st72321j STMicroelectronics, st72321j Datasheet - Page 167

• Manufacturer Part Number: st72321j
• Description: 8-bit Mcu With Nested Interrupts, Flash, 10-bit Adc, 5 Timers, Spi, Sci, I2c Interface
• Manufacturer: STMicroelectronics

13.2 THERMAL CHARACTERISTICS
Notes:
1. The power dissipation is obtained from the formula P
and P
2. The average chip-junction temperature can be obtained from the formula T
PORT
Symbol
T
R
P
Jmax
is the port power dissipation determined by the user.
thJA
D
Package thermal resistance (junction to ambient)
Power dissipation
Maximum junction temperature
1)
Ratings
D
=P
2)
INT
+P
PORT
TQFP44 10x10
where P
J
= T
INT
A
is the chip internal power (I
+ P
D
x RthJA.
Value
150
500
52
ST72321J
°C/W
DD
Unit
mW
167/179
°C
xV
DD
)