STA1295 datasheet(81/109 Pages) STMICROELECTRONICS

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DS12586 Rev 5

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STA1295, STA1275

Electrical characteristics

106

The table below lists the functional operating DC characteristics for the first (non-standard)

IO categories.

Table 37. Digital DC characteristics at 3.3 V

Symbol

Parameter

Test

condition

Limit values

Unit Notes

Min.

Typ.

Max.

VIL

Logical input low

level voltage

VDDIO = 3.3 V

-0.3

—

0.8

(1)

1. Excludes oscillator inputs SXTALI and MXTALI. Refer to oscillator electrical specifications.

VIH

Logical input

high level

voltage

VDDIO = 3.3 V

2.0

—

VDDIO + 0.3

(1)

VHYST S

Schmitt-trigger

hysteresis

—250

—

(2)

2. Apply to all digital inputs unless specified otherwise.

VTH+

Schmitt-trigger

high threshold

—1.49

—

(3)

3. Values for VTH+ and VTL- are referred to different PVTs

VTL-

Schmitt-trigger

low threshold

——

—

1.39

(3)

RPU

Equivalent pull-

—

325060

—

RPD

Equivalent pull-

down

—

325060

—

VOL

Low level output

voltage

IOL = 4 mA /

8mA

——

0.4

(4)

4. IOH/IOL is the maximum source/sink current drive that guarantees the VOH/VOL level, depending on the IO

buffer drive capability level (4 or 8 mA, not programmable).

VOH

High level output

voltage

IOH = 4 mA /

8mA

VDDIO - 0.4

—

(4)

IIH

High level input

current

——

—

< 1

μA

(5)

5. Pull-up or pull-down disabled.

IIL

Low level input

current

——

—

< 1

μA

(5)

CIN

Input Pin

Capacitance

——

—

1.5

—

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