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PDF STMPE2401 Data sheet ( Hoja de datos )
| Número de pieza | STMPE2401 | |
| Descripción | 24-bit Enhanced port expander | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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STMPE2401
24-bit Enhanced port expander with Keypad and PWM controller
Xpander logic
Features
■ 24 GPIOs
www.DataSheet4U■.comOperating voltage 1.8V
■ Hardware key pad controller (8*12 matrix max)
■ 3 PWM (8 bit) output for LED brightness control
and blinking
■ Interrupt output (open drain) pin
■ Configurable hotkey feature on each GPIO
■ Ultra-low Standby-mode current
■ Package TFBGA - 36 pins 3.6x3.6mm, pitch
0.5mm
TFBGA
Description
The STMPE2401 is a GPIO (General Purpose
Input / output) port expander able to interface a
Main Digital ASIC via the two-line bidirectional
bus (I2C); separate GPIO Expander IC is often
used in Mobile-Multimedia platforms to solve the
problems of the limited amounts of GPIOs usually
available on the Digital Engine.
The STMPE2401 offers great flexibility as each
I/Os is configurable as input, output or specific
functions; it's able to scan a keyboard, also
provides PWM outputs for brightness control in
backlight, rotator decoder interface and GPIO.
This device has been designed very low
quiescent current, and is including a wake up
feature for each I/O, to optimize the power
consumption of the IC.
Potential application of the STMPE2401 includes
portable media player, game console, mobile
phone, smart phone
Figure 1. Device summary
Part number
STMPE2401TBR
Package
TFBGA36
Packaging
Tape and reel
May 2007
Rev 2
1/55
www.st.com
55
1 page  
STMPE2401
1 Block diagram
Figure 1. Block diagram
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Block diagram
5/55
5 Page 
STMPE2401
4 Electrical specification
Electrical specification
4.1
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DC electrical characteristics
Table 6. DC electrical characteristics
Symbol
Parameter
Test conditions
VCC1,2 1.8V supply voltage
IHIBERNATE HIBERNATE mode
current
ISLEEP SLEEP mode current
Icc Operating current
(FSM working – No
peripheral activity)
IO_INT Open drain output
current
V_INT Voltage level at INT pin
Min.
1.65
Value
Typ.
1.8
6
15
0.5
4
3.6
Max.
1.95
12
Unit
V
uA
50 uA
1.0 mA
mA
V
4.2 I/O DC electrical characteristics
The 1.8V I/O complies to the EIA/JEDEC standard JESD8-7.
Table 7. I/O DC electrical characteristic
Symbol
Parameter
Vil
Vih
Vhyst
Low level input voltage
High level input voltage
Schmitt trigger hysteresis
Min.
0.65*Vcc
= 1.17
Value
Typ.
0.10
Unit
Max.
0.35*Vcc
= 0.63
V
V
V
4.3
DC input specification
(1.55V < VDD < 1.95V)
Table 8. DC input specification
Symbol
Parameter
Vol Low level output voltage
Voh High level output voltage
Test conditions
Min.
Value
Typ.
Iol = 4mA
Ioh = 4mA
Vcc - 0.45
= 1.35
Max.
0.45
Unit
V
V
11/55
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| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet STMPE2401.PDF ] | |
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