Microchip Technology MA320002 Data Sheet

© 2011 Microchip Technology Inc.

DS61143H-page 163

Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature

-40°C 

≤ T

A

 

≤ +85°C for Industrial

-40°C 

≤ T

A

 

≤ +105°C for V-Temp

OS50

F

PLLI

PLL Voltage Controlled 
Oscillator (VCO) Input 
Frequency Range

4

—

5

MHz

ECPLL, HSPLL, XTPLL, 
FRCPLL modes

OS51

F

SYS

On-Chip VCO System 
Frequency

60

—

120

MHz

—

OS52

T

LOCK

PLL Start-up Time (Lock Time)

—

—

2

ms

—

OS53

D

CLK

CLKO Stability

(Period Jitter or Cumulative)

-0.25

—

+0.25

%

Measured over 100 ms 
period

These parameters are characterized, but not tested in manufacturing.

This jitter specification is based on clock-cycle by clock-cycle measurements. To get the effective jitter for 
individual time-bases on communication clocks, use the following formula:

For example, if SYSCLK = 80 MHz and SPI bit rate = 20 MHz, the effective jitter is as follows:

----------------------------------------------------------

--------------------------------------------------------------

=

80
20

------

--------------

2

--------------

=

=

Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature

-40°C 

≤ T

A

 

≤ +85°C for Industrial

-40°C 

≤ T

A

 

≤ +105°C for V-Temp

F20

FRC

-2

—

+2

%

—

Frequency calibrated at 25°C and 3.3V. TUN bits can be used to compensate for temperature drift.

Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature

-40°C 

≤ T

A

 

≤ +85°C for Industrial

-40°C 

≤ T

A

 

≤ +105°C for V-Temp

F21

LPRC

-15

—

+15

%

—

Change of LPRC frequency as V

DD

 changes.