STA1095 datasheet(59/127 Pages) STMICROELECTRONICS

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DS13319 Rev 2

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STA108x, STA109x

Electrical Characteristics

126

4.6

DC Characteristics

IOs in Accordo2 fall into single category:



Logical CMOS function

Table 23 lists the functional operating DC characteristics.

Table 23. Digital DC Characteristics

Symbol

Parameter

Test condition

Limit values

Unit

Notes

Min

Typ

Max

VIL(1)

Logical input low level

voltage

VDDIO = 3.3V

- 0.3

0.8

(2)

VIH(3)

Logical input high level

voltage

VDDIO = 3.3V

2.0

VDDIO+0.3

(2)

VHYST

Schmitt-trigger

hysteresis

-250

(4)

VTH+

Schmitt-trigger high

threshold

-1.49

VTL-

Schmitt-trigger low

threshold

1.39

RPU

Equivalent pull-up



RPD

Equivalent pull-down



VOL

Low level output voltage

IOL=4mA/8mA

0.4

(5)

VOH

High level output voltage

IOH=4mA/8mA VDDIO - 0.4

(5)

IIH

High level input current

< 1

µA

(6)

IIL

Low level input current

< 1

µA

(6)

CIN

Input Pin Capacitance

1.5

1. VIL undershoot: -0.5 V. Duration of the undershoot pulse cannot be greater than one third of the cycle rate.

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

3. VIH overshoot: VDDIO + 0.5 V. Duration of the overshoot pulse cannot be greater than one third of the cycle rate.

4. Apply to all digital inputs unless specified otherwise.

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).

6. Pull-up or pull-down disabled.

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