General
1. This is the minimum pulse width that is guaranteed to pass through the pin synchronization circuitry. Shorter pulses may or
may not be recognized. In Stop, VLPS, LLS, and VLLSx modes, the synchronizer is bypassed so shorter pulses can be
recognized in that case.
2. The greater synchronous and asynchronous timing must be met.
3. This is the minimum pulse width that is guaranteed to be recognized as a pin interrupt request in Stop, VLPS, LLS, and
VLLSx modes.
4. 75 pF load
5. 15 pF load
5.4 Thermal specifications
5.4.1 Thermal operating requirements
Table 11. Thermal operating requirements
Symbol
TJ
TA
Description
Die junction temperature
Ambient temperature
Min.
Max.
Unit
–40
125
°C
–40
105
°C
5.4.2 Thermal attributes
Board type Symbol
Single-layer
(1s)
RθJA
Four-layer
(2s2p)
RθJA
Single-layer
(1s)
RθJMA
Four-layer
(2s2p)
RθJMA
Description 144 LQFP
Thermal
45
resistance,
junction to
ambient (natural
convection)
Thermal
36
resistance,
junction to
ambient (natural
convection)
Thermal
36
resistance,
junction to
ambient (200 ft./
min. air speed)
Thermal
30
resistance,
junction to
ambient (200 ft./
min. air speed)
144
MAPBGA
48
29
38
25
Table continues on the next page...
Unit
°C/W
°C/W
°C/W
°C/W
Notes
1
1
1
1
K10 Sub-Family Data Sheet, Rev. 3, 6/2013.
22
Freescale Semiconductor, Inc.