ST72325 STMICROELECTRONICS [STMicroelectronics], ST72325 Datasheet - Page 177

• Manufacturer Part Number: ST72325
• Description: 8-BIT MCU WITH 16 TO 60K FLASH/ROM, ADC, CSS, FIVE TIMERS, SPI, SCI, I2C INTERFACE
• Manufacturer: STMICROELECTRONICS [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
Jmax
P
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
TQFP64 10x10
TQFP44 10x10
TQFP48 7x7
TQFP32 7x7
where P
SDIP42
SDIP32
J
= T
INT
A
is the chip internal power (I
+ P
D
x RthJA.
Value
150
500
50
80
52
55
70
50
ST72325
°C/W
DD
Unit
177/193
mW
°C
xV
DD
)