RFM31B
Table 4. Auxiliary Block Specifications
Parameter
Temperature Sensor
Accuracy
Temperature Sensor
Sensitivity
Low Battery Detector
Resolution
Low Battery Detector
Conversion Time
Microcontroller Clock
Output Frequency
Symbol
TS
A
TS
S
LBD
RES
LBD
CT
F
MC
Configurable to 30 MHz,
15 MHz, 10 MHz, 4 MHz,
3 MHz, 2 MHz, 1 MHz, or
32.768 kHz
Conditions
After calibrated via sensor offset
register tvoffs[7:0]
Min
—
—
—
—
32.768K
Typ
0.5
5
50
250
—
Max
—
—
—
—
30M
Units
°C
mV/°C
mV
µs
Hz
General Purpose ADC
Resolution
General Purpose ADC Bit
Resolution
Temp Sensor & General
Purpose ADC Conversion
Time
30 MHz XTAL Start-Up time
ADC
ENB
ADC
RES
ADC
CT
—
—
—
8
4
305
—
—
—
bit
mV/bit
µs
t
30M
—
600
—
µs
30 MHz XTAL Cap
Resolution
32 kHz XTAL Start-Up Time
32 kHz XTAL Accuracy
using 32 kHz XTAL
32 kHz Accuracy using
Internal RC Oscillator
POR Reset Time
Software Reset Time
30M
RES
t
32k
32K
RES
32KRC
RES
t
POR
t
soft
—
—
—
—
—
—
97
6
100
2500
16
100
—
—
—
—
—
—
fF
sec
ppm
ppm
ms
µs
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HOPERF [ Hope Microelectronics co., Ltd ]
