ST72344 datasheet(167/191 Pages) STMICROELECTRONICS

167 / 191 page

ST72340, ST72344, ST72345

167/191

I/O PORT PIN CHARACTERISTICS (Cont’d)

13.10.2 Output Driving Current

Subject to general operating conditions for VDD, fCPU, and TA unless otherwise specified.

Notes:

1. The IIO current sunk must always respect the absolute maximum rating specified in Section 13.2.2 and the sum of IIO

(I/O ports and control pins) must not exceed IVSS.

2. The IIO current sourced must always respect the absolute maximum rating specified in Section 13.2.2 and the sum of

IIO (I/O ports and control pins) must not exceed IVDD.

3. Not tested in production, based on characterization results.

Symbol

Parameter

Conditions

Min

Max

Unit

VOL

Output low level voltage for a standard I/O pin

when 8 pins are sunk at same time

(see Figure 98)

IIO=+5mA

1.0

IIO=+2mA

0.4

Output low level voltage for a high sink I/O pin

when 4 pins are sunk at same time

(see Figure 101)

IIO=+20mA

1.3

IIO=+8mA

0.75

VOH

Output high level voltage for an I/O pin

when 4 pins are sourced at same time

(see Figure )

IIO=-5mA

VDD-1.5

IIO=-2mA

VDD-0.8

VOL

1)3)

Output low level voltage for a standard I/O pin

when 8 pins are sunk at same time

(see Figure 97)

IIO=+2mA

0.7

Output low level voltage for a high sink I/O pin

when 4 pins are sunk at same time

IIO=+8mA

0.5

VOH

2)3)

Output high level voltage for an I/O pin

when 4 pins are sourced at same time (Figure

108)

IIO=-2mA

VDD-0.8

VOL

1)3)

Output low level voltage for a standard I/O pin

when 8 pins are sunk at same time

(see Figure 99)

IIO=+2mA

0.9

Output low level voltage for a high sink I/O pin

when 4 pins are sunk at same time

IIO=+8mA

0.6

VOH

2)3)

Output high level voltage for an I/O pin

when 4 pins are sourced at same time

(see ...)

IIO=-2mA

VDD-0.9

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