, PDF (14/27 Pages) List of Unclassifed Manufacturers – Low Power High Performance 2.4 GHz GFSK Transceiver

RFM73 V2.0
Cn: SPI command bit
Sn: STATUS register bit
Dn: Data Bit (LSB byte to MSB byte, MSB bit in each byte first)
Note: The SPI timing is for bank 0 and register 9 to 14 at bank 1. For register 0 to 8 at bank 1, the byte
order is inversed that the MSB byte is R/W before LSB byte.
Figure 7 SPI NOP timing diagram
Symbol
Tdc
Tdh
Tcsd
Tcd
Tcl
Tch
Fsck
Tr,Tf
Tcc
Tcch
Tcwh
Tcdz
Parameters
Min
Max
Data to SCK Setup
10
SCK to Data Hold
20
CSN to Data Valid
38
SCK to Data Valid
55
SCK Low Time
40
SCK High Time
40
SCK Frequency
0
8
SCK Rise and Fall
100
CSN to SCK Setup
2
SCK to CSN Hold
2
CSN Inactive time
50
CSN to Output High Z
38
Table 3 SPI timing parameter
Units
ns
ns
ns
ns
ns
ns
MHz
ns
ns
ns
ns
ns
Page 14 of 27
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