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LM8333 Datasheet(PDF) 5 Page - Texas Instruments

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Part # LM8333
Description  Mobile I/O Companion Supporting Key-Scan, I/O Expansion, PWM and ACCESS.bus Host Interface
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM8333 Datasheet(HTML) 5 Page - Texas Instruments

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LM8333
www.ti.com
SNLS246K – SEPTEMBER 2006 – REVISED MAY 2013
Typical Application
Figure 3. Typical Keypad Configuration
FEATURES
The following features are supported:
8 x 8 Standard Keys.
8 Special Function Keys (SF keys) with Wake-Up Capability by Forcing a WAKE_INx Pin to Ground. Pressing
a SF Key Overrides any other Key in the Same Row.
A Total of 72 Keys can be Scanned.
ACCESS.Bus (I2C-Compatible) Interface for Communication with the Host.
The Watchdog Timer is Mandatory, so WD_OUT Must be Connected to RESET.
I/O EXPANSION OPTIONS
One Host-Programmable PWM Output which also may be Used as a General-Purpose Output.
Four Host-Programmable General-Purpose I/O Pins, GEN_IO_0, GEN_IO_1, GEN_IO_2, and GEN_IO_3.
GEN_IO_0 and GEN_IO_1 can also be Configured for “Slow” Interrupts, in which any Transition will Trigger a
Hardware Interrupt Event to the Host.
Copyright © 2006–2013, Texas Instruments Incorporated
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