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STMPE2401 数据表(PDF) 1 Page - STMicroelectronics |
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STMPE2401 数据表(HTML) 1 Page - STMicroelectronics |
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1 / 55 page ![]() May 2007 Rev 2 1/55 55 STMPE2401 24-bit Enhanced port expander with Keypad and PWM controller Xpander logic Features ■ 24 GPIOs ■ Operating 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 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 TFBGA www.st.com Figure 1. Device summary Part number Package Packaging STMPE2401TBR TFBGA36 Tape and reel |
类似零件编号 - STMPE2401 |
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类似说明 - STMPE2401 |
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