EF6805P2 datasheet(4/31 Pages) STMICROELECTRONICS

4 / 31 page

SWITCHING CHARACTERISTICS

(VCC = + 5.25Vdc ± 0.5Vdc, VSS = 0Vdc, TA =TL to TH unless otherwise noted)

Symbol

Parameter

Min.

Typ.

Max.

Unit

f os c

Oscillator Frequency

0.4

4.2

MHz

t cyc

Cycle Time (4/f osc)

0.95

µs

t WL,tWH

INT, INT2, and TIMER Pulse Width (see interrupt

section)

t cyc + 250

t RWL

RESET Pulse Width

t cyc + 250

f INT

INT Zero-crossing Detection Input Frequency

0.03

kHz

External Clock Input Duty Cycle (EXTAL)

Crystal Oscillator Start-up Time*

100

PORT ELECTRICAL CHARACTERISTICS

(VCC = + 5.25Vdc ± 0.5Vdc, VSS = 0Vdc, TA =TL to TH unless otherwise noted)

PORT A WITH CMOS DRIVE ENABLED

Symbol

Parameter

Min.

Typ.

Max.

Unit

VOL

Output Low Voltage (ILo ad = 1.6mA)

0.4

VOH

Output High Voltage

I Lo ad = – 100

µA

I Load =– 10µA

2.4

VCC – 1.0

VIH

Input High Voltage (I Load = – 300µA max.)

2.0

VCC

VIL

Input Low Voltage (I Lo ad = – 500

µA max.)

VSS

0.8

I IH

High Z State Input Current (Vin = 2.0V to VCC)

– 300

µA

I IL

High Z State Input Current (Vin = 0.4V)

– 500

µA

PORT B

Symbol

Parameter

Min.

Typ.

Max.

Unit

VOL

Output Low Voltage

I Lo ad = 3.2mA

I Lo ad = 10mA (sink)

0.4

1.0

VOH

Output High Voltage I Lo ad =– 200

µA

2.4

I OH

Darlington Current Drive (source) VO = 1.5V

– 1.0

– 10

VIH

Input High Voltage

2.0

V CC

VIL

Input Low Voltage

V SS

0.8

I TS I

High Z State Input Current

< 2

µA

PORT C AND PORT A WITH CMOS DRIVE DISABLED

Symbol

Parameter

Min.

Typ.

Max.

Unit

VOL

Output Low Voltage I Lo ad = 1.6mA

0.4

VOH

Output High Voltage I Lo ad = – 100

µA

2.4

VIH

Input High Voltage

2.0

V CC

VIL

Input Low Voltage

V SS

0.8

I TS I

High Z State Input Current

< 2

µs

EF6805U3

4/31

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