DLPC3433 datasheet(11/62 Pages) TI1

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DLPC3433, DLPC3438

www.ti.com

DLPS035B – FEBRUARY 2014 – REVISED JANUARY 2016

Pin Functions – GPIO Peripheral Interface(1)

I/O

DESCRIPTION(2)

NAME

NUMBER

General purpose I/O 19 (hysteresis buffer). Options:

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

GPIO_19

M15

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

KEYPAD_4 (input): keypad applications

General purpose I/O 18 (hysteresis buffer). Options:

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

GPIO_18

M14

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

KEYPAD_3 (input): keypad applications

General purpose I/O 17 (hysteresis buffer). Options:

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

GPIO_17

L15

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

KEYPAD_2 (input): keypad applications

General purpose I/O 16 (hysteresis buffer). Options:

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

GPIO_16

L14

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

KEYPAD_1 (input): keypad applications

General purpose I/O 15 (hysteresis buffer). Options:

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

GPIO_15

K15

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

KEYPAD_0 (input): keypad applications

General purpose I/O 14 (hysteresis buffer). Options:

GPIO_14

K14

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

General purpose I/O 13 (hysteresis buffer). Options:

CAL_PWR (output): Intended to feed the calibration control of the successive approximation ADC

GPIO_13

J15

light sensor.

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

General purpose I/O 12 (hysteresis buffer). Options:

(Output) power enable control for LABB light sensor.

GPIO_12

J14

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

General purpose I/O 11 (hysteresis buffer). Options:

(Output): thermistor power enable.

GPIO_11

H15

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

General Purpose I/O 10 (hysteresis buffer). Options:

RC_CHARGE (output): Intended to feed the RC charge circuit of the successive approximation ADC

GPIO_10

H14

used to control the light sensor comparator.

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

General purpose I/O 09 (hysteresis buffer). Options:

LS_PWR (active high output): Intended to feed the power control signal of the successive

GPIO_09

G15

approximation ADC light sensor.

Optional GPIO. Should be configured as a logic zero GPIO output and left unconnected if not used

(otherwise it will require an external pullup or pulldown to avoid a floating GPIO input).

General purpose I/O 08 (hysteresis buffer). Options:

(All) Normal mirror parking request (active low): To be driven by the PROJ_ON output of the host. A

GPIO_08

G14

logic low on this signal will cause the DLPC343x to PARK the DMD, but it will not power down the

DMD (the DLPA200x does that instead). The minimum high time is 200 ms. The minimum low time is

also 200 ms.

(1)

GPIO signals must be configured through software for input, output, bidirectional, or open-drain. Some GPIO have one or more

alternative use modes, which are also software configurable. The reset default for all GPIO is as an input signal. An external pullup is

required for each signal configured as open-drain.

(2)

DLPC343x general purpose I/O. These GPIO are software configurable.

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