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STM8AP5X76TAY Datasheet(PDF) 89 Page - STMicroelectronics

Part # STM8AP5X76TAY
Description  Automotive 8-bit MCU, with up to 128 Kbytes Flash, EEPROM, 10-bit ADC, timers, LIN, CAN, USART, SPI, I2C, 3 V to 5.5 V
PDF  100 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM8AP5X76TAY Datasheet(HTML) 89 Page - STMicroelectronics

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STM8AF61xx, STM8AF51xx
Electrical characteristics
89/100
11.4.2
Selecting the product temperature range
When ordering the microcontroller, the temperature range is specified in the order code (see
Figure 47: STM8A order codes on page 95
).
The following example shows how to calculate the temperature range needed for a given
application.
Assuming the following application conditions:
Maximum ambient temperature TAmax= 82 °C (measured according to JESD51-2),
IDDmax = 8 mA, VDD = 5 V, maximum 20 I/Os used at the same time in output at low
level with IOL = 8 mA, VOL= 0.4 V
PINTmax = 8 mA x 5 V= 400 mW
PIOmax = 20 x 8 mA x 0.4 V = 64 mW
This gives: PINTmax = 400 mW and PIOmax 64 mW:
PDmax = 400 mW + 64 mW
Thus: PDmax = 464 mW
Using the values obtained in Table 42: Thermal characteristics on page 88 TJmax is
calculated as follows:
–
For LQFP64 46°C/W
TJmax = 82° C + (46° C/W x 464 mW) = 82°C + 21°C = 103° C
This is within the range of the suffix B version parts (-40 < TJ < 105° C).
Parts must be ordered at least with the temperature range suffix B.



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