ST8034AT datasheet(17/39 Pages) STMICROELECTRONICS

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Electrical characteristics

ST8034T, ST8034AT, ST8034P, ST8034C

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DocID024587 Rev 4

Table 9. Microcontroller interface

Symbol

Parameter

Test conditions(1)

Min.

Typ.

Max.

Unit

Data line to the microcontroller (I/OUC pin)(2)

Delay time

Falling edge on pin I/O to

falling edge on I/OUC or vice

versa

200

tW(PU)

Pull-up pulse width

100

400

fIO

Input/output frequency

MHz

Input capacitance

VOL

Output voltage low

IOL = 1 mA

0.3

VOH

Output voltage high

No load

0.9

VDD(INTF)

+ 0.1

IOH  40 A, VDD(INTF) > 2 V

0.75

VDD(INTF)

+ 0.1

IOH  20 A, VDD(INTF) < 2 V

0.75

VDD(INTF)

+ 0.1

VIL

Input voltage low

-0.3

0.3

VDD(INTF)

VIH

Input voltage high

0.7

VDD(INTF)

+ 0.3

VHYS

Hysteresis

I/OUC pin

0.14

VDD(INTF)

IIL

Input current low

VIL = 0 V

500

A

IIH

Input current high

VIH = VDD(INTF)

A

RPU

Pull-up resistance to

VDD(INTF)

810



IPU

Pull-up current (one-shot

circuit active)

VOH = 0.9 VDD(INTF)

-1

tR(I)

Input rise time

VIL max. to VIH min.

0.15

s

tR(O)

Output rise time

CL  30 pF, 10% to 90%,

0 V to VDD(INTF)

0.1

s

tF(I)

Input fall time

VIL max. to VIH min.

0.15

s

tF(O)

Output fall time

CL  30 pF, 10% to 90%,

0 V to VDD(INTF)

0.1

s

Device control inputs (CLKDIV, RSTIN, VCC_SEL, CS pins)(3)

VIL

Input voltage low

-0.3

0.3

VDD(INTF)

VIH

Input voltage high

0.7

VDD(INTF)

+ 0.3

VHYS

Hysteresis

0.14

VDD(INTF)

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