ak4184 AKM Semiconductor, Inc., ak4184 Datasheet

Manufacturer Part Number

ak4184

Description

Tsc With Keypad Scanner And Gpio Expander

Manufacturer

AKM Semiconductor, Inc.

Datasheet

1.AK4184.pdf (36 pages)

The AK4184 is a 12-bit A/D converter witch operates 125kHz (max) sampling rate with a 4-wire resistive

touch screen controller (TSC), including low-on resistance switches, touch pressure measurement

capability, a maximum 6 x 5 keypad scanner, eight GPIO ports, and a PWM generator for LED contrast

control. The AK4184 operates down to a 2.5V supply voltage, and it tolerates digital I/O interface voltage

from 1.6V to AVDD in order to connect to low voltage controllers. The AK4184 supports SPI interface for

communication to a host controller. The AK4184 is available in a 41-pin BGA package and it operates over

a temperature range of -40 C to +85 C. The AK4184 is suitable for Cellular Phone, DSC, DVC, Smart

Phone and MP3 player application systems.

MS0603-E-00

SPI Serial Interface

12 bit SAR A/D Converter with S/H Circuit

4-wire Resistive Touch Screen Interface

Sampling Frequency: 125 kHz (max)

Pen Pressure Measurement

6 x 5 Keypad Scanner

8 GPIO Ports

PWM Generator for LED Bias Control

Power Supply:

Low Power Consumption (400 A)

Package:

TSC with Keypad Scanner and GPIO Expander

AVDD = 2.5V

IOVDD = 1.6V

41pin BGA (4mm x 4mm, pitch 0.5mm)

GENERAL DESCRIPTION

3.6V

AVDD (Digital I/F)

FEATURES

AK4184

2007/04

[AK4184]