STM8S103F2 datasheet(105/117 Pages) STMICROELECTRONICS

部件名	STM8S103F2

功能描述	Access line, 16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, data EEPROM,10-bit ADC, 3 timers, UART, SPI, I²C

PDF	117 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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105 / 117 page

Reference document

12.1

JESD51-2 integrated circuits thermal test method environment conditions - natural convection

(still air). Available from www.jedec.org.

Selecting the product temperature range

12.2

When ordering the microcontroller, the temperature range is specified in the order code.

The following example shows how to calculate the temperature range needed for a given

application.

Assuming the following application conditions:

• Maximum ambient temperature TAmax= 75 °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

Amax

• PDmax = 400 mW + 64 mW

Thus: PDmax = 464 mW

TJmax for LQFP32 can be calculated as follows, using the thermal resistance ΘJA:

TJmax = 75 °C + (60 °C/W x 464 mW) = 75 °C + 27.8 °C = 102.8 °C

This is within the range of the suffix 6 version parts (-40 < TJ < 105 °C).

In this case, parts must be ordered at least with the temperature range suffix 6.

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Thermal characteristics

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STM8S103F2 数据表(PDF) 105 Page - STMicroelectronics