ST7263 datasheet(97/109 Pages) STMICROELECTRONICS

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ST7263

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7.5 I/O PORT CHARACTERISTICS

A = 0 to +70°C unless otherwise specified)

All voltages are referred to VSS unless otherwise specified.

Note 1: Guaranteed by design, not tested in production.

Note 2: Data based on characterization results, not tested in production.

STANDARD I/O PORT PINS

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VOL

Output Low Level Voltage Port A1,

Port A2 (High Current open drain)

IOL = -25mA VDD=5V

1.5

Output Low Level Voltage Port A0,

Port A(3:7), Port C(0:2), Push Pull

IOL = -1.6mA VDD=5V

0.4

Output Low Level Voltage Port B (0:7),

Push Pull

IOL = -10mA VDD=5V

1.3

VOH

Output High Level Voltage Port A0,

Port A(3:7), Port C(0:2) Push Pull

IOH = 1.6mA

VDD-0.8

VOH

Output High Level Voltage Port B (0:7)

Push Pull

IOH = 10mA

VDD-1.3

VIH

Input High Level Voltage

PA(0:7),PB(0:7),PC(0:2),RESET

Leading Edge

0.7xVDD

VDD

VIL

Input Low Voltage PA(0-7),

PB(0-7), PC(0-2), RESET

Trailing Edge

VSS

0.3xVDD

RPU

Pull-up resistor

VDD = 5V

100

120

Ω

CIO

I/O Pin Capacitance 1)

5pF

tf(IO)out

Output High to Low Level Fall Time

All I/O ports

CL=50pF

Between 10% and 90%

25 2)

tr(IO)out

Output Low to High Level Rise Time

I/O ports in Push Pull mode

25 2)

tr(IO)out

External Interrupt pulse time 1)

1tCPU

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