mrf89xa Microchip Technology Inc., mrf89xa Datasheet - Page 111

• Manufacturer Part Number: mrf89xa
• Description: Ultra-low Power, Integrated Ism Band Sub-ghz Transceiver
• Manufacturer: Microchip Technology Inc.

TABLE 5-6:
5.2
TABLE 5-7:
© 2010 Microchip Technology Inc.
RFOP
PN
TXSP
TX2
TX3
TX4
TXn
FSKDEV
TSTWF
TSTWS
Note 1:
SPI Configure Clock Frequency
SPI Data Clock Frequency
Data Hold and Setup Time
SDI Setup Time for SPI Configure
SDI Setup Time for SPI Data
CSCON Low to SCK Rising Edge;
SCK Falling Edge to /CSCON High
CSDAT Low to SCK Rising Edge;
SCK Falling Edge to CSDAT High
CSCON Rising to Falling Edge
CSDAT Rising to Falling Edge
Note 1:
Symbol
2:
2:
3:
Timing Specification and Diagram
Guaranteed by design and characterization.
Transmitter in-circuit performance with RFM recommended SAW filter and crystal.
Typical Values: T
Negative current is defined as the current sourced by the pin.
On Pin 10 (OSC1) and 11 (OSC2), maximum voltages of 1.8V can be applied.
RF Output Power, Programmable
with 8 Steps of typ. 3 dB
Phase Noise
Transmitted Spurious
Second Harmonic
Third Harmonic
Fourth Harmonic
Harmonics above TX4
FSK Deviation
Transmitter Wake-up Time
Transmitter Wake-up Time
Parameter
TRANSMITTER AC CHARACTERISTICS
SPI TIMING SPECIFICATION
Description
A
= 25°C, V
DD
Min
250
312
500
625
500
625
—
—
= 3.3V, crystal frequency = 12.8 MHz, unless otherwise specified.
2
Min
±33
—
—
—
—
—
—
—
Preliminary
(1,2,3)
Typ
—
—
—
—
—
—
—
—
—
+12.5
-112
Typ
-8.5
±55
120
600
—
—
Max
(1)
—
—
—
—
—
—
—
6
1
Max
-200
500
900
-47
-40
—
—
—
Unit
MHz
MHz
dBc/Hz Measured with a 600 kHz
µs
ns
ns
ns
ns
ns
ns
dBm
dBm
dBm
Unit
dBc
kHz
µs
µs
Maximum power setting.
Minimum power setting.
offset at the transmitter output.
At any offset between 200 kHz
and 600 kHz, unmodulated
carrier, f
No modulation, see Note 2
Programmable
From FS to TX ready.
From Stand-by to TX ready.
MRF89XA
dev
Condition
Condition
= 50 kHz.
DS70622B-page 111
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