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SX1502

4/8/16 Channel Low Voltage GPIO with NINT and NRESET

Semtech Corporation 

SX1501/SX1502/SX1503

4/8/16 Channel Low Voltage GPIO

ADVANCED COMMUNICATIONS & SENSING

1 PIN DESCRIPTION

1.1 SX1501 4-channel GPIO

Pin Symbol Type Description

A: Analog

D: Digital

I: Input

O: Output

P: Power

1

NRESET

2

SDA

3

NC1

4

SCL

5

I/O[0]

6

I/O[1]

7

VCC1

8

GND

9

I/O[2]

10

I/O[3]

11

NINT

12

ADDR

13

NC2

14

VDDM

15

NC3

16

NC4

17

NC7

18

GND

19

NC5

20

NC6

DIO

DIO

-

DI

DIO (*1)

DIO (*1)

P

P

DIO (*1)

DIO (*1)

DO

DI

-

P

-

-

-

P

-

-

Active low reset

I2C serial data line

Leave open, not connected

I2C serial clock line

I/O[0], at power-on configured as an input

I/O[1], at power-on configured as an input

I/O supply voltage

Ground Pin

I/O[2], at power-on configured as an input

High sink I/O.

I/O[3], at power-on configured as an input

High sink I/O.

Active low interrupt output

Address input, connect to VDDM or GND

Leave open, not connected

Main supply voltage

Leave open, not connected

Leave open, not connected

Connect to VCC1

Ground Pin

Leave open, not connected

Leave open, not connected

(*1) This pin is programmable through the I2C interface

Table 1 – SX1501 Pin Description

NRESET

SDA

NC1

SCL

I/O[0]

GND

(PAD)

NC3

VDDM

NC2

ADDR

NINT

Rev 8 – 18th Feb. 2009

Figure 1 – SX1501 QFN-UT-20 Pinout

4

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