AS3658F-BCTP datasheet(32/158 Pages) AMSCO

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AS3658

Data Sheet Confidential - Detail ed Descri ption-Power Management Functions

Moreover, a special function can be selected for each digital input pin and a pull-up resistor to VCURR_GPIO or a pull-

down resistor can be enabled.

Table 23. High Current GPIO Pin Characteristics (VCURR1_GPIO1 … VCURR4_GPIO4)

VVSUPPLY=3.0 to 5.5V; Tamb= –20 to +70°C; unless otherwise specified

Symbol

Parameter

Min

Typ

Max

Unit

Note

VGPIOMAX

Maximum voltage

CURR1...4_GPIO

1…4 pins

VCURR_GPIO+

0.3

Pin VCURR_GPIO is used as supply for

the GPIO pins

VOLH

Low level output

voltage switch

mode

–0.3

+0.35

IOL=+100mA; digital output

(GPIOxMode=100b and

currX_current=3Fh)

VOL

Low level output

voltage

–0.3

+0.4

IOL=+1mA; digital output

(GPIOxMode=000b ... 010b)

VOH

High level output

voltage

0.8·VCURR_G

PIO.

VCURR_GPIO

IOH=–1mA; digital push-pull output

VIL

Low level input

voltage

–0.3

0.4

digital input

VIH

High level input

voltage

1.3

VCURR_GPIO

digital input

ILEAKAGE

Leakage current

µA

high impedance

Rpull-up

Pull-up resistance

GPIOxMode=x0b; GPIOxPulls=10b;

VCURR_GPIO=3.6V

Rpull-down

Pull-down

resistance

161

digital input; GPIOxPulls=01b;

VCURR_GPIO=3.6V

Table 24. CURR1_GPIO1 Bit definition

Addr: 18

GPIO1

This register controls the mode of the CURR1_GPIO1 Pin

Bit

Bit Name

Default Access

Description

2…0

GPIO1Mode

ROM

R/W

000b

digital open drain NMOS output

(only NMOS enabled)

001b

digital push-pull output

(NMOS & PMOS enabled, no PWM out possible)

010b

digital input

(NMOS & PMOS disabled, digital input logic

enabled)

011b

digital open drain current sink operation Current

defined by curr1_current

100b

digital open drain switch operation On resistance

defined by curr1_current

101b

111b

high impedance (or SD1 in DCDC step

down external controller mode

(sd1_1A_mode = 1100b)).NMOS & PMOS disabled,

digital input logic disabled)

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