K20P144M120SF3 Datasheet, PDF (23/80 Pages) Freescale Semiconductor, Inc – K20 Sub-Family Data Sheet

Symbol
t_tamper
Table 10. General switching specifications (continued)
Description
Port rise and fall time (high drive strength)
• Slew disabled
• Slew enabled
Min.
Max.
Unit
—
TBD
ns
—
TBD
ns
t_tamper
Port rise and fall time (low drive strength)
• Slew disabled
• Slew enabled
—
TBD
ns
—
TBD
ns
1. The greater synchronous and asynchronous timing must be met.
2. This is the shortest pulse that is guaranteed to be recognized.
3. 25pF load
4. 15pF load
5. 75pF load
6. 15pF load
7. 75pF load
8. 15pF load
General
Notes
5
6
7
8
5.4 Thermal specifications
5.4.1 Thermal operating requirements
Table 11. Thermal operating requirements
Symbol
T_J
T_A
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)
R_θJA
Four-layer
(2s2p)
R_θJA
Description 144 LQFP
Thermal
45
resistance,
junction to
ambient (natural
convection)
Thermal
36
resistance,
junction to
ambient (natural
convection)
144
MAPBGA
50
30
Table continues on the next page...
Unit
°C/W
°C/W
K20 Sub-Family Data Sheet Data Sheet, Rev. 3, 2/2012.
Freescale Semiconductor, Inc.
Preliminary
Notes
1
1
23