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STM32W108C8

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Electrical characteristics<br />

<strong>STM32W108C8</strong><br />

Figure 55 shows typical output power against power setting on the ST reference design.<br />

Figure 55.<br />

Transmit output power<br />

14.7 Digital I/O specifications<br />

Table 150 lists the digital I/O specifications for the STM32W. The digital I/O power (named<br />

VDD_PADS) comes from three dedicated pins (Pins 23, 28 and 37). The voltage applied to<br />

these pins sets the I/O voltage.<br />

Table 150.<br />

Digital I/O characteristics<br />

Parameter Conditions Min. Typ. Max. Unit<br />

Voltage supply (Regulator<br />

Input)<br />

VDD_PADS 2.1 – 3.6 V<br />

Low Schmitt switching threshold<br />

V SWIL<br />

Schmitt input threshold<br />

going from high to low<br />

0.42 x<br />

VDD_PAD<br />

S<br />

–<br />

0.50 x<br />

VDD_PAD<br />

S<br />

V<br />

High Schmitt switching<br />

threshold<br />

V SWIH<br />

Schmitt input threshold<br />

going from low to high<br />

0.62 x<br />

VDD_PAD<br />

S<br />

–<br />

0.80 x<br />

VDD_PAD<br />

S<br />

Input current for logic 0 I IL – – -0.5 µA<br />

Input current for logic 1 I IH – – +0.5 µA<br />

Input pull-up resistor value R IPU 24 29 34 kΩ<br />

Input pull-down resistor value R IPD 24 29 34 kΩ<br />

V<br />

205/215 Doc ID 018587 Rev 2

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