ST7262 datasheet(112/132 Pages) STMICROELECTRONICS

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ST7262

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I/O PORT PIN CHARACTERISTICS (Cont’d)

12.8.2 Output Driving Current

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

Figure 71. Typ. VOL at VDD=5V (std. port)

Figure 72. Typ. VOL at VDD=5V (high-sink)

Figure 73. Typ. VDD-VOH at VDD=5V (std. port)

Figure 74. Typ. VDD-VOH at VDD=5V (high-sink)

Notes:

1. The IIO current sunk must always respect the absolute maximum rating specified in Section 12.2 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 12.2 and the sum of IIO

(I/O ports and control pins) must not exceed IVDD. True open drain I/O pins does not have VOH.

Symbol

Parameter

Conditions

Min

Max

Unit

VOL

Output low level voltage for a standard I/O pin

when up to 8 pins are sunk at same time

(see Figure 71)

IIO=+5mA

1.3

IIO=+2mA

0.4

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

when up to4 pins are sunk at same time

(see Figure 72)

IIO=+20mA

1.3

IIO=+8mA

0.4

VOH

Output high level voltage for an I/O pin

when up to 8 pins are sourced at same time

(see Figure 73)

IIO=-5mA

VDD-2.0

IIO=-2mA

VDD-0.8

0.2

0.4

0.6

0.8

1.2

234

789

IIO (mA)

0.1

0.2

0.3

0.4

0.5

0.6

0.7

2.5

7.5

12.5

17.5

22.5

IIO (mA)

0.2

0.4

0.6

0.8

1.2

1.4

-7.5

-6.5

-5.5

-4.5

-3.5

-2.5

-1.5

-0.5

IIO (mA)

0.05

0.1

0.15

0.2

0.25

0.3

-8

-7

-6

-5

-4

-3

-2

-1

IIO (mA)

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