ak4184 AKM Semiconductor, Inc., ak4184 Datasheet
ak4184
Manufacturer Part Number
ak4184
Description
Tsc With Keypad Scanner And Gpio Expander
Manufacturer
AKM Semiconductor, Inc.
Datasheet
1.AK4184.pdf
(36 pages)
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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
1
AK4184
2007/04
[AK4184]
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