www.DataSheet4U.com LM8333 Keypad Controller with.
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Texas Instruments
LM8333 - Mobile I/O Companion Supporting Key-Scan
LM8333 www.ti.com SNLS246K – SEPTEMBER 2006 – REVISED MAY 2013 LM8333 Mobile I/O Companion Supporting Key-Scan, I/O Expansion, PWM, and ACCESS.bus .