STMPE1601 Datasheet, PDF (1/58 Pages) STMicroelectronics – 16-bit enhanced port expander with keypad and PWM controller Xpander Logic

STMPE1601
16-bit enhanced port expander with keypad and PWM controller
Xpander Logic
Preliminary Data
Features
■ 16 GPIOs
(8 operate at core supply V_CC , 8 operate at IO
supply V_io)
■ Operating voltage 1.8 −3.3 V
■ Hardware keypad controller (8*8 matrix with 4
optional dedicated keys max)
■ Keypad controller capable of detecting key-
press in hibernation mode
■ 4 basic PWM controller for LED brightness
control
■ Interrupt output (open drain) pin
■ Optional 32 kHz clock input
■ 8-channel programmable level translator
■ Advanced power management system
■ Ultra-low standby-mode current
■ Package TFBGA25 (3 x 3 mm)
TFBGA25
Description
The STMPE1601 is a GPIO (general purpose
input/output) port expander able to interface a
main digital ASIC via the two-line bidirectional bus
(I²C). A separate GPIO expander IC is often used
in mobile multimedia platforms to solve the
problems of the limited number of GPIOs typically
available on the digital engine.
The STMPE1601 offers great flexibility, as each
I/O can be configured as input, output or specific
functions. The device is able to scan a keyboard,
also provides PWM outputs for brightness control
in backlight, and GPIO. This device has been
designed to include very low quiescent current,
and a wake-up feature for each I/O, to optimize
the power consumption of the IC.
Potential applications of the STMPE1601 include
portable media players, game consoles, mobile
and smart phones.
Table 1. Device summary
Order code
STMPE1601TBR
Package
TFBGA25
Packaging
Tape and reel
January 2008
Rev 1
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
1/58
www.st.com
58