ST72682 datasheet(27/36 Pages) STMICROELECTRONICS

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ST72682

Electrical characteristics

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7.7.2

Output driving current

Subject to general operating conditions for VDD33, fOSC, and TA unless otherwise specified.

Table 21.

Output driving current

Symbol

Parameter

Conditions

Min

Max

Unit

VOL

(1)

The IIO current sunk must always respect the absolute maximum rating specified in Section Table 9. and

the sum of IIO (I/O ports and control pins) must not exceed IVSS.

Output low level voltage for a D2 I/O pin

when 8 pins are sunk at same time

(see Figure )

IIO=2mA

300

Output low level voltage for a D4 I/O pin

when 8 pins are sunk at same time

(see Figure 12)

IIO=4mA

400

Output low level voltage for a D8 I/O pin

when 8 pins are sunk at same time

(see Figure 13)

IIO=8mA

500

VDD33-

VOH

(2)

The IIO current sourced must always respect the absolute maximum rating specified in Section Table 9.

and the sum of IIO (I/O ports and control pins) must not exceed IVDD33. True open drain I/O pins does not

have VOH.

Output high level voltage for a D2 I/O pin

when 8 pins are sourced at same time

(see and Figure 14)

IIO=2mA

600

Output high level voltage for a D4 I/O pin

when 8 pins are sourced at same time

(see Figure 15)

IIO=4mA

600

Output high level voltage for a D8 I/O pin

when 8 pins are sourced at same time

(see Figure 16)

IIO=8mA

600

Figure 11.

Typical VOL at VDD33=3.3 V (I/O D2) Figure 12. Typical VOL at VDD33=3.3 V (I/O D4)

V O L I/ Os D 2 at V D D =3 .3 V

100

150

IO L (m A )

VOL I/ Os D4 a t VDD=3.3 V

100

150

0246

IOL ( mA )

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