ST72321B STMICROELECTRONICS [STMicroelectronics], ST72321B Datasheet - Page 172
![no-image](/images/no-image-200.jpg)
ST72321B
Manufacturer Part Number
ST72321B
Description
64/44-pin 8-bit MCU with 32 to 60K Flash/ROM, ADC, five timers, SPI, SCI, I2C interface
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.ST72321B.pdf
(187 pages)
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13.2 THERMAL CHARACTERISTICS
Notes:
1. The maximum chip-junction temperature is based on technology characteristics.
2. The maximum power dissipation is obtained from the formula PD = (TJ -TA) / RthJA.
The power dissipation of an application can be defined by the user with the formula: PD=PINT+PPORT where PINT is
the chip internal power (IDDxVDD) and PPORT is the port power dissipation depending on the ports used in the applica-
tion.
172/187
Symbol
T
R
P
Jmax
thJA
D
Package thermal resistance (junction to ambient)
Power dissipation
Maximum junction temperature
1)
Ratings
2)
LQFP64 14x14
LQFP64 10x10
LQFP44 10x10
LQFP32 7x7
Value
150
500
47
50
52
70
°C/W
Unit
mW
°C
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