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9123B–AUTO–07/09

ATA6871 [Preliminary]

7.6

Digital Inputs and Outputs

7.6.1

Digital Output Characteristics

If the ATA6871 is configured as first IC (master) in a string (CHIPONE = 1, CHIPLAST = 0 or 1),

the output OROUT acts as a push-pull output, the output STATUS as an open drain output. If

the ATA6871 is configured to be a stacked IC (CHIPONE = 0, CHIPLAST = 0 or 1), the output

signals STATUS and OROUT coming from the upper IC need to be transferred to the STATUS

and OROUT output of the master in the string via the STATUS_IN and OROUT_IN inputs. In this

case the OROUT and STATUS outputs act as level shifters based on current sources.

7.6.2

Digital Input Characteristics

Table 7-10.

Digital Output Characteristics (OROUT, STATUS)

No.

Parameters

Test Conditions

Pin

Symbol

Min.

Typ.

Max.

Unit

Type*

7.1

High-level output voltage

Iout = –5 mA

CHIPONE = 1

OROUT

V

0.8

×

VDD

VA

7.2

Low-level output voltage

Iout = +5 mA

CHIPONE = 1

OROUT,

STATUS

V

STATUS

0.2

×

VDD

VA

7.3

Low-level output current

Vout = –0.3V to +0.3V,

CHIPONE = 0

OROUT,

STATUS

–13

–8

µA

A

7.4

High-level output current

Vout = –0.3V to +0.3V,

CHIPONE = 0

OROUT,

STATUS

I

–65

–44

µA

A

*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter

Table 7-11.

Digital Input Characteristics (OROUT_IN, STATUS_IN)

No.

Parameters

Test Conditions

Pin

Symbol

Min.

Typ.

Max.

Unit

Type*

8.1

Low-level input current

(VDDHV + 1.4V)

±300 mV

OROUT_IN,

STATUS_IN

I

STATUS_IN

15

µA

A

8.2

High-level input current

(VDDHV + 1.4V)

±300 mV

OROUT_IN,

STATUS_IN

I

42

µA

A

*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter