Freescale-semiconductor MC68HC08KH12 Manual do Utilizador Página 249

  • Descarregar
  • Adicionar aos meus manuais
  • Imprimir
  • Página
    / 262
  • Índice
  • MARCADORES
  • Avaliado. / 5. Com base em avaliações de clientes
Vista de página 248
MC68HC(7)08KH12Rev. 1.1 Advance Information
Freescale Semiconductor
249
17.4 Functional Operating Range
17.5 Thermal Characteristics
Characteristic Symbol Value Unit
Operating Temperature Range T
A
0 to 85 °C
Operating Voltage Range V
DD
4.0 to 5.5 V
Characteristic Symbol Value Unit
Thermal Resistance
QFP (64 Pins) θ
JA
70 °C/W
I/O Pin Power Dissipation P
I/O
User Determined W
Power Dissipation
(1)
P
D
P
D
= (I
DD
x V
DD
) + P
I/O
=
K/(T
J
+ 273 °C)
W
Constant
(2)
K
P
D
x
(T
A
+ 273 °C)
+ P
D
2
×
θ
JA
W/°C
Average Junction Temperature T
J
T
A
+ (P
D
× θ
JA
) °C
Maximum Junction Temperature T
JM
100 °C
NOTES
1. Power dissipation is a function of temperature.
2. K is a constant unique to the device. K can be determined for a known T
A
and measured
P
D.
With this value of K, P
D
and T
J
can be determined for any value of T
A
.
Vista de página 248
1 2 ... 244 245 246 247 248 249 250 251 252 253 254 ... 261 262

Comentários a estes Manuais

Sem comentários