SPEAR1340 datasheet(40/200 Pages) STMICROELECTRONICS

40 / 200 page

Pin description

SPEAr1340

40/200

Doc ID 023063 Rev 4

Pin type

Pad type information

ANA= Analog

OSC= Oscillator

SSTL= SSTL 1V5/1V8

IOTYPE1= 3V3

IOTYPE2= 3V3/1V8

IOTYPE3= 3V3/2V5

IOTYPE4= 3V3 TTL buffer

REG OUT= Voltage regulator output

ANA REF= Analog reference

DED GND= Dedicated ground

PU/PD

Indicates the presence of an internal pull-up

or pull-down resistor.

Pull-up and pull-down can be enabled or

disabled via software.

PU= Pull-up

PD= Pull-down

Deact= Deactivated

Drive

Drive current capability

–

Slew

Signal transition

FAST= Fast slew

NOM= Nominal slew

Direction

Indicates the direction of the pad.

I= Input

O= Output

IO= Input/output

Out value

Indicates the electrical value on the ball.

0= The buffer drives VOL

1= The buffer drives VOH

H= High-impedance with an active pull-up resistor

L= High-impedance with an active pull-down

resistor

Z= High-impedance

Supply name

The voltage supply that powers the pad.

See Table 4: Power supply signals

description.

–

Reset state

Indicates the state during reset

–

Reset rel. state Indicates the state after reset

–

Reset mode

IO voltage setting during reset

–

Reset rel.

mode

IO voltage setting after reset

–

Compensation

cell

Compensation cell for reducing the spread

of PVT (process, voltage and temperature)

related parameters of the I/O pad. The

compensation values are programmable in

the registers of the related cell.

CC1= IO_COMP1_3V3

CC2= IO_COMP2_3V3

CC3= IO_COMP1_1V8_3V3

CC4= IO_COMP2_1V8_3V3

CC5= IO_COMP_2V5_3V3

CC6= IO_COMP_DDR

Table 2.

Headers/abbreviations (continued)

Header

Description

Abbreviations

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