SI4736-B20 Datasheet, PDF (15/38 Pages) Silicon Laboratories – BROADCAST WEATHER BAND RADIO RECEIVER

Si4736/37/38/39-B20
Table 12. Reference Clock and Crystal Characteristics
(V_DD = 2.7 to 5.5 V, V_IO = 1.5 to 3.6 V, T_A = –20 to 85 °C)
Parameter
Symbol Test Condition
Min
Typ
Max
Unit
RCLK Supported Frequencies^*
RCLK Frequency Tolerance
REFCLK_PRESCALE
REFCLK
Reference Clock
31.130 32.768 40000.0 kHz
–50
—
50
ppm
1
—
4095
31.130 32.768 34.406 kHz
Crystal Oscillator
Crystal Oscillator Frequency
—
32.768
—
kHz
Crystal Frequency Tolerance*
–100
—
100
ppm
Board Capacitance
—
—
3.5
pF
*Note: The Si4736/37/38/39 divides the RCLK input by REFCLK_PRESCALE to obtain REFCLK. There are some RCLK
frequencies between 31.130 kHz and 40 MHz that are not supported. See AN332, Table 6 for more details.
15
Rev. 1.0