CC2530F32, CC2530F64

CC2530F128, CC2530F256

SWRS081B

– APRIL 2009 – REVISED FEBRUARY 2011

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32-MHz CRYSTAL OSCILLATOR

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Crystal frequency

32

MHz

Crystal frequency accuracy

–40

40

ppm

ESR

Equivalent series resistance

6

60

Ω

Crystal shunt capacitance

1

7

pF

Crystal load capacitance

10

16

pF

Start-up time

0.3

ms

The crystal oscillator must be in power down for a

guard time before it is used again. This

Power-down guard time

requirement is valid for all modes of operation. The

3

ms

need for power-down guard time can vary with

crystal type and load.

(1)

Including aging and temperature dependency, as specified by [1]

32.768-kHz CRYSTAL OSCILLATOR

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Crystal frequency

32.768

kHz

Crystal frequency accuracy

–40

40

ppm

ESR

Equivalent series resistance

40

130

k

Ω

Crystal shunt capacitance

0.9

2

pF

Crystal load capacitance

12

16

pF

Start-up time

0.4

s

(1)

Including aging and temperature dependency, as specified by [1]

32-kHz RC OSCILLATOR

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

32.753

kHz

Frequency accuracy after calibration

±0.2%

0.4

%/

°C

3

%/V

2

ms

(1)

The calibrated 32-kHz RC oscillator frequency is the 32-MHz XTAL frequency divided by 977.

(2)

Frequency drift when temperature changes after calibration

(3)

Frequency drift when supply voltage changes after calibration

(4)

When the 32-kHz RC oscillator is enabled, it is calibrated when a switch from the 16-MHz RC oscillator to the 32-MHz crystal oscillator

is performed while SLEEPCMD.OSC32K_CALDIS is 0.

8

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