Symbol

Parameter

Test Conditions

Value

Unit

Min.

Typ.

Max.

Clock Input High Level

External Clock

V

Clock Input Low Level

External Clock

– 0.3

V

Input High Level

TTL

2.0

V

CMOS

V

Input Low Level

TTL

– 0.3

0.8

V

CMOS

– 0.3

V

RESET Input High Level

V

RESET Input Low Level

–0.3

V

RESET Input Hysteresis

0.3

1.5

V

Output High Level

Push Pull, Iload = – 0.8mA

V

Output Low Level

Push Pull or Open Drain,

Iload = 1.6mA

0.4

V

Weak Pull-up Current

Bidirectional Weak Pull-

– 50

– 200

– 420

µA

Active Pull-up Current,

for INT0 and INT7 only

– 80

– 200

– 420

µA

I/O Pin Input Leakage

Input/Tri-State,

–10

+ 10

µA

Reset Pin Input Leakage

–30

+ 30

µA

A/D Pin Input Leakage

Alternate Function,

Open Drain,

–3

+ 3

µA

Active Pull-up Input

Leakage

– 10

+ 10

µA

OSCIN Pin Input Leakage

–10

+ 10

µA

Note: All I/O Ports are configured in Bidirectional Weak Pull-up Mode with no DC load, External Clock pin (OSCIN) is driven by square wave

external clock. No peripheral working.

DC ELECTRICAL CHARACTERISTICS

DC TEST CONDITIONS

®

ST9040

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