ST72F521 Datasheet, PDF (199/215 Pages) STMicroelectronics – 80/64-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE

ST72F521, ST72521B
13.2 THERMAL CHARACTERISTICS
Symbol
R_thJA
Ratings
Package thermal resistance (junction to ambient)
TQFP80 14x14
TQFP64 14x14
TQFP64 10x10
Value
55
47
50
Unit
°C/W
P_D
T_Jmax
Power dissipation ¹⁾
Maximum junction temperature ²⁾
500
mW
150
°C
Notes:
1. The power dissipation is obtained from the formula P_D=P_INT+P_PORT where P_INT is the chip internal power (I_DDxV_DD)
and P_PORT is the port power dissipation determined by the user.
2. The average chip-junction temperature can be obtained from the formula T_J = T_A + P_D x RthJA.
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