RFM22 datasheet(8/150 Pages) HOPE

8 / 150 page

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Table 5. Auxiliary Block Specifications1

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Temperature Sensor

Accuracy2

TSA

When calibrated using temp

sensor offset register

—

0.5

—

°C

Temperature Sensor

Sensitivity2

TSS

—

mV/°C

Low Battery Detector

Resolution2

LBDRES

—

Low Battery Detector

Conversion Time2

LBDCT

—

250

—

μs

Microcontroller Clock

Output Frequency

Configurable to 30 MHz,

15 MHz, 10 MHz, 4 MHz,

3 MHz, 2 MHz, 1 MHz, or

32.768 kHz

32.768K

—

30M

General Purpose ADC

Accuracy2

ADCENB

—

bit

General Purpose ADC

Resolution2

ADCRES

—

Temp Sensor & General

Purpose ADC Conversion

Time2

ADCCT

—

305

—

μs

30 MHz XTAL Start-Up time

t30M

—

30 MHz XTAL Cap

Resolution2

30MRES

—

32 kHz XTAL Start-Up Time2

t32K

—

sec

32 kHz XTAL Accuracy2

32KRES

—

100

—

ppm

32 kHz RC OSC Accuracy2

32KRCRES

—

2500

—

ppm

POR Reset Time

tPOR

—

Software Reset Time2

tsoft

—

100

—

μs

Notes:

1. All specification guaranteed by production test unless otherwise noted.

2. Guaranteed by qualification.

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