STMPE1801BJR Datasheet, PDF (1/60 Pages) STMicroelectronics – Xpander Logic 18-bit enhanced port expander with keypad controller

STMPE1801
Xpander Logic™
18-bit enhanced port expander with keypad controller
Features
■ 18 GPIOs configurable as GPI, GPO, keypad
matrix, special key or dedicated key function
■ Operating voltage: 1.65 - 3.6 V
■ Hardware keypad controller (KPC)
(10 x 8 matrix with 4 optional dedicated keys
maximum)
■ Keypad controller capable of detecting
keypress in hibernation mode
■ Interrupt output (open drain) pin
■ Advanced power management system
■ Ultra-low standby mode current
■ Programmable pull-up resistors for all GPIO
pins
■ ESD performance on GPIO pins:
– ± 8 kV human body model
(JESD22 A114-C)
■ ESD performance on V_CC, GND, INT_B, R_STB,
SCL, SDA pins:
– ± 3 kV human body model
(JESD22 A114-C)
Flip-chip CSP 25
(2.03 x 2.03 mm)
Description
The STMPE1801 is a GPIO (general purpose
input/output) port expander capable of interfacing
a main digital ASIC via the two-line bidirectional
bus (I²C). A separate GPIO expander IC is often
used in mobile multimedia platforms to resolve
the problem of the limited number of GPIOs
typically available on digital engines.
The STMPE1801 offers high flexibility, as each
I/O can be configured as input, output, special
key, keypad matrix or dedicated key function. This
device is designed to include very low quiescent
current, and a wakeup feature for each I/O, to
optimize the power consumption of the device.
Potential applications for the STMPE1801 include
portable media players, game consoles, mobile
and smart phones.
Table 1. Device summary
Order code
STMPE1801BJR
Package
Flip-chip CSP 25 (2.03 x 2.03 mm)
0.4 mm pitch
March 2011
Doc ID 17884 Rev 3
Packaging
Tape and reel
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