CS5519 datasheet(4/17 Pages) BCDSEMI

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Data Sheet

Enhanced Multi-touch Capacitive Touch Screen Controller

CS5519

Apr. 2013

Rev. 1. 0

BCD Semiconductor Manufacturing Limited

Pin Description

Pin Number

Pin Name

Type

Pin Function

QFN-7×7

-56

QFN-8×8

-68

P1.7/

TXD1/

PINT0.1/

EXTCLKIN/

I/O

Port 1.7 GPIO

8051 P1.7 GPIO

TXD1

This pin also can be configured as TXD of UART 1

PINT0.1

This pin also can be configured as the expanded INT0

interrupt

External Clock Input

External clock input source.

T0 Timer 0 Input

This pin also can be configured as Timer 0 input

TESTEN

Test Mode Enable High Active

This pin has an internal weakly pull low resistor

connected.

If it is connected high, the chip enters into

Test Mode condition

P1.2/SDA

(open-

drain)

I/O

Port 1.2 GPIO

8051 P1.2 GPIO

SDA

This pin also can be configured as the SDA signal of

the I2C master or I2C slave controller. In this operation

mode,

this

should

also

configured

bi-directional I/O with open-drain output

P1.3/SCL

(open-

drain)

I/O

Port 1.3 GPIO

8051 P1.3 GPIO

SCL

This pin also can be configured as the SCL signal of

the I

2C master or I2C slave controller. In I2C master

mode, this pin should be configured as open-drain

output. In I

2C slave, this pin should be configured as

input only

RSTN

Reset Low Active

Typically connect a resistor to VDD18 and a capacitor

to VSS

Low asserted and threshold at 0.5×VDD18. When forced

low, the chip enters into reset condition

This pin should not be connected to any level above

VDD18

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