K20P48M50SF0 Datasheet, PDF (19/60 Pages) Freescale Semiconductor, Inc – K20 Sub-Family

General
emission level is the value of the maximum measured emission, rounded up to the next whole number, from among the
measured orientations in each frequency range.
2. V_DD = 3.3 V, T_A = 25 °C, f_OSC = 12 MHz (crystal), f_SYS = 48 MHz, f_BUS = 48MHz
3. Specified according to Annex D of IEC Standard 61967-2, Measurement of Radiated Emissions—TEM Cell and Wideband
TEM Cell Method
5.2.7 Designing with radiated emissions in mind
To find application notes that provide guidance on designing your system to minimize
interference from radiated emissions:
1. Go to http://www.freescale.com.
2. Perform a keyword search for “EMC design.”
5.2.8 Capacitance attributes
Table 8. Capacitance attributes
Symbol
C_{IN_A}
C_{IN_D}
Description
Input capacitance: analog pins
Input capacitance: digital pins
Min.
Max.
Unit
—
7
pF
—
7
pF
5.3 Switching specifications
5.3.1 Device clock specifications
Table 9. Device clock specifications
Symbol
f_SYS
f_{SYS_USB}
f_BUS
f_FLASH
f_LPTMR
f_SYS
f_BUS
Description
Normal run mode
System and core clock
System and core clock when Full Speed USB in
operation
Bus clock
Flash clock
LPTMR clock
VLPR mode¹
System and core clock
Bus clock
Min.
—
20
—
—
—
—
—
Max.
50
—
50
25
25
4
4
Table continues on the next page...
Freescale Semiconductor, Inc.
K20 Sub-Family Data Sheet, Rev. 4 5/2012.
Unit
MHz
MHz
MHz
MHz
MHz
MHz
MHz
Notes
19